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Vitamin D counters bone density loss with aromatase inhibitors
Among women with breast cancer being treated with aromatase inhibitors (AI), supplementation with vitamin D and calcium protected against bone loss after 5 years, according to results from a prospective cohort study in Brazil. The study found no difference in bone mineral density outcomes at 5 years between women with hormone receptor–positive cancers treated with aromatase inhibitors (AIG) and triple negative or HER-2 positive patients who were treated with another therapy (CG).
About two-thirds of women with breast cancer have tumors that are positive for hormone receptors, and so are often treated with endocrine therapy such as selective estrogen receptor modulators or AI. However, there are concerns that AI treatment may lead to a loss of bone mineral density and impacts on quality of life. This loss is influenced by a range of factors, including body weight, physical activity, smoking, alcohol consumption, corticosteroid use, calcium in the diet, and circulating levels of vitamin D.
Vitamin D helps to regulate absorption of calcium and phosphorus, ensuring that their plasma concentrations are high enough for adequate bone health. But vitamin D deficiency is a common problem, even in tropical areas such as Brazil. “It is high in the general population and especially in postmenopausal breast cancer patients. Thus, vitamin D and calcium supplementation has an impact on these women’s lives,” said lead author Marcelo Antonini, MD, who presented the study (abstract P1-13-04) at the San Antonio Breast Cancer Symposium. He is a researcher at Hospital Servidor Publico Estadual in São Paulo, Brazil.
Although the findings are encouraging, more work needs to be done before it leads to a change in practice. “Larger studies must be carried out to prove this theory; however, in noncancer patients we have already well established the benefits of vitamin D and calcium supplementation,” Dr. Antonini said in an interview
The researchers examined women before the start of treatment, at 6 months, and at 5 years. Those with vitamin D levels below 30 ng/mL received 7,000 IU/day for 8 weeks, followed by a 1,000 IU/day maintenance dose. Subjects with osteopenia received a calcium supplement (500 mg calcium carbonate), and those with osteoporosis received 4 mg zoledronic acid (Zometa, Novartis).
There were 140 patients in both the AIG and CG groups. The average age was 65 years. Sixty-four percent of the AIG group and 71% of the CG group were vitamin D deficient at baseline. At 5 years, the frequencies were 17% and 16%, respectively. Both groups showed significant declines in bone mineral density in the femoral neck and femur at both 6 months and 5 years, but there was no significant difference between them. There was no significant difference between the two groups with respect to bone density loss in the spine.
The study is limited by the fact that it was conducted at a single center and had a small population size.
Another prospective observational study, published earlier this year, looked at vitamin D supplementation in 741 patients (mean age 61.9 years) being treated with aromatase inhibitors, whose baseline vitamin D levels were less 30 ng/mL. They received 16,000 IU dose of oral calcifediol every 2 weeks. At 3 months, individuals who achieved vitamin D levels of 40 ng/mL or higher were less likely to have joint pain (P < .05). At 12 months, data from 473 patients showed that for every 10-ng/mL increase in serum vitamin D at 3 months, there was a reduction in loss of bone marrow density in the lumbar spine (adjusted beta = +0.177%, P < .05), though there were no associations between vitamin D levels and BMD of the femur or total hip.
“Our results suggest that optimal levels of vitamin D are associated with a reduced risk of joint pain related to AI treatment. A target threshold (of vitamin D) levels was set at 40 ng/mL to significantly reduce the increase in joint pain. The authors noted that this threshold is well above the goal of 20 ng/mL recommended by the 2010 Institute of Medicine report.
The study did not receive external funding. Dr. Antonini has no relevant financial disclosures.
Among women with breast cancer being treated with aromatase inhibitors (AI), supplementation with vitamin D and calcium protected against bone loss after 5 years, according to results from a prospective cohort study in Brazil. The study found no difference in bone mineral density outcomes at 5 years between women with hormone receptor–positive cancers treated with aromatase inhibitors (AIG) and triple negative or HER-2 positive patients who were treated with another therapy (CG).
About two-thirds of women with breast cancer have tumors that are positive for hormone receptors, and so are often treated with endocrine therapy such as selective estrogen receptor modulators or AI. However, there are concerns that AI treatment may lead to a loss of bone mineral density and impacts on quality of life. This loss is influenced by a range of factors, including body weight, physical activity, smoking, alcohol consumption, corticosteroid use, calcium in the diet, and circulating levels of vitamin D.
Vitamin D helps to regulate absorption of calcium and phosphorus, ensuring that their plasma concentrations are high enough for adequate bone health. But vitamin D deficiency is a common problem, even in tropical areas such as Brazil. “It is high in the general population and especially in postmenopausal breast cancer patients. Thus, vitamin D and calcium supplementation has an impact on these women’s lives,” said lead author Marcelo Antonini, MD, who presented the study (abstract P1-13-04) at the San Antonio Breast Cancer Symposium. He is a researcher at Hospital Servidor Publico Estadual in São Paulo, Brazil.
Although the findings are encouraging, more work needs to be done before it leads to a change in practice. “Larger studies must be carried out to prove this theory; however, in noncancer patients we have already well established the benefits of vitamin D and calcium supplementation,” Dr. Antonini said in an interview
The researchers examined women before the start of treatment, at 6 months, and at 5 years. Those with vitamin D levels below 30 ng/mL received 7,000 IU/day for 8 weeks, followed by a 1,000 IU/day maintenance dose. Subjects with osteopenia received a calcium supplement (500 mg calcium carbonate), and those with osteoporosis received 4 mg zoledronic acid (Zometa, Novartis).
There were 140 patients in both the AIG and CG groups. The average age was 65 years. Sixty-four percent of the AIG group and 71% of the CG group were vitamin D deficient at baseline. At 5 years, the frequencies were 17% and 16%, respectively. Both groups showed significant declines in bone mineral density in the femoral neck and femur at both 6 months and 5 years, but there was no significant difference between them. There was no significant difference between the two groups with respect to bone density loss in the spine.
The study is limited by the fact that it was conducted at a single center and had a small population size.
Another prospective observational study, published earlier this year, looked at vitamin D supplementation in 741 patients (mean age 61.9 years) being treated with aromatase inhibitors, whose baseline vitamin D levels were less 30 ng/mL. They received 16,000 IU dose of oral calcifediol every 2 weeks. At 3 months, individuals who achieved vitamin D levels of 40 ng/mL or higher were less likely to have joint pain (P < .05). At 12 months, data from 473 patients showed that for every 10-ng/mL increase in serum vitamin D at 3 months, there was a reduction in loss of bone marrow density in the lumbar spine (adjusted beta = +0.177%, P < .05), though there were no associations between vitamin D levels and BMD of the femur or total hip.
“Our results suggest that optimal levels of vitamin D are associated with a reduced risk of joint pain related to AI treatment. A target threshold (of vitamin D) levels was set at 40 ng/mL to significantly reduce the increase in joint pain. The authors noted that this threshold is well above the goal of 20 ng/mL recommended by the 2010 Institute of Medicine report.
The study did not receive external funding. Dr. Antonini has no relevant financial disclosures.
Among women with breast cancer being treated with aromatase inhibitors (AI), supplementation with vitamin D and calcium protected against bone loss after 5 years, according to results from a prospective cohort study in Brazil. The study found no difference in bone mineral density outcomes at 5 years between women with hormone receptor–positive cancers treated with aromatase inhibitors (AIG) and triple negative or HER-2 positive patients who were treated with another therapy (CG).
About two-thirds of women with breast cancer have tumors that are positive for hormone receptors, and so are often treated with endocrine therapy such as selective estrogen receptor modulators or AI. However, there are concerns that AI treatment may lead to a loss of bone mineral density and impacts on quality of life. This loss is influenced by a range of factors, including body weight, physical activity, smoking, alcohol consumption, corticosteroid use, calcium in the diet, and circulating levels of vitamin D.
Vitamin D helps to regulate absorption of calcium and phosphorus, ensuring that their plasma concentrations are high enough for adequate bone health. But vitamin D deficiency is a common problem, even in tropical areas such as Brazil. “It is high in the general population and especially in postmenopausal breast cancer patients. Thus, vitamin D and calcium supplementation has an impact on these women’s lives,” said lead author Marcelo Antonini, MD, who presented the study (abstract P1-13-04) at the San Antonio Breast Cancer Symposium. He is a researcher at Hospital Servidor Publico Estadual in São Paulo, Brazil.
Although the findings are encouraging, more work needs to be done before it leads to a change in practice. “Larger studies must be carried out to prove this theory; however, in noncancer patients we have already well established the benefits of vitamin D and calcium supplementation,” Dr. Antonini said in an interview
The researchers examined women before the start of treatment, at 6 months, and at 5 years. Those with vitamin D levels below 30 ng/mL received 7,000 IU/day for 8 weeks, followed by a 1,000 IU/day maintenance dose. Subjects with osteopenia received a calcium supplement (500 mg calcium carbonate), and those with osteoporosis received 4 mg zoledronic acid (Zometa, Novartis).
There were 140 patients in both the AIG and CG groups. The average age was 65 years. Sixty-four percent of the AIG group and 71% of the CG group were vitamin D deficient at baseline. At 5 years, the frequencies were 17% and 16%, respectively. Both groups showed significant declines in bone mineral density in the femoral neck and femur at both 6 months and 5 years, but there was no significant difference between them. There was no significant difference between the two groups with respect to bone density loss in the spine.
The study is limited by the fact that it was conducted at a single center and had a small population size.
Another prospective observational study, published earlier this year, looked at vitamin D supplementation in 741 patients (mean age 61.9 years) being treated with aromatase inhibitors, whose baseline vitamin D levels were less 30 ng/mL. They received 16,000 IU dose of oral calcifediol every 2 weeks. At 3 months, individuals who achieved vitamin D levels of 40 ng/mL or higher were less likely to have joint pain (P < .05). At 12 months, data from 473 patients showed that for every 10-ng/mL increase in serum vitamin D at 3 months, there was a reduction in loss of bone marrow density in the lumbar spine (adjusted beta = +0.177%, P < .05), though there were no associations between vitamin D levels and BMD of the femur or total hip.
“Our results suggest that optimal levels of vitamin D are associated with a reduced risk of joint pain related to AI treatment. A target threshold (of vitamin D) levels was set at 40 ng/mL to significantly reduce the increase in joint pain. The authors noted that this threshold is well above the goal of 20 ng/mL recommended by the 2010 Institute of Medicine report.
The study did not receive external funding. Dr. Antonini has no relevant financial disclosures.
FROM SABCS 2021
IDF Atlas: 1 in 10 adults worldwide now has diabetes
One in 10 adults worldwide currently has diabetes, accounting for an estimated global health expenditure of $966 billion in U.S. dollars in 2021, according to the new International Diabetes Federation Diabetes Atlas.
The IDF Atlas, 10th edition, was published online Dec. 6, 2021.
Highlights from it were presented during two sessions at the IDF Virtual Congress 2021, covering global diabetes incidence and prevalence, mortality, and costs, as well as new sections in this edition devoted to adult-onset type 1 diabetes, childhood-onset type 2 diabetes, and the interactions between diabetes and COVID-19.
More detailed data from some of the Atlas chapters were also published Dec. 6, 2021, in separate papers in the IDF journal Diabetes Research and Clinical Practice, with more publications planned.
