Endocrinology

SEATTLE – Palopegteriparatide (TransCon PTH, Ascendis Pharma) is a potential long-term therapy for adults with hypoparathyroidism, new findings suggest.

Findings from 110-week phase 2 data for the once-daily investigational parathyroid hormone (PTH) replacement drug were recently presented at the annual scientific & clinical congress of the American Association of Clinical Endocrinology.

Overall, the drug was associated with independence from conventional calcium and active vitamin D therapy in most patients at 110 weeks, with no discontinuations due to adverse effects.  

“Patients with hypoparathyroidism have low serum calcium levels and struggle with quality of life and biochemical abnormalities. The data from the TransCon PTH studies seem to show that a lot of these abnormalities can be reversed,” presenter Mishaela R. Rubin, MD, said in an interview.  

Other PTH replacement therapies such as Nupara (now discontinued) and teriparatide (off-label) have been used in some patients with hypoparathyroidism.

However, “[TransCon PTH] is delivered in such a way as to have a prolonged half-life, so that’s kind of a special benefit that it has,” added Dr. Rubin of the division of endocrinology and metabolic bone disease, department of medicine, Columbia University, New York.

Asked to comment, session moderator Thanh Hoang, DO, of Walter Reed National Military Medical Center, Silver Spring, Md., said: “I think it’s a very promising medication because right now we don’t have a lot of options ... I think it would help a lot of patients.”
 

Approval denied, company addressing concerns

On May 1, the Food and Drug Administration issued a complete response letter, signaling denial of approval for the TransCon PTH, citing concerns related to manufacturing control of the product’s drug/device combination product, but not about the product’s safety and efficacy, according to an Ascendis statement.

The company is now working with the FDA to address these issues and is awaiting a European Union decision later this year.

The FDA did not request that the company conduct further clinical trials of TransCon PTH, which now include published 26-week phase 2 and phase 3 data along with the current longer-term phase 2 data presented at AACE.

“The company has said that they’re hopeful the issues will be addressable and that the FDA did not have any concerns about safety,” Dr. Rubin said in an interview.
 

Calcium normalized, bone turnover improved

Dr. Rubin presented long-term efficacy and safety data from the Phase 2 PaTH Forward trial, which involved 57 of the initial 59 participants who completed week 110 of an open-label extension of the trial.

During the first 4 weeks, patients had been randomized to TransCon PTH at fixed doses of 15 µg/day, 18 µg/day, 21 µg/day, or placebo. After week 4, all patients switched to TransCon PTH titrated to doses of 6-60 µg/day along with conventional therapy, with the goal of maintaining normocalcemia.

Participants were a mean age of 50 years, 81% were women, and 92% were White. Causes of hypoparathyroidism were neck surgery in 80%, autoimmune disease in 2%, and idiopathic disease in 19%. Disease duration was 12 years (range 1-39), and all were taking conventional therapy including calcium and active vitamin D (calcitriol or alfacaldiol).

At 110 weeks, all 57 patients were able to stop taking active vitamin D, and 53 of the 57 (93%) patients achieved independence from conventional therapy, defined as taking 0 µg/day of active vitamin D and no more than 600 mg/day of calcium (the dietary supplement dose). A total of 44 (77%) patients were not taking any calcium or active vitamin D.

“This really establishes the durability up to 2 years of keeping people off conventional therapy,” Dr. Rubin said during her presentation.

There was an initial uptick to 9.4 mg/dL in mean serum calcium, as some participants were still taking active vitamin D, but that dropped to 8.9 mg/dL by week 26. Mean 24-hour urine calcium dropped from 428 mg/day at baseline to 173 mg/day by week 26. Both serum calcium and urine calcium remained in the normal range through week 110 in all patients, at 8.6 mg/dL and 167 mg/day, respectively.

“This is a really important outcome because we know that high urine calcium in these patients sets them at risk for going on to develop nephrocalcinosis, nephrolithiasis, and ultimately, chronic kidney disease,” Dr. Rubin said.

Serum levels of two bone formation markers peaked at 12 weeks after initiation of TransCon PTH. Both trended downward thereafter through week 110 to levels approximating those of age- and sex-matched controls.  

“Both markers started off low, consistent with hypoparathyroidism, but with initiation of TransCon PTH we see a robust increase in bone turnover markers, almost as if the bone is ‘waking up,’ if you will. And this is consistent with calcium being mobilized from the skeleton and going into the circulation,” Dr. Rubin explained.

Bone mineral density assessed by dual-energy x-ray absorptiometry normalized, primarily in the first 26 weeks. For lumbar spine L1-L4, mean Z-scores dropped from 1.6 to 1.0 at 26 weeks and down to 0.7 by week 100. For total hip, those values were 1.0, 0.6, and 0.4, respectively. The values approached age- and sex-matched norms, Dr. Rubin noted, to “perhaps where their skeleton would be if they hadn’t had hypoparathyroidism.”

Overall 56 of the 57 (94.9%) patients reported treatment-emergent adverse events, of which 25 (42.4%) were treatment related and none were deemed serious. There were no treatment-emergent adverse events related to hypercalcemia or hypocalcemia leading to health care visits or hospitalization, none leading to discontinuation of study drug, and none to death.

“So overall, a reassuring safety profile,” Dr. Rubin said. “We look forward to presenting the next 2 years’ worth of data to the end of the open-label extension study.”

Dr. Rubin is a paid researcher for Ascendis, which funded the study. Dr. Hoang has reported no relevant financial relationships.
 

A version of this article originally appeared on Medscape.com.

SEATTLE – Palopegteriparatide (TransCon PTH, Ascendis Pharma) is a potential long-term therapy for adults with hypoparathyroidism, new findings suggest.

Findings from 110-week phase 2 data for the once-daily investigational parathyroid hormone (PTH) replacement drug were recently presented at the annual scientific & clinical congress of the American Association of Clinical Endocrinology.

Overall, the drug was associated with independence from conventional calcium and active vitamin D therapy in most patients at 110 weeks, with no discontinuations due to adverse effects.  

“Patients with hypoparathyroidism have low serum calcium levels and struggle with quality of life and biochemical abnormalities. The data from the TransCon PTH studies seem to show that a lot of these abnormalities can be reversed,” presenter Mishaela R. Rubin, MD, said in an interview.  

Other PTH replacement therapies such as Nupara (now discontinued) and teriparatide (off-label) have been used in some patients with hypoparathyroidism.

However, “[TransCon PTH] is delivered in such a way as to have a prolonged half-life, so that’s kind of a special benefit that it has,” added Dr. Rubin of the division of endocrinology and metabolic bone disease, department of medicine, Columbia University, New York.

Asked to comment, session moderator Thanh Hoang, DO, of Walter Reed National Military Medical Center, Silver Spring, Md., said: “I think it’s a very promising medication because right now we don’t have a lot of options ... I think it would help a lot of patients.”
 

Approval denied, company addressing concerns

On May 1, the Food and Drug Administration issued a complete response letter, signaling denial of approval for the TransCon PTH, citing concerns related to manufacturing control of the product’s drug/device combination product, but not about the product’s safety and efficacy, according to an Ascendis statement.

The company is now working with the FDA to address these issues and is awaiting a European Union decision later this year.

The FDA did not request that the company conduct further clinical trials of TransCon PTH, which now include published 26-week phase 2 and phase 3 data along with the current longer-term phase 2 data presented at AACE.

“The company has said that they’re hopeful the issues will be addressable and that the FDA did not have any concerns about safety,” Dr. Rubin said in an interview.
 

Calcium normalized, bone turnover improved

Dr. Rubin presented long-term efficacy and safety data from the Phase 2 PaTH Forward trial, which involved 57 of the initial 59 participants who completed week 110 of an open-label extension of the trial.

During the first 4 weeks, patients had been randomized to TransCon PTH at fixed doses of 15 µg/day, 18 µg/day, 21 µg/day, or placebo. After week 4, all patients switched to TransCon PTH titrated to doses of 6-60 µg/day along with conventional therapy, with the goal of maintaining normocalcemia.

Participants were a mean age of 50 years, 81% were women, and 92% were White. Causes of hypoparathyroidism were neck surgery in 80%, autoimmune disease in 2%, and idiopathic disease in 19%. Disease duration was 12 years (range 1-39), and all were taking conventional therapy including calcium and active vitamin D (calcitriol or alfacaldiol).

At 110 weeks, all 57 patients were able to stop taking active vitamin D, and 53 of the 57 (93%) patients achieved independence from conventional therapy, defined as taking 0 µg/day of active vitamin D and no more than 600 mg/day of calcium (the dietary supplement dose). A total of 44 (77%) patients were not taking any calcium or active vitamin D.

“This really establishes the durability up to 2 years of keeping people off conventional therapy,” Dr. Rubin said during her presentation.

There was an initial uptick to 9.4 mg/dL in mean serum calcium, as some participants were still taking active vitamin D, but that dropped to 8.9 mg/dL by week 26. Mean 24-hour urine calcium dropped from 428 mg/day at baseline to 173 mg/day by week 26. Both serum calcium and urine calcium remained in the normal range through week 110 in all patients, at 8.6 mg/dL and 167 mg/day, respectively.

“This is a really important outcome because we know that high urine calcium in these patients sets them at risk for going on to develop nephrocalcinosis, nephrolithiasis, and ultimately, chronic kidney disease,” Dr. Rubin said.

Serum levels of two bone formation markers peaked at 12 weeks after initiation of TransCon PTH. Both trended downward thereafter through week 110 to levels approximating those of age- and sex-matched controls.  

“Both markers started off low, consistent with hypoparathyroidism, but with initiation of TransCon PTH we see a robust increase in bone turnover markers, almost as if the bone is ‘waking up,’ if you will. And this is consistent with calcium being mobilized from the skeleton and going into the circulation,” Dr. Rubin explained.

Bone mineral density assessed by dual-energy x-ray absorptiometry normalized, primarily in the first 26 weeks. For lumbar spine L1-L4, mean Z-scores dropped from 1.6 to 1.0 at 26 weeks and down to 0.7 by week 100. For total hip, those values were 1.0, 0.6, and 0.4, respectively. The values approached age- and sex-matched norms, Dr. Rubin noted, to “perhaps where their skeleton would be if they hadn’t had hypoparathyroidism.”

Overall 56 of the 57 (94.9%) patients reported treatment-emergent adverse events, of which 25 (42.4%) were treatment related and none were deemed serious. There were no treatment-emergent adverse events related to hypercalcemia or hypocalcemia leading to health care visits or hospitalization, none leading to discontinuation of study drug, and none to death.

“So overall, a reassuring safety profile,” Dr. Rubin said. “We look forward to presenting the next 2 years’ worth of data to the end of the open-label extension study.”

Dr. Rubin is a paid researcher for Ascendis, which funded the study. Dr. Hoang has reported no relevant financial relationships.
 

A version of this article originally appeared on Medscape.com.

SEATTLE – Palopegteriparatide (TransCon PTH, Ascendis Pharma) is a potential long-term therapy for adults with hypoparathyroidism, new findings suggest.

Findings from 110-week phase 2 data for the once-daily investigational parathyroid hormone (PTH) replacement drug were recently presented at the annual scientific & clinical congress of the American Association of Clinical Endocrinology.

Overall, the drug was associated with independence from conventional calcium and active vitamin D therapy in most patients at 110 weeks, with no discontinuations due to adverse effects.  

“Patients with hypoparathyroidism have low serum calcium levels and struggle with quality of life and biochemical abnormalities. The data from the TransCon PTH studies seem to show that a lot of these abnormalities can be reversed,” presenter Mishaela R. Rubin, MD, said in an interview.  

Other PTH replacement therapies such as Nupara (now discontinued) and teriparatide (off-label) have been used in some patients with hypoparathyroidism.

However, “[TransCon PTH] is delivered in such a way as to have a prolonged half-life, so that’s kind of a special benefit that it has,” added Dr. Rubin of the division of endocrinology and metabolic bone disease, department of medicine, Columbia University, New York.

Asked to comment, session moderator Thanh Hoang, DO, of Walter Reed National Military Medical Center, Silver Spring, Md., said: “I think it’s a very promising medication because right now we don’t have a lot of options ... I think it would help a lot of patients.”
 

Approval denied, company addressing concerns

On May 1, the Food and Drug Administration issued a complete response letter, signaling denial of approval for the TransCon PTH, citing concerns related to manufacturing control of the product’s drug/device combination product, but not about the product’s safety and efficacy, according to an Ascendis statement.

The company is now working with the FDA to address these issues and is awaiting a European Union decision later this year.

The FDA did not request that the company conduct further clinical trials of TransCon PTH, which now include published 26-week phase 2 and phase 3 data along with the current longer-term phase 2 data presented at AACE.

“The company has said that they’re hopeful the issues will be addressable and that the FDA did not have any concerns about safety,” Dr. Rubin said in an interview.
 

Calcium normalized, bone turnover improved

Dr. Rubin presented long-term efficacy and safety data from the Phase 2 PaTH Forward trial, which involved 57 of the initial 59 participants who completed week 110 of an open-label extension of the trial.

During the first 4 weeks, patients had been randomized to TransCon PTH at fixed doses of 15 µg/day, 18 µg/day, 21 µg/day, or placebo. After week 4, all patients switched to TransCon PTH titrated to doses of 6-60 µg/day along with conventional therapy, with the goal of maintaining normocalcemia.

Participants were a mean age of 50 years, 81% were women, and 92% were White. Causes of hypoparathyroidism were neck surgery in 80%, autoimmune disease in 2%, and idiopathic disease in 19%. Disease duration was 12 years (range 1-39), and all were taking conventional therapy including calcium and active vitamin D (calcitriol or alfacaldiol).

At 110 weeks, all 57 patients were able to stop taking active vitamin D, and 53 of the 57 (93%) patients achieved independence from conventional therapy, defined as taking 0 µg/day of active vitamin D and no more than 600 mg/day of calcium (the dietary supplement dose). A total of 44 (77%) patients were not taking any calcium or active vitamin D.

“This really establishes the durability up to 2 years of keeping people off conventional therapy,” Dr. Rubin said during her presentation.

There was an initial uptick to 9.4 mg/dL in mean serum calcium, as some participants were still taking active vitamin D, but that dropped to 8.9 mg/dL by week 26. Mean 24-hour urine calcium dropped from 428 mg/day at baseline to 173 mg/day by week 26. Both serum calcium and urine calcium remained in the normal range through week 110 in all patients, at 8.6 mg/dL and 167 mg/day, respectively.

“This is a really important outcome because we know that high urine calcium in these patients sets them at risk for going on to develop nephrocalcinosis, nephrolithiasis, and ultimately, chronic kidney disease,” Dr. Rubin said.

Serum levels of two bone formation markers peaked at 12 weeks after initiation of TransCon PTH. Both trended downward thereafter through week 110 to levels approximating those of age- and sex-matched controls.  

“Both markers started off low, consistent with hypoparathyroidism, but with initiation of TransCon PTH we see a robust increase in bone turnover markers, almost as if the bone is ‘waking up,’ if you will. And this is consistent with calcium being mobilized from the skeleton and going into the circulation,” Dr. Rubin explained.

Bone mineral density assessed by dual-energy x-ray absorptiometry normalized, primarily in the first 26 weeks. For lumbar spine L1-L4, mean Z-scores dropped from 1.6 to 1.0 at 26 weeks and down to 0.7 by week 100. For total hip, those values were 1.0, 0.6, and 0.4, respectively. The values approached age- and sex-matched norms, Dr. Rubin noted, to “perhaps where their skeleton would be if they hadn’t had hypoparathyroidism.”

Overall 56 of the 57 (94.9%) patients reported treatment-emergent adverse events, of which 25 (42.4%) were treatment related and none were deemed serious. There were no treatment-emergent adverse events related to hypercalcemia or hypocalcemia leading to health care visits or hospitalization, none leading to discontinuation of study drug, and none to death.

“So overall, a reassuring safety profile,” Dr. Rubin said. “We look forward to presenting the next 2 years’ worth of data to the end of the open-label extension study.”

Dr. Rubin is a paid researcher for Ascendis, which funded the study. Dr. Hoang has reported no relevant financial relationships.
 

A version of this article originally appeared on Medscape.com.

Patients with long COVID-19 – where the effects of an initial COVID infection last more than 12 weeks – had lower levels of 25(OH) vitamin D than other patients who survived COVID-19, in a retrospective, case-matched study.

The lower levels of vitamin D in patients with long COVID were most notable in those with brain fog.

Reasonable to test vitamin D levels, consider supplementation

Invited to comment, Amiel Dror, MD, PhD, who led a related study that showed that people with a vitamin D deficiency were more likely to have severe COVID-19, agreed.

“The novelty and significance of this [new] study lie in the fact that it expands on our current understanding of the interplay between vitamin D and COVID-19, taking it beyond the acute phase of the disease,” said Dr. Dror, from Bar-Ilan University, Safed, Israel.

“It’s striking to see how vitamin D levels continue to influence patients’ health even after recovery from the initial infection,” he noted. 

“The findings certainly add weight to the argument for conducting a randomized control trial [RCT],” he continued, which “would enable us to conclusively determine whether vitamin D supplementation can effectively reduce the risk or severity of long COVID.”

“In the interim,” Dr. Dror said, “given the safety profile of vitamin D and its broad health benefits, it could be reasonable to test for vitamin D levels in patients admitted with COVID-19. If levels are found to be low, supplementation could be considered.”

“However, it’s important to note that this should be done under medical supervision,” he cautioned, “and further studies are needed to establish the optimal timing and dosage of supplementation.”

“I anticipate that we’ll see more RCTs [of this] in the future,” he speculated.
 

Low vitamin D and risk of long COVID

Long COVID is an emerging syndrome that affects 50%-70% of COVID-19 survivors.

Low levels of vitamin D have been associated with increased likelihood of needing mechanical ventilation and worse survival in patients hospitalized with COVID-19, but the risk of long COVID associated with vitamin D has not been known.

Researchers analyzed data from adults aged 18 and older hospitalized at San Raffaele Hospital with a confirmed diagnosis of COVID-19 and discharged during the first pandemic wave, from March to May 2020, and then seen 6-months later for follow-up.

Patients were excluded if they had been admitted to the intensive care unit during hospitalization or had missing medical data or blood samples available to determine (OH) vitamin D levels, at admission and the 6-month follow-up.

Long COVID-19 was defined based on the U.K. National Institute for Health and Care Excellence guidelines as the concomitant presence of at least two or more of 17 signs and symptoms that were absent prior to the COVID-19 infection and could only be attributed to that acute disease.

Researchers identified 50 patients with long COVID at the 6-month follow-up and matched them with 50 patients without long COVID at that time point, based on age, sex, concomitant comorbidities, need for noninvasive mechanical ventilation, and week of evaluation.

Patients were a mean age of 61 years (range, 51-73) and 56% were men; 28% had been on a ventilator during hospitalization for COVID-19.

The most frequent signs and symptoms at 6 months in the patients with long COVID were asthenia (weakness, 38% of patients), dysgeusia (bad taste in the mouth, 34%), dyspnea (shortness of breath, 34%), and anosmia (loss of sense of smell, 24%).

Most symptoms were related to the cardiorespiratory system (42%), the feeling of well-being (42%), or the senses (36%), and fewer patients had symptoms related to neurocognitive impairment (headache or brain fog, 14%), or ear, nose, and throat (12%), or gastrointestinal system (4%).

Patients with long COVID had lower mean 25(OH) vitamin D levels than patients without long COVID (20.1 vs 23.2 ng/mL; P = .03). However, actual vitamin D deficiency levels were similar in both groups.

Two-thirds of patients with low vitamin D levels at hospital admission still presented with low levels at the 6-month follow-up.

Vitamin D levels were significantly lower in patients with neurocognitive symptoms at follow-up (n = 7) than in those without such symptoms (n = 93) (14.6 vs. 20.6 ng/mL; P = .042).

In patients with vitamin D deficiency (< 20 ng/mL) at admission and at follow-up (n = 42), those with long COVID (n = 22) had lower vitamin D levels at follow-up than those without long COVID (n = 20) (12.7 vs. 15.2 ng/mL; P = .041).

And in multiple regression analyses, a lower 25(OH) vitamin D level at follow-up was the only variable that was significantly associated with long COVID (odds ratio, 1.09; 95% confidence interval, 1.01-1.16; P = .008).

The findings “strongly reinforce the clinical usefulness of 25(OH) vitamin D evaluation as a possible modifiable pathophysiological factor underlying this emerging worldwide critical health issue,” the researchers concluded.