Information for the Atlas comes from peer-reviewed literature, unpublished reports, and national registries. This latest edition includes 219 data sources from 144 countries, with figures for other countries extrapolated.
Atlas cochair Dianna Magliano, PhD, reviewed some of the highlights. Half of those currently with diabetes, or about 240 million adults, are undiagnosed, and another 319 million have impaired fasting glucose. Over three-quarters of all adults with diabetes now live in low- and middle-income countries. And about 6.7 million deaths in 2021 can be attributed to diabetes.
The Atlas also predicts increases in these numbers over the coming decades if current trends continue.
“Our data and projections tell a sobering story. Diabetes prevalence is expected to increase globally. The number of adults with diabetes will rise from 537 million in 2021 to 786 million ... by the year 2045, an increase of 46%. Rises are expected in every region of the world, with the largest increases expected to occur in the regions of Africa, the Middle East, and Southeast Asia,” said Dr. Magliano, head of diabetes and population health at the Baker Heart and Diabetes Institute, Melbourne.
Since 2019, when the last Atlas was published, the 2021 numbers represent increases of 73.6 million more adults with diabetes including 7.8 million more undiagnosed, 2.5 million more deaths attributed to diabetes, and an additional global expenditure of $206 billion.
Increases have also occurred in the number of people with prediabetes, children with type 1 diabetes, and pregnancies affected by diabetes, Dr. Magliano reported.
“There is a strong need for effective intervention strategies and policies to stall the increase in the number of people developing diabetes across the world,” she added.
Projected rise in expenditures for diabetes will be ‘unsustainable’
The current $966 billion global health expenditure caused by diabetes represents a 316% increase from the $232 billion reported in 2006, according to William H. Herman, MD, professor of internal medicine and epidemiology at the University of Michigan, Ann Arbor.
By region, 43% of current diabetes-related global expenditures are in North America, 25% in the Western Pacific, and 20% in Europe, while 12% are from the regions of South and Central America, North Africa, Africa, and Southeast Asia combined, Herman said.
The direct costs of diabetes are projected to grow to $1054 billion in 2045, an increase of just 9% over 25 years. The reason for the far lower increase going forward, compared with the tripling in the 15 years prior, is because of the anticipated diabetes rise in regions of the world where per-person spending on diabetes is low, a situation Dr. Herman called “unsustainable.”
“The keys to controlling the global costs of diabetes care are diabetes prevention and providing effective care to the largest number of people at the lowest possible cost,” he said.
Diabetes-related mortality: Some shifts since 2019
One third of the current 6.7 million diabetes-related deaths in 2021 were in people younger than 60 years, said Elbert S. Huang, MD, professor of medicine and public health sciences at the University of Chicago.
Overall, diabetes accounted for 11.8% of total global deaths in people younger than 60 years, but that varied widely, from 24.5% in the Middle East/North Africa to just 6.9% in Southeast Asia.
The regions with the highest number of diabetes-related deaths in people younger than 60 years in 2021 were the Western Pacific and the Middle East/North Africa, a major change from just 2 years ago, when Southeast Asia and Africa saw the greatest numbers of diabetes-related deaths in working-age adults.
“These findings mirror recent reports on inadequate uptake of diabetes prevention programs as well as stagnant quality of care trends for the past decade and reemphasize the need to address noncommunicable diseases across the globe,” Dr. Huang said.
Diabetes and COVID-19: Other factors partly explain the increased risk
Gillian Booth, MD, summarized the current literature on COVID-19 and diabetes including a meta-analysis her group conducted of 300 studies from around the world, with 58% from high-income countries.
The risk for increased COVID-19 severity in people with diabetes could be at least partly explained by factors such as age, sex, and comorbidities, said Dr. Booth, professor in the department of medicine and the Institute of Health Policy, Management, and Evaluation at the University of Toronto.
For example, the unadjusted pooled odds of hospitalization with COVID-19 in patients with diabetes, compared with those without diabetes, was 3.69, but dropped to 1.73 after adjustment for age, sex, and having one or more comorbidities. For COVID-19–related death, those odds ratios were 2.32 unadjusted versus 1.59 adjusted. In both cases, the values were still significant after adjustment, she emphasized.
Overall, hyperglycemia and hemoglobin A1c at admission emerged as significant independent predictors of severe outcomes.
“Further research is needed to understand the interplay between COVID-19 and diabetes and how best to address the disproportionate burden of COVID-19 among people living with diabetes,” she stressed.
Adult-onset type 1 diabetes: Growing recognition of the burden
Ascertainment of data for both adult-onset type 1 and type 2 diabetes in youth was subject to significant limitations.
For adult-onset type 1 diabetes, Jessica Harding, PhD, pointed to the fact that the epidemiology of adult-onset type 1 diabetes hasn’t been well characterized because of the historical focus on children, the difficulty of distinguishing it from type 2 diabetes in adults, and that many registries simply don’t include incident data across the lifespan for type 1 diabetes.
Nonetheless, she said, “there is growing recognition of the burden of adult-onset type 1,” noting that the American Diabetes Association and European Association for the Study of Diabetes just published a consensus statement addressing the topic.
A systematic review of 46 studies representing 32 countries or regions revealed that countries with the highest incidence of type 1 diabetes onset per population of 100,000 ages 20 or above were Eritrea, at 46.2, followed by Sweden and Ireland, both at 30.6, and Finland, at 0. The lowest rates were in Asian countries.
While the Nordic countries (Finland, Sweden, and Norway) are among the top for incidence of both childhood-onset (0-14 years) and adult-onset type 1 diabetes, Eritrea isn’t even among the top 10 for childhood onset.
The unusual situation in Eritrea is the subject of current study but the reasons aren’t yet clear, noted Dr. Magliano, of Emory University, Atlanta, during the question-and-answer period.
And only seven studies, 15%, used biomarkers to determine type 1 diabetes status, suggesting “there is a pressing need to improve the quality and quantity of information on adult-onset type 1 diabetes, particularly in those low- and middle-income countries,” Dr. Harding said.
Type 2 diabetes in youth: A call for better data
When presenting the data for childhood-onset type 2 diabetes, Andrea Luk, MD, noted: “The onset of advanced complications during the most productive time of life has significant impact on individuals, communities, and health economies.”
In 19 studies, the highest reported prevalence of type 2 diabetes in youth was in Brazil, Mexico, indigenous populations of the United States and Canada, and the Black population in the United States, with rates ranging from 160 per 100,000 to 3300 per 100,000. The lowest prevalence rates of 0.6 per 100,000 to 2.7 per 100,000 were reported in Europe. Incidence data were similar, with the highest rates from 31 per 100,000 to 94 per 100,000 and the lowest 0.1 per 100,000 to 0.8 per 100,000 per year.
Of note, Dr. Luk pointed out that childhood obesity is an important factor but not the only one.
“Some populations that have a low prevalence of obesity, such as East Asians, reported higher incidence rates of youth-onset type 2 diabetes than populations with a greater burden of childhood obesity.”
There was variability in incidence rates for youth of similar ethnic background but from different countries. “Apart from genetic predisposition and background obesogenic environment, disparity in socioeconomic status, access to health care, and cultural practices are other contributors to differences in risk of type 2 diabetes in youth,” noted Dr. Luk, associate professor in the division of endocrinology, Department of Medicine and Therapeutics, Chinese University of Hong Kong.
She also noted that the incidence of type 2 diabetes was extremely low in prepubertal children and rises gradually during puberty, and that the incidence is higher in girls than boys but that reverses in adulthood.
Compared with adults with type 2 diabetes, youth with type 2 diabetes had a more adverse glycemic trajectory and higher rates of metformin failure.
And compared with youth with type 1 diabetes, those with type 2 diabetes had more adverse metabolic profiles and higher rates of vascular complications.
“A strong call must be made for the collection of trend data to assess global burden of type 2 diabetes in youth,” she concluded.
Dr. Luk reported serving as an advisory panel member for and/or receiving research support from Amgen, AstraZeneca, Boehringer Ingelheim, Sanofi, the Asia Diabetes Foundation, Bayer, Lee’s Pharmaceutical, MSD, Novo Nordisk, Roche, Sugardown, and Takeda. The other authors reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
One in 10 adults worldwide currently has diabetes, accounting for an estimated global health expenditure of $966 billion in U.S. dollars in 2021, according to the new International Diabetes Federation Diabetes Atlas.
The IDF Atlas, 10th edition, was published online Dec. 6, 2021.
Highlights from it were presented during two sessions at the IDF Virtual Congress 2021, covering global diabetes incidence and prevalence, mortality, and costs, as well as new sections in this edition devoted to adult-onset type 1 diabetes, childhood-onset type 2 diabetes, and the interactions between diabetes and COVID-19.
More detailed data from some of the Atlas chapters were also published Dec. 6, 2021, in separate papers in the IDF journal Diabetes Research and Clinical Practice, with more publications planned.
Information for the Atlas comes from peer-reviewed literature, unpublished reports, and national registries. This latest edition includes 219 data sources from 144 countries, with figures for other countries extrapolated.
Atlas cochair Dianna Magliano, PhD, reviewed some of the highlights. Half of those currently with diabetes, or about 240 million adults, are undiagnosed, and another 319 million have impaired fasting glucose. Over three-quarters of all adults with diabetes now live in low- and middle-income countries. And about 6.7 million deaths in 2021 can be attributed to diabetes.
The Atlas also predicts increases in these numbers over the coming decades if current trends continue.
“Our data and projections tell a sobering story. Diabetes prevalence is expected to increase globally. The number of adults with diabetes will rise from 537 million in 2021 to 786 million ... by the year 2045, an increase of 46%. Rises are expected in every region of the world, with the largest increases expected to occur in the regions of Africa, the Middle East, and Southeast Asia,” said Dr. Magliano, head of diabetes and population health at the Baker Heart and Diabetes Institute, Melbourne.
Since 2019, when the last Atlas was published, the 2021 numbers represent increases of 73.6 million more adults with diabetes including 7.8 million more undiagnosed, 2.5 million more deaths attributed to diabetes, and an additional global expenditure of $206 billion.
Increases have also occurred in the number of people with prediabetes, children with type 1 diabetes, and pregnancies affected by diabetes, Dr. Magliano reported.
“There is a strong need for effective intervention strategies and policies to stall the increase in the number of people developing diabetes across the world,” she added.
Projected rise in expenditures for diabetes will be ‘unsustainable’
The current $966 billion global health expenditure caused by diabetes represents a 316% increase from the $232 billion reported in 2006, according to William H. Herman, MD, professor of internal medicine and epidemiology at the University of Michigan, Ann Arbor.
By region, 43% of current diabetes-related global expenditures are in North America, 25% in the Western Pacific, and 20% in Europe, while 12% are from the regions of South and Central America, North Africa, Africa, and Southeast Asia combined, Herman said.
The direct costs of diabetes are projected to grow to $1054 billion in 2045, an increase of just 9% over 25 years. The reason for the far lower increase going forward, compared with the tripling in the 15 years prior, is because of the anticipated diabetes rise in regions of the world where per-person spending on diabetes is low, a situation Dr. Herman called “unsustainable.”
“The keys to controlling the global costs of diabetes care are diabetes prevention and providing effective care to the largest number of people at the lowest possible cost,” he said.
Diabetes-related mortality: Some shifts since 2019
One third of the current 6.7 million diabetes-related deaths in 2021 were in people younger than 60 years, said Elbert S. Huang, MD, professor of medicine and public health sciences at the University of Chicago.