The study was supported by Abiogen Pharma. One study author is an employee at Abiogen. Dr. Giustina has reported being a consultant for Abiogen and Takeda and receiving a research grant to his institution from Takeda. Dr. Di Filippo and the other authors reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Patients with long COVID-19 – where the effects of an initial COVID infection last more than 12 weeks – had lower levels of 25(OH) vitamin D than other patients who survived COVID-19, in a retrospective, case-matched study.

The lower levels of vitamin D in patients with long COVID were most notable in those with brain fog.

Reasonable to test vitamin D levels, consider supplementation

Invited to comment, Amiel Dror, MD, PhD, who led a related study that showed that people with a vitamin D deficiency were more likely to have severe COVID-19, agreed.

“The novelty and significance of this [new] study lie in the fact that it expands on our current understanding of the interplay between vitamin D and COVID-19, taking it beyond the acute phase of the disease,” said Dr. Dror, from Bar-Ilan University, Safed, Israel.

“It’s striking to see how vitamin D levels continue to influence patients’ health even after recovery from the initial infection,” he noted. 

“The findings certainly add weight to the argument for conducting a randomized control trial [RCT],” he continued, which “would enable us to conclusively determine whether vitamin D supplementation can effectively reduce the risk or severity of long COVID.”

“In the interim,” Dr. Dror said, “given the safety profile of vitamin D and its broad health benefits, it could be reasonable to test for vitamin D levels in patients admitted with COVID-19. If levels are found to be low, supplementation could be considered.”

“However, it’s important to note that this should be done under medical supervision,” he cautioned, “and further studies are needed to establish the optimal timing and dosage of supplementation.”

“I anticipate that we’ll see more RCTs [of this] in the future,” he speculated.
 

Low vitamin D and risk of long COVID

Long COVID is an emerging syndrome that affects 50%-70% of COVID-19 survivors.

Low levels of vitamin D have been associated with increased likelihood of needing mechanical ventilation and worse survival in patients hospitalized with COVID-19, but the risk of long COVID associated with vitamin D has not been known.

Researchers analyzed data from adults aged 18 and older hospitalized at San Raffaele Hospital with a confirmed diagnosis of COVID-19 and discharged during the first pandemic wave, from March to May 2020, and then seen 6-months later for follow-up.

Patients were excluded if they had been admitted to the intensive care unit during hospitalization or had missing medical data or blood samples available to determine (OH) vitamin D levels, at admission and the 6-month follow-up.

Long COVID-19 was defined based on the U.K. National Institute for Health and Care Excellence guidelines as the concomitant presence of at least two or more of 17 signs and symptoms that were absent prior to the COVID-19 infection and could only be attributed to that acute disease.

Researchers identified 50 patients with long COVID at the 6-month follow-up and matched them with 50 patients without long COVID at that time point, based on age, sex, concomitant comorbidities, need for noninvasive mechanical ventilation, and week of evaluation.

Patients were a mean age of 61 years (range, 51-73) and 56% were men; 28% had been on a ventilator during hospitalization for COVID-19.

The most frequent signs and symptoms at 6 months in the patients with long COVID were asthenia (weakness, 38% of patients), dysgeusia (bad taste in the mouth, 34%), dyspnea (shortness of breath, 34%), and anosmia (loss of sense of smell, 24%).

Most symptoms were related to the cardiorespiratory system (42%), the feeling of well-being (42%), or the senses (36%), and fewer patients had symptoms related to neurocognitive impairment (headache or brain fog, 14%), or ear, nose, and throat (12%), or gastrointestinal system (4%).

Patients with long COVID had lower mean 25(OH) vitamin D levels than patients without long COVID (20.1 vs 23.2 ng/mL; P = .03). However, actual vitamin D deficiency levels were similar in both groups.

Two-thirds of patients with low vitamin D levels at hospital admission still presented with low levels at the 6-month follow-up.

Vitamin D levels were significantly lower in patients with neurocognitive symptoms at follow-up (n = 7) than in those without such symptoms (n = 93) (14.6 vs. 20.6 ng/mL; P = .042).

In patients with vitamin D deficiency (< 20 ng/mL) at admission and at follow-up (n = 42), those with long COVID (n = 22) had lower vitamin D levels at follow-up than those without long COVID (n = 20) (12.7 vs. 15.2 ng/mL; P = .041).

And in multiple regression analyses, a lower 25(OH) vitamin D level at follow-up was the only variable that was significantly associated with long COVID (odds ratio, 1.09; 95% confidence interval, 1.01-1.16; P = .008).

The findings “strongly reinforce the clinical usefulness of 25(OH) vitamin D evaluation as a possible modifiable pathophysiological factor underlying this emerging worldwide critical health issue,” the researchers concluded.

The study was supported by Abiogen Pharma. One study author is an employee at Abiogen. Dr. Giustina has reported being a consultant for Abiogen and Takeda and receiving a research grant to his institution from Takeda. Dr. Di Filippo and the other authors reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Patients with long COVID-19 – where the effects of an initial COVID infection last more than 12 weeks – had lower levels of 25(OH) vitamin D than other patients who survived COVID-19, in a retrospective, case-matched study.

The lower levels of vitamin D in patients with long COVID were most notable in those with brain fog.

Reasonable to test vitamin D levels, consider supplementation

Invited to comment, Amiel Dror, MD, PhD, who led a related study that showed that people with a vitamin D deficiency were more likely to have severe COVID-19, agreed.

“The novelty and significance of this [new] study lie in the fact that it expands on our current understanding of the interplay between vitamin D and COVID-19, taking it beyond the acute phase of the disease,” said Dr. Dror, from Bar-Ilan University, Safed, Israel.

“It’s striking to see how vitamin D levels continue to influence patients’ health even after recovery from the initial infection,” he noted. 

“The findings certainly add weight to the argument for conducting a randomized control trial [RCT],” he continued, which “would enable us to conclusively determine whether vitamin D supplementation can effectively reduce the risk or severity of long COVID.”

“In the interim,” Dr. Dror said, “given the safety profile of vitamin D and its broad health benefits, it could be reasonable to test for vitamin D levels in patients admitted with COVID-19. If levels are found to be low, supplementation could be considered.”

“However, it’s important to note that this should be done under medical supervision,” he cautioned, “and further studies are needed to establish the optimal timing and dosage of supplementation.”

“I anticipate that we’ll see more RCTs [of this] in the future,” he speculated.
 

Low vitamin D and risk of long COVID

Long COVID is an emerging syndrome that affects 50%-70% of COVID-19 survivors.

Low levels of vitamin D have been associated with increased likelihood of needing mechanical ventilation and worse survival in patients hospitalized with COVID-19, but the risk of long COVID associated with vitamin D has not been known.

Researchers analyzed data from adults aged 18 and older hospitalized at San Raffaele Hospital with a confirmed diagnosis of COVID-19 and discharged during the first pandemic wave, from March to May 2020, and then seen 6-months later for follow-up.

Patients were excluded if they had been admitted to the intensive care unit during hospitalization or had missing medical data or blood samples available to determine (OH) vitamin D levels, at admission and the 6-month follow-up.

Long COVID-19 was defined based on the U.K. National Institute for Health and Care Excellence guidelines as the concomitant presence of at least two or more of 17 signs and symptoms that were absent prior to the COVID-19 infection and could only be attributed to that acute disease.

Researchers identified 50 patients with long COVID at the 6-month follow-up and matched them with 50 patients without long COVID at that time point, based on age, sex, concomitant comorbidities, need for noninvasive mechanical ventilation, and week of evaluation.

Patients were a mean age of 61 years (range, 51-73) and 56% were men; 28% had been on a ventilator during hospitalization for COVID-19.

The most frequent signs and symptoms at 6 months in the patients with long COVID were asthenia (weakness, 38% of patients), dysgeusia (bad taste in the mouth, 34%), dyspnea (shortness of breath, 34%), and anosmia (loss of sense of smell, 24%).

Most symptoms were related to the cardiorespiratory system (42%), the feeling of well-being (42%), or the senses (36%), and fewer patients had symptoms related to neurocognitive impairment (headache or brain fog, 14%), or ear, nose, and throat (12%), or gastrointestinal system (4%).

Patients with long COVID had lower mean 25(OH) vitamin D levels than patients without long COVID (20.1 vs 23.2 ng/mL; P = .03). However, actual vitamin D deficiency levels were similar in both groups.

Two-thirds of patients with low vitamin D levels at hospital admission still presented with low levels at the 6-month follow-up.

Vitamin D levels were significantly lower in patients with neurocognitive symptoms at follow-up (n = 7) than in those without such symptoms (n = 93) (14.6 vs. 20.6 ng/mL; P = .042).

In patients with vitamin D deficiency (< 20 ng/mL) at admission and at follow-up (n = 42), those with long COVID (n = 22) had lower vitamin D levels at follow-up than those without long COVID (n = 20) (12.7 vs. 15.2 ng/mL; P = .041).

And in multiple regression analyses, a lower 25(OH) vitamin D level at follow-up was the only variable that was significantly associated with long COVID (odds ratio, 1.09; 95% confidence interval, 1.01-1.16; P = .008).

The findings “strongly reinforce the clinical usefulness of 25(OH) vitamin D evaluation as a possible modifiable pathophysiological factor underlying this emerging worldwide critical health issue,” the researchers concluded.

The study was supported by Abiogen Pharma. One study author is an employee at Abiogen. Dr. Giustina has reported being a consultant for Abiogen and Takeda and receiving a research grant to his institution from Takeda. Dr. Di Filippo and the other authors reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

In one of the first studies to examine this phenomenon, metabolically unhealthy obesity is associated with an increased risk, around 1.5-fold higher, of any obesity-related cancer, and an even higher risk, two- to threefold higher, for specific cancers, such as endometrial, liver, and renal cell cancers, compared with metabolically healthy normal weight.

Even in people with so-called “metabolically healthy” obesity, the risk for overall obesity-related cancer is increased, compared with normal-weight, metabolically healthy individuals; however, the associations here are weaker than in people with metabolically unhealthy obesity.

“The type of metabolic obesity phenotype is important when assessing obesity-related cancer risk,” lead researcher Ming Sun, PhD, from Lund University, Malmö, Sweden, said in an interview. “In general, metabolic aberrations further increased the obesity-induced cancer risk, suggesting that obesity and metabolic aberrations are useful targets for prevention.”

“This synergy means that when obesity and metabolic unhealth occur together, that’s particularly bad,” added Tanja Stocks, PhD, senior author, also of Lund University.

“But the data also highlight that even obesity and overweight alone comprise an increased risk of cancer,” Dr. Stocks noted.

Dr. Sun said the findings have important public health implications, suggesting that “a significant number of cancer cases could potentially be prevented by targeting the coexistence of metabolic problems and obesity, in particular for obesity-related cancers among men.”

The results will be presented as a poster by Dr. Sun at the European Congress on Obesity 2023, being held in Dublin, and have been published in the Journal of the National Cancer Institute.
 

Metabolically unhealthy obesity worst for cancer risks

Andrew G. Renehan, PhD, FRCS, professor of cancer studies and surgery, University of Manchester, England, welcomed the new work, saying it addresses the issue with very large study numbers. “[It] nicely demonstrates that there are clear examples where metabolically unhealthy overweight and obese phenotypes have increased cancer risk relative to [metabolically] healthy overweight and obese phenotypes,” he said.

“There is a clear need for clinically based research addressing these hypotheses ... but these studies will additionally need to factor in other dimensions such as the selection of treatment for metabolic aberrations, both medical and surgical, and the consequent metabolic control resulting from these interventions,” Dr. Renehan observed.

Vibhu Chittajallu, MD, a gastroenterologist based at University Hospitals Cleveland Medical Center, said it was beneficial to see another study further validating the association of obesity with the development of obesity-associated cancers.

“This is an interesting study [because it focuses] on the role of metabolic syndrome in obesity and how it affects the risk of development of obesity-associated cancers,” he said in an interview.

“I believe that the results of this study further strengthen the need for improved management of obesity and metabolic syndrome to reduce the risk of obesity-associated cancer formation that plays a role in preventable and premature deaths in adult patients with obesity.”
 

Synergy between metabolic aberrations and obesity, and cancer risk

Dr. Sun and colleagues note that obesity is an established risk factor for several cancers. It is often accompanied by metabolic aberrations, which have been a commonly proposed mechanism to link obesity with cancer. During the last decade, obesity with or without metabolic aberrations – commonly termed “metabolically unhealthy” or “healthy obesity” – has been extensively investigated in the cardiovascular field; however, studies regarding cancer are limited.

According to Dr. Sun, this new study is the first to look at the synergistic effect of unhealthy metabolism and body mass index – the latter was further categorized as normal weight (BMI < 25 kg/m2), overweight (BMI < 30) and obesity (BMI ≤ 30) – and the association with cancer risk, both overall and in relation to site-specific cancers.

Data were drawn from 797,193 European individuals (in Norway, Sweden, and Austria), of whom 23,630 developed an obesity-related cancer during the follow-up period. A metabolic score comprising mid-blood pressure, plasma glucose, and triglycerides was used to provide a measure of healthy or unhealthy metabolic status. Relative risks (hazard ratios) for overall and site-specific cancers were determined. Comparisons were made with metabolically healthy people of normal weight (effectively controls).

When different metabolic scores and BMIs were combined, participants fell into six categories: metabolically unhealthy obesity (6.8% of participants); metabolically healthy obesity (3.4%), metabolically unhealthy overweight (15.4%), metabolically healthy overweight (19.8%), metabolically unhealthy normal weight (12.5%), and metabolically healthy normal weight (42.0%).

Metabolically unhealthy women with obesity had a hazard ratio of 1.43 for overall obesity-related cancers, compared with metabolically healthy women of normal weight. Of particular note were risks of two cancer types in women with metabolically unhealthy obesity: renal cancer, with an HR of 2.43, and endometrial cancer, with an HR of 3.0, compared with controls.

Even in metabolically healthy women with obesity, compared with metabolically healthy women of normal weight, there was an increased risk of endometrial cancer, with an HR of 2.36.

“If you look at individual cancers, in particular endometrial cancer, this seems to be very much driven by obesity and not so much by the metabolic factor,” remarked Dr. Stocks.

In males, compared with metabolically healthy men of normal weight, metabolically unhealthy men with obesity had an overall obesity-related cancer risk HR of 1.91. Specifically, the risk of renal cell cancer was more than doubled, with an HR of 2.59. The HR for colon cancer was 1.85, and that for rectal cancer and pancreatic cancer was similar, both having HRs of 1.32.

Again, risk was lower in metabolically healthy men with obesity, although still higher than for metabolically healthy normal-weight men.

A version of this article first appeared on Medscape.com.

In one of the first studies to examine this phenomenon, metabolically unhealthy obesity is associated with an increased risk, around 1.5-fold higher, of any obesity-related cancer, and an even higher risk, two- to threefold higher, for specific cancers, such as endometrial, liver, and renal cell cancers, compared with metabolically healthy normal weight.

Even in people with so-called “metabolically healthy” obesity, the risk for overall obesity-related cancer is increased, compared with normal-weight, metabolically healthy individuals; however, the associations here are weaker than in people with metabolically unhealthy obesity.

“The type of metabolic obesity phenotype is important when assessing obesity-related cancer risk,” lead researcher Ming Sun, PhD, from Lund University, Malmö, Sweden, said in an interview. “In general, metabolic aberrations further increased the obesity-induced cancer risk, suggesting that obesity and metabolic aberrations are useful targets for prevention.”

“This synergy means that when obesity and metabolic unhealth occur together, that’s particularly bad,” added Tanja Stocks, PhD, senior author, also of Lund University.

“But the data also highlight that even obesity and overweight alone comprise an increased risk of cancer,” Dr. Stocks noted.

Dr. Sun said the findings have important public health implications, suggesting that “a significant number of cancer cases could potentially be prevented by targeting the coexistence of metabolic problems and obesity, in particular for obesity-related cancers among men.”

The results will be presented as a poster by Dr. Sun at the European Congress on Obesity 2023, being held in Dublin, and have been published in the Journal of the National Cancer Institute.
 

Metabolically unhealthy obesity worst for cancer risks

Andrew G. Renehan, PhD, FRCS, professor of cancer studies and surgery, University of Manchester, England, welcomed the new work, saying it addresses the issue with very large study numbers. “[It] nicely demonstrates that there are clear examples where metabolically unhealthy overweight and obese phenotypes have increased cancer risk relative to [metabolically] healthy overweight and obese phenotypes,” he said.

“There is a clear need for clinically based research addressing these hypotheses ... but these studies will additionally need to factor in other dimensions such as the selection of treatment for metabolic aberrations, both medical and surgical, and the consequent metabolic control resulting from these interventions,” Dr. Renehan observed.

Vibhu Chittajallu, MD, a gastroenterologist based at University Hospitals Cleveland Medical Center, said it was beneficial to see another study further validating the association of obesity with the development of obesity-associated cancers.

“This is an interesting study [because it focuses] on the role of metabolic syndrome in obesity and how it affects the risk of development of obesity-associated cancers,” he said in an interview.

“I believe that the results of this study further strengthen the need for improved management of obesity and metabolic syndrome to reduce the risk of obesity-associated cancer formation that plays a role in preventable and premature deaths in adult patients with obesity.”
 

Synergy between metabolic aberrations and obesity, and cancer risk

Dr. Sun and colleagues note that obesity is an established risk factor for several cancers. It is often accompanied by metabolic aberrations, which have been a commonly proposed mechanism to link obesity with cancer. During the last decade, obesity with or without metabolic aberrations – commonly termed “metabolically unhealthy” or “healthy obesity” – has been extensively investigated in the cardiovascular field; however, studies regarding cancer are limited.

According to Dr. Sun, this new study is the first to look at the synergistic effect of unhealthy metabolism and body mass index – the latter was further categorized as normal weight (BMI < 25 kg/m2), overweight (BMI < 30) and obesity (BMI ≤ 30) – and the association with cancer risk, both overall and in relation to site-specific cancers.

Data were drawn from 797,193 European individuals (in Norway, Sweden, and Austria), of whom 23,630 developed an obesity-related cancer during the follow-up period. A metabolic score comprising mid-blood pressure, plasma glucose, and triglycerides was used to provide a measure of healthy or unhealthy metabolic status. Relative risks (hazard ratios) for overall and site-specific cancers were determined. Comparisons were made with metabolically healthy people of normal weight (effectively controls).

When different metabolic scores and BMIs were combined, participants fell into six categories: metabolically unhealthy obesity (6.8% of participants); metabolically healthy obesity (3.4%), metabolically unhealthy overweight (15.4%), metabolically healthy overweight (19.8%), metabolically unhealthy normal weight (12.5%), and metabolically healthy normal weight (42.0%).

Metabolically unhealthy women with obesity had a hazard ratio of 1.43 for overall obesity-related cancers, compared with metabolically healthy women of normal weight. Of particular note were risks of two cancer types in women with metabolically unhealthy obesity: renal cancer, with an HR of 2.43, and endometrial cancer, with an HR of 3.0, compared with controls.

Even in metabolically healthy women with obesity, compared with metabolically healthy women of normal weight, there was an increased risk of endometrial cancer, with an HR of 2.36.

“If you look at individual cancers, in particular endometrial cancer, this seems to be very much driven by obesity and not so much by the metabolic factor,” remarked Dr. Stocks.

In males, compared with metabolically healthy men of normal weight, metabolically unhealthy men with obesity had an overall obesity-related cancer risk HR of 1.91. Specifically, the risk of renal cell cancer was more than doubled, with an HR of 2.59. The HR for colon cancer was 1.85, and that for rectal cancer and pancreatic cancer was similar, both having HRs of 1.32.

Again, risk was lower in metabolically healthy men with obesity, although still higher than for metabolically healthy normal-weight men.

A version of this article first appeared on Medscape.com.

In one of the first studies to examine this phenomenon, metabolically unhealthy obesity is associated with an increased risk, around 1.5-fold higher, of any obesity-related cancer, and an even higher risk, two- to threefold higher, for specific cancers, such as endometrial, liver, and renal cell cancers, compared with metabolically healthy normal weight.

Even in people with so-called “metabolically healthy” obesity, the risk for overall obesity-related cancer is increased, compared with normal-weight, metabolically healthy individuals; however, the associations here are weaker than in people with metabolically unhealthy obesity.

“The type of metabolic obesity phenotype is important when assessing obesity-related cancer risk,” lead researcher Ming Sun, PhD, from Lund University, Malmö, Sweden, said in an interview. “In general, metabolic aberrations further increased the obesity-induced cancer risk, suggesting that obesity and metabolic aberrations are useful targets for prevention.”

“This synergy means that when obesity and metabolic unhealth occur together, that’s particularly bad,” added Tanja Stocks, PhD, senior author, also of Lund University.

“But the data also highlight that even obesity and overweight alone comprise an increased risk of cancer,” Dr. Stocks noted.

Dr. Sun said the findings have important public health implications, suggesting that “a significant number of cancer cases could potentially be prevented by targeting the coexistence of metabolic problems and obesity, in particular for obesity-related cancers among men.”

The results will be presented as a poster by Dr. Sun at the European Congress on Obesity 2023, being held in Dublin, and have been published in the Journal of the National Cancer Institute.
 

Metabolically unhealthy obesity worst for cancer risks

Andrew G. Renehan, PhD, FRCS, professor of cancer studies and surgery, University of Manchester, England, welcomed the new work, saying it addresses the issue with very large study numbers. “[It] nicely demonstrates that there are clear examples where metabolically unhealthy overweight and obese phenotypes have increased cancer risk relative to [metabolically] healthy overweight and obese phenotypes,” he said.

“There is a clear need for clinically based research addressing these hypotheses ... but these studies will additionally need to factor in other dimensions such as the selection of treatment for metabolic aberrations, both medical and surgical, and the consequent metabolic control resulting from these interventions,” Dr. Renehan observed.

Vibhu Chittajallu, MD, a gastroenterologist based at University Hospitals Cleveland Medical Center, said it was beneficial to see another study further validating the association of obesity with the development of obesity-associated cancers.

“This is an interesting study [because it focuses] on the role of metabolic syndrome in obesity and how it affects the risk of development of obesity-associated cancers,” he said in an interview.

“I believe that the results of this study further strengthen the need for improved management of obesity and metabolic syndrome to reduce the risk of obesity-associated cancer formation that plays a role in preventable and premature deaths in adult patients with obesity.”
 

Synergy between metabolic aberrations and obesity, and cancer risk

Dr. Sun and colleagues note that obesity is an established risk factor for several cancers. It is often accompanied by metabolic aberrations, which have been a commonly proposed mechanism to link obesity with cancer. During the last decade, obesity with or without metabolic aberrations – commonly termed “metabolically unhealthy” or “healthy obesity” – has been extensively investigated in the cardiovascular field; however, studies regarding cancer are limited.

According to Dr. Sun, this new study is the first to look at the synergistic effect of unhealthy metabolism and body mass index – the latter was further categorized as normal weight (BMI < 25 kg/m2), overweight (BMI < 30) and obesity (BMI ≤ 30) – and the association with cancer risk, both overall and in relation to site-specific cancers.

Data were drawn from 797,193 European individuals (in Norway, Sweden, and Austria), of whom 23,630 developed an obesity-related cancer during the follow-up period. A metabolic score comprising mid-blood pressure, plasma glucose, and triglycerides was used to provide a measure of healthy or unhealthy metabolic status. Relative risks (hazard ratios) for overall and site-specific cancers were determined. Comparisons were made with metabolically healthy people of normal weight (effectively controls).

When different metabolic scores and BMIs were combined, participants fell into six categories: metabolically unhealthy obesity (6.8% of participants); metabolically healthy obesity (3.4%), metabolically unhealthy overweight (15.4%), metabolically healthy overweight (19.8%), metabolically unhealthy normal weight (12.5%), and metabolically healthy normal weight (42.0%).

Metabolically unhealthy women with obesity had a hazard ratio of 1.43 for overall obesity-related cancers, compared with metabolically healthy women of normal weight. Of particular note were risks of two cancer types in women with metabolically unhealthy obesity: renal cancer, with an HR of 2.43, and endometrial cancer, with an HR of 3.0, compared with controls.

Even in metabolically healthy women with obesity, compared with metabolically healthy women of normal weight, there was an increased risk of endometrial cancer, with an HR of 2.36.

“If you look at individual cancers, in particular endometrial cancer, this seems to be very much driven by obesity and not so much by the metabolic factor,” remarked Dr. Stocks.

In males, compared with metabolically healthy men of normal weight, metabolically unhealthy men with obesity had an overall obesity-related cancer risk HR of 1.91. Specifically, the risk of renal cell cancer was more than doubled, with an HR of 2.59. The HR for colon cancer was 1.85, and that for rectal cancer and pancreatic cancer was similar, both having HRs of 1.32.

Again, risk was lower in metabolically healthy men with obesity, although still higher than for metabolically healthy normal-weight men.

A version of this article first appeared on Medscape.com.

Subclinical hypothyroidism (SCH) is a biochemical state in which the thyroid-stimulating hormone (TSH) is elevated while the free thyroxine (T4) level is normal. Overt hypothyroidism is not diagnosed until the free T4 level is decreased, regardless of the degree of TSH elevation.

The overall prevalence of SCH in iodine-rich areas is 4% to 10%, with a risk for progression to overt hypothyroidism of between 2% and 6% annually.¹ The prevalence of SCH varies depending on the TSH reference range used.¹ The normal reference range for TSH varies depending on the laboratory and/or the reference population surveyed, with the range likely widening with increasing age.

SCH is most common among women, the elderly, and White individuals.² The discovery of SCH is often incidental, given that usually it is detected by laboratory findings alone without associated symptoms of overt hypothyroidism.³

The not-so-significant role of symptoms in subclinical hypothyroidism

Symptoms associated with overt hypothyroidism include constipation, dry skin, fatigue, slow thinking, poor memory, muscle cramps, weakness, and cold intolerance. In SCH, these symptoms are inconsistent, with around 1 in 3 patients having no symptoms at all.⁴

One study reported that roughly 18% of euthyroid individuals, 22% of SCH patients, and 26% of those with overt hypothyroidism reported 4 or more symptoms classically thought to be related to hypothyroidism.⁴ A large Danish cohort study found that hypothyroid symptoms were no more common in patients with SCH than in euthyroid individuals in the general population.⁵ These studies question the validity of attributing symptoms to SCH.

Adverse health associations

Observational data suggest that SCH is associated with an increased risk for dyslipidemia, coronary heart disease, heart failure, and cardiovascular mortality, particularly in those with TSH levels ≥ 10 mIU/L.^6,7 Such associations were not found for most adults with TSH levels between 5 and 10 mIU/L.⁸ There are also potential associations of SCH with obesity, nonalcoholic fatty liver disease, and nonalcoholic steatohepatitis.^9,10 Despite thyroid studies being commonly ordered as part of a mental health evaluation, SCH has not been statistically associated with depressive symptoms.^11,12

Caveats with laboratory testing

There are several issues to consider when performing a laboratory assessment of thyroid function. TSH levels fluctuate considerably during the day, as TSH secretion has a circadian rhythm. TSH values are 50% higher at night and in the early morning than during the rest of the day.¹³ TSH values also may rise in response to current illness or stress. Due to this biologic variability, repeat testing to confirm TSH levels is recommended if an initial test result is abnormal.¹⁴

Continue to: An exact reference range...

Supplements containing biotin should be withheld for several days before assessing thyroid function.

An exact reference range for TSH is not widely agreed upon—although most laboratories regard 4.0 to 5.0 mIU/L as the high-end cutoff for normal. Also, “normal” TSH levels appear to differ by age. Accordingly, some experts have recommended an age-based reference range for TSH levels,¹⁵ although this is not implemented widely by laboratories. A TSH level of 6.0 mIU/L (or even higher) may be more appropriate for adults older than 65 years.¹

Biotin supplementation has been shown to cause spurious thyroid testing results (TSH, T3, T4) depending on the type of assay used. Therefore, supplements containing biotin should be withheld for several days before assessing thyroid function.¹⁶Patients with SCH are often categorized as having TSH levels between 4.5 and 10 mIU/L (around 90% of patients) or levels ≥ 10 mIU/L.^8,17 If followed for 5 years, approximately 60% of patients with SCH and TSH levels between 4 and 10 mIU/L will normalize without intervention.¹⁸ Normalization is less common in patients with a TSH level greater than 10 mIU/L.¹⁸

The risk for progression to overt hypothyroidism also appears to be higher for those with certain risk factors. These include higher baseline TSH levels, presence of thyroid peroxidase antibodies (TPOAbs), or history of neck irradiation or radioactive iodine uptake.¹ Other risk factors for eventual thyroid dysfunction include female sex, older age, goiter, and high iodine intake.¹³

Evidence for treatment varies

Guidelines for the treatment of SCH (TABLE 1^8,14,19,20) are founded on the condition’s risk for progression to overt hypothyroidism and its association with health consequences such as cardiovascular disease. Guidelines of the American Thyroid Association (ATA) and European Thyroid Association (ETA), and those of the United Kingdom–based National Institute for Health and Care Excellence (NICE), prioritize treatment for individuals with a TSH level > 10 mIU/L^a and for those with TSH values < 10 mIU/L but still elevated and apparent symptoms of hypothyroidism.^14,19,20 The strength of evidence behind this guidance is challenged by a lack of data from prospective randomized controlled trials (RCTs) demonstrating health benefits following treatment of SCH. The British Medical Journal (BMJ) Guideline cites this lack of evidence and recommends against treating SCH at any TSH level, regardless of symptoms.⁸

There are few large RCTs of treatment outcomes for SCH. A 2017 RCT (the Thyroid Hormone Replacement for Untreated Older Adults with Subclinical Hypothyroidism, or TRUST, trial) of 737 adults older than 65 years with SCH evaluated the ability of levothyroxine to normalize TSH values compared with placebo. At 1 year, there was no difference in hypothyroid symptoms or tiredness scale scores with levothyroxine treatment compared with placebo.²¹ This finding was consistent even in the subgroup with a higher baseline symptom burden.²²

Continue to: Two small RCTs evaluated...

Two small RCTs evaluated treatment of SCH with depressive symptoms and cognitive function, neither finding benefit compared with placebo.^12,23 A 2018 systematic review and meta-analysis of 21 studies and 2192 adults did not show a benefit to quality of life or thyroid-specific symptoms in those treated for SCH compared with controls.²⁴

RCT support also is lacking for a reduction in cardiovascular mortality following treatment for SCH. A large population-level retrospective cohort from Denmark showed no difference in cardiovascular mortality or myocardial infarction in those treated for SCH compared with controls.²⁵ Pooled results from 2 RCTs (for patients older than 65 years, and those older than 80 years) showed no change in risk for cardiovascular outcomes in older adults treated for SCH.²⁶ Older adults treated for SCH in the TRUST trial showed no improvements in systolic or diastolic­ function on echocardiography.^27­ Two trials showed no difference in carotid intima-media thickness with treatment of SCH compared with placebo.^28,29

While most of the RCT data come from older adults, a retrospective cohort study in the United Kingdom of younger (ages 40-70 years; n = 3093) and older (age > 70 years; n = 1642) patients showed a reduction in cardiovascular mortality among treated patients who were younger (hazard ratio [HR] = 0.61; 4.2% vs. 6.6%) but not those who were older (HR = 0.99; 12.7% vs. 10.7%).³⁰ There is also evidence that thyroid size in those with goiter can be reduced with treatment of SCH.³¹

A measured approach to treating subclinical hypothyroidism

Consider several factors when deciding whether to treat SCH. For instance, RCT data suggest a lack of treatment benefit in relieving depression, improving cognition, or reducing general hypothyroid symptoms. Treatment of SCH in older adults does not appear to improve cardiovascular outcomes. The question of whether long-term treatment of SCH in younger patients reduces cardiovascular morbidity or mortality lacks answers from RCTs. Before diagnosing SCH or starting treatment, always confirm SCH with repeat testing in 2 to 3 months, as a high percentage of those with untreated SCH will have normal thyroid function on repeat testing.

Before diagnosing subclinical hypothyroidism (SCH) or starting treatment, always confirm SCH with repeat testing in 2 to 3 months.

In the event you and your patient elect to treat SCH, guidelines and trials generally support a low initial daily dose of 25 to 50 mcg of levothyroxine (T4), followed with dose changes­ every 4 to 8 weeks and a goal of normalizing TSH to within the lower half of the reference range (0.4-2.5 mIU/L).¹⁴ This is generally similar to published treatment goals for primary hypothyroidism and is based on studies suggesting the lower half of the reference range is normal for young, healthy, euthyroid individuals.³² Though full replacement doses (1.6-1.8 mcg/kg of ideal body weight) can be started for those who are elderly or who have ischemic heart disease or angina, this approach should be avoided in favor of low-dose initial therapy.³³ Thyroid supplements are best absorbed when taken apart from food, calcium, or iron supplements. The ATA suggests taking thyroid medication 60 minutes before breakfast or at bedtime (3 or more hours after the evening meal).³³

Continue to: Screening guidelines differ

Lacking population-level screening data from RCTs, most organizations do not recommend screening for thyroid dysfunction or they note insufficient evidence to make a screening recommendation (TABLE 2^17,19,20,34). In their most recent recommendation statement on the subject in 2015, the US Preventive Services Task Force (USPSTF) concluded the current evidence was insufficient to recommend for or against thyroid dysfunction screening in nonpregnant, asymptomatic adults.¹⁷ This differs from the ATA and the American Association of Clinical Endocrinology (AACE; formerly known as the American Association of Clinical Endocrinologists), which both recommend targeted screening for thyroid dysfunction based on symptoms or risk factors.²⁰

What about subclinical hypothyroidism in pregnancy?

Overt hypothyroidism is associated with adverse events during pregnancy and with subsequent neurodevelopmental complications in children, although the effects of SCH during pregnancy remain less certain. Concerns have been raised over the potential association of SCH with pregnancy loss, placental abruption, premature rupture of membranes, and neonatal death.³⁵ Historically, the prevalence of SCH during pregnancy has ranged from 2% to 2.5%, but using lower trimester-based TSH reference ranges, the prevalence of SCH in pregnancy may be as high as 15%.³⁵

Guided by a large RCT that failed to find benefit (pregnancy outcomes, neurodevelopmental outcomes in children) following treatment of SCH in pregnancy,³⁶ the American College of Obstetricians and Gynecologists (ACOG) recommends against routine screening for thyroid disease in pregnancy.³⁴ The ATA notes insufficient evidence to rec-ommend universal screening for thyroid dysfunction in pregnancy but recommends targeted screening of those with risk factors.³⁷ Data are conflicting on the benefit of treating known or recently detected SCH on pregnancy outcomes including pregnancy loss.^35,38 As such, the American Society of Reproductive Medicine and the ATA both generally recommend treatment of SCH in pregnant patients, particularly when the TSH is ≥ 4.0 mIU/L and TPOAbs are present.^37,39

^a The ATA, ETA, and NICE have slightly different recommendations when a TSH level = 10 mIU/L. ETA and NICE recommend prioritizing treatment for individuals with this level, while ATA recommends treatment when individual factors are also considered.

ACKNOWLEDGEMENT
The authors thank Family Medicine Medical Librarian Gwen Wilson, MLS, AHIP, for her assistance with literature searches.

CORRESPONDENCE
Nicholas LeFevre, MD, Family and Community Medicine, University of Missouri–Columbia School of Medicine, One Hospital Drive, M224 Medical Science Building, Columbia, MO 65212; [email protected]

Subclinical hypothyroidism (SCH) is a biochemical state in which the thyroid-stimulating hormone (TSH) is elevated while the free thyroxine (T4) level is normal. Overt hypothyroidism is not diagnosed until the free T4 level is decreased, regardless of the degree of TSH elevation.

The overall prevalence of SCH in iodine-rich areas is 4% to 10%, with a risk for progression to overt hypothyroidism of between 2% and 6% annually.¹ The prevalence of SCH varies depending on the TSH reference range used.¹ The normal reference range for TSH varies depending on the laboratory and/or the reference population surveyed, with the range likely widening with increasing age.

SCH is most common among women, the elderly, and White individuals.² The discovery of SCH is often incidental, given that usually it is detected by laboratory findings alone without associated symptoms of overt hypothyroidism.³

The not-so-significant role of symptoms in subclinical hypothyroidism

Symptoms associated with overt hypothyroidism include constipation, dry skin, fatigue, slow thinking, poor memory, muscle cramps, weakness, and cold intolerance. In SCH, these symptoms are inconsistent, with around 1 in 3 patients having no symptoms at all.⁴

One study reported that roughly 18% of euthyroid individuals, 22% of SCH patients, and 26% of those with overt hypothyroidism reported 4 or more symptoms classically thought to be related to hypothyroidism.⁴ A large Danish cohort study found that hypothyroid symptoms were no more common in patients with SCH than in euthyroid individuals in the general population.⁵ These studies question the validity of attributing symptoms to SCH.

Adverse health associations

Observational data suggest that SCH is associated with an increased risk for dyslipidemia, coronary heart disease, heart failure, and cardiovascular mortality, particularly in those with TSH levels ≥ 10 mIU/L.^6,7 Such associations were not found for most adults with TSH levels between 5 and 10 mIU/L.⁸ There are also potential associations of SCH with obesity, nonalcoholic fatty liver disease, and nonalcoholic steatohepatitis.^9,10 Despite thyroid studies being commonly ordered as part of a mental health evaluation, SCH has not been statistically associated with depressive symptoms.^11,12

Caveats with laboratory testing

There are several issues to consider when performing a laboratory assessment of thyroid function. TSH levels fluctuate considerably during the day, as TSH secretion has a circadian rhythm. TSH values are 50% higher at night and in the early morning than during the rest of the day.¹³ TSH values also may rise in response to current illness or stress. Due to this biologic variability, repeat testing to confirm TSH levels is recommended if an initial test result is abnormal.¹⁴

Continue to: An exact reference range...

Supplements containing biotin should be withheld for several days before assessing thyroid function.

An exact reference range for TSH is not widely agreed upon—although most laboratories regard 4.0 to 5.0 mIU/L as the high-end cutoff for normal. Also, “normal” TSH levels appear to differ by age. Accordingly, some experts have recommended an age-based reference range for TSH levels,¹⁵ although this is not implemented widely by laboratories. A TSH level of 6.0 mIU/L (or even higher) may be more appropriate for adults older than 65 years.¹

Biotin supplementation has been shown to cause spurious thyroid testing results (TSH, T3, T4) depending on the type of assay used. Therefore, supplements containing biotin should be withheld for several days before assessing thyroid function.¹⁶Patients with SCH are often categorized as having TSH levels between 4.5 and 10 mIU/L (around 90% of patients) or levels ≥ 10 mIU/L.^8,17 If followed for 5 years, approximately 60% of patients with SCH and TSH levels between 4 and 10 mIU/L will normalize without intervention.¹⁸ Normalization is less common in patients with a TSH level greater than 10 mIU/L.¹⁸

The risk for progression to overt hypothyroidism also appears to be higher for those with certain risk factors. These include higher baseline TSH levels, presence of thyroid peroxidase antibodies (TPOAbs), or history of neck irradiation or radioactive iodine uptake.¹ Other risk factors for eventual thyroid dysfunction include female sex, older age, goiter, and high iodine intake.¹³

Evidence for treatment varies

Guidelines for the treatment of SCH (TABLE 1^8,14,19,20) are founded on the condition’s risk for progression to overt hypothyroidism and its association with health consequences such as cardiovascular disease. Guidelines of the American Thyroid Association (ATA) and European Thyroid Association (ETA), and those of the United Kingdom–based National Institute for Health and Care Excellence (NICE), prioritize treatment for individuals with a TSH level > 10 mIU/L^a and for those with TSH values < 10 mIU/L but still elevated and apparent symptoms of hypothyroidism.^14,19,20 The strength of evidence behind this guidance is challenged by a lack of data from prospective randomized controlled trials (RCTs) demonstrating health benefits following treatment of SCH. The British Medical Journal (BMJ) Guideline cites this lack of evidence and recommends against treating SCH at any TSH level, regardless of symptoms.⁸

There are few large RCTs of treatment outcomes for SCH. A 2017 RCT (the Thyroid Hormone Replacement for Untreated Older Adults with Subclinical Hypothyroidism, or TRUST, trial) of 737 adults older than 65 years with SCH evaluated the ability of levothyroxine to normalize TSH values compared with placebo. At 1 year, there was no difference in hypothyroid symptoms or tiredness scale scores with levothyroxine treatment compared with placebo.²¹ This finding was consistent even in the subgroup with a higher baseline symptom burden.²²

Continue to: Two small RCTs evaluated...