Overall, diabetes accounted for 11.8% of total global deaths in people younger than 60 years, but that varied widely, from 24.5% in the Middle East/North Africa to just 6.9% in Southeast Asia.
The regions with the highest number of diabetes-related deaths in people younger than 60 years in 2021 were the Western Pacific and the Middle East/North Africa, a major change from just 2 years ago, when Southeast Asia and Africa saw the greatest numbers of diabetes-related deaths in working-age adults.
“These findings mirror recent reports on inadequate uptake of diabetes prevention programs as well as stagnant quality of care trends for the past decade and reemphasize the need to address noncommunicable diseases across the globe,” Dr. Huang said.
Diabetes and COVID-19: Other factors partly explain the increased risk
Gillian Booth, MD, summarized the current literature on COVID-19 and diabetes including a meta-analysis her group conducted of 300 studies from around the world, with 58% from high-income countries.
The risk for increased COVID-19 severity in people with diabetes could be at least partly explained by factors such as age, sex, and comorbidities, said Dr. Booth, professor in the department of medicine and the Institute of Health Policy, Management, and Evaluation at the University of Toronto.
For example, the unadjusted pooled odds of hospitalization with COVID-19 in patients with diabetes, compared with those without diabetes, was 3.69, but dropped to 1.73 after adjustment for age, sex, and having one or more comorbidities. For COVID-19–related death, those odds ratios were 2.32 unadjusted versus 1.59 adjusted. In both cases, the values were still significant after adjustment, she emphasized.
Overall, hyperglycemia and hemoglobin A1c at admission emerged as significant independent predictors of severe outcomes.
“Further research is needed to understand the interplay between COVID-19 and diabetes and how best to address the disproportionate burden of COVID-19 among people living with diabetes,” she stressed.
Adult-onset type 1 diabetes: Growing recognition of the burden
Ascertainment of data for both adult-onset type 1 and type 2 diabetes in youth was subject to significant limitations.
For adult-onset type 1 diabetes, Jessica Harding, PhD, pointed to the fact that the epidemiology of adult-onset type 1 diabetes hasn’t been well characterized because of the historical focus on children, the difficulty of distinguishing it from type 2 diabetes in adults, and that many registries simply don’t include incident data across the lifespan for type 1 diabetes.
Nonetheless, she said, “there is growing recognition of the burden of adult-onset type 1,” noting that the American Diabetes Association and European Association for the Study of Diabetes just published a consensus statement addressing the topic.
A systematic review of 46 studies representing 32 countries or regions revealed that countries with the highest incidence of type 1 diabetes onset per population of 100,000 ages 20 or above were Eritrea, at 46.2, followed by Sweden and Ireland, both at 30.6, and Finland, at 0. The lowest rates were in Asian countries.
While the Nordic countries (Finland, Sweden, and Norway) are among the top for incidence of both childhood-onset (0-14 years) and adult-onset type 1 diabetes, Eritrea isn’t even among the top 10 for childhood onset.
The unusual situation in Eritrea is the subject of current study but the reasons aren’t yet clear, noted Dr. Magliano, of Emory University, Atlanta, during the question-and-answer period.
And only seven studies, 15%, used biomarkers to determine type 1 diabetes status, suggesting “there is a pressing need to improve the quality and quantity of information on adult-onset type 1 diabetes, particularly in those low- and middle-income countries,” Dr. Harding said.
Type 2 diabetes in youth: A call for better data
When presenting the data for childhood-onset type 2 diabetes, Andrea Luk, MD, noted: “The onset of advanced complications during the most productive time of life has significant impact on individuals, communities, and health economies.”
In 19 studies, the highest reported prevalence of type 2 diabetes in youth was in Brazil, Mexico, indigenous populations of the United States and Canada, and the Black population in the United States, with rates ranging from 160 per 100,000 to 3300 per 100,000. The lowest prevalence rates of 0.6 per 100,000 to 2.7 per 100,000 were reported in Europe. Incidence data were similar, with the highest rates from 31 per 100,000 to 94 per 100,000 and the lowest 0.1 per 100,000 to 0.8 per 100,000 per year.
Of note, Dr. Luk pointed out that childhood obesity is an important factor but not the only one.
“Some populations that have a low prevalence of obesity, such as East Asians, reported higher incidence rates of youth-onset type 2 diabetes than populations with a greater burden of childhood obesity.”
There was variability in incidence rates for youth of similar ethnic background but from different countries. “Apart from genetic predisposition and background obesogenic environment, disparity in socioeconomic status, access to health care, and cultural practices are other contributors to differences in risk of type 2 diabetes in youth,” noted Dr. Luk, associate professor in the division of endocrinology, Department of Medicine and Therapeutics, Chinese University of Hong Kong.
She also noted that the incidence of type 2 diabetes was extremely low in prepubertal children and rises gradually during puberty, and that the incidence is higher in girls than boys but that reverses in adulthood.
Compared with adults with type 2 diabetes, youth with type 2 diabetes had a more adverse glycemic trajectory and higher rates of metformin failure.
And compared with youth with type 1 diabetes, those with type 2 diabetes had more adverse metabolic profiles and higher rates of vascular complications.
“A strong call must be made for the collection of trend data to assess global burden of type 2 diabetes in youth,” she concluded.
Dr. Luk reported serving as an advisory panel member for and/or receiving research support from Amgen, AstraZeneca, Boehringer Ingelheim, Sanofi, the Asia Diabetes Foundation, Bayer, Lee’s Pharmaceutical, MSD, Novo Nordisk, Roche, Sugardown, and Takeda. The other authors reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
One in 10 adults worldwide currently has diabetes, accounting for an estimated global health expenditure of $966 billion in U.S. dollars in 2021, according to the new International Diabetes Federation Diabetes Atlas.
The IDF Atlas, 10th edition, was published online Dec. 6, 2021.
Highlights from it were presented during two sessions at the IDF Virtual Congress 2021, covering global diabetes incidence and prevalence, mortality, and costs, as well as new sections in this edition devoted to adult-onset type 1 diabetes, childhood-onset type 2 diabetes, and the interactions between diabetes and COVID-19.
More detailed data from some of the Atlas chapters were also published Dec. 6, 2021, in separate papers in the IDF journal Diabetes Research and Clinical Practice, with more publications planned.
Information for the Atlas comes from peer-reviewed literature, unpublished reports, and national registries. This latest edition includes 219 data sources from 144 countries, with figures for other countries extrapolated.
Atlas cochair Dianna Magliano, PhD, reviewed some of the highlights. Half of those currently with diabetes, or about 240 million adults, are undiagnosed, and another 319 million have impaired fasting glucose. Over three-quarters of all adults with diabetes now live in low- and middle-income countries. And about 6.7 million deaths in 2021 can be attributed to diabetes.
The Atlas also predicts increases in these numbers over the coming decades if current trends continue.
“Our data and projections tell a sobering story. Diabetes prevalence is expected to increase globally. The number of adults with diabetes will rise from 537 million in 2021 to 786 million ... by the year 2045, an increase of 46%. Rises are expected in every region of the world, with the largest increases expected to occur in the regions of Africa, the Middle East, and Southeast Asia,” said Dr. Magliano, head of diabetes and population health at the Baker Heart and Diabetes Institute, Melbourne.
Since 2019, when the last Atlas was published, the 2021 numbers represent increases of 73.6 million more adults with diabetes including 7.8 million more undiagnosed, 2.5 million more deaths attributed to diabetes, and an additional global expenditure of $206 billion.
Increases have also occurred in the number of people with prediabetes, children with type 1 diabetes, and pregnancies affected by diabetes, Dr. Magliano reported.
“There is a strong need for effective intervention strategies and policies to stall the increase in the number of people developing diabetes across the world,” she added.
Projected rise in expenditures for diabetes will be ‘unsustainable’
The current $966 billion global health expenditure caused by diabetes represents a 316% increase from the $232 billion reported in 2006, according to William H. Herman, MD, professor of internal medicine and epidemiology at the University of Michigan, Ann Arbor.
By region, 43% of current diabetes-related global expenditures are in North America, 25% in the Western Pacific, and 20% in Europe, while 12% are from the regions of South and Central America, North Africa, Africa, and Southeast Asia combined, Herman said.
The direct costs of diabetes are projected to grow to $1054 billion in 2045, an increase of just 9% over 25 years. The reason for the far lower increase going forward, compared with the tripling in the 15 years prior, is because of the anticipated diabetes rise in regions of the world where per-person spending on diabetes is low, a situation Dr. Herman called “unsustainable.”
“The keys to controlling the global costs of diabetes care are diabetes prevention and providing effective care to the largest number of people at the lowest possible cost,” he said.
Diabetes-related mortality: Some shifts since 2019
One third of the current 6.7 million diabetes-related deaths in 2021 were in people younger than 60 years, said Elbert S. Huang, MD, professor of medicine and public health sciences at the University of Chicago.
Overall, diabetes accounted for 11.8% of total global deaths in people younger than 60 years, but that varied widely, from 24.5% in the Middle East/North Africa to just 6.9% in Southeast Asia.
The regions with the highest number of diabetes-related deaths in people younger than 60 years in 2021 were the Western Pacific and the Middle East/North Africa, a major change from just 2 years ago, when Southeast Asia and Africa saw the greatest numbers of diabetes-related deaths in working-age adults.
“These findings mirror recent reports on inadequate uptake of diabetes prevention programs as well as stagnant quality of care trends for the past decade and reemphasize the need to address noncommunicable diseases across the globe,” Dr. Huang said.
Diabetes and COVID-19: Other factors partly explain the increased risk
Gillian Booth, MD, summarized the current literature on COVID-19 and diabetes including a meta-analysis her group conducted of 300 studies from around the world, with 58% from high-income countries.
The risk for increased COVID-19 severity in people with diabetes could be at least partly explained by factors such as age, sex, and comorbidities, said Dr. Booth, professor in the department of medicine and the Institute of Health Policy, Management, and Evaluation at the University of Toronto.
For example, the unadjusted pooled odds of hospitalization with COVID-19 in patients with diabetes, compared with those without diabetes, was 3.69, but dropped to 1.73 after adjustment for age, sex, and having one or more comorbidities. For COVID-19–related death, those odds ratios were 2.32 unadjusted versus 1.59 adjusted. In both cases, the values were still significant after adjustment, she emphasized.
Overall, hyperglycemia and hemoglobin A1c at admission emerged as significant independent predictors of severe outcomes.
“Further research is needed to understand the interplay between COVID-19 and diabetes and how best to address the disproportionate burden of COVID-19 among people living with diabetes,” she stressed.
Adult-onset type 1 diabetes: Growing recognition of the burden
Ascertainment of data for both adult-onset type 1 and type 2 diabetes in youth was subject to significant limitations.
For adult-onset type 1 diabetes, Jessica Harding, PhD, pointed to the fact that the epidemiology of adult-onset type 1 diabetes hasn’t been well characterized because of the historical focus on children, the difficulty of distinguishing it from type 2 diabetes in adults, and that many registries simply don’t include incident data across the lifespan for type 1 diabetes.
Nonetheless, she said, “there is growing recognition of the burden of adult-onset type 1,” noting that the American Diabetes Association and European Association for the Study of Diabetes just published a consensus statement addressing the topic.