Two small RCTs evaluated treatment of SCH with depressive symptoms and cognitive function, neither finding benefit compared with placebo.^12,23 A 2018 systematic review and meta-analysis of 21 studies and 2192 adults did not show a benefit to quality of life or thyroid-specific symptoms in those treated for SCH compared with controls.²⁴

RCT support also is lacking for a reduction in cardiovascular mortality following treatment for SCH. A large population-level retrospective cohort from Denmark showed no difference in cardiovascular mortality or myocardial infarction in those treated for SCH compared with controls.²⁵ Pooled results from 2 RCTs (for patients older than 65 years, and those older than 80 years) showed no change in risk for cardiovascular outcomes in older adults treated for SCH.²⁶ Older adults treated for SCH in the TRUST trial showed no improvements in systolic or diastolic­ function on echocardiography.^27­ Two trials showed no difference in carotid intima-media thickness with treatment of SCH compared with placebo.^28,29

While most of the RCT data come from older adults, a retrospective cohort study in the United Kingdom of younger (ages 40-70 years; n = 3093) and older (age > 70 years; n = 1642) patients showed a reduction in cardiovascular mortality among treated patients who were younger (hazard ratio [HR] = 0.61; 4.2% vs. 6.6%) but not those who were older (HR = 0.99; 12.7% vs. 10.7%).³⁰ There is also evidence that thyroid size in those with goiter can be reduced with treatment of SCH.³¹

A measured approach to treating subclinical hypothyroidism

Consider several factors when deciding whether to treat SCH. For instance, RCT data suggest a lack of treatment benefit in relieving depression, improving cognition, or reducing general hypothyroid symptoms. Treatment of SCH in older adults does not appear to improve cardiovascular outcomes. The question of whether long-term treatment of SCH in younger patients reduces cardiovascular morbidity or mortality lacks answers from RCTs. Before diagnosing SCH or starting treatment, always confirm SCH with repeat testing in 2 to 3 months, as a high percentage of those with untreated SCH will have normal thyroid function on repeat testing.

Before diagnosing subclinical hypothyroidism (SCH) or starting treatment, always confirm SCH with repeat testing in 2 to 3 months.

In the event you and your patient elect to treat SCH, guidelines and trials generally support a low initial daily dose of 25 to 50 mcg of levothyroxine (T4), followed with dose changes­ every 4 to 8 weeks and a goal of normalizing TSH to within the lower half of the reference range (0.4-2.5 mIU/L).¹⁴ This is generally similar to published treatment goals for primary hypothyroidism and is based on studies suggesting the lower half of the reference range is normal for young, healthy, euthyroid individuals.³² Though full replacement doses (1.6-1.8 mcg/kg of ideal body weight) can be started for those who are elderly or who have ischemic heart disease or angina, this approach should be avoided in favor of low-dose initial therapy.³³ Thyroid supplements are best absorbed when taken apart from food, calcium, or iron supplements. The ATA suggests taking thyroid medication 60 minutes before breakfast or at bedtime (3 or more hours after the evening meal).³³

Continue to: Screening guidelines differ

Lacking population-level screening data from RCTs, most organizations do not recommend screening for thyroid dysfunction or they note insufficient evidence to make a screening recommendation (TABLE 2^17,19,20,34). In their most recent recommendation statement on the subject in 2015, the US Preventive Services Task Force (USPSTF) concluded the current evidence was insufficient to recommend for or against thyroid dysfunction screening in nonpregnant, asymptomatic adults.¹⁷ This differs from the ATA and the American Association of Clinical Endocrinology (AACE; formerly known as the American Association of Clinical Endocrinologists), which both recommend targeted screening for thyroid dysfunction based on symptoms or risk factors.²⁰

What about subclinical hypothyroidism in pregnancy?

Overt hypothyroidism is associated with adverse events during pregnancy and with subsequent neurodevelopmental complications in children, although the effects of SCH during pregnancy remain less certain. Concerns have been raised over the potential association of SCH with pregnancy loss, placental abruption, premature rupture of membranes, and neonatal death.³⁵ Historically, the prevalence of SCH during pregnancy has ranged from 2% to 2.5%, but using lower trimester-based TSH reference ranges, the prevalence of SCH in pregnancy may be as high as 15%.³⁵

Guided by a large RCT that failed to find benefit (pregnancy outcomes, neurodevelopmental outcomes in children) following treatment of SCH in pregnancy,³⁶ the American College of Obstetricians and Gynecologists (ACOG) recommends against routine screening for thyroid disease in pregnancy.³⁴ The ATA notes insufficient evidence to rec-ommend universal screening for thyroid dysfunction in pregnancy but recommends targeted screening of those with risk factors.³⁷ Data are conflicting on the benefit of treating known or recently detected SCH on pregnancy outcomes including pregnancy loss.^35,38 As such, the American Society of Reproductive Medicine and the ATA both generally recommend treatment of SCH in pregnant patients, particularly when the TSH is ≥ 4.0 mIU/L and TPOAbs are present.^37,39

^a The ATA, ETA, and NICE have slightly different recommendations when a TSH level = 10 mIU/L. ETA and NICE recommend prioritizing treatment for individuals with this level, while ATA recommends treatment when individual factors are also considered.

ACKNOWLEDGEMENT
The authors thank Family Medicine Medical Librarian Gwen Wilson, MLS, AHIP, for her assistance with literature searches.

CORRESPONDENCE
Nicholas LeFevre, MD, Family and Community Medicine, University of Missouri–Columbia School of Medicine, One Hospital Drive, M224 Medical Science Building, Columbia, MO 65212; [email protected]

Subclinical hypothyroidism (SCH) is a biochemical state in which the thyroid-stimulating hormone (TSH) is elevated while the free thyroxine (T4) level is normal. Overt hypothyroidism is not diagnosed until the free T4 level is decreased, regardless of the degree of TSH elevation.

The overall prevalence of SCH in iodine-rich areas is 4% to 10%, with a risk for progression to overt hypothyroidism of between 2% and 6% annually.¹ The prevalence of SCH varies depending on the TSH reference range used.¹ The normal reference range for TSH varies depending on the laboratory and/or the reference population surveyed, with the range likely widening with increasing age.

SCH is most common among women, the elderly, and White individuals.² The discovery of SCH is often incidental, given that usually it is detected by laboratory findings alone without associated symptoms of overt hypothyroidism.³

The not-so-significant role of symptoms in subclinical hypothyroidism

Symptoms associated with overt hypothyroidism include constipation, dry skin, fatigue, slow thinking, poor memory, muscle cramps, weakness, and cold intolerance. In SCH, these symptoms are inconsistent, with around 1 in 3 patients having no symptoms at all.⁴

One study reported that roughly 18% of euthyroid individuals, 22% of SCH patients, and 26% of those with overt hypothyroidism reported 4 or more symptoms classically thought to be related to hypothyroidism.⁴ A large Danish cohort study found that hypothyroid symptoms were no more common in patients with SCH than in euthyroid individuals in the general population.⁵ These studies question the validity of attributing symptoms to SCH.

Adverse health associations

Observational data suggest that SCH is associated with an increased risk for dyslipidemia, coronary heart disease, heart failure, and cardiovascular mortality, particularly in those with TSH levels ≥ 10 mIU/L.^6,7 Such associations were not found for most adults with TSH levels between 5 and 10 mIU/L.⁸ There are also potential associations of SCH with obesity, nonalcoholic fatty liver disease, and nonalcoholic steatohepatitis.^9,10 Despite thyroid studies being commonly ordered as part of a mental health evaluation, SCH has not been statistically associated with depressive symptoms.^11,12

Caveats with laboratory testing

There are several issues to consider when performing a laboratory assessment of thyroid function. TSH levels fluctuate considerably during the day, as TSH secretion has a circadian rhythm. TSH values are 50% higher at night and in the early morning than during the rest of the day.¹³ TSH values also may rise in response to current illness or stress. Due to this biologic variability, repeat testing to confirm TSH levels is recommended if an initial test result is abnormal.¹⁴

Continue to: An exact reference range...

Supplements containing biotin should be withheld for several days before assessing thyroid function.

An exact reference range for TSH is not widely agreed upon—although most laboratories regard 4.0 to 5.0 mIU/L as the high-end cutoff for normal. Also, “normal” TSH levels appear to differ by age. Accordingly, some experts have recommended an age-based reference range for TSH levels,¹⁵ although this is not implemented widely by laboratories. A TSH level of 6.0 mIU/L (or even higher) may be more appropriate for adults older than 65 years.¹

Biotin supplementation has been shown to cause spurious thyroid testing results (TSH, T3, T4) depending on the type of assay used. Therefore, supplements containing biotin should be withheld for several days before assessing thyroid function.¹⁶Patients with SCH are often categorized as having TSH levels between 4.5 and 10 mIU/L (around 90% of patients) or levels ≥ 10 mIU/L.^8,17 If followed for 5 years, approximately 60% of patients with SCH and TSH levels between 4 and 10 mIU/L will normalize without intervention.¹⁸ Normalization is less common in patients with a TSH level greater than 10 mIU/L.¹⁸

The risk for progression to overt hypothyroidism also appears to be higher for those with certain risk factors. These include higher baseline TSH levels, presence of thyroid peroxidase antibodies (TPOAbs), or history of neck irradiation or radioactive iodine uptake.¹ Other risk factors for eventual thyroid dysfunction include female sex, older age, goiter, and high iodine intake.¹³

Evidence for treatment varies

Guidelines for the treatment of SCH (TABLE 1^8,14,19,20) are founded on the condition’s risk for progression to overt hypothyroidism and its association with health consequences such as cardiovascular disease. Guidelines of the American Thyroid Association (ATA) and European Thyroid Association (ETA), and those of the United Kingdom–based National Institute for Health and Care Excellence (NICE), prioritize treatment for individuals with a TSH level > 10 mIU/L^a and for those with TSH values < 10 mIU/L but still elevated and apparent symptoms of hypothyroidism.^14,19,20 The strength of evidence behind this guidance is challenged by a lack of data from prospective randomized controlled trials (RCTs) demonstrating health benefits following treatment of SCH. The British Medical Journal (BMJ) Guideline cites this lack of evidence and recommends against treating SCH at any TSH level, regardless of symptoms.⁸

There are few large RCTs of treatment outcomes for SCH. A 2017 RCT (the Thyroid Hormone Replacement for Untreated Older Adults with Subclinical Hypothyroidism, or TRUST, trial) of 737 adults older than 65 years with SCH evaluated the ability of levothyroxine to normalize TSH values compared with placebo. At 1 year, there was no difference in hypothyroid symptoms or tiredness scale scores with levothyroxine treatment compared with placebo.²¹ This finding was consistent even in the subgroup with a higher baseline symptom burden.²²

Continue to: Two small RCTs evaluated...

Two small RCTs evaluated treatment of SCH with depressive symptoms and cognitive function, neither finding benefit compared with placebo.^12,23 A 2018 systematic review and meta-analysis of 21 studies and 2192 adults did not show a benefit to quality of life or thyroid-specific symptoms in those treated for SCH compared with controls.²⁴

RCT support also is lacking for a reduction in cardiovascular mortality following treatment for SCH. A large population-level retrospective cohort from Denmark showed no difference in cardiovascular mortality or myocardial infarction in those treated for SCH compared with controls.²⁵ Pooled results from 2 RCTs (for patients older than 65 years, and those older than 80 years) showed no change in risk for cardiovascular outcomes in older adults treated for SCH.²⁶ Older adults treated for SCH in the TRUST trial showed no improvements in systolic or diastolic­ function on echocardiography.^27­ Two trials showed no difference in carotid intima-media thickness with treatment of SCH compared with placebo.^28,29

While most of the RCT data come from older adults, a retrospective cohort study in the United Kingdom of younger (ages 40-70 years; n = 3093) and older (age > 70 years; n = 1642) patients showed a reduction in cardiovascular mortality among treated patients who were younger (hazard ratio [HR] = 0.61; 4.2% vs. 6.6%) but not those who were older (HR = 0.99; 12.7% vs. 10.7%).³⁰ There is also evidence that thyroid size in those with goiter can be reduced with treatment of SCH.³¹

A measured approach to treating subclinical hypothyroidism

Consider several factors when deciding whether to treat SCH. For instance, RCT data suggest a lack of treatment benefit in relieving depression, improving cognition, or reducing general hypothyroid symptoms. Treatment of SCH in older adults does not appear to improve cardiovascular outcomes. The question of whether long-term treatment of SCH in younger patients reduces cardiovascular morbidity or mortality lacks answers from RCTs. Before diagnosing SCH or starting treatment, always confirm SCH with repeat testing in 2 to 3 months, as a high percentage of those with untreated SCH will have normal thyroid function on repeat testing.

Before diagnosing subclinical hypothyroidism (SCH) or starting treatment, always confirm SCH with repeat testing in 2 to 3 months.

In the event you and your patient elect to treat SCH, guidelines and trials generally support a low initial daily dose of 25 to 50 mcg of levothyroxine (T4), followed with dose changes­ every 4 to 8 weeks and a goal of normalizing TSH to within the lower half of the reference range (0.4-2.5 mIU/L).¹⁴ This is generally similar to published treatment goals for primary hypothyroidism and is based on studies suggesting the lower half of the reference range is normal for young, healthy, euthyroid individuals.³² Though full replacement doses (1.6-1.8 mcg/kg of ideal body weight) can be started for those who are elderly or who have ischemic heart disease or angina, this approach should be avoided in favor of low-dose initial therapy.³³ Thyroid supplements are best absorbed when taken apart from food, calcium, or iron supplements. The ATA suggests taking thyroid medication 60 minutes before breakfast or at bedtime (3 or more hours after the evening meal).³³

Continue to: Screening guidelines differ

Lacking population-level screening data from RCTs, most organizations do not recommend screening for thyroid dysfunction or they note insufficient evidence to make a screening recommendation (TABLE 2^17,19,20,34). In their most recent recommendation statement on the subject in 2015, the US Preventive Services Task Force (USPSTF) concluded the current evidence was insufficient to recommend for or against thyroid dysfunction screening in nonpregnant, asymptomatic adults.¹⁷ This differs from the ATA and the American Association of Clinical Endocrinology (AACE; formerly known as the American Association of Clinical Endocrinologists), which both recommend targeted screening for thyroid dysfunction based on symptoms or risk factors.²⁰

What about subclinical hypothyroidism in pregnancy?

Overt hypothyroidism is associated with adverse events during pregnancy and with subsequent neurodevelopmental complications in children, although the effects of SCH during pregnancy remain less certain. Concerns have been raised over the potential association of SCH with pregnancy loss, placental abruption, premature rupture of membranes, and neonatal death.³⁵ Historically, the prevalence of SCH during pregnancy has ranged from 2% to 2.5%, but using lower trimester-based TSH reference ranges, the prevalence of SCH in pregnancy may be as high as 15%.³⁵

Guided by a large RCT that failed to find benefit (pregnancy outcomes, neurodevelopmental outcomes in children) following treatment of SCH in pregnancy,³⁶ the American College of Obstetricians and Gynecologists (ACOG) recommends against routine screening for thyroid disease in pregnancy.³⁴ The ATA notes insufficient evidence to rec-ommend universal screening for thyroid dysfunction in pregnancy but recommends targeted screening of those with risk factors.³⁷ Data are conflicting on the benefit of treating known or recently detected SCH on pregnancy outcomes including pregnancy loss.^35,38 As such, the American Society of Reproductive Medicine and the ATA both generally recommend treatment of SCH in pregnant patients, particularly when the TSH is ≥ 4.0 mIU/L and TPOAbs are present.^37,39

^a The ATA, ETA, and NICE have slightly different recommendations when a TSH level = 10 mIU/L. ETA and NICE recommend prioritizing treatment for individuals with this level, while ATA recommends treatment when individual factors are also considered.

ACKNOWLEDGEMENT
The authors thank Family Medicine Medical Librarian Gwen Wilson, MLS, AHIP, for her assistance with literature searches.

CORRESPONDENCE
Nicholas LeFevre, MD, Family and Community Medicine, University of Missouri–Columbia School of Medicine, One Hospital Drive, M224 Medical Science Building, Columbia, MO 65212; [email protected]

SEATTLE – Tissue accumulation of advanced glycation end products (AGEs) is associated with the presence of hypercortisolism, suggesting a potential future noninvasive method to assist in the diagnosis of Cushing syndrome, new research suggests.
 

Tissue accumulation of AGEs – harmful compounds formed by glycation of macromolecules – has been implicated in aging, diabetes, and cardiovascular disease. Now, in a new single-center prospective study, a group of 208 patients with endogenous hypercortisolism was found to have significantly higher median tissue AGE levels than 103 reference subjects without hypercortisolism.

The findings were presented at the annual meeting of the American Association of Clinical Endocrinology by Rashi Sandooja, MD, an endocrinology fellow at the Mayo Clinic, Rochester, Minn.

“Diagnosis of endogenous hypercortisolism can be quite challenging. Often patients can have nonspecific symptoms with biochemical testing being equivocal. In these situations, new biomarkers of hypercortisolism such as AGE measurement could potentially be useful,” Dr. Sandooja said in an interview.

“After proper validation, it could help clinicians in cases which may not be straightforward and could serve as an additional” instrument in the toolkit to reach a conclusive diagnosis, she added.

Asked to comment, session moderator Anupam Kotwal, MD, said in an interview: “I think it’s very exciting data. ... I envision its use in mild autonomous cortisol secretion, where there are not a lot of overt Cushing features but they may have a small adrenal mass. ... It might be used to guide care when there’s not a clear-cut answer.”

However, he cautioned that more validation is needed to determine the correlates of AGEs by different etiologies and magnitudes of cortisol excess.

Moreover, “skin can become thin in hypercortisolism, so is [the reader device] just detecting it more with skin testing? I think a blood test for validation would be a very good next step,” added Dr. Kotwal, who is an assistant professor in the division of diabetes, endocrinology and metabolism at the University of Nebraska, Omaha.
 

More work will be needed

Future directions for research should include adding a longitudinal arm and looking at the impact on AGE after patients undergo curative surgery and achieve remission, Dr. Sandooja explained.

“It will be interesting to see if AGE levels continue to be persistently high or decrease after patients achieve sustained remission of hypercortisolism. We are also interested in whether AGE measurement at baseline, prior to surgery may be associated with glucocorticoid withdrawal, myopathy, and metabolic outcomes following the surgery.”

Dr. Kotwal observed: “If the answer is clear for Cushing disease, I don’t know what extra information this would give. Maybe they would monitor people more closely afterward. It would be useful to see, but I think the first low-hanging fruit is use it in a way to guide the care of patients where we’re unclear as to whether initial treatment of this [mild autonomous cortisol secretion] is going to improve their outcomes.”

But, he added, “keeping in mind issues of skin ... we don’t want to distract clinicians and patients from using the tried and tested methods of characterizing Cushing syndrome. I’m always hesitant to bring something into practice before there is a little more information on how it can be used.”

Dr. Sandooja and Dr. Kotwal reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

SEATTLE – Tissue accumulation of advanced glycation end products (AGEs) is associated with the presence of hypercortisolism, suggesting a potential future noninvasive method to assist in the diagnosis of Cushing syndrome, new research suggests.
 

Tissue accumulation of AGEs – harmful compounds formed by glycation of macromolecules – has been implicated in aging, diabetes, and cardiovascular disease. Now, in a new single-center prospective study, a group of 208 patients with endogenous hypercortisolism was found to have significantly higher median tissue AGE levels than 103 reference subjects without hypercortisolism.

The findings were presented at the annual meeting of the American Association of Clinical Endocrinology by Rashi Sandooja, MD, an endocrinology fellow at the Mayo Clinic, Rochester, Minn.

“Diagnosis of endogenous hypercortisolism can be quite challenging. Often patients can have nonspecific symptoms with biochemical testing being equivocal. In these situations, new biomarkers of hypercortisolism such as AGE measurement could potentially be useful,” Dr. Sandooja said in an interview.

“After proper validation, it could help clinicians in cases which may not be straightforward and could serve as an additional” instrument in the toolkit to reach a conclusive diagnosis, she added.

Asked to comment, session moderator Anupam Kotwal, MD, said in an interview: “I think it’s very exciting data. ... I envision its use in mild autonomous cortisol secretion, where there are not a lot of overt Cushing features but they may have a small adrenal mass. ... It might be used to guide care when there’s not a clear-cut answer.”

However, he cautioned that more validation is needed to determine the correlates of AGEs by different etiologies and magnitudes of cortisol excess.

Moreover, “skin can become thin in hypercortisolism, so is [the reader device] just detecting it more with skin testing? I think a blood test for validation would be a very good next step,” added Dr. Kotwal, who is an assistant professor in the division of diabetes, endocrinology and metabolism at the University of Nebraska, Omaha.
 

More work will be needed

Future directions for research should include adding a longitudinal arm and looking at the impact on AGE after patients undergo curative surgery and achieve remission, Dr. Sandooja explained.

“It will be interesting to see if AGE levels continue to be persistently high or decrease after patients achieve sustained remission of hypercortisolism. We are also interested in whether AGE measurement at baseline, prior to surgery may be associated with glucocorticoid withdrawal, myopathy, and metabolic outcomes following the surgery.”

Dr. Kotwal observed: “If the answer is clear for Cushing disease, I don’t know what extra information this would give. Maybe they would monitor people more closely afterward. It would be useful to see, but I think the first low-hanging fruit is use it in a way to guide the care of patients where we’re unclear as to whether initial treatment of this [mild autonomous cortisol secretion] is going to improve their outcomes.”

But, he added, “keeping in mind issues of skin ... we don’t want to distract clinicians and patients from using the tried and tested methods of characterizing Cushing syndrome. I’m always hesitant to bring something into practice before there is a little more information on how it can be used.”

Dr. Sandooja and Dr. Kotwal reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

SEATTLE – Tissue accumulation of advanced glycation end products (AGEs) is associated with the presence of hypercortisolism, suggesting a potential future noninvasive method to assist in the diagnosis of Cushing syndrome, new research suggests.
 

Tissue accumulation of AGEs – harmful compounds formed by glycation of macromolecules – has been implicated in aging, diabetes, and cardiovascular disease. Now, in a new single-center prospective study, a group of 208 patients with endogenous hypercortisolism was found to have significantly higher median tissue AGE levels than 103 reference subjects without hypercortisolism.

The findings were presented at the annual meeting of the American Association of Clinical Endocrinology by Rashi Sandooja, MD, an endocrinology fellow at the Mayo Clinic, Rochester, Minn.

“Diagnosis of endogenous hypercortisolism can be quite challenging. Often patients can have nonspecific symptoms with biochemical testing being equivocal. In these situations, new biomarkers of hypercortisolism such as AGE measurement could potentially be useful,” Dr. Sandooja said in an interview.

“After proper validation, it could help clinicians in cases which may not be straightforward and could serve as an additional” instrument in the toolkit to reach a conclusive diagnosis, she added.

Asked to comment, session moderator Anupam Kotwal, MD, said in an interview: “I think it’s very exciting data. ... I envision its use in mild autonomous cortisol secretion, where there are not a lot of overt Cushing features but they may have a small adrenal mass. ... It might be used to guide care when there’s not a clear-cut answer.”

However, he cautioned that more validation is needed to determine the correlates of AGEs by different etiologies and magnitudes of cortisol excess.

Moreover, “skin can become thin in hypercortisolism, so is [the reader device] just detecting it more with skin testing? I think a blood test for validation would be a very good next step,” added Dr. Kotwal, who is an assistant professor in the division of diabetes, endocrinology and metabolism at the University of Nebraska, Omaha.
 

More work will be needed

Future directions for research should include adding a longitudinal arm and looking at the impact on AGE after patients undergo curative surgery and achieve remission, Dr. Sandooja explained.

“It will be interesting to see if AGE levels continue to be persistently high or decrease after patients achieve sustained remission of hypercortisolism. We are also interested in whether AGE measurement at baseline, prior to surgery may be associated with glucocorticoid withdrawal, myopathy, and metabolic outcomes following the surgery.”

Dr. Kotwal observed: “If the answer is clear for Cushing disease, I don’t know what extra information this would give. Maybe they would monitor people more closely afterward. It would be useful to see, but I think the first low-hanging fruit is use it in a way to guide the care of patients where we’re unclear as to whether initial treatment of this [mild autonomous cortisol secretion] is going to improve their outcomes.”

But, he added, “keeping in mind issues of skin ... we don’t want to distract clinicians and patients from using the tried and tested methods of characterizing Cushing syndrome. I’m always hesitant to bring something into practice before there is a little more information on how it can be used.”

Dr. Sandooja and Dr. Kotwal reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Statins have disease-modifying potential in people with noncirrhotic chronic liver disease (CLD) by reducing the risk for progression to severe liver disease, new research shows.

The Swedish population-based study found that adults with noncirrhotic CLD who were on statin therapy had a statistically significant 40% lower risk of developing severe liver disease, compared with matched patients who were not on statin therapy.

©rogerashford/Thinkstock

The statin users were also less apt to progress to cirrhosis or hepatocellular carcinoma (HCC) and to die of liver disease, Rajani Sharma, MD, MSc, division of digestive and liver diseases, Columbia University Irving Medical Center, New York, and colleagues reported.

Their study was published online in Clinical Gastroenterology and Hepatology.
 

More than just cholesterol lowering

The study “continues the theme that cholesterol-lowering statins are good for a lot more things than just lowering cholesterol,” William Carey, MD, who wasn’t involved with the study, said in an interview.

The results are “very consistent with other trials that show that people with liver disease on statins do better in many respects than those who are not on statins,” said Dr. Carey, acting head of the hepatology section, department of gastroenterology, hepatology, and nutrition, Cleveland Clinic.

“The effects are not trivial,” Dr. Carey added. “It’s a very significant advantage in terms of fibrosis progression and survival.”

Statins have been shown to inhibit inflammatory pathways, promote endothelial cell function, and reduce hepatic stellate cell activity, suggesting that statins could lessen the progression of liver fibrosis, Dr. Sharma and coauthors wrote.

A few prior studies have looked at the effects of statins in noncirrhotic CLD specifically, but most only included patients with viral hepatitis, and the identification of precirrhotic liver disease was largely based on fibrosis scores or ICD coding, leading to a risk for misclassification and heterogeneity in results, they wrote.

Using histopathology data in a nationwide Swedish cohort, Dr. Sharma and colleagues identified 3862 adults with noncirrhotic CLD who were statin users and a like number of propensity score–matched nonstatin users with noncirrhotic CLD. The adults with CLD included in the study were required to have a liver biopsy showing fibrosis or inflammation between the years 1969 and 2017 and at least one ICD code for CLD.

In both groups, 45% of patients had nonalcoholic fatty liver disease (NAFLD), 22% had alcohol-related liver disease (ALD), 18% had viral hepatitis, and 15% had autoimmune hepatitis (AIH).

The analysis found 234 (6.1%) statin users developed severe liver disease versus 276 (7.1%) nonusers, with incidence rates of 10.5 versus 18.1 per 1,000 person-years, respectively.

Statin use was associated with a statistically significant 40% lower rate of severe liver disease (hazard ratio, 0.60; 95% confidence interval, 0.48-0.74).

This was the case in ALD (HR, 0.30; 95% CI, 0.19-0.49) and NAFLD (HR, 0.68; 95% CI 0.45-1.00), but the results were not statistically significant for individuals with viral hepatitis (HR, 0.76; 95% CI, 0.51-1.14) or AIH (HR, 0.88; 0.48-1.58).

Statin use had a protective association in both prefibrosis and fibrosis stages at diagnosis, the researchers reported.

Statin use was also associated with lower rates of progression to cirrhosis (HR, 0.62; 95% CI, 0.49-0.78), HCC (HR, 0.44; 95% CI, 0.27-0.71) and liver-related death or liver transplant (HR, 0.55; 95% CI, 0.36-0.82).

The authors noted that their “study provides the most robust estimates available thus far.” However, they cautioned that “prospective randomized controlled trials are necessary in order to recommend statin use in clinical practice.”
 

‘Reassuring and pleasantly surprising’

The study is “very interesting, reassuring, and pleasantly surprising,” Scott L. Friedman, MD, chief of the division of liver diseases and dean for therapeutic discovery at the Icahn School of Medicine at Mount Sinai. New York, said in an interview.

“Statins have been around for a long time, and in earlier days, there was fear of using them because they might induce liver injury. But ample and consistent data exclude the possibility that they are more toxic in patients with liver disease,” said Dr. Friedman, who was not associated with this research.

“What’s interesting and new about this paper is that those studies that have looked at the effects of statins on liver disease have primarily focused on patients who have cirrhosis because there’s some scientific evidence [that] statins can lead to vasodilation and reduce the elevated liver blood flow that occurs in cirrhosis,” he explained.

“Instead, this study, which is quite sizable, includes patients who do not have evidence of cirrhosis based on biopsies. The results suggest that statins have a significant protective effect in these patients,” Dr. Friedman said.

The study was supported by the Karolinska Institute in Stockholm, the Columbia University Irving Medical Center, the Swedish Research Council, the Swedish Cancer Society, and the U.S. National Institutes of Health. Dr. Sharma is a consultant for Takeda and Volv. Other coauthors reported current or past relationships with Bristol-Myers Squibb, Gilead, Salix, and GlaxoSmithKline. Dr. Carey and Dr. Friedman reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Statins have disease-modifying potential in people with noncirrhotic chronic liver disease (CLD) by reducing the risk for progression to severe liver disease, new research shows.

The Swedish population-based study found that adults with noncirrhotic CLD who were on statin therapy had a statistically significant 40% lower risk of developing severe liver disease, compared with matched patients who were not on statin therapy.

©rogerashford/Thinkstock

The statin users were also less apt to progress to cirrhosis or hepatocellular carcinoma (HCC) and to die of liver disease, Rajani Sharma, MD, MSc, division of digestive and liver diseases, Columbia University Irving Medical Center, New York, and colleagues reported.

Their study was published online in Clinical Gastroenterology and Hepatology.
 

More than just cholesterol lowering

The study “continues the theme that cholesterol-lowering statins are good for a lot more things than just lowering cholesterol,” William Carey, MD, who wasn’t involved with the study, said in an interview.

The results are “very consistent with other trials that show that people with liver disease on statins do better in many respects than those who are not on statins,” said Dr. Carey, acting head of the hepatology section, department of gastroenterology, hepatology, and nutrition, Cleveland Clinic.

“The effects are not trivial,” Dr. Carey added. “It’s a very significant advantage in terms of fibrosis progression and survival.”

Statins have been shown to inhibit inflammatory pathways, promote endothelial cell function, and reduce hepatic stellate cell activity, suggesting that statins could lessen the progression of liver fibrosis, Dr. Sharma and coauthors wrote.

A few prior studies have looked at the effects of statins in noncirrhotic CLD specifically, but most only included patients with viral hepatitis, and the identification of precirrhotic liver disease was largely based on fibrosis scores or ICD coding, leading to a risk for misclassification and heterogeneity in results, they wrote.

Using histopathology data in a nationwide Swedish cohort, Dr. Sharma and colleagues identified 3862 adults with noncirrhotic CLD who were statin users and a like number of propensity score–matched nonstatin users with noncirrhotic CLD. The adults with CLD included in the study were required to have a liver biopsy showing fibrosis or inflammation between the years 1969 and 2017 and at least one ICD code for CLD.

In both groups, 45% of patients had nonalcoholic fatty liver disease (NAFLD), 22% had alcohol-related liver disease (ALD), 18% had viral hepatitis, and 15% had autoimmune hepatitis (AIH).

The analysis found 234 (6.1%) statin users developed severe liver disease versus 276 (7.1%) nonusers, with incidence rates of 10.5 versus 18.1 per 1,000 person-years, respectively.

Statin use was associated with a statistically significant 40% lower rate of severe liver disease (hazard ratio, 0.60; 95% confidence interval, 0.48-0.74).

This was the case in ALD (HR, 0.30; 95% CI, 0.19-0.49) and NAFLD (HR, 0.68; 95% CI 0.45-1.00), but the results were not statistically significant for individuals with viral hepatitis (HR, 0.76; 95% CI, 0.51-1.14) or AIH (HR, 0.88; 0.48-1.58).

Statin use had a protective association in both prefibrosis and fibrosis stages at diagnosis, the researchers reported.

Statin use was also associated with lower rates of progression to cirrhosis (HR, 0.62; 95% CI, 0.49-0.78), HCC (HR, 0.44; 95% CI, 0.27-0.71) and liver-related death or liver transplant (HR, 0.55; 95% CI, 0.36-0.82).

The authors noted that their “study provides the most robust estimates available thus far.” However, they cautioned that “prospective randomized controlled trials are necessary in order to recommend statin use in clinical practice.”
 

‘Reassuring and pleasantly surprising’

The study is “very interesting, reassuring, and pleasantly surprising,” Scott L. Friedman, MD, chief of the division of liver diseases and dean for therapeutic discovery at the Icahn School of Medicine at Mount Sinai. New York, said in an interview.

“Statins have been around for a long time, and in earlier days, there was fear of using them because they might induce liver injury. But ample and consistent data exclude the possibility that they are more toxic in patients with liver disease,” said Dr. Friedman, who was not associated with this research.

“What’s interesting and new about this paper is that those studies that have looked at the effects of statins on liver disease have primarily focused on patients who have cirrhosis because there’s some scientific evidence [that] statins can lead to vasodilation and reduce the elevated liver blood flow that occurs in cirrhosis,” he explained.

“Instead, this study, which is quite sizable, includes patients who do not have evidence of cirrhosis based on biopsies. The results suggest that statins have a significant protective effect in these patients,” Dr. Friedman said.

The study was supported by the Karolinska Institute in Stockholm, the Columbia University Irving Medical Center, the Swedish Research Council, the Swedish Cancer Society, and the U.S. National Institutes of Health. Dr. Sharma is a consultant for Takeda and Volv. Other coauthors reported current or past relationships with Bristol-Myers Squibb, Gilead, Salix, and GlaxoSmithKline. Dr. Carey and Dr. Friedman reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Statins have disease-modifying potential in people with noncirrhotic chronic liver disease (CLD) by reducing the risk for progression to severe liver disease, new research shows.

The Swedish population-based study found that adults with noncirrhotic CLD who were on statin therapy had a statistically significant 40% lower risk of developing severe liver disease, compared with matched patients who were not on statin therapy.

©rogerashford/Thinkstock

The statin users were also less apt to progress to cirrhosis or hepatocellular carcinoma (HCC) and to die of liver disease, Rajani Sharma, MD, MSc, division of digestive and liver diseases, Columbia University Irving Medical Center, New York, and colleagues reported.

Their study was published online in Clinical Gastroenterology and Hepatology.
 

More than just cholesterol lowering

The study “continues the theme that cholesterol-lowering statins are good for a lot more things than just lowering cholesterol,” William Carey, MD, who wasn’t involved with the study, said in an interview.

The results are “very consistent with other trials that show that people with liver disease on statins do better in many respects than those who are not on statins,” said Dr. Carey, acting head of the hepatology section, department of gastroenterology, hepatology, and nutrition, Cleveland Clinic.

“The effects are not trivial,” Dr. Carey added. “It’s a very significant advantage in terms of fibrosis progression and survival.”

Statins have been shown to inhibit inflammatory pathways, promote endothelial cell function, and reduce hepatic stellate cell activity, suggesting that statins could lessen the progression of liver fibrosis, Dr. Sharma and coauthors wrote.

A few prior studies have looked at the effects of statins in noncirrhotic CLD specifically, but most only included patients with viral hepatitis, and the identification of precirrhotic liver disease was largely based on fibrosis scores or ICD coding, leading to a risk for misclassification and heterogeneity in results, they wrote.

Using histopathology data in a nationwide Swedish cohort, Dr. Sharma and colleagues identified 3862 adults with noncirrhotic CLD who were statin users and a like number of propensity score–matched nonstatin users with noncirrhotic CLD. The adults with CLD included in the study were required to have a liver biopsy showing fibrosis or inflammation between the years 1969 and 2017 and at least one ICD code for CLD.

In both groups, 45% of patients had nonalcoholic fatty liver disease (NAFLD), 22% had alcohol-related liver disease (ALD), 18% had viral hepatitis, and 15% had autoimmune hepatitis (AIH).

The analysis found 234 (6.1%) statin users developed severe liver disease versus 276 (7.1%) nonusers, with incidence rates of 10.5 versus 18.1 per 1,000 person-years, respectively.

Statin use was associated with a statistically significant 40% lower rate of severe liver disease (hazard ratio, 0.60; 95% confidence interval, 0.48-0.74).

This was the case in ALD (HR, 0.30; 95% CI, 0.19-0.49) and NAFLD (HR, 0.68; 95% CI 0.45-1.00), but the results were not statistically significant for individuals with viral hepatitis (HR, 0.76; 95% CI, 0.51-1.14) or AIH (HR, 0.88; 0.48-1.58).

Statin use had a protective association in both prefibrosis and fibrosis stages at diagnosis, the researchers reported.

Statin use was also associated with lower rates of progression to cirrhosis (HR, 0.62; 95% CI, 0.49-0.78), HCC (HR, 0.44; 95% CI, 0.27-0.71) and liver-related death or liver transplant (HR, 0.55; 95% CI, 0.36-0.82).

The authors noted that their “study provides the most robust estimates available thus far.” However, they cautioned that “prospective randomized controlled trials are necessary in order to recommend statin use in clinical practice.”
 

‘Reassuring and pleasantly surprising’

The study is “very interesting, reassuring, and pleasantly surprising,” Scott L. Friedman, MD, chief of the division of liver diseases and dean for therapeutic discovery at the Icahn School of Medicine at Mount Sinai. New York, said in an interview.

“Statins have been around for a long time, and in earlier days, there was fear of using them because they might induce liver injury. But ample and consistent data exclude the possibility that they are more toxic in patients with liver disease,” said Dr. Friedman, who was not associated with this research.

“What’s interesting and new about this paper is that those studies that have looked at the effects of statins on liver disease have primarily focused on patients who have cirrhosis because there’s some scientific evidence [that] statins can lead to vasodilation and reduce the elevated liver blood flow that occurs in cirrhosis,” he explained.

“Instead, this study, which is quite sizable, includes patients who do not have evidence of cirrhosis based on biopsies. The results suggest that statins have a significant protective effect in these patients,” Dr. Friedman said.

The study was supported by the Karolinska Institute in Stockholm, the Columbia University Irving Medical Center, the Swedish Research Council, the Swedish Cancer Society, and the U.S. National Institutes of Health. Dr. Sharma is a consultant for Takeda and Volv. Other coauthors reported current or past relationships with Bristol-Myers Squibb, Gilead, Salix, and GlaxoSmithKline. Dr. Carey and Dr. Friedman reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

In postmenopausal women with hormone receptor–positive breast cancer, overweight and obesity were overall predictors of lower disease-free survival, but body mass index had no apparent association with the effect of extended endocrine therapy on disease-free survival, new data suggest.

Obesity is a well-known risk factor for breast cancer in postmenopausal women and has been associated with adverse prognosis, said Senna W.M. Lammers, MD, of Maastricht (the Netherlands) University during a presentation at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress. In addition, some studies suggest that patients with higher body mass index (BMI) experience reduced benefits from endocrine therapy, she said.

Dr. Lammers and colleagues conducted a study to determine the prognostic and predictive effect of BMI on disease-free survival in postmenopausal women with hormone receptor–positive (HR+) breast cancer who were treated with extended endocrine therapy.

The study population included participants in the randomized, phase III DATA trial, which evaluated the use of 6 years vs. 3 years of anastrozole in postmenopausal women with HR+ breast cancer who were disease-free after 2-3 years of adjuvant tamoxifen therapy.

Patients were categorized based on BMI as having normal weight (18.5-24.9 kg/m²), overweight (25-29.9 kg/m²), or obese (30 kg/m² or higher). The primary outcome was disease-free survival (DFS); the median follow-up period was 13.1 years.

DFS for patients with normal weight, overweight, and obesity was 66.2%, 59.5%, and 52.4%, with a P value of less than .001 for the trend, Dr. Lammers said. “These results were confirmed in multivariable analysis,” she said. Overall, patients with overweight and obesity had a worse DFS when compared with patients with normal weight (hazard ratio, 1.16; P = .10, for patients with overweight and HR, 1.26; P = .03 for patients with obesity).

“Next, we aimed to determine whether the prognostic effect of BMI differed by age,” Dr. Lammers said.

In women younger than 60 years, overweight and obesity were significantly associated with worse DFS (HR, 1.29; P = .05 and HR 1.83, P less than .001, respectively). However, this effect was not observed in women aged 60 years and older.