A systematic review of 46 studies representing 32 countries or regions revealed that countries with the highest incidence of type 1 diabetes onset per population of 100,000 ages 20 or above were Eritrea, at 46.2, followed by Sweden and Ireland, both at 30.6, and Finland, at 0. The lowest rates were in Asian countries.
While the Nordic countries (Finland, Sweden, and Norway) are among the top for incidence of both childhood-onset (0-14 years) and adult-onset type 1 diabetes, Eritrea isn’t even among the top 10 for childhood onset.
The unusual situation in Eritrea is the subject of current study but the reasons aren’t yet clear, noted Dr. Magliano, of Emory University, Atlanta, during the question-and-answer period.
And only seven studies, 15%, used biomarkers to determine type 1 diabetes status, suggesting “there is a pressing need to improve the quality and quantity of information on adult-onset type 1 diabetes, particularly in those low- and middle-income countries,” Dr. Harding said.
Type 2 diabetes in youth: A call for better data
When presenting the data for childhood-onset type 2 diabetes, Andrea Luk, MD, noted: “The onset of advanced complications during the most productive time of life has significant impact on individuals, communities, and health economies.”
In 19 studies, the highest reported prevalence of type 2 diabetes in youth was in Brazil, Mexico, indigenous populations of the United States and Canada, and the Black population in the United States, with rates ranging from 160 per 100,000 to 3300 per 100,000. The lowest prevalence rates of 0.6 per 100,000 to 2.7 per 100,000 were reported in Europe. Incidence data were similar, with the highest rates from 31 per 100,000 to 94 per 100,000 and the lowest 0.1 per 100,000 to 0.8 per 100,000 per year.
Of note, Dr. Luk pointed out that childhood obesity is an important factor but not the only one.
“Some populations that have a low prevalence of obesity, such as East Asians, reported higher incidence rates of youth-onset type 2 diabetes than populations with a greater burden of childhood obesity.”
There was variability in incidence rates for youth of similar ethnic background but from different countries. “Apart from genetic predisposition and background obesogenic environment, disparity in socioeconomic status, access to health care, and cultural practices are other contributors to differences in risk of type 2 diabetes in youth,” noted Dr. Luk, associate professor in the division of endocrinology, Department of Medicine and Therapeutics, Chinese University of Hong Kong.
She also noted that the incidence of type 2 diabetes was extremely low in prepubertal children and rises gradually during puberty, and that the incidence is higher in girls than boys but that reverses in adulthood.
Compared with adults with type 2 diabetes, youth with type 2 diabetes had a more adverse glycemic trajectory and higher rates of metformin failure.
And compared with youth with type 1 diabetes, those with type 2 diabetes had more adverse metabolic profiles and higher rates of vascular complications.
“A strong call must be made for the collection of trend data to assess global burden of type 2 diabetes in youth,” she concluded.
Dr. Luk reported serving as an advisory panel member for and/or receiving research support from Amgen, AstraZeneca, Boehringer Ingelheim, Sanofi, the Asia Diabetes Foundation, Bayer, Lee’s Pharmaceutical, MSD, Novo Nordisk, Roche, Sugardown, and Takeda. The other authors reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
More brain aging observed in older patients with child-onset epilepsy
While the meaning of the findings aren’t entirely clear, new research offers insight into the aging brains of people who developed child-onset epilepsy: A cohort with an average age of 63 appears to be more likely than controls to show signs of brain deterioration, according to a study presented at the annual meeting of the American Epilepsy Society.
“,” lead author Matti Sillanpää, MD, PhD, a researcher and former child neurologist based at the University of Turko in Finland, said in an interview.
The study began 60 years ago when Finnish researchers started to track 99 subjects who were under 16 and had developed uncomplicated epilepsy. In 2012, 51 participants returned for assessments (9 of the original cohort had died, 2 didn’t speak Finnish as a mother tongue, and 15 had left the country or couldn’t be found).
In 2017, 41 participants agreed to take part in follow-up assessments (1 of the 2012 cohort could not be traced, and 9 declined to participate.)
Researchers launched the follow-up assessments to provide more insight into aging and epilepsy, Dr. Sillanpää said. “While we are in the early stages of understanding the brain and cognitive aging processes of people with epilepsy, there are enough worrisome signs from neuroimaging and cognitive studies to suggest that much more clinical and research attention is warranted. Especially important are population-based investigations that include persons with both remitted as well as active epilepsy in order to obtain a clearer understanding of the overall aging risks involved.”
The average age of the 41 subjects in the second assessment was 63.2 (4.1), and 58% were female. Just over half (52%) had focal epilepsy, and 48% had generalized epilepsy. In 74%, epilepsy had remitted, and it remained active in the rest (26%).
For the study, researchers compared the subjects with a control group of 46 subjects, 50% of whom were female, with an average age of 63.0 (4.13). The original control group had 99 participants, and 52 took part in 2012. Of those, 6 declined to participate in the 2017 assessments.
The researchers report these findings:
- Patients with active epilepsy were more likely to have neurologic signs than were those with remitted epilepsy (P = .015), especially the most common signs – cerebellar signs (P < .001). There was a trend toward cerebellar atrophy but it wasn’t statistically significant (P = .06).
- Patients with focal epilepsies were more likely to have neurologic signs (P = .008) and, specifically, cerebellar signs (P = .018) than were those with generalized epilepsies.
- The study authors calculated the lifetime usage of four drugs: carbamazepine, diphenylhydantoin, phenobarbital, and valproate. They found that patients with higher usage had more peripheral neuropathy, especially those with high levels of diphenylhydantoin, and phenobarbital usage.
- Overall, patients with epilepsy versus controls and those with active epilepsy versus remitting epilepsy were more likely to show adjusted declines in “cognitive trajectories” (both P < .05)
The researchers also estimated beta-amyloid levels via Pittsburgh Compound B positron emission tomography (PIB-PET); some specialists consider PIB-positive levels to be a sign of more beta amyloid.
From 2012 to 2017, the percentage of patients with epilepsy who were PIB positive grew from 22% to 33% (P = .03), while the percentage grew from 7% to 11% in the controls (P = .04). “The presence of amyloid and increasing positivity is cause for concern, and further research into the course of the participants is critical,” Dr. Sillanpää said.
It’s not clear if higher levels of brain aging are affecting the lives of participants, he said. “No one in the cohort has a diagnosed dementia at present, but going forward it will be important to pay close attention to the day-to-day functional status of participants.”
The mechanisms that may cause more brain aging in epilepsy aren’t known. However, “the CDC has shown through population-based investigations that people with epilepsy as a group may be more socially isolated, more physically inactive, and may harbor other lifestyle issues that we now know to be counterproductive to successful cognitive and brain aging in the general population,” Dr. Sillanpää said. “These factors need to be examined in depth in aging persons with epilepsy to gain a sound understanding of the risk and resilience factors that are most important so that people with epilepsy can act accordingly.”
The researchers also report that in patients with epilepsy, there’s evidence of a link between hypertension and hippocampal atrophy. They reported trends toward links between obesity and ischemic disease and between type 2 diabetes and hippocampal atrophy.
Going forward, “the findings may be helpful in the treatment and counseling of patients with epilepsy and especially advocating for those health and lifestyle practices that may be beneficial to long-term courses,” Dr. Sillanpää said. As for the study cohort, he said, researchers plan to continue monitoring them to track their long-term outcomes and any development of neurological disorders such as Alzheimer’s disease.
This work was funded by CURE Epilepsy, the National Governmental Research Grant, and the Pro Humanitate Foundation Grant. The study authors report no disclosures.
While the meaning of the findings aren’t entirely clear, new research offers insight into the aging brains of people who developed child-onset epilepsy: A cohort with an average age of 63 appears to be more likely than controls to show signs of brain deterioration, according to a study presented at the annual meeting of the American Epilepsy Society.
“,” lead author Matti Sillanpää, MD, PhD, a researcher and former child neurologist based at the University of Turko in Finland, said in an interview.
The study began 60 years ago when Finnish researchers started to track 99 subjects who were under 16 and had developed uncomplicated epilepsy. In 2012, 51 participants returned for assessments (9 of the original cohort had died, 2 didn’t speak Finnish as a mother tongue, and 15 had left the country or couldn’t be found).
In 2017, 41 participants agreed to take part in follow-up assessments (1 of the 2012 cohort could not be traced, and 9 declined to participate.)
Researchers launched the follow-up assessments to provide more insight into aging and epilepsy, Dr. Sillanpää said. “While we are in the early stages of understanding the brain and cognitive aging processes of people with epilepsy, there are enough worrisome signs from neuroimaging and cognitive studies to suggest that much more clinical and research attention is warranted. Especially important are population-based investigations that include persons with both remitted as well as active epilepsy in order to obtain a clearer understanding of the overall aging risks involved.”
The average age of the 41 subjects in the second assessment was 63.2 (4.1), and 58% were female. Just over half (52%) had focal epilepsy, and 48% had generalized epilepsy. In 74%, epilepsy had remitted, and it remained active in the rest (26%).
For the study, researchers compared the subjects with a control group of 46 subjects, 50% of whom were female, with an average age of 63.0 (4.13). The original control group had 99 participants, and 52 took part in 2012. Of those, 6 declined to participate in the 2017 assessments.
The researchers report these findings:
- Patients with active epilepsy were more likely to have neurologic signs than were those with remitted epilepsy (P = .015), especially the most common signs – cerebellar signs (P < .001). There was a trend toward cerebellar atrophy but it wasn’t statistically significant (P = .06).
- Patients with focal epilepsies were more likely to have neurologic signs (P = .008) and, specifically, cerebellar signs (P = .018) than were those with generalized epilepsies.
- The study authors calculated the lifetime usage of four drugs: carbamazepine, diphenylhydantoin, phenobarbital, and valproate. They found that patients with higher usage had more peripheral neuropathy, especially those with high levels of diphenylhydantoin, and phenobarbital usage.
- Overall, patients with epilepsy versus controls and those with active epilepsy versus remitting epilepsy were more likely to show adjusted declines in “cognitive trajectories” (both P < .05)
The researchers also estimated beta-amyloid levels via Pittsburgh Compound B positron emission tomography (PIB-PET); some specialists consider PIB-positive levels to be a sign of more beta amyloid.
From 2012 to 2017, the percentage of patients with epilepsy who were PIB positive grew from 22% to 33% (P = .03), while the percentage grew from 7% to 11% in the controls (P = .04). “The presence of amyloid and increasing positivity is cause for concern, and further research into the course of the participants is critical,” Dr. Sillanpää said.
It’s not clear if higher levels of brain aging are affecting the lives of participants, he said. “No one in the cohort has a diagnosed dementia at present, but going forward it will be important to pay close attention to the day-to-day functional status of participants.”
The mechanisms that may cause more brain aging in epilepsy aren’t known. However, “the CDC has shown through population-based investigations that people with epilepsy as a group may be more socially isolated, more physically inactive, and may harbor other lifestyle issues that we now know to be counterproductive to successful cognitive and brain aging in the general population,” Dr. Sillanpää said. “These factors need to be examined in depth in aging persons with epilepsy to gain a sound understanding of the risk and resilience factors that are most important so that people with epilepsy can act accordingly.”
The researchers also report that in patients with epilepsy, there’s evidence of a link between hypertension and hippocampal atrophy. They reported trends toward links between obesity and ischemic disease and between type 2 diabetes and hippocampal atrophy.