The researchers also examined the treatment effect of extended anastrozole on adapted DFS by weight, and found no significant differences among patients with normal weight, overweight, and obesity (HR, 1.00; HR, 0.74; and HR, 0.97, respectively), said Dr. Lammers.

In the question and answer session, Dr. Lammers was asked about possible explanations for the difference in DFS by age. Potential explanations include possible survival bias “as only the healthier [patients with obesity] survive to old age,” she said. Other potential explanations are biological, such as the potentially higher levels of bone density in older [patients with obesity], she said.

When asked about additional clinical implications, Dr. Lammers emphasized the importance of maintaining a healthy BMI for breast cancer patients of all ages. Other research areas might involve the use of lifestyle interventions, although these are challenging to implement, she noted.
 

Data draw attention to quality of life and lifestyle factors

The need to “look at drug development with new eyes” is particularly important when reviewing patient-reported outcomes, said Otto Metzger, MD, of the Dana Farber Cancer Institute, Boston, who served as the discussant for the session.

Dr. Metzger brought up the association between age and the effect of BMI on DFS, specifically.

Based on data from multiple studies and meta-analyses, “I do believe that obesity does play a role in prognosis,” he said, but the question is how long will researchers continue to simply record data without acting to add lifestyle interventions while also trying to develop new drugs, he said. Although convincing patients to make lifestyle changes remains a challenge, patients are often more motivated to make such changes after a cancer diagnosis, Dr. Metzger noted.

“I am a firm believer in the use of digital therapeutics in the context of clinical trials,” said Dr. Metzger. Digital technology offers great potential to educate patients on [adverse effects] and also to improve treatment adherence and quality of life, he concluded.

The study was supported by AstraZeneca, and Dr. Lammers disclosed financial relationships with AstraZeneca and Eli Lilly. Dr. Metzger disclosed receiving research funding to his institution from Pfizer, Genentech/Roche, and Sanofi, and serving as an adviser/consultant to AstraZeneca, Merck, Oncoclinicas, Resilience, and Roche.

In postmenopausal women with hormone receptor–positive breast cancer, overweight and obesity were overall predictors of lower disease-free survival, but body mass index had no apparent association with the effect of extended endocrine therapy on disease-free survival, new data suggest.

Obesity is a well-known risk factor for breast cancer in postmenopausal women and has been associated with adverse prognosis, said Senna W.M. Lammers, MD, of Maastricht (the Netherlands) University during a presentation at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress. In addition, some studies suggest that patients with higher body mass index (BMI) experience reduced benefits from endocrine therapy, she said.

Dr. Lammers and colleagues conducted a study to determine the prognostic and predictive effect of BMI on disease-free survival in postmenopausal women with hormone receptor–positive (HR+) breast cancer who were treated with extended endocrine therapy.

The study population included participants in the randomized, phase III DATA trial, which evaluated the use of 6 years vs. 3 years of anastrozole in postmenopausal women with HR+ breast cancer who were disease-free after 2-3 years of adjuvant tamoxifen therapy.

Patients were categorized based on BMI as having normal weight (18.5-24.9 kg/m²), overweight (25-29.9 kg/m²), or obese (30 kg/m² or higher). The primary outcome was disease-free survival (DFS); the median follow-up period was 13.1 years.

DFS for patients with normal weight, overweight, and obesity was 66.2%, 59.5%, and 52.4%, with a P value of less than .001 for the trend, Dr. Lammers said. “These results were confirmed in multivariable analysis,” she said. Overall, patients with overweight and obesity had a worse DFS when compared with patients with normal weight (hazard ratio, 1.16; P = .10, for patients with overweight and HR, 1.26; P = .03 for patients with obesity).

“Next, we aimed to determine whether the prognostic effect of BMI differed by age,” Dr. Lammers said.

In women younger than 60 years, overweight and obesity were significantly associated with worse DFS (HR, 1.29; P = .05 and HR 1.83, P less than .001, respectively). However, this effect was not observed in women aged 60 years and older.

The researchers also examined the treatment effect of extended anastrozole on adapted DFS by weight, and found no significant differences among patients with normal weight, overweight, and obesity (HR, 1.00; HR, 0.74; and HR, 0.97, respectively), said Dr. Lammers.

In the question and answer session, Dr. Lammers was asked about possible explanations for the difference in DFS by age. Potential explanations include possible survival bias “as only the healthier [patients with obesity] survive to old age,” she said. Other potential explanations are biological, such as the potentially higher levels of bone density in older [patients with obesity], she said.

When asked about additional clinical implications, Dr. Lammers emphasized the importance of maintaining a healthy BMI for breast cancer patients of all ages. Other research areas might involve the use of lifestyle interventions, although these are challenging to implement, she noted.
 

Data draw attention to quality of life and lifestyle factors

The need to “look at drug development with new eyes” is particularly important when reviewing patient-reported outcomes, said Otto Metzger, MD, of the Dana Farber Cancer Institute, Boston, who served as the discussant for the session.

Dr. Metzger brought up the association between age and the effect of BMI on DFS, specifically.

Based on data from multiple studies and meta-analyses, “I do believe that obesity does play a role in prognosis,” he said, but the question is how long will researchers continue to simply record data without acting to add lifestyle interventions while also trying to develop new drugs, he said. Although convincing patients to make lifestyle changes remains a challenge, patients are often more motivated to make such changes after a cancer diagnosis, Dr. Metzger noted.

“I am a firm believer in the use of digital therapeutics in the context of clinical trials,” said Dr. Metzger. Digital technology offers great potential to educate patients on [adverse effects] and also to improve treatment adherence and quality of life, he concluded.

The study was supported by AstraZeneca, and Dr. Lammers disclosed financial relationships with AstraZeneca and Eli Lilly. Dr. Metzger disclosed receiving research funding to his institution from Pfizer, Genentech/Roche, and Sanofi, and serving as an adviser/consultant to AstraZeneca, Merck, Oncoclinicas, Resilience, and Roche.

In postmenopausal women with hormone receptor–positive breast cancer, overweight and obesity were overall predictors of lower disease-free survival, but body mass index had no apparent association with the effect of extended endocrine therapy on disease-free survival, new data suggest.

Obesity is a well-known risk factor for breast cancer in postmenopausal women and has been associated with adverse prognosis, said Senna W.M. Lammers, MD, of Maastricht (the Netherlands) University during a presentation at the European Society for Medical Oncology (ESMO) Breast Cancer annual congress. In addition, some studies suggest that patients with higher body mass index (BMI) experience reduced benefits from endocrine therapy, she said.

Dr. Lammers and colleagues conducted a study to determine the prognostic and predictive effect of BMI on disease-free survival in postmenopausal women with hormone receptor–positive (HR+) breast cancer who were treated with extended endocrine therapy.

The study population included participants in the randomized, phase III DATA trial, which evaluated the use of 6 years vs. 3 years of anastrozole in postmenopausal women with HR+ breast cancer who were disease-free after 2-3 years of adjuvant tamoxifen therapy.

Patients were categorized based on BMI as having normal weight (18.5-24.9 kg/m²), overweight (25-29.9 kg/m²), or obese (30 kg/m² or higher). The primary outcome was disease-free survival (DFS); the median follow-up period was 13.1 years.

DFS for patients with normal weight, overweight, and obesity was 66.2%, 59.5%, and 52.4%, with a P value of less than .001 for the trend, Dr. Lammers said. “These results were confirmed in multivariable analysis,” she said. Overall, patients with overweight and obesity had a worse DFS when compared with patients with normal weight (hazard ratio, 1.16; P = .10, for patients with overweight and HR, 1.26; P = .03 for patients with obesity).

“Next, we aimed to determine whether the prognostic effect of BMI differed by age,” Dr. Lammers said.

In women younger than 60 years, overweight and obesity were significantly associated with worse DFS (HR, 1.29; P = .05 and HR 1.83, P less than .001, respectively). However, this effect was not observed in women aged 60 years and older.

The researchers also examined the treatment effect of extended anastrozole on adapted DFS by weight, and found no significant differences among patients with normal weight, overweight, and obesity (HR, 1.00; HR, 0.74; and HR, 0.97, respectively), said Dr. Lammers.

In the question and answer session, Dr. Lammers was asked about possible explanations for the difference in DFS by age. Potential explanations include possible survival bias “as only the healthier [patients with obesity] survive to old age,” she said. Other potential explanations are biological, such as the potentially higher levels of bone density in older [patients with obesity], she said.

When asked about additional clinical implications, Dr. Lammers emphasized the importance of maintaining a healthy BMI for breast cancer patients of all ages. Other research areas might involve the use of lifestyle interventions, although these are challenging to implement, she noted.
 

Data draw attention to quality of life and lifestyle factors

The need to “look at drug development with new eyes” is particularly important when reviewing patient-reported outcomes, said Otto Metzger, MD, of the Dana Farber Cancer Institute, Boston, who served as the discussant for the session.

Dr. Metzger brought up the association between age and the effect of BMI on DFS, specifically.

Based on data from multiple studies and meta-analyses, “I do believe that obesity does play a role in prognosis,” he said, but the question is how long will researchers continue to simply record data without acting to add lifestyle interventions while also trying to develop new drugs, he said. Although convincing patients to make lifestyle changes remains a challenge, patients are often more motivated to make such changes after a cancer diagnosis, Dr. Metzger noted.

“I am a firm believer in the use of digital therapeutics in the context of clinical trials,” said Dr. Metzger. Digital technology offers great potential to educate patients on [adverse effects] and also to improve treatment adherence and quality of life, he concluded.

The study was supported by AstraZeneca, and Dr. Lammers disclosed financial relationships with AstraZeneca and Eli Lilly. Dr. Metzger disclosed receiving research funding to his institution from Pfizer, Genentech/Roche, and Sanofi, and serving as an adviser/consultant to AstraZeneca, Merck, Oncoclinicas, Resilience, and Roche.

Adverse neonatal outcomes occurred in 24.9% of women treated for gestational diabetes at less than 20 weeks’ gestation compared to 30.5% of controls treated later or not at all, based on data from nearly 800 women.

Screening and treatment for gestational diabetes are currently recommended at 24-28 weeks’ gestation, with earlier testing recommended for women at increased risk, but the potential benefits of earlier intervention remain debatable, wrote David Simmons, MD, of Western Sydney University, Campbelltown, Australia, and colleagues.

“Until now, there has been complete equipoise over whether to treat hyperglycemia below that of overt diabetes early in pregnancy,” Dr. Simmons said in an interview. The conflicting questions: “Would early treatment reduce the excess deposition of fat on the baby with all of its sequelae; but would early treatment reduce fuel supply to some babies at a critical time and lead to SGA [small for gestational age]?” Dr. Simmons noted.

In a study published in the New England Journal of Medicine, Dr. Simmons and colleagues randomized 406 women aged 18 years and older with singleton pregnancies to immediate treatment for gestational diabetes. Another 396 women were randomized to a control group for deferred treatment or no treatment, based on results of an oral glucose tolerance test at 24-28 weeks’ gestation. All participants had at least one risk factor for hyperglycemia, and met the World Health Organization criteria for gestational diabetes. Women with preexisting diabetes or contraindicating comorbid medical conditions were excluded.

The study had three primary outcomes. The first was a composite of neonatal outcomes including birth before 37 weeks’ gestation, birth weight of 4,500 g or higher, birth trauma, neonatal respiratory distress, phototherapy, stillbirth or neonatal death, or shoulder dystocia.

The final sample included 748 women for adverse neonatal outcomes, 750 for pregnancy-related hypertension, and 492 for neonatal lean body mass. The mean age of the participants was 32 years; approximately one-third were white European and another third were South Asian. Overall baseline demographics were similar between the groups, and the initial oral glucose tolerance tests were performed at a mean of 15.6 weeks’ gestation.

Overall, 24.9% of women in the early treatment group experienced an adverse neonatal event vs. 30.5% of controls, for an adjusted risk difference of –5.6% and adjusted relative risk of 0.82.

Notably, in an exploratory subgroup analysis, respiratory distress occurred in 9.8% of infants born to women in the immediate treatment group vs. 17.0% of infants in the control group. “Neonatal respiratory distress was the main driver of the between-group difference observed for the first primary outcome,” the researchers wrote. A prespecified subgroup analysis suggested that the impact of an earlier intervention on adverse neonatal outcomes might be greater among women with a higher glycemic value and those whose oral glucose tolerance tests occurred at less than 14 weeks’ gestation, they noted. Stillbirths or neonatal deaths were similar and infrequent in both groups.

Pregnancy-related hypertension occurred in 10.6% of the immediate-treatment group and 9.9% of the controls group (adjusted risk difference, 0.7%). For the third outcome, the mean neonatal lean body mass was 2.86 g in the immediate-treatment group and 2.91 g for the controls (adjusted mean difference, −0.04 g).

No differences in serious adverse events related to either screening or treatment were noted between the groups.
 

Impact on neonatal outcomes merits further study

Dr. Simmons said that he was surprised by the study findings. “We thought if there was an effect, it would be small, but it isn’t,” he told this publication.

“If you combine the severe adverse outcomes, the perineal trauma and the reduction in days in NICU/special care unit, this is a significant impact on morbidity and likely on cost,” and researchers are currently examining data for cost-effectiveness, he said.

“We did not expect the likely large impact on reducing respiratory distress and perineal trauma,” he noted. “These findings have not been previously reported, perhaps because they were not looked for.” By contrast, “we thought here might be reductions in lower gestational age and cesarean delivery, but there was not,” he added.

The findings were limited by several factors including the nonstandardized approach to gestational diabetes treatment and the use of third-trimester treatment targets that had not been tested in earlier trimesters, the researchers noted. Other limitations included the focus on women already at high risk for hyperglycemia; therefore, the results might not generalize to women not at risk, they wrote.

The current study represents a beginning of answers, with data suggesting that early treatment for gestational diabetes reduces severe adverse pregnancy outcomes, days in NICU/special care unit, and perineal trauma, likely from the first trimester, said Dr. Simmons. However, the findings must be interpreted with caution, as criteria that are too low “might lead to more small babies,” he said. “We look forward to working with others to translate these findings into practice,” he added.

Much more research is needed to answer the many questions prompted by the current study, including who did and did not have complications, Dr. Simmons told this publication. Other studies are needed to collect data on cost-effectiveness, as well as consumer views, especially “different perspectives from different parts of the globe,” he said. Although there is not enough evidence yet to draw conclusions about the role of continuous glucose monitoring (CGM) in managing gestational diabetes, many studies are underway; “we look forward to the results,” of these studies, Dr. Simmons added.
 

Findings support early screening

Gestational diabetes is one of the most common medical complications of pregnancy, and accounts for more than 80% of diabetes-related diagnoses in pregnancy, said Emily Fay, MD, a maternal-fetal medicine specialist at the University of Washington, Seattle, in an interview.

“Previous studies have found that women with gestational diabetes are at higher risk in their pregnancy, including higher chance of developing preeclampsia, higher chance of cesarean delivery, and higher risks for their baby, including risk of shoulder dystocia, birth trauma, and jaundice, and higher birth weights,” she said. “Fortunately, studies have also shown that treatment of gestational diabetes helps lower these risks,” she noted. Currently, patients undergo routine screening for gestational diabetes between 24 and 28 weeks of pregnancy, but some who have risk factors for gestational diabetes may have screening in the early part of pregnancy, said Dr. Fay.

The current findings were not surprising overall, said Dr. Fay, who was not involved in the study. “The study authors looked at a variety of outcomes including neonatal adverse outcomes, neonatal body weight, and pregnancy-related hypertension,” she said.

The researchers found that patients treated early had a lower rate of adverse neonatal outcomes, which was to be expected, Dr. Fay said. “They did not find a difference in neonatal body weight; this also was not surprising, as the women who were not in the early treatment group still received treatment at the time of diagnosis later in pregnancy, which likely helped normalize the weights,” she explained.

“My takeaway from this study is that we should continue to screen patients with risk factors for gestational diabetes early in pregnancy and treat them at the time of diagnosis,” Dr. Fay told this publication. However, barriers that may exist to early treatment involve access to care, including being able to see a provider early in pregnancy, she said. “The treatment for gestational diabetes includes dietary education with diet changes and checking blood sugars frequently. Access to nutrition education can be limited and access to healthy foods can be expensive and difficult to obtain,” she noted. “Checking blood sugars throughout the day can also be difficult for those who are busy or working and who may not have the ability to take time to do this,” she said. However, “these barriers may be overcome by health care reform that improves patient access to and coverage of pregnancy care, improved access and affordability of healthy foods, and employer flexibility to allow the time and space to check blood sugars if needed,” she added.

Looking ahead, the use of continuous glucose monitors in pregnancy is an expanding area of research, said Dr. Fay. “Patients can quickly view their blood sugar without the use of finger sticks, which may help overcome some of the barriers patients may have with using finger sticks,” she noted. “Continuous glucose monitors have been used for those with type 1 and type 2 diabetes with success, and we need to better understand if these can also be helpful in gestational diabetes,” she said. Dr. Fay and colleagues at the University of Washington are currently conducting an ongoing study to explore the use of CGM in gestational diabetes.

The study was supported by the National Health and Medical Research Council, the Region Örebro Research Committee, the Medical Scientific Fund of the Mayor of Vienna, the South Western Sydney Local Health District Academic Unit, and a Western Sydney University Ainsworth Trust Grant. The researchers had no financial conflicts to disclose. Dr. Fay had no relevant financial conflicts to disclose.

Adverse neonatal outcomes occurred in 24.9% of women treated for gestational diabetes at less than 20 weeks’ gestation compared to 30.5% of controls treated later or not at all, based on data from nearly 800 women.

Screening and treatment for gestational diabetes are currently recommended at 24-28 weeks’ gestation, with earlier testing recommended for women at increased risk, but the potential benefits of earlier intervention remain debatable, wrote David Simmons, MD, of Western Sydney University, Campbelltown, Australia, and colleagues.

“Until now, there has been complete equipoise over whether to treat hyperglycemia below that of overt diabetes early in pregnancy,” Dr. Simmons said in an interview. The conflicting questions: “Would early treatment reduce the excess deposition of fat on the baby with all of its sequelae; but would early treatment reduce fuel supply to some babies at a critical time and lead to SGA [small for gestational age]?” Dr. Simmons noted.

In a study published in the New England Journal of Medicine, Dr. Simmons and colleagues randomized 406 women aged 18 years and older with singleton pregnancies to immediate treatment for gestational diabetes. Another 396 women were randomized to a control group for deferred treatment or no treatment, based on results of an oral glucose tolerance test at 24-28 weeks’ gestation. All participants had at least one risk factor for hyperglycemia, and met the World Health Organization criteria for gestational diabetes. Women with preexisting diabetes or contraindicating comorbid medical conditions were excluded.

The study had three primary outcomes. The first was a composite of neonatal outcomes including birth before 37 weeks’ gestation, birth weight of 4,500 g or higher, birth trauma, neonatal respiratory distress, phototherapy, stillbirth or neonatal death, or shoulder dystocia.

The final sample included 748 women for adverse neonatal outcomes, 750 for pregnancy-related hypertension, and 492 for neonatal lean body mass. The mean age of the participants was 32 years; approximately one-third were white European and another third were South Asian. Overall baseline demographics were similar between the groups, and the initial oral glucose tolerance tests were performed at a mean of 15.6 weeks’ gestation.

Overall, 24.9% of women in the early treatment group experienced an adverse neonatal event vs. 30.5% of controls, for an adjusted risk difference of –5.6% and adjusted relative risk of 0.82.

Notably, in an exploratory subgroup analysis, respiratory distress occurred in 9.8% of infants born to women in the immediate treatment group vs. 17.0% of infants in the control group. “Neonatal respiratory distress was the main driver of the between-group difference observed for the first primary outcome,” the researchers wrote. A prespecified subgroup analysis suggested that the impact of an earlier intervention on adverse neonatal outcomes might be greater among women with a higher glycemic value and those whose oral glucose tolerance tests occurred at less than 14 weeks’ gestation, they noted. Stillbirths or neonatal deaths were similar and infrequent in both groups.

Pregnancy-related hypertension occurred in 10.6% of the immediate-treatment group and 9.9% of the controls group (adjusted risk difference, 0.7%). For the third outcome, the mean neonatal lean body mass was 2.86 g in the immediate-treatment group and 2.91 g for the controls (adjusted mean difference, −0.04 g).

No differences in serious adverse events related to either screening or treatment were noted between the groups.
 

Impact on neonatal outcomes merits further study

Dr. Simmons said that he was surprised by the study findings. “We thought if there was an effect, it would be small, but it isn’t,” he told this publication.

“If you combine the severe adverse outcomes, the perineal trauma and the reduction in days in NICU/special care unit, this is a significant impact on morbidity and likely on cost,” and researchers are currently examining data for cost-effectiveness, he said.

“We did not expect the likely large impact on reducing respiratory distress and perineal trauma,” he noted. “These findings have not been previously reported, perhaps because they were not looked for.” By contrast, “we thought here might be reductions in lower gestational age and cesarean delivery, but there was not,” he added.

The findings were limited by several factors including the nonstandardized approach to gestational diabetes treatment and the use of third-trimester treatment targets that had not been tested in earlier trimesters, the researchers noted. Other limitations included the focus on women already at high risk for hyperglycemia; therefore, the results might not generalize to women not at risk, they wrote.

The current study represents a beginning of answers, with data suggesting that early treatment for gestational diabetes reduces severe adverse pregnancy outcomes, days in NICU/special care unit, and perineal trauma, likely from the first trimester, said Dr. Simmons. However, the findings must be interpreted with caution, as criteria that are too low “might lead to more small babies,” he said. “We look forward to working with others to translate these findings into practice,” he added.

Much more research is needed to answer the many questions prompted by the current study, including who did and did not have complications, Dr. Simmons told this publication. Other studies are needed to collect data on cost-effectiveness, as well as consumer views, especially “different perspectives from different parts of the globe,” he said. Although there is not enough evidence yet to draw conclusions about the role of continuous glucose monitoring (CGM) in managing gestational diabetes, many studies are underway; “we look forward to the results,” of these studies, Dr. Simmons added.
 

Findings support early screening

Gestational diabetes is one of the most common medical complications of pregnancy, and accounts for more than 80% of diabetes-related diagnoses in pregnancy, said Emily Fay, MD, a maternal-fetal medicine specialist at the University of Washington, Seattle, in an interview.

“Previous studies have found that women with gestational diabetes are at higher risk in their pregnancy, including higher chance of developing preeclampsia, higher chance of cesarean delivery, and higher risks for their baby, including risk of shoulder dystocia, birth trauma, and jaundice, and higher birth weights,” she said. “Fortunately, studies have also shown that treatment of gestational diabetes helps lower these risks,” she noted. Currently, patients undergo routine screening for gestational diabetes between 24 and 28 weeks of pregnancy, but some who have risk factors for gestational diabetes may have screening in the early part of pregnancy, said Dr. Fay.

The current findings were not surprising overall, said Dr. Fay, who was not involved in the study. “The study authors looked at a variety of outcomes including neonatal adverse outcomes, neonatal body weight, and pregnancy-related hypertension,” she said.

The researchers found that patients treated early had a lower rate of adverse neonatal outcomes, which was to be expected, Dr. Fay said. “They did not find a difference in neonatal body weight; this also was not surprising, as the women who were not in the early treatment group still received treatment at the time of diagnosis later in pregnancy, which likely helped normalize the weights,” she explained.

“My takeaway from this study is that we should continue to screen patients with risk factors for gestational diabetes early in pregnancy and treat them at the time of diagnosis,” Dr. Fay told this publication. However, barriers that may exist to early treatment involve access to care, including being able to see a provider early in pregnancy, she said. “The treatment for gestational diabetes includes dietary education with diet changes and checking blood sugars frequently. Access to nutrition education can be limited and access to healthy foods can be expensive and difficult to obtain,” she noted. “Checking blood sugars throughout the day can also be difficult for those who are busy or working and who may not have the ability to take time to do this,” she said. However, “these barriers may be overcome by health care reform that improves patient access to and coverage of pregnancy care, improved access and affordability of healthy foods, and employer flexibility to allow the time and space to check blood sugars if needed,” she added.

Looking ahead, the use of continuous glucose monitors in pregnancy is an expanding area of research, said Dr. Fay. “Patients can quickly view their blood sugar without the use of finger sticks, which may help overcome some of the barriers patients may have with using finger sticks,” she noted. “Continuous glucose monitors have been used for those with type 1 and type 2 diabetes with success, and we need to better understand if these can also be helpful in gestational diabetes,” she said. Dr. Fay and colleagues at the University of Washington are currently conducting an ongoing study to explore the use of CGM in gestational diabetes.

The study was supported by the National Health and Medical Research Council, the Region Örebro Research Committee, the Medical Scientific Fund of the Mayor of Vienna, the South Western Sydney Local Health District Academic Unit, and a Western Sydney University Ainsworth Trust Grant. The researchers had no financial conflicts to disclose. Dr. Fay had no relevant financial conflicts to disclose.

Adverse neonatal outcomes occurred in 24.9% of women treated for gestational diabetes at less than 20 weeks’ gestation compared to 30.5% of controls treated later or not at all, based on data from nearly 800 women.

Screening and treatment for gestational diabetes are currently recommended at 24-28 weeks’ gestation, with earlier testing recommended for women at increased risk, but the potential benefits of earlier intervention remain debatable, wrote David Simmons, MD, of Western Sydney University, Campbelltown, Australia, and colleagues.

“Until now, there has been complete equipoise over whether to treat hyperglycemia below that of overt diabetes early in pregnancy,” Dr. Simmons said in an interview. The conflicting questions: “Would early treatment reduce the excess deposition of fat on the baby with all of its sequelae; but would early treatment reduce fuel supply to some babies at a critical time and lead to SGA [small for gestational age]?” Dr. Simmons noted.

In a study published in the New England Journal of Medicine, Dr. Simmons and colleagues randomized 406 women aged 18 years and older with singleton pregnancies to immediate treatment for gestational diabetes. Another 396 women were randomized to a control group for deferred treatment or no treatment, based on results of an oral glucose tolerance test at 24-28 weeks’ gestation. All participants had at least one risk factor for hyperglycemia, and met the World Health Organization criteria for gestational diabetes. Women with preexisting diabetes or contraindicating comorbid medical conditions were excluded.

The study had three primary outcomes. The first was a composite of neonatal outcomes including birth before 37 weeks’ gestation, birth weight of 4,500 g or higher, birth trauma, neonatal respiratory distress, phototherapy, stillbirth or neonatal death, or shoulder dystocia.

The final sample included 748 women for adverse neonatal outcomes, 750 for pregnancy-related hypertension, and 492 for neonatal lean body mass. The mean age of the participants was 32 years; approximately one-third were white European and another third were South Asian. Overall baseline demographics were similar between the groups, and the initial oral glucose tolerance tests were performed at a mean of 15.6 weeks’ gestation.

Overall, 24.9% of women in the early treatment group experienced an adverse neonatal event vs. 30.5% of controls, for an adjusted risk difference of –5.6% and adjusted relative risk of 0.82.

Notably, in an exploratory subgroup analysis, respiratory distress occurred in 9.8% of infants born to women in the immediate treatment group vs. 17.0% of infants in the control group. “Neonatal respiratory distress was the main driver of the between-group difference observed for the first primary outcome,” the researchers wrote. A prespecified subgroup analysis suggested that the impact of an earlier intervention on adverse neonatal outcomes might be greater among women with a higher glycemic value and those whose oral glucose tolerance tests occurred at less than 14 weeks’ gestation, they noted. Stillbirths or neonatal deaths were similar and infrequent in both groups.

Pregnancy-related hypertension occurred in 10.6% of the immediate-treatment group and 9.9% of the controls group (adjusted risk difference, 0.7%). For the third outcome, the mean neonatal lean body mass was 2.86 g in the immediate-treatment group and 2.91 g for the controls (adjusted mean difference, −0.04 g).

No differences in serious adverse events related to either screening or treatment were noted between the groups.
 

Impact on neonatal outcomes merits further study

Dr. Simmons said that he was surprised by the study findings. “We thought if there was an effect, it would be small, but it isn’t,” he told this publication.

“If you combine the severe adverse outcomes, the perineal trauma and the reduction in days in NICU/special care unit, this is a significant impact on morbidity and likely on cost,” and researchers are currently examining data for cost-effectiveness, he said.

“We did not expect the likely large impact on reducing respiratory distress and perineal trauma,” he noted. “These findings have not been previously reported, perhaps because they were not looked for.” By contrast, “we thought here might be reductions in lower gestational age and cesarean delivery, but there was not,” he added.

The findings were limited by several factors including the nonstandardized approach to gestational diabetes treatment and the use of third-trimester treatment targets that had not been tested in earlier trimesters, the researchers noted. Other limitations included the focus on women already at high risk for hyperglycemia; therefore, the results might not generalize to women not at risk, they wrote.

The current study represents a beginning of answers, with data suggesting that early treatment for gestational diabetes reduces severe adverse pregnancy outcomes, days in NICU/special care unit, and perineal trauma, likely from the first trimester, said Dr. Simmons. However, the findings must be interpreted with caution, as criteria that are too low “might lead to more small babies,” he said. “We look forward to working with others to translate these findings into practice,” he added.

Much more research is needed to answer the many questions prompted by the current study, including who did and did not have complications, Dr. Simmons told this publication. Other studies are needed to collect data on cost-effectiveness, as well as consumer views, especially “different perspectives from different parts of the globe,” he said. Although there is not enough evidence yet to draw conclusions about the role of continuous glucose monitoring (CGM) in managing gestational diabetes, many studies are underway; “we look forward to the results,” of these studies, Dr. Simmons added.
 

Findings support early screening

Gestational diabetes is one of the most common medical complications of pregnancy, and accounts for more than 80% of diabetes-related diagnoses in pregnancy, said Emily Fay, MD, a maternal-fetal medicine specialist at the University of Washington, Seattle, in an interview.

“Previous studies have found that women with gestational diabetes are at higher risk in their pregnancy, including higher chance of developing preeclampsia, higher chance of cesarean delivery, and higher risks for their baby, including risk of shoulder dystocia, birth trauma, and jaundice, and higher birth weights,” she said. “Fortunately, studies have also shown that treatment of gestational diabetes helps lower these risks,” she noted. Currently, patients undergo routine screening for gestational diabetes between 24 and 28 weeks of pregnancy, but some who have risk factors for gestational diabetes may have screening in the early part of pregnancy, said Dr. Fay.

The current findings were not surprising overall, said Dr. Fay, who was not involved in the study. “The study authors looked at a variety of outcomes including neonatal adverse outcomes, neonatal body weight, and pregnancy-related hypertension,” she said.

The researchers found that patients treated early had a lower rate of adverse neonatal outcomes, which was to be expected, Dr. Fay said. “They did not find a difference in neonatal body weight; this also was not surprising, as the women who were not in the early treatment group still received treatment at the time of diagnosis later in pregnancy, which likely helped normalize the weights,” she explained.

“My takeaway from this study is that we should continue to screen patients with risk factors for gestational diabetes early in pregnancy and treat them at the time of diagnosis,” Dr. Fay told this publication. However, barriers that may exist to early treatment involve access to care, including being able to see a provider early in pregnancy, she said. “The treatment for gestational diabetes includes dietary education with diet changes and checking blood sugars frequently. Access to nutrition education can be limited and access to healthy foods can be expensive and difficult to obtain,” she noted. “Checking blood sugars throughout the day can also be difficult for those who are busy or working and who may not have the ability to take time to do this,” she said. However, “these barriers may be overcome by health care reform that improves patient access to and coverage of pregnancy care, improved access and affordability of healthy foods, and employer flexibility to allow the time and space to check blood sugars if needed,” she added.

Looking ahead, the use of continuous glucose monitors in pregnancy is an expanding area of research, said Dr. Fay. “Patients can quickly view their blood sugar without the use of finger sticks, which may help overcome some of the barriers patients may have with using finger sticks,” she noted. “Continuous glucose monitors have been used for those with type 1 and type 2 diabetes with success, and we need to better understand if these can also be helpful in gestational diabetes,” she said. Dr. Fay and colleagues at the University of Washington are currently conducting an ongoing study to explore the use of CGM in gestational diabetes.

The study was supported by the National Health and Medical Research Council, the Region Örebro Research Committee, the Medical Scientific Fund of the Mayor of Vienna, the South Western Sydney Local Health District Academic Unit, and a Western Sydney University Ainsworth Trust Grant. The researchers had no financial conflicts to disclose. Dr. Fay had no relevant financial conflicts to disclose.

Overweight boy, infertile man?

When it comes to causes of infertility, history and science have generally focused on women. A lot of the research overlooks men, but some previous studies have suggested that male infertility contributes to about half of the cases of couple infertility. The reason for much of that male infertility, however, has been a mystery. Until now.

A group of Italian investigators looked at the declining trend in sperm counts over the past 40 years and the increase of childhood obesity. Is there a correlation? The researchers think so. Childhood obesity can be linked to multiple causes, but the researchers zeroed in on the effect that obesity has on metabolic rates and, therefore, testicular growth.

Collecting data on testicular volume, body mass index (BMI), and insulin resistance from 268 boys aged 2-18 years, the researchers discovered that those with normal weight and normal insulin levels had testicular volumes 1.5 times higher than their overweight counterparts and 1.5-2 times higher than those with hyperinsulinemia, building a case for obesity being a factor for infertility later in life.

Since low testicular volume is associated with lower sperm count and production as an adult, putting two and two together makes a compelling argument for childhood obesity being a major male infertility culprit. It also creates even more urgency for the health care industry and community decision makers to focus on childhood obesity.

It sure would be nice to be able to take one of the many risk factors for future human survival off the table. Maybe by taking something, like cake, off the table.

Fecal transplantation moves to the kitchen

Fecal microbiota transplantation is an effective way to treat Clostridioides difficile infection, but, in the end, it’s still a transplantation procedure involving a nasogastric or colorectal tube or rather large oral capsules with a demanding (30-40 capsules over 2 days) dosage. Please, Science, tell us there’s a better way.

CC BY-NC-ND 4.0, Adèle Rakotonirina et Nathalie Boulens

Science, in the form of investigators at the University of Geneva and Lausanne University Hospital in Switzerland, has spoken, and there may be a better way. Presenting fecal beads: All the bacterial goodness of donor stool without the tubal insertions or massive quantities of giant capsules.

We know you’re scoffing out there, but it’s true. All you need is a little alginate, which is a “biocompatible polysaccharide isolated from brown algae” of the Phaeophyceae family. The donor feces is microencapsulated by mixing it with the alginate, dropping that mixture into water containing calcium chloride, turning it into a gel, and then freeze-drying the gel into small (just 2 mm), solid beads.

Sounds plausible enough, but what do you do with them? “These brownish beads can be easily dispersed in a liquid or food that is pleasant to eat. They also have no taste,” senior author Eric Allémann, PhD, said in a statement released by the University of Geneva.

Pleasant to eat? No taste? So which is it? If you really want to know, watch fecal beads week on the new season of “The Great British Baking Show,” when Paul and Prue judge poop baked into crumpets, crepes, and crostatas. Yum.
 

We’re on the low-oxygen diet

Nine out of ten doctors agree: Oxygen is more important to your continued well-being than food. After all, a human can go weeks without food, but just minutes without oxygen. However, ten out of ten doctors agree that the United States has an obesity problem. They all also agree that previous research has shown soldiers who train at high altitudes lose more weight than those training at lower altitudes.

PBRC

So, on the one hand, we have a country full of overweight people, and on the other, we have low oxygen levels causing weight loss. The solution, then, is obvious: Stop breathing.

More specifically (and somewhat less facetiously), researchers from Louisiana have launched the Low Oxygen and Weight Status trial and are currently recruiting individuals with BMIs of 30-40 to, uh, suffocate themselves. No, no, it’s okay, it’s just when they’re sleeping.

Fine, straight face. Participants in the LOWS trial will undergo an 8-week period when they will consume a controlled weight-loss diet and spend their nights in a hypoxic sealed tent, where they will sleep in an environment with an oxygen level equivalent to 8,500 feet above sea level (roughly equivalent to Aspen, Colo.). They will be compared with people on the same diet who sleep in a normal, sea-level oxygen environment.

The study’s goal is to determine whether or not spending time in a low-oxygen environment will suppress appetite, increase energy expenditure, and improve weight loss and insulin sensitivity. Excessive weight loss in high-altitude environments isn’t a good thing for soldiers – they kind of need their muscles and body weight to do the whole soldiering thing – but it could be great for people struggling to lose those last few pounds. And it also may prove LOTME’s previous thesis: Air is not good.

Overweight boy, infertile man?

When it comes to causes of infertility, history and science have generally focused on women. A lot of the research overlooks men, but some previous studies have suggested that male infertility contributes to about half of the cases of couple infertility. The reason for much of that male infertility, however, has been a mystery. Until now.

A group of Italian investigators looked at the declining trend in sperm counts over the past 40 years and the increase of childhood obesity. Is there a correlation? The researchers think so. Childhood obesity can be linked to multiple causes, but the researchers zeroed in on the effect that obesity has on metabolic rates and, therefore, testicular growth.

Collecting data on testicular volume, body mass index (BMI), and insulin resistance from 268 boys aged 2-18 years, the researchers discovered that those with normal weight and normal insulin levels had testicular volumes 1.5 times higher than their overweight counterparts and 1.5-2 times higher than those with hyperinsulinemia, building a case for obesity being a factor for infertility later in life.

Since low testicular volume is associated with lower sperm count and production as an adult, putting two and two together makes a compelling argument for childhood obesity being a major male infertility culprit. It also creates even more urgency for the health care industry and community decision makers to focus on childhood obesity.

It sure would be nice to be able to take one of the many risk factors for future human survival off the table. Maybe by taking something, like cake, off the table.

Fecal transplantation moves to the kitchen

Fecal microbiota transplantation is an effective way to treat Clostridioides difficile infection, but, in the end, it’s still a transplantation procedure involving a nasogastric or colorectal tube or rather large oral capsules with a demanding (30-40 capsules over 2 days) dosage. Please, Science, tell us there’s a better way.

CC BY-NC-ND 4.0, Adèle Rakotonirina et Nathalie Boulens

Science, in the form of investigators at the University of Geneva and Lausanne University Hospital in Switzerland, has spoken, and there may be a better way. Presenting fecal beads: All the bacterial goodness of donor stool without the tubal insertions or massive quantities of giant capsules.

We know you’re scoffing out there, but it’s true. All you need is a little alginate, which is a “biocompatible polysaccharide isolated from brown algae” of the Phaeophyceae family. The donor feces is microencapsulated by mixing it with the alginate, dropping that mixture into water containing calcium chloride, turning it into a gel, and then freeze-drying the gel into small (just 2 mm), solid beads.

Sounds plausible enough, but what do you do with them? “These brownish beads can be easily dispersed in a liquid or food that is pleasant to eat. They also have no taste,” senior author Eric Allémann, PhD, said in a statement released by the University of Geneva.

Pleasant to eat? No taste? So which is it? If you really want to know, watch fecal beads week on the new season of “The Great British Baking Show,” when Paul and Prue judge poop baked into crumpets, crepes, and crostatas. Yum.
 

We’re on the low-oxygen diet

Nine out of ten doctors agree: Oxygen is more important to your continued well-being than food. After all, a human can go weeks without food, but just minutes without oxygen. However, ten out of ten doctors agree that the United States has an obesity problem. They all also agree that previous research has shown soldiers who train at high altitudes lose more weight than those training at lower altitudes.

PBRC

So, on the one hand, we have a country full of overweight people, and on the other, we have low oxygen levels causing weight loss. The solution, then, is obvious: Stop breathing.

More specifically (and somewhat less facetiously), researchers from Louisiana have launched the Low Oxygen and Weight Status trial and are currently recruiting individuals with BMIs of 30-40 to, uh, suffocate themselves. No, no, it’s okay, it’s just when they’re sleeping.

Fine, straight face. Participants in the LOWS trial will undergo an 8-week period when they will consume a controlled weight-loss diet and spend their nights in a hypoxic sealed tent, where they will sleep in an environment with an oxygen level equivalent to 8,500 feet above sea level (roughly equivalent to Aspen, Colo.). They will be compared with people on the same diet who sleep in a normal, sea-level oxygen environment.

The study’s goal is to determine whether or not spending time in a low-oxygen environment will suppress appetite, increase energy expenditure, and improve weight loss and insulin sensitivity. Excessive weight loss in high-altitude environments isn’t a good thing for soldiers – they kind of need their muscles and body weight to do the whole soldiering thing – but it could be great for people struggling to lose those last few pounds. And it also may prove LOTME’s previous thesis: Air is not good.

Overweight boy, infertile man?