Going forward, “the findings may be helpful in the treatment and counseling of patients with epilepsy and especially advocating for those health and lifestyle practices that may be beneficial to long-term courses,” Dr. Sillanpää said. As for the study cohort, he said, researchers plan to continue monitoring them to track their long-term outcomes and any development of neurological disorders such as Alzheimer’s disease.
This work was funded by CURE Epilepsy, the National Governmental Research Grant, and the Pro Humanitate Foundation Grant. The study authors report no disclosures.
While the meaning of the findings aren’t entirely clear, new research offers insight into the aging brains of people who developed child-onset epilepsy: A cohort with an average age of 63 appears to be more likely than controls to show signs of brain deterioration, according to a study presented at the annual meeting of the American Epilepsy Society.
“,” lead author Matti Sillanpää, MD, PhD, a researcher and former child neurologist based at the University of Turko in Finland, said in an interview.
The study began 60 years ago when Finnish researchers started to track 99 subjects who were under 16 and had developed uncomplicated epilepsy. In 2012, 51 participants returned for assessments (9 of the original cohort had died, 2 didn’t speak Finnish as a mother tongue, and 15 had left the country or couldn’t be found).
In 2017, 41 participants agreed to take part in follow-up assessments (1 of the 2012 cohort could not be traced, and 9 declined to participate.)
Researchers launched the follow-up assessments to provide more insight into aging and epilepsy, Dr. Sillanpää said. “While we are in the early stages of understanding the brain and cognitive aging processes of people with epilepsy, there are enough worrisome signs from neuroimaging and cognitive studies to suggest that much more clinical and research attention is warranted. Especially important are population-based investigations that include persons with both remitted as well as active epilepsy in order to obtain a clearer understanding of the overall aging risks involved.”
The average age of the 41 subjects in the second assessment was 63.2 (4.1), and 58% were female. Just over half (52%) had focal epilepsy, and 48% had generalized epilepsy. In 74%, epilepsy had remitted, and it remained active in the rest (26%).
For the study, researchers compared the subjects with a control group of 46 subjects, 50% of whom were female, with an average age of 63.0 (4.13). The original control group had 99 participants, and 52 took part in 2012. Of those, 6 declined to participate in the 2017 assessments.
The researchers report these findings:
- Patients with active epilepsy were more likely to have neurologic signs than were those with remitted epilepsy (P = .015), especially the most common signs – cerebellar signs (P < .001). There was a trend toward cerebellar atrophy but it wasn’t statistically significant (P = .06).
- Patients with focal epilepsies were more likely to have neurologic signs (P = .008) and, specifically, cerebellar signs (P = .018) than were those with generalized epilepsies.
- The study authors calculated the lifetime usage of four drugs: carbamazepine, diphenylhydantoin, phenobarbital, and valproate. They found that patients with higher usage had more peripheral neuropathy, especially those with high levels of diphenylhydantoin, and phenobarbital usage.
- Overall, patients with epilepsy versus controls and those with active epilepsy versus remitting epilepsy were more likely to show adjusted declines in “cognitive trajectories” (both P < .05)
The researchers also estimated beta-amyloid levels via Pittsburgh Compound B positron emission tomography (PIB-PET); some specialists consider PIB-positive levels to be a sign of more beta amyloid.
From 2012 to 2017, the percentage of patients with epilepsy who were PIB positive grew from 22% to 33% (P = .03), while the percentage grew from 7% to 11% in the controls (P = .04). “The presence of amyloid and increasing positivity is cause for concern, and further research into the course of the participants is critical,” Dr. Sillanpää said.
It’s not clear if higher levels of brain aging are affecting the lives of participants, he said. “No one in the cohort has a diagnosed dementia at present, but going forward it will be important to pay close attention to the day-to-day functional status of participants.”
The mechanisms that may cause more brain aging in epilepsy aren’t known. However, “the CDC has shown through population-based investigations that people with epilepsy as a group may be more socially isolated, more physically inactive, and may harbor other lifestyle issues that we now know to be counterproductive to successful cognitive and brain aging in the general population,” Dr. Sillanpää said. “These factors need to be examined in depth in aging persons with epilepsy to gain a sound understanding of the risk and resilience factors that are most important so that people with epilepsy can act accordingly.”
The researchers also report that in patients with epilepsy, there’s evidence of a link between hypertension and hippocampal atrophy. They reported trends toward links between obesity and ischemic disease and between type 2 diabetes and hippocampal atrophy.
Going forward, “the findings may be helpful in the treatment and counseling of patients with epilepsy and especially advocating for those health and lifestyle practices that may be beneficial to long-term courses,” Dr. Sillanpää said. As for the study cohort, he said, researchers plan to continue monitoring them to track their long-term outcomes and any development of neurological disorders such as Alzheimer’s disease.
This work was funded by CURE Epilepsy, the National Governmental Research Grant, and the Pro Humanitate Foundation Grant. The study authors report no disclosures.
FROM AES 2021
FIB-4 could ID liver risk in primary care
Fibrosis-4 index (FIB-4) scores are strongly associated with severe liver disease outcomes in a primary care population, both in patients with known chronic liver disease and those without known CLD. The result could help identify patients with CLD before their condition becomes severe.
FIB-4 has previously shown utility in predicting the risk of advanced fibrosis in patients with viral hepatitis B and C, nonalcoholic fatty liver disease (NAFLD), nonalcoholic steatohepatitis (NASH), and alcohol-related liver disease.
“This is really important in primary care because FIB-4 is easy to calculate. Its inputs are accessible, and it is inexpensive, often taking advantage of labs that we’ve ordered anyway. And if we can use it to find advanced fibrosis, it will be critically important because we know that advanced fibrosis is associated with severe liver outcomes – these are going to be patients that we need to make sure are in touch with our hepatology colleagues,” said Andrew Schreiner, MD, during a presentation of the results at the annual meeting of the American Association for the Study of Liver Diseases. Dr. Schreiner is general internist at the Medical University of South Carolina, Charleston.
He also noted that FIB-4 is playing an important role in the assessment of NAFLD and NASH. Many newer algorithms to manage NAFLD in the primary care setting rely on FIB-4, but that application is limited because NAFLD is underdiagnosed according to administrative database studies, which found rates of about 2%-5% despite the fact that estimates put it at having a prevalence of 25%-30% in the U.S. population.
To determine if FIB-4 scores could assist in identifying primary care patients at risk of severe outcomes, including cirrhosis, hepatocellular carcinoma, and liver transplant, the researchers conducted a retrospective analysis of primary care electronic health care data from 20,556 patients between 2007 and 2018 who were seen at their institution. Participants had ALT and AST values less than 500 IU/L, as well as a platelet count within two months preceding or on the day of the liver enzyme tests. They excluded individuals with known chronic or severe liver disease.
65% of patients were female, 45% were Black, and the mean BMI was 29.8 kg/m2. 64% of participants were ranked as low risk (FIB-4 ≤1.3), 29% with undetermined risk (1.3-2.67), and 7% with high risk (>2.67).
The population had more liver risk than expected. “[It is] a distribution that certainly may have more high risk and indeterminant risks than we would have anticipated, but we have seen this in external studies,” said Dr. Schreiner.
Over a mean follow-up period of 8.2 years, 11% were diagnosed with CLD: 2.3% developed NAFLD, 8.2% another CLD, and 0.5% had NAFLD and another CLD. About 4% developed a severe CLD. A severe liver outcome occurred in 2.2% of those who had been classified as FIB-4 low risk, 4.2% classified as indeterminate risk, and 20.8% of those classified as high risk.
“Troublingly,” said Dr. Schreiner, 49% of those who went on to develop a severe liver outcome had no CLD diagnosis before it occurred. “This is a tremendous opportunity to improve diagnosis in this setting.”
After adjustment for race, gender, marital status, smoking history, BMI, and various comorbidities, the researchers found a higher risk of severe liver disease associated with indeterminate FIB-4 risk score (hazard ratio, 1.62; 95% confidence interval, 1.36-1.92) and a high FIB-4 risk score (HR, 6.64; 95% CI, 5.58-7.90), compared with those with a low FIB-4 risk score. The same was true for individual liver diseases, including NAFLD (indeterminate HR, 1.88; 95% CI, 0.99-3.60; high HR, 7.32; 95% CI, 3.44-15.58), other liver diagnosis (indeterminate HR, 2.65; 95% CI, 1.93-3.63; high HR, 11.39; 95% CI, 8.53-15.20), and NAFLD plus another liver disease (intermediate HR, 2.53; 95% CI, 0.79-8.12; high HR, 6.89; 95% CI, 1.82-26.14).
Dr. Schreiner conceded that the study may not be generalizable, since FIB-4 was not designed for use in general populations, and it was conducted at a single center.
During the question-and-answer session after the talk, Dr. Schreiner was asked if the majority of the 49% who had a severe liver outcome without previous liver disease had NAFLD. He said that was the team’s hypothesis, and they are in the process of examining that data, but a significant number appear to be alcohol related. “For us in the primary care setting, it’s just another opportunity to emphasize that we have to do a better job getting exposure histories, and alcohol histories in particular, and finding ways to document those in ways that we can make diagnoses for patients and for our hepatology colleagues,” said Dr. Schreiner.
Comoderator Kathleen Corey, MD, asked Dr. Schreiner if he had any concerns about false positives from FIB-4 screening, and whether that could lead to overtreatment. “We’ve seen other screening tests leading to patient distress and overutilization of resources. How do you think we might be able to mitigate that?” asked Dr. Corey, who is an assistant professor of medicine at Harvard Medical School and director of the Fatty Liver Clinic at Massachusetts General Hospital, both in Boston.
Dr. Schreiner underscored the need for more physician education about FIB-4, both its potential and its pitfalls, since many primary care providers don’t use it or even know about it. “FIB-4 is very popular in the hepatology literature, but in primary care, we don’t talk about it as often. So I think educational efforts about its possible utility, about some of the drawbacks, or some of the things that might lead to inappropriately positive results – like advanced age, for those of us who see patients 60 and older. Those are really important considerations both for the patient and the provider for management of expectations and concerns. I’m worried too about application in our younger cohorts. The explosion of NAFLD in adolescence, and the likelihood that we might get a false negative in maybe a 28-year-old who might have problematic disease, is a concern as well,” said Dr. Schreiner.
Dr. Schreiner has no relevant financial disclosures. Dr. Corey has been on an advisory committee or review panel for Bristol-Myers Squibb, Novo Nordisk, and Gilead. She has consulted for Novo Nordisk and received research support from BMS, Boehringer Ingelheim, Novartis, and Boehringer Ingelheim.
Fibrosis-4 index (FIB-4) scores are strongly associated with severe liver disease outcomes in a primary care population, both in patients with known chronic liver disease and those without known CLD. The result could help identify patients with CLD before their condition becomes severe.
FIB-4 has previously shown utility in predicting the risk of advanced fibrosis in patients with viral hepatitis B and C, nonalcoholic fatty liver disease (NAFLD), nonalcoholic steatohepatitis (NASH), and alcohol-related liver disease.
“This is really important in primary care because FIB-4 is easy to calculate. Its inputs are accessible, and it is inexpensive, often taking advantage of labs that we’ve ordered anyway. And if we can use it to find advanced fibrosis, it will be critically important because we know that advanced fibrosis is associated with severe liver outcomes – these are going to be patients that we need to make sure are in touch with our hepatology colleagues,” said Andrew Schreiner, MD, during a presentation of the results at the annual meeting of the American Association for the Study of Liver Diseases. Dr. Schreiner is general internist at the Medical University of South Carolina, Charleston.
He also noted that FIB-4 is playing an important role in the assessment of NAFLD and NASH. Many newer algorithms to manage NAFLD in the primary care setting rely on FIB-4, but that application is limited because NAFLD is underdiagnosed according to administrative database studies, which found rates of about 2%-5% despite the fact that estimates put it at having a prevalence of 25%-30% in the U.S. population.
To determine if FIB-4 scores could assist in identifying primary care patients at risk of severe outcomes, including cirrhosis, hepatocellular carcinoma, and liver transplant, the researchers conducted a retrospective analysis of primary care electronic health care data from 20,556 patients between 2007 and 2018 who were seen at their institution. Participants had ALT and AST values less than 500 IU/L, as well as a platelet count within two months preceding or on the day of the liver enzyme tests. They excluded individuals with known chronic or severe liver disease.
65% of patients were female, 45% were Black, and the mean BMI was 29.8 kg/m2. 64% of participants were ranked as low risk (FIB-4 ≤1.3), 29% with undetermined risk (1.3-2.67), and 7% with high risk (>2.67).
The population had more liver risk than expected. “[It is] a distribution that certainly may have more high risk and indeterminant risks than we would have anticipated, but we have seen this in external studies,” said Dr. Schreiner.
Over a mean follow-up period of 8.2 years, 11% were diagnosed with CLD: 2.3% developed NAFLD, 8.2% another CLD, and 0.5% had NAFLD and another CLD. About 4% developed a severe CLD. A severe liver outcome occurred in 2.2% of those who had been classified as FIB-4 low risk, 4.2% classified as indeterminate risk, and 20.8% of those classified as high risk.
“Troublingly,” said Dr. Schreiner, 49% of those who went on to develop a severe liver outcome had no CLD diagnosis before it occurred. “This is a tremendous opportunity to improve diagnosis in this setting.”
After adjustment for race, gender, marital status, smoking history, BMI, and various comorbidities, the researchers found a higher risk of severe liver disease associated with indeterminate FIB-4 risk score (hazard ratio, 1.62; 95% confidence interval, 1.36-1.92) and a high FIB-4 risk score (HR, 6.64; 95% CI, 5.58-7.90), compared with those with a low FIB-4 risk score. The same was true for individual liver diseases, including NAFLD (indeterminate HR, 1.88; 95% CI, 0.99-3.60; high HR, 7.32; 95% CI, 3.44-15.58), other liver diagnosis (indeterminate HR, 2.65; 95% CI, 1.93-3.63; high HR, 11.39; 95% CI, 8.53-15.20), and NAFLD plus another liver disease (intermediate HR, 2.53; 95% CI, 0.79-8.12; high HR, 6.89; 95% CI, 1.82-26.14).
Dr. Schreiner conceded that the study may not be generalizable, since FIB-4 was not designed for use in general populations, and it was conducted at a single center.
During the question-and-answer session after the talk, Dr. Schreiner was asked if the majority of the 49% who had a severe liver outcome without previous liver disease had NAFLD. He said that was the team’s hypothesis, and they are in the process of examining that data, but a significant number appear to be alcohol related. “For us in the primary care setting, it’s just another opportunity to emphasize that we have to do a better job getting exposure histories, and alcohol histories in particular, and finding ways to document those in ways that we can make diagnoses for patients and for our hepatology colleagues,” said Dr. Schreiner.
Comoderator Kathleen Corey, MD, asked Dr. Schreiner if he had any concerns about false positives from FIB-4 screening, and whether that could lead to overtreatment. “We’ve seen other screening tests leading to patient distress and overutilization of resources. How do you think we might be able to mitigate that?” asked Dr. Corey, who is an assistant professor of medicine at Harvard Medical School and director of the Fatty Liver Clinic at Massachusetts General Hospital, both in Boston.
Dr. Schreiner underscored the need for more physician education about FIB-4, both its potential and its pitfalls, since many primary care providers don’t use it or even know about it. “FIB-4 is very popular in the hepatology literature, but in primary care, we don’t talk about it as often. So I think educational efforts about its possible utility, about some of the drawbacks, or some of the things that might lead to inappropriately positive results – like advanced age, for those of us who see patients 60 and older. Those are really important considerations both for the patient and the provider for management of expectations and concerns. I’m worried too about application in our younger cohorts. The explosion of NAFLD in adolescence, and the likelihood that we might get a false negative in maybe a 28-year-old who might have problematic disease, is a concern as well,” said Dr. Schreiner.
Dr. Schreiner has no relevant financial disclosures. Dr. Corey has been on an advisory committee or review panel for Bristol-Myers Squibb, Novo Nordisk, and Gilead. She has consulted for Novo Nordisk and received research support from BMS, Boehringer Ingelheim, Novartis, and Boehringer Ingelheim.
Fibrosis-4 index (FIB-4) scores are strongly associated with severe liver disease outcomes in a primary care population, both in patients with known chronic liver disease and those without known CLD. The result could help identify patients with CLD before their condition becomes severe.
FIB-4 has previously shown utility in predicting the risk of advanced fibrosis in patients with viral hepatitis B and C, nonalcoholic fatty liver disease (NAFLD), nonalcoholic steatohepatitis (NASH), and alcohol-related liver disease.
“This is really important in primary care because FIB-4 is easy to calculate. Its inputs are accessible, and it is inexpensive, often taking advantage of labs that we’ve ordered anyway. And if we can use it to find advanced fibrosis, it will be critically important because we know that advanced fibrosis is associated with severe liver outcomes – these are going to be patients that we need to make sure are in touch with our hepatology colleagues,” said Andrew Schreiner, MD, during a presentation of the results at the annual meeting of the American Association for the Study of Liver Diseases. Dr. Schreiner is general internist at the Medical University of South Carolina, Charleston.
He also noted that FIB-4 is playing an important role in the assessment of NAFLD and NASH. Many newer algorithms to manage NAFLD in the primary care setting rely on FIB-4, but that application is limited because NAFLD is underdiagnosed according to administrative database studies, which found rates of about 2%-5% despite the fact that estimates put it at having a prevalence of 25%-30% in the U.S. population.
To determine if FIB-4 scores could assist in identifying primary care patients at risk of severe outcomes, including cirrhosis, hepatocellular carcinoma, and liver transplant, the researchers conducted a retrospective analysis of primary care electronic health care data from 20,556 patients between 2007 and 2018 who were seen at their institution. Participants had ALT and AST values less than 500 IU/L, as well as a platelet count within two months preceding or on the day of the liver enzyme tests. They excluded individuals with known chronic or severe liver disease.
65% of patients were female, 45% were Black, and the mean BMI was 29.8 kg/m2. 64% of participants were ranked as low risk (FIB-4 ≤1.3), 29% with undetermined risk (1.3-2.67), and 7% with high risk (>2.67).
The population had more liver risk than expected. “[It is] a distribution that certainly may have more high risk and indeterminant risks than we would have anticipated, but we have seen this in external studies,” said Dr. Schreiner.
Over a mean follow-up period of 8.2 years, 11% were diagnosed with CLD: 2.3% developed NAFLD, 8.2% another CLD, and 0.5% had NAFLD and another CLD. About 4% developed a severe CLD. A severe liver outcome occurred in 2.2% of those who had been classified as FIB-4 low risk, 4.2% classified as indeterminate risk, and 20.8% of those classified as high risk.
“Troublingly,” said Dr. Schreiner, 49% of those who went on to develop a severe liver outcome had no CLD diagnosis before it occurred. “This is a tremendous opportunity to improve diagnosis in this setting.”
After adjustment for race, gender, marital status, smoking history, BMI, and various comorbidities, the researchers found a higher risk of severe liver disease associated with indeterminate FIB-4 risk score (hazard ratio, 1.62; 95% confidence interval, 1.36-1.92) and a high FIB-4 risk score (HR, 6.64; 95% CI, 5.58-7.90), compared with those with a low FIB-4 risk score. The same was true for individual liver diseases, including NAFLD (indeterminate HR, 1.88; 95% CI, 0.99-3.60; high HR, 7.32; 95% CI, 3.44-15.58), other liver diagnosis (indeterminate HR, 2.65; 95% CI, 1.93-3.63; high HR, 11.39; 95% CI, 8.53-15.20), and NAFLD plus another liver disease (intermediate HR, 2.53; 95% CI, 0.79-8.12; high HR, 6.89; 95% CI, 1.82-26.14).
Dr. Schreiner conceded that the study may not be generalizable, since FIB-4 was not designed for use in general populations, and it was conducted at a single center.
During the question-and-answer session after the talk, Dr. Schreiner was asked if the majority of the 49% who had a severe liver outcome without previous liver disease had NAFLD. He said that was the team’s hypothesis, and they are in the process of examining that data, but a significant number appear to be alcohol related. “For us in the primary care setting, it’s just another opportunity to emphasize that we have to do a better job getting exposure histories, and alcohol histories in particular, and finding ways to document those in ways that we can make diagnoses for patients and for our hepatology colleagues,” said Dr. Schreiner.
Comoderator Kathleen Corey, MD, asked Dr. Schreiner if he had any concerns about false positives from FIB-4 screening, and whether that could lead to overtreatment. “We’ve seen other screening tests leading to patient distress and overutilization of resources. How do you think we might be able to mitigate that?” asked Dr. Corey, who is an assistant professor of medicine at Harvard Medical School and director of the Fatty Liver Clinic at Massachusetts General Hospital, both in Boston.
Dr. Schreiner underscored the need for more physician education about FIB-4, both its potential and its pitfalls, since many primary care providers don’t use it or even know about it. “FIB-4 is very popular in the hepatology literature, but in primary care, we don’t talk about it as often. So I think educational efforts about its possible utility, about some of the drawbacks, or some of the things that might lead to inappropriately positive results – like advanced age, for those of us who see patients 60 and older. Those are really important considerations both for the patient and the provider for management of expectations and concerns. I’m worried too about application in our younger cohorts. The explosion of NAFLD in adolescence, and the likelihood that we might get a false negative in maybe a 28-year-old who might have problematic disease, is a concern as well,” said Dr. Schreiner.
Dr. Schreiner has no relevant financial disclosures. Dr. Corey has been on an advisory committee or review panel for Bristol-Myers Squibb, Novo Nordisk, and Gilead. She has consulted for Novo Nordisk and received research support from BMS, Boehringer Ingelheim, Novartis, and Boehringer Ingelheim.
FROM THE LIVER MEETING
Metformin does not improve outcomes in early breast cancer
In the primary analysis, the addition of metformin to standard therapy in moderate/high-risk hormone receptor positive or negative breast cancer did not improve invasive disease–free survival (IDFS), overall survival, or other breast outcomes, explained lead author Pamela J. Goodwin, MD, FRCPC, professor of medicine at the University of Toronto. “Metformin should not be used as breast cancer treatment in this population.”
However, an exploratory analysis suggested that metformin may have a beneficial effect in women with HER2-positive breast cancer, Dr. Goodwin noted.
In this subset, IDFS was improved in patients who received metformin (hazard ratio, 0.64; P = .03), as was overall survival (HR, 0.53; P = .04).
The findings were presented at the San Antonio Breast Cancer Symposium.
“This trial arose from the observation that obesity is associated with poor breast cancer outcomes, and insulin levels are higher in obesity and may be more strongly associated with breast cancer outcomes than obesity,” said Dr. Goodwin.
Metformin was used because of its ability to promote modest weight loss and lower insulin by about 15%-20% in nondiabetic breast cancer survivors. It has also shown anticancer effects in preclinical studies. “In some window of opportunity neoadjuvant studies, it has been shown to reduce Ki67 in breast cancer cells,” she said. “And in preclinical in vitro and in vivo research, it slows growth of breast cancer.”
In addition, emerging evidence from observational studies suggests that the use of metformin to treat diabetes in breast cancer patients may be associated with better outcomes, strengthening the rationale for the study.
The negative results in breast cancer follow recent reports of negative findings in lung cancer, when metformin was found to be ineffective when used alongside chemotherapy in locally advanced lung cancer, as reported by this news organization.
No benefit seen
Metformin was compared to placebo in the phase 3 CCTG MA.32 trial, conducted in 3,649 patients aged 18-74 years with T1-3 N0-3 M0 breast cancer. All patients were treated with standard therapy and were randomized to receive metformin 850 mg twice daily for 5 years or placebo.
In 2016, “futility was declared in ER/PR-negative patients” after a second interim analysis conducted at 29.6 months’ median follow-up, Dr. Goodwin noted. The intervention was stopped in that group, although blinding and follow-up continued.
After that, the study’s primary analysis focused on the 2,533 ER/PR-positive patients (mean age, 52.7 years; mean body mass index, 28.8; approx. 60% postmenopausal).
Just over half of these patients had T2 tumor stage, and most disease was grade 2 or 3.
In addition, 16.5% (of metformin) and 17.4% (of placebo) patients had HER2-positive disease, with the majority (97%) of all HER2 patients receiving trastuzumab.
There was no difference between the two groups in IDFS events, occurring in 18.5% of patients receiving metformin and 18.3% who received placebo, with most (75.6%) events due to breast cancer (HR, 1.01; P = .92).
There were 131 deaths in the metformin arm and 119 in the placebo arm, with most (75.8%) of the deaths related to breast cancer (HR, 1.10; P = .47).
Other breast cancer outcomes had similar results, including distant disease-free survival (HR, 0.99; P = .94) and breast cancer–free interval (HR, 0.98; P = .87), both of which showed no advantage for metformin.
Possible HER2 advantage
However, the exploratory analysis suggested there may be an advantage for patients with HER2-positive disease, but primarily those who had at least one C allele of a prespecified ATM associated rs11212617 SNP. These patients achieved a higher pathologic complete response rate with metformin than that of those without the allele.
There were 620 patients with HER2-positive disease analyzed, with 99.4% receiving chemotherapy and 96.5% receiving trastuzumab. There were 99 IDFS events, and 47 OS events.
In the entire HER2-positive cohort, patients who received metformin had fewer IDFS events (HR, 0.64; P = .026) compared with the placebo arm. Mortality was lower with metformin (HR for overall survival, 0.53; P = .038).
“Subjects with HER2-positive breast cancer, notably those with at least one C allele of the ATM-associated rs11212617 SNP, experienced improved IDFS and overall survival with metformin,” Dr. Goodwin concluded. “However, no P-value ‘spend’ was allocated to this comparison. As a result, it requires replication in a prospective trial focusing on the HER2-positive population.”
More research?
Stephanie Bernik, MD, chief of breast surgery, Mount Sinai West, and associate professor of breast surgery, Icahn School of Medicine at Mount Sinai, New York, was approached by this news organization for an independent comment.
“It has long been known that obesity, which often correlates with diabetes, increases a woman’s risk of breast cancer,” she said.
“This study tried to show that using a medication that helps control insulin levels, even in those without diabetes, might decrease one’s risk of breast cancer,” she said. “Unfortunately, using metformin had no effect on outcomes in this study, even though it has shown promise in other studies. Perhaps more research needs to be carried out to try to pinpoint which mechanisms of action, if any, might be helpful to combat cancer in those with and without diabetes.”
The study was funded by the Canadian Cancer Trials Group, Cancer Therapy Evaluation Program, Breast Cancer Researcher Foundation, Susan G. Komen for the Cure, Canadian Cancer Society, Apotex, Swiss Cancer Research, and the Canadian Breast Cancer Foundation. Dr. Goodwin has no disclosures.
A version of this article first appeared on Medscape.com.
In the primary analysis, the addition of metformin to standard therapy in moderate/high-risk hormone receptor positive or negative breast cancer did not improve invasive disease–free survival (IDFS), overall survival, or other breast outcomes, explained lead author Pamela J. Goodwin, MD, FRCPC, professor of medicine at the University of Toronto. “Metformin should not be used as breast cancer treatment in this population.”
However, an exploratory analysis suggested that metformin may have a beneficial effect in women with HER2-positive breast cancer, Dr. Goodwin noted.
In this subset, IDFS was improved in patients who received metformin (hazard ratio, 0.64; P = .03), as was overall survival (HR, 0.53; P = .04).
The findings were presented at the San Antonio Breast Cancer Symposium.
“This trial arose from the observation that obesity is associated with poor breast cancer outcomes, and insulin levels are higher in obesity and may be more strongly associated with breast cancer outcomes than obesity,” said Dr. Goodwin.
Metformin was used because of its ability to promote modest weight loss and lower insulin by about 15%-20% in nondiabetic breast cancer survivors. It has also shown anticancer effects in preclinical studies. “In some window of opportunity neoadjuvant studies, it has been shown to reduce Ki67 in breast cancer cells,” she said. “And in preclinical in vitro and in vivo research, it slows growth of breast cancer.”
In addition, emerging evidence from observational studies suggests that the use of metformin to treat diabetes in breast cancer patients may be associated with better outcomes, strengthening the rationale for the study.
The negative results in breast cancer follow recent reports of negative findings in lung cancer, when metformin was found to be ineffective when used alongside chemotherapy in locally advanced lung cancer, as reported by this news organization.
No benefit seen
Metformin was compared to placebo in the phase 3 CCTG MA.32 trial, conducted in 3,649 patients aged 18-74 years with T1-3 N0-3 M0 breast cancer. All patients were treated with standard therapy and were randomized to receive metformin 850 mg twice daily for 5 years or placebo.
In 2016, “futility was declared in ER/PR-negative patients” after a second interim analysis conducted at 29.6 months’ median follow-up, Dr. Goodwin noted. The intervention was stopped in that group, although blinding and follow-up continued.
After that, the study’s primary analysis focused on the 2,533 ER/PR-positive patients (mean age, 52.7 years; mean body mass index, 28.8; approx. 60% postmenopausal).
Just over half of these patients had T2 tumor stage, and most disease was grade 2 or 3.
In addition, 16.5% (of metformin) and 17.4% (of placebo) patients had HER2-positive disease, with the majority (97%) of all HER2 patients receiving trastuzumab.
There was no difference between the two groups in IDFS events, occurring in 18.5% of patients receiving metformin and 18.3% who received placebo, with most (75.6%) events due to breast cancer (HR, 1.01; P = .92).
There were 131 deaths in the metformin arm and 119 in the placebo arm, with most (75.8%) of the deaths related to breast cancer (HR, 1.10; P = .47).
Other breast cancer outcomes had similar results, including distant disease-free survival (HR, 0.99; P = .94) and breast cancer–free interval (HR, 0.98; P = .87), both of which showed no advantage for metformin.
Possible HER2 advantage
However, the exploratory analysis suggested there may be an advantage for patients with HER2-positive disease, but primarily those who had at least one C allele of a prespecified ATM associated rs11212617 SNP. These patients achieved a higher pathologic complete response rate with metformin than that of those without the allele.
There were 620 patients with HER2-positive disease analyzed, with 99.4% receiving chemotherapy and 96.5% receiving trastuzumab. There were 99 IDFS events, and 47 OS events.
In the entire HER2-positive cohort, patients who received metformin had fewer IDFS events (HR, 0.64; P = .026) compared with the placebo arm. Mortality was lower with metformin (HR for overall survival, 0.53; P = .038).
“Subjects with HER2-positive breast cancer, notably those with at least one C allele of the ATM-associated rs11212617 SNP, experienced improved IDFS and overall survival with metformin,” Dr. Goodwin concluded. “However, no P-value ‘spend’ was allocated to this comparison. As a result, it requires replication in a prospective trial focusing on the HER2-positive population.”
More research?
Stephanie Bernik, MD, chief of breast surgery, Mount Sinai West, and associate professor of breast surgery, Icahn School of Medicine at Mount Sinai, New York, was approached by this news organization for an independent comment.
“It has long been known that obesity, which often correlates with diabetes, increases a woman’s risk of breast cancer,” she said.
“This study tried to show that using a medication that helps control insulin levels, even in those without diabetes, might decrease one’s risk of breast cancer,” she said. “Unfortunately, using metformin had no effect on outcomes in this study, even though it has shown promise in other studies. Perhaps more research needs to be carried out to try to pinpoint which mechanisms of action, if any, might be helpful to combat cancer in those with and without diabetes.”
The study was funded by the Canadian Cancer Trials Group, Cancer Therapy Evaluation Program, Breast Cancer Researcher Foundation, Susan G. Komen for the Cure, Canadian Cancer Society, Apotex, Swiss Cancer Research, and the Canadian Breast Cancer Foundation. Dr. Goodwin has no disclosures.
A version of this article first appeared on Medscape.com.
In the primary analysis, the addition of metformin to standard therapy in moderate/high-risk hormone receptor positive or negative breast cancer did not improve invasive disease–free survival (IDFS), overall survival, or other breast outcomes, explained lead author Pamela J. Goodwin, MD, FRCPC, professor of medicine at the University of Toronto. “Metformin should not be used as breast cancer treatment in this population.”
However, an exploratory analysis suggested that metformin may have a beneficial effect in women with HER2-positive breast cancer, Dr. Goodwin noted.
In this subset, IDFS was improved in patients who received metformin (hazard ratio, 0.64; P = .03), as was overall survival (HR, 0.53; P = .04).
The findings were presented at the San Antonio Breast Cancer Symposium.
“This trial arose from the observation that obesity is associated with poor breast cancer outcomes, and insulin levels are higher in obesity and may be more strongly associated with breast cancer outcomes than obesity,” said Dr. Goodwin.
Metformin was used because of its ability to promote modest weight loss and lower insulin by about 15%-20% in nondiabetic breast cancer survivors. It has also shown anticancer effects in preclinical studies. “In some window of opportunity neoadjuvant studies, it has been shown to reduce Ki67 in breast cancer cells,” she said. “And in preclinical in vitro and in vivo research, it slows growth of breast cancer.”
In addition, emerging evidence from observational studies suggests that the use of metformin to treat diabetes in breast cancer patients may be associated with better outcomes, strengthening the rationale for the study.
The negative results in breast cancer follow recent reports of negative findings in lung cancer, when metformin was found to be ineffective when used alongside chemotherapy in locally advanced lung cancer, as reported by this news organization.
No benefit seen
Metformin was compared to placebo in the phase 3 CCTG MA.32 trial, conducted in 3,649 patients aged 18-74 years with T1-3 N0-3 M0 breast cancer. All patients were treated with standard therapy and were randomized to receive metformin 850 mg twice daily for 5 years or placebo.
In 2016, “futility was declared in ER/PR-negative patients” after a second interim analysis conducted at 29.6 months’ median follow-up, Dr. Goodwin noted. The intervention was stopped in that group, although blinding and follow-up continued.
After that, the study’s primary analysis focused on the 2,533 ER/PR-positive patients (mean age, 52.7 years; mean body mass index, 28.8; approx. 60% postmenopausal).
Just over half of these patients had T2 tumor stage, and most disease was grade 2 or 3.
In addition, 16.5% (of metformin) and 17.4% (of placebo) patients had HER2-positive disease, with the majority (97%) of all HER2 patients receiving trastuzumab.
There was no difference between the two groups in IDFS events, occurring in 18.5% of patients receiving metformin and 18.3% who received placebo, with most (75.6%) events due to breast cancer (HR, 1.01; P = .92).
There were 131 deaths in the metformin arm and 119 in the placebo arm, with most (75.8%) of the deaths related to breast cancer (HR, 1.10; P = .47).
Other breast cancer outcomes had similar results, including distant disease-free survival (HR, 0.99; P = .94) and breast cancer–free interval (HR, 0.98; P = .87), both of which showed no advantage for metformin.
Possible HER2 advantage
However, the exploratory analysis suggested there may be an advantage for patients with HER2-positive disease, but primarily those who had at least one C allele of a prespecified ATM associated rs11212617 SNP. These patients achieved a higher pathologic complete response rate with metformin than that of those without the allele.
There were 620 patients with HER2-positive disease analyzed, with 99.4% receiving chemotherapy and 96.5% receiving trastuzumab. There were 99 IDFS events, and 47 OS events.
In the entire HER2-positive cohort, patients who received metformin had fewer IDFS events (HR, 0.64; P = .026) compared with the placebo arm. Mortality was lower with metformin (HR for overall survival, 0.53; P = .038).
“Subjects with HER2-positive breast cancer, notably those with at least one C allele of the ATM-associated rs11212617 SNP, experienced improved IDFS and overall survival with metformin,” Dr. Goodwin concluded. “However, no P-value ‘spend’ was allocated to this comparison. As a result, it requires replication in a prospective trial focusing on the HER2-positive population.”
More research?
Stephanie Bernik, MD, chief of breast surgery, Mount Sinai West, and associate professor of breast surgery, Icahn School of Medicine at Mount Sinai, New York, was approached by this news organization for an independent comment.
“It has long been known that obesity, which often correlates with diabetes, increases a woman’s risk of breast cancer,” she said.
“This study tried to show that using a medication that helps control insulin levels, even in those without diabetes, might decrease one’s risk of breast cancer,” she said. “Unfortunately, using metformin had no effect on outcomes in this study, even though it has shown promise in other studies. Perhaps more research needs to be carried out to try to pinpoint which mechanisms of action, if any, might be helpful to combat cancer in those with and without diabetes.”
The study was funded by the Canadian Cancer Trials Group, Cancer Therapy Evaluation Program, Breast Cancer Researcher Foundation, Susan G. Komen for the Cure, Canadian Cancer Society, Apotex, Swiss Cancer Research, and the Canadian Breast Cancer Foundation. Dr. Goodwin has no disclosures.
A version of this article first appeared on Medscape.com.
FROM SABCS 2021
Filler complications involving vascular necrosis, vision changes on the rise
analysis showed.
“The ASDS estimates that 1.6 million soft tissue filler procedures were performed in 2019, a 78% increase from 2012,” presenting author Michelle Xiong, a 4th-year student at Brown University, Providence, R.I., said during a virtual abstract session at the annual meeting of the American Society for Dermatologic Surgery. “The popularity of dermal fillers continues to increase. With that, there is increasing concern of possible associated adverse events. Most concerning are those related to vascular occlusion.”
Under the supervision of senior author Kachiu C. Lee, MD, MPH, of Main Line Center for Laser Surgery in Ardmore, Pa., Ms. Xiong and colleagues analyzed the Food and Drug Administration’s Manufacturer and User Facility Device Experience (MAUDE) database of medical device–related adverse event reports, to better understand and characterize dermal filler-related complications. They limited the analysis to adverse events involving injectable fillers from January 2014 to December 2020 and determined the number of complications by type per year and reviewed reports to identify injection site locations. Next, they used the binomial test to compare the proportion of complication categories from 2014 through 2016 and from 2017 through 2020.
In all, 5,994 reports were identified during the 7-year study period. To evaluate trends over time, the researchers estimated the rate of complications per 100 reports each year. While the absolute number of reports increased over time, the rate of adverse events per 100 reports decreased, suggesting an overall improvement in safety.
When the researchers focused on complications involving vascular occlusion, they found that vascular necrosis accounted for 3.5% of all complications, compared with vision changes (1.5% of all complications), and stroke (0.3% of all complications). When comparing the years 2014-2016 with 2017-2020, there was a significant increase in adverse events involving vascular necrosis (0.9%; P = .018) and vision changes (0.94%; P = .001), but no significant difference in the number of reports of stroke (-0.1%; P = .409). “This highlights that serious complications like necrosis and vision changes have increased over time,” Ms. Xiong said.
Overall, the three most common injection sites involving necrosis and vision changes were the cheek, the nose, and the nasolabial fold. The cheek was the most common site associated with stroke. “These findings are similar to those of previous studies, further emphasizing that the nose, nasolabial fold, and cheek are possibly challenging injection sites,” she said.
“In general, as the face is a highly vascular area with many anastomoses, it’s especially important to be aware of facial anatomy when injecting. In addition to awareness of anatomy, injection techniques can influence vascular complications. Unfortunately, the event narratives in the MAUDE database did not go into detail about the procedural technique.”
Ms. Xiong said that as the popularity of dermal fillers continues to grow, “it’s important for providers to understand the possible adverse events, both to better counsel patients and to improve safety management. The proportion of serious complications such as vascular necrosis and vision changes have increased from 2014 to 2020. This highlights an increased need for training to better understand facial anatomy and to emphasize practice techniques to minimize risk.”
Dr. Lee acknowledged certain limitations of the study, including that “submission of adverse events to the MAUDE database are not verified or standardized,” she told this news organization.
“With the ever-increasing popularity of fillers, it is not surprising that the absolute number of complications is rising, but it is also reassuring to see that the overall ratio of complications per hundred reports is down,” said Lawrence J. Green, MD, clinical professor of dermatology at George Washington University, Washington, who was asked to comment on the study. “I would be curious to know what proportion of filler complications are due to non–core practitioners compared to dermatologists and plastic surgeons.”
The researchers reported having no financial disclosures.
Dr. Green disclosed that he is a speaker, consultant, or investigator for numerous pharmaceutical companies.
analysis showed.
“The ASDS estimates that 1.6 million soft tissue filler procedures were performed in 2019, a 78% increase from 2012,” presenting author Michelle Xiong, a 4th-year student at Brown University, Providence, R.I., said during a virtual abstract session at the annual meeting of the American Society for Dermatologic Surgery. “The popularity of dermal fillers continues to increase. With that, there is increasing concern of possible associated adverse events. Most concerning are those related to vascular occlusion.”
Under the supervision of senior author Kachiu C. Lee, MD, MPH, of Main Line Center for Laser Surgery in Ardmore, Pa., Ms. Xiong and colleagues analyzed the Food and Drug Administration’s Manufacturer and User Facility Device Experience (MAUDE) database of medical device–related adverse event reports, to better understand and characterize dermal filler-related complications. They limited the analysis to adverse events involving injectable fillers from January 2014 to December 2020 and determined the number of complications by type per year and reviewed reports to identify injection site locations. Next, they used the binomial test to compare the proportion of complication categories from 2014 through 2016 and from 2017 through 2020.
In all, 5,994 reports were identified during the 7-year study period. To evaluate trends over time, the researchers estimated the rate of complications per 100 reports each year. While the absolute number of reports increased over time, the rate of adverse events per 100 reports decreased, suggesting an overall improvement in safety.
When the researchers focused on complications involving vascular occlusion, they found that vascular necrosis accounted for 3.5% of all complications, compared with vision changes (1.5% of all complications), and stroke (0.3% of all complications). When comparing the years 2014-2016 with 2017-2020, there was a significant increase in adverse events involving vascular necrosis (0.9%; P = .018) and vision changes (0.94%; P = .001), but no significant difference in the number of reports of stroke (-0.1%; P = .409). “This highlights that serious complications like necrosis and vision changes have increased over time,” Ms. Xiong said.
Overall, the three most common injection sites involving necrosis and vision changes were the cheek, the nose, and the nasolabial fold. The cheek was the most common site associated with stroke. “These findings are similar to those of previous studies, further emphasizing that the nose, nasolabial fold, and cheek are possibly challenging injection sites,” she said.
“In general, as the face is a highly vascular area with many anastomoses, it’s especially important to be aware of facial anatomy when injecting. In addition to awareness of anatomy, injection techniques can influence vascular complications. Unfortunately, the event narratives in the MAUDE database did not go into detail about the procedural technique.”
Ms. Xiong said that as the popularity of dermal fillers continues to grow, “it’s important for providers to understand the possible adverse events, both to better counsel patients and to improve safety management. The proportion of serious complications such as vascular necrosis and vision changes have increased from 2014 to 2020. This highlights an increased need for training to better understand facial anatomy and to emphasize practice techniques to minimize risk.”
Dr. Lee acknowledged certain limitations of the study, including that “submission of adverse events to the MAUDE database are not verified or standardized,” she told this news organization.
“With the ever-increasing popularity of fillers, it is not surprising that the absolute number of complications is rising, but it is also reassuring to see that the overall ratio of complications per hundred reports is down,” said Lawrence J. Green, MD, clinical professor of dermatology at George Washington University, Washington, who was asked to comment on the study. “I would be curious to know what proportion of filler complications are due to non–core practitioners compared to dermatologists and plastic surgeons.”
The researchers reported having no financial disclosures.
Dr. Green disclosed that he is a speaker, consultant, or investigator for numerous pharmaceutical companies.
analysis showed.
“The ASDS estimates that 1.6 million soft tissue filler procedures were performed in 2019, a 78% increase from 2012,” presenting author Michelle Xiong, a 4th-year student at Brown University, Providence, R.I., said during a virtual abstract session at the annual meeting of the American Society for Dermatologic Surgery. “The popularity of dermal fillers continues to increase. With that, there is increasing concern of possible associated adverse events. Most concerning are those related to vascular occlusion.”
Under the supervision of senior author Kachiu C. Lee, MD, MPH, of Main Line Center for Laser Surgery in Ardmore, Pa., Ms. Xiong and colleagues analyzed the Food and Drug Administration’s Manufacturer and User Facility Device Experience (MAUDE) database of medical device–related adverse event reports, to better understand and characterize dermal filler-related complications. They limited the analysis to adverse events involving injectable fillers from January 2014 to December 2020 and determined the number of complications by type per year and reviewed reports to identify injection site locations. Next, they used the binomial test to compare the proportion of complication categories from 2014 through 2016 and from 2017 through 2020.
In all, 5,994 reports were identified during the 7-year study period. To evaluate trends over time, the researchers estimated the rate of complications per 100 reports each year. While the absolute number of reports increased over time, the rate of adverse events per 100 reports decreased, suggesting an overall improvement in safety.
When the researchers