When it comes to causes of infertility, history and science have generally focused on women. A lot of the research overlooks men, but some previous studies have suggested that male infertility contributes to about half of the cases of couple infertility. The reason for much of that male infertility, however, has been a mystery. Until now.

A group of Italian investigators looked at the declining trend in sperm counts over the past 40 years and the increase of childhood obesity. Is there a correlation? The researchers think so. Childhood obesity can be linked to multiple causes, but the researchers zeroed in on the effect that obesity has on metabolic rates and, therefore, testicular growth.

Collecting data on testicular volume, body mass index (BMI), and insulin resistance from 268 boys aged 2-18 years, the researchers discovered that those with normal weight and normal insulin levels had testicular volumes 1.5 times higher than their overweight counterparts and 1.5-2 times higher than those with hyperinsulinemia, building a case for obesity being a factor for infertility later in life.

Since low testicular volume is associated with lower sperm count and production as an adult, putting two and two together makes a compelling argument for childhood obesity being a major male infertility culprit. It also creates even more urgency for the health care industry and community decision makers to focus on childhood obesity.

It sure would be nice to be able to take one of the many risk factors for future human survival off the table. Maybe by taking something, like cake, off the table.

Fecal transplantation moves to the kitchen

Fecal microbiota transplantation is an effective way to treat Clostridioides difficile infection, but, in the end, it’s still a transplantation procedure involving a nasogastric or colorectal tube or rather large oral capsules with a demanding (30-40 capsules over 2 days) dosage. Please, Science, tell us there’s a better way.

CC BY-NC-ND 4.0, Adèle Rakotonirina et Nathalie Boulens

Science, in the form of investigators at the University of Geneva and Lausanne University Hospital in Switzerland, has spoken, and there may be a better way. Presenting fecal beads: All the bacterial goodness of donor stool without the tubal insertions or massive quantities of giant capsules.

We know you’re scoffing out there, but it’s true. All you need is a little alginate, which is a “biocompatible polysaccharide isolated from brown algae” of the Phaeophyceae family. The donor feces is microencapsulated by mixing it with the alginate, dropping that mixture into water containing calcium chloride, turning it into a gel, and then freeze-drying the gel into small (just 2 mm), solid beads.

Sounds plausible enough, but what do you do with them? “These brownish beads can be easily dispersed in a liquid or food that is pleasant to eat. They also have no taste,” senior author Eric Allémann, PhD, said in a statement released by the University of Geneva.

Pleasant to eat? No taste? So which is it? If you really want to know, watch fecal beads week on the new season of “The Great British Baking Show,” when Paul and Prue judge poop baked into crumpets, crepes, and crostatas. Yum.
 

We’re on the low-oxygen diet

Nine out of ten doctors agree: Oxygen is more important to your continued well-being than food. After all, a human can go weeks without food, but just minutes without oxygen. However, ten out of ten doctors agree that the United States has an obesity problem. They all also agree that previous research has shown soldiers who train at high altitudes lose more weight than those training at lower altitudes.

PBRC

So, on the one hand, we have a country full of overweight people, and on the other, we have low oxygen levels causing weight loss. The solution, then, is obvious: Stop breathing.

More specifically (and somewhat less facetiously), researchers from Louisiana have launched the Low Oxygen and Weight Status trial and are currently recruiting individuals with BMIs of 30-40 to, uh, suffocate themselves. No, no, it’s okay, it’s just when they’re sleeping.

Fine, straight face. Participants in the LOWS trial will undergo an 8-week period when they will consume a controlled weight-loss diet and spend their nights in a hypoxic sealed tent, where they will sleep in an environment with an oxygen level equivalent to 8,500 feet above sea level (roughly equivalent to Aspen, Colo.). They will be compared with people on the same diet who sleep in a normal, sea-level oxygen environment.

The study’s goal is to determine whether or not spending time in a low-oxygen environment will suppress appetite, increase energy expenditure, and improve weight loss and insulin sensitivity. Excessive weight loss in high-altitude environments isn’t a good thing for soldiers – they kind of need their muscles and body weight to do the whole soldiering thing – but it could be great for people struggling to lose those last few pounds. And it also may prove LOTME’s previous thesis: Air is not good.

SEATTLE – Use of a new kind of assay – sequential beta-hydroxybutyrate testing – with a cut-off for ruling out insulinoma in patients with hypoglycemia may allow for a shortening of the standard 72-hour fasting time, therefore yielding significant hospital cost savings, new data suggest.

Insulinomas are small, rare types of pancreatic tumors that are benign but secrete excess insulin, leading to hypoglycemia. More than 99% of people with insulinomas develop hypoglycemia within 72 hours, hence, the use of a 72-hour fast to detect these tumors.

But most people who are evaluated for hypoglycemia do not have an insulinoma and fasting in hospital for 3 days is burdensome and costly.  

As part of a quality improvement project, Cleveland Clinic endocrinology fellow Michelle D. Lundholm, MD, and colleagues modified their hospital’s protocol to include measurement of beta-hydroxybutyrate (BHB), a marker of insulin suppression, every 12 hours with a cutoff of ≥ 2.7mmol/L for stopping the fast if hypoglycemia (venous glucose ≤ 45mg/dL) hasn’t occurred. This intervention cut in half the number of patients who needed to fast for the full 72 hours, without missing any insulinomas.

“We are excited to share how a relatively simple adjustment to our protocol allowed us to successfully reduce the burden of fasting on patients and more effectively utilize hospital resources. We hope that this encourages other centers to consider doing the same,” Dr. Lundholm said in an interview.

“These data support a 48-hour fast. The literature supports that’s sufficient to detect 95% of insulinomas. ... But, given our small insulinoma cohort, we are looking forward to learning from other studies,” she added.

Dr. Lundholm presented the late-breaking oral abstract at the annual scientific & clinical congress of the American Association of Clinical Endocrinology.

Asked to comment, session moderator Jenna Sarvaideo, MD, said: “We’re often steeped in tradition. That’s why this abstract and this quality improvement project is so exciting to me because it challenges the history. … and I think it’s ultimately helping patients.”

Dr. Sarvaideo, of Clement J. Zablocki VA Medical Center, Milwaukee, noted that, typically, although the fast will be stopped before 72 hours if the patient develops hypoglycemia, “often they don’t, so we keep going on and on. If we just paid more attention to the beta-hydroxybutyrate, I think that would be practice changing.”

She added that more data would be optimal, given that there were under 100 patients in the study, “but I do think that devising protocols is … very much still at the hands of the endocrinologists. I think that this work could make groups reevaluate their protocol and change it, maybe even with a small dataset and then move on from there and see what they see.”

Indeed, Dr. Lundholm pointed out that some institutions, such as the Mayo Clinic, already include 6-hour BHB measurements (along with glucose and insulin) in their protocols.

“For any institution that already draws regular BHB levels like this, it would be very easy to implement a new stopping criterion without adding any additional costs,” she said in an interview.
 

All insulinomas became apparent in less than 48 hours

The first report to look at the value of testing BHB at regular intervals was published by the Mayo Clinic in 2005 after they noticed patients without insulinoma were complaining of ketosis symptoms such as foul breath and digestive problems toward the end of the fast.

However, although BHB testing is used today as part of the evaluation, it’s typically only drawn at the start of the protocol and again at the time of hypoglycemia or at the end of 72 hours because more frequent values hadn’t been thought to be useful for guiding clinical management, Dr. Lundholm explained. 

Between January 2018 and June 2020, Dr. Lundholm and colleagues followed 34 Cleveland Clinic patients who completed the usual 72-hour fast protocol. Overall, 71% were female, and 26% had undergone prior bariatric surgery procedures. Eleven (32%) developed hypoglycemia and stopped fasting. The other 23 (68%) fasted for the full 72 hours.

Dr. Lundholm and colleagues determined that the fast could have ended earlier in 35% of patients based on an elevated BHB without missing any insulinomas.

And so, in June 2020 the group revised their protocol to include the BHB ≥ 2.7mmol/L stopping criterion. Of the 30 patients evaluated from June 2020 to January 2023, 87% were female and 17% had undergone a bariatric procedure.

Here, 15 (50%) reached a BHB ≥ 2.7mmol/L and ended their fast at an average of 43.8 hours. Another seven (23%) ended the fast after developing hypoglycemia. Just eight patients (27%) fasted for the full 72 hours.

Overall, this resulted in approximately 376 fewer cumulative hours of inpatient admission than if patients had fasted for the full time.

Of the 64 patients who have completed the fasting protocol since 2018, seven (11%) who did have an insulinoma developed hypoglycemia within 48 hours and with a BHB < 2.7 mmol/L (median, 0.15).
 

Advantages: cost, adherence

A day in a general medicine bed at Cleveland Clinic was quoted as costing $2,420, based on publicly available information as of Jan. 1, 2023. “If half of patients leave 1 day earlier, this equates to about $1,210 per patient in savings from bed costs alone,” Dr. Lundholm told this news organization.  

The revised protocol required an additional two to four blood draws, depending on the length of the fast. “The cost of these extra blood tests varies by lab and by count, but even at its highest does not exceed the amount of savings from bed costs,” she noted.

Patient adherence is another potential benefit of the revised protocol.

“Any study that requires 72 hours of patient cooperation is a challenge, particularly in an uncomfortable position like fasting. When we looked at these adherence numbers, we found that the percentage of patients who prematurely ended their fast decreased from 35% to 17% with the updated protocol,” Dr. Lundholm continued.

“This translates to fewer inconclusive results and fewer readmissions for repeat 72-hour fasting. While this was not our primary outcome, it was another noted benefit of our change,” she said.

Dr. Lundholm and Dr. Sarvaideo have reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

SEATTLE – Use of a new kind of assay – sequential beta-hydroxybutyrate testing – with a cut-off for ruling out insulinoma in patients with hypoglycemia may allow for a shortening of the standard 72-hour fasting time, therefore yielding significant hospital cost savings, new data suggest.

Insulinomas are small, rare types of pancreatic tumors that are benign but secrete excess insulin, leading to hypoglycemia. More than 99% of people with insulinomas develop hypoglycemia within 72 hours, hence, the use of a 72-hour fast to detect these tumors.

But most people who are evaluated for hypoglycemia do not have an insulinoma and fasting in hospital for 3 days is burdensome and costly.  

As part of a quality improvement project, Cleveland Clinic endocrinology fellow Michelle D. Lundholm, MD, and colleagues modified their hospital’s protocol to include measurement of beta-hydroxybutyrate (BHB), a marker of insulin suppression, every 12 hours with a cutoff of ≥ 2.7mmol/L for stopping the fast if hypoglycemia (venous glucose ≤ 45mg/dL) hasn’t occurred. This intervention cut in half the number of patients who needed to fast for the full 72 hours, without missing any insulinomas.

“We are excited to share how a relatively simple adjustment to our protocol allowed us to successfully reduce the burden of fasting on patients and more effectively utilize hospital resources. We hope that this encourages other centers to consider doing the same,” Dr. Lundholm said in an interview.

“These data support a 48-hour fast. The literature supports that’s sufficient to detect 95% of insulinomas. ... But, given our small insulinoma cohort, we are looking forward to learning from other studies,” she added.

Dr. Lundholm presented the late-breaking oral abstract at the annual scientific & clinical congress of the American Association of Clinical Endocrinology.

Asked to comment, session moderator Jenna Sarvaideo, MD, said: “We’re often steeped in tradition. That’s why this abstract and this quality improvement project is so exciting to me because it challenges the history. … and I think it’s ultimately helping patients.”

Dr. Sarvaideo, of Clement J. Zablocki VA Medical Center, Milwaukee, noted that, typically, although the fast will be stopped before 72 hours if the patient develops hypoglycemia, “often they don’t, so we keep going on and on. If we just paid more attention to the beta-hydroxybutyrate, I think that would be practice changing.”

She added that more data would be optimal, given that there were under 100 patients in the study, “but I do think that devising protocols is … very much still at the hands of the endocrinologists. I think that this work could make groups reevaluate their protocol and change it, maybe even with a small dataset and then move on from there and see what they see.”

Indeed, Dr. Lundholm pointed out that some institutions, such as the Mayo Clinic, already include 6-hour BHB measurements (along with glucose and insulin) in their protocols.

“For any institution that already draws regular BHB levels like this, it would be very easy to implement a new stopping criterion without adding any additional costs,” she said in an interview.
 

All insulinomas became apparent in less than 48 hours

The first report to look at the value of testing BHB at regular intervals was published by the Mayo Clinic in 2005 after they noticed patients without insulinoma were complaining of ketosis symptoms such as foul breath and digestive problems toward the end of the fast.

However, although BHB testing is used today as part of the evaluation, it’s typically only drawn at the start of the protocol and again at the time of hypoglycemia or at the end of 72 hours because more frequent values hadn’t been thought to be useful for guiding clinical management, Dr. Lundholm explained. 

Between January 2018 and June 2020, Dr. Lundholm and colleagues followed 34 Cleveland Clinic patients who completed the usual 72-hour fast protocol. Overall, 71% were female, and 26% had undergone prior bariatric surgery procedures. Eleven (32%) developed hypoglycemia and stopped fasting. The other 23 (68%) fasted for the full 72 hours.

Dr. Lundholm and colleagues determined that the fast could have ended earlier in 35% of patients based on an elevated BHB without missing any insulinomas.

And so, in June 2020 the group revised their protocol to include the BHB ≥ 2.7mmol/L stopping criterion. Of the 30 patients evaluated from June 2020 to January 2023, 87% were female and 17% had undergone a bariatric procedure.

Here, 15 (50%) reached a BHB ≥ 2.7mmol/L and ended their fast at an average of 43.8 hours. Another seven (23%) ended the fast after developing hypoglycemia. Just eight patients (27%) fasted for the full 72 hours.

Overall, this resulted in approximately 376 fewer cumulative hours of inpatient admission than if patients had fasted for the full time.

Of the 64 patients who have completed the fasting protocol since 2018, seven (11%) who did have an insulinoma developed hypoglycemia within 48 hours and with a BHB < 2.7 mmol/L (median, 0.15).
 

Advantages: cost, adherence

A day in a general medicine bed at Cleveland Clinic was quoted as costing $2,420, based on publicly available information as of Jan. 1, 2023. “If half of patients leave 1 day earlier, this equates to about $1,210 per patient in savings from bed costs alone,” Dr. Lundholm told this news organization.  

The revised protocol required an additional two to four blood draws, depending on the length of the fast. “The cost of these extra blood tests varies by lab and by count, but even at its highest does not exceed the amount of savings from bed costs,” she noted.

Patient adherence is another potential benefit of the revised protocol.

“Any study that requires 72 hours of patient cooperation is a challenge, particularly in an uncomfortable position like fasting. When we looked at these adherence numbers, we found that the percentage of patients who prematurely ended their fast decreased from 35% to 17% with the updated protocol,” Dr. Lundholm continued.

“This translates to fewer inconclusive results and fewer readmissions for repeat 72-hour fasting. While this was not our primary outcome, it was another noted benefit of our change,” she said.

Dr. Lundholm and Dr. Sarvaideo have reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

SEATTLE – Use of a new kind of assay – sequential beta-hydroxybutyrate testing – with a cut-off for ruling out insulinoma in patients with hypoglycemia may allow for a shortening of the standard 72-hour fasting time, therefore yielding significant hospital cost savings, new data suggest.

Insulinomas are small, rare types of pancreatic tumors that are benign but secrete excess insulin, leading to hypoglycemia. More than 99% of people with insulinomas develop hypoglycemia within 72 hours, hence, the use of a 72-hour fast to detect these tumors.

But most people who are evaluated for hypoglycemia do not have an insulinoma and fasting in hospital for 3 days is burdensome and costly.  

As part of a quality improvement project, Cleveland Clinic endocrinology fellow Michelle D. Lundholm, MD, and colleagues modified their hospital’s protocol to include measurement of beta-hydroxybutyrate (BHB), a marker of insulin suppression, every 12 hours with a cutoff of ≥ 2.7mmol/L for stopping the fast if hypoglycemia (venous glucose ≤ 45mg/dL) hasn’t occurred. This intervention cut in half the number of patients who needed to fast for the full 72 hours, without missing any insulinomas.

“We are excited to share how a relatively simple adjustment to our protocol allowed us to successfully reduce the burden of fasting on patients and more effectively utilize hospital resources. We hope that this encourages other centers to consider doing the same,” Dr. Lundholm said in an interview.

“These data support a 48-hour fast. The literature supports that’s sufficient to detect 95% of insulinomas. ... But, given our small insulinoma cohort, we are looking forward to learning from other studies,” she added.

Dr. Lundholm presented the late-breaking oral abstract at the annual scientific & clinical congress of the American Association of Clinical Endocrinology.

Asked to comment, session moderator Jenna Sarvaideo, MD, said: “We’re often steeped in tradition. That’s why this abstract and this quality improvement project is so exciting to me because it challenges the history. … and I think it’s ultimately helping patients.”

Dr. Sarvaideo, of Clement J. Zablocki VA Medical Center, Milwaukee, noted that, typically, although the fast will be stopped before 72 hours if the patient develops hypoglycemia, “often they don’t, so we keep going on and on. If we just paid more attention to the beta-hydroxybutyrate, I think that would be practice changing.”

She added that more data would be optimal, given that there were under 100 patients in the study, “but I do think that devising protocols is … very much still at the hands of the endocrinologists. I think that this work could make groups reevaluate their protocol and change it, maybe even with a small dataset and then move on from there and see what they see.”

Indeed, Dr. Lundholm pointed out that some institutions, such as the Mayo Clinic, already include 6-hour BHB measurements (along with glucose and insulin) in their protocols.

“For any institution that already draws regular BHB levels like this, it would be very easy to implement a new stopping criterion without adding any additional costs,” she said in an interview.
 

All insulinomas became apparent in less than 48 hours

The first report to look at the value of testing BHB at regular intervals was published by the Mayo Clinic in 2005 after they noticed patients without insulinoma were complaining of ketosis symptoms such as foul breath and digestive problems toward the end of the fast.

However, although BHB testing is used today as part of the evaluation, it’s typically only drawn at the start of the protocol and again at the time of hypoglycemia or at the end of 72 hours because more frequent values hadn’t been thought to be useful for guiding clinical management, Dr. Lundholm explained. 

Between January 2018 and June 2020, Dr. Lundholm and colleagues followed 34 Cleveland Clinic patients who completed the usual 72-hour fast protocol. Overall, 71% were female, and 26% had undergone prior bariatric surgery procedures. Eleven (32%) developed hypoglycemia and stopped fasting. The other 23 (68%) fasted for the full 72 hours.

Dr. Lundholm and colleagues determined that the fast could have ended earlier in 35% of patients based on an elevated BHB without missing any insulinomas.

And so, in June 2020 the group revised their protocol to include the BHB ≥ 2.7mmol/L stopping criterion. Of the 30 patients evaluated from June 2020 to January 2023, 87% were female and 17% had undergone a bariatric procedure.

Here, 15 (50%) reached a BHB ≥ 2.7mmol/L and ended their fast at an average of 43.8 hours. Another seven (23%) ended the fast after developing hypoglycemia. Just eight patients (27%) fasted for the full 72 hours.

Overall, this resulted in approximately 376 fewer cumulative hours of inpatient admission than if patients had fasted for the full time.

Of the 64 patients who have completed the fasting protocol since 2018, seven (11%) who did have an insulinoma developed hypoglycemia within 48 hours and with a BHB < 2.7 mmol/L (median, 0.15).
 

Advantages: cost, adherence

A day in a general medicine bed at Cleveland Clinic was quoted as costing $2,420, based on publicly available information as of Jan. 1, 2023. “If half of patients leave 1 day earlier, this equates to about $1,210 per patient in savings from bed costs alone,” Dr. Lundholm told this news organization.  

The revised protocol required an additional two to four blood draws, depending on the length of the fast. “The cost of these extra blood tests varies by lab and by count, but even at its highest does not exceed the amount of savings from bed costs,” she noted.

Patient adherence is another potential benefit of the revised protocol.

“Any study that requires 72 hours of patient cooperation is a challenge, particularly in an uncomfortable position like fasting. When we looked at these adherence numbers, we found that the percentage of patients who prematurely ended their fast decreased from 35% to 17% with the updated protocol,” Dr. Lundholm continued.

“This translates to fewer inconclusive results and fewer readmissions for repeat 72-hour fasting. While this was not our primary outcome, it was another noted benefit of our change,” she said.

Dr. Lundholm and Dr. Sarvaideo have reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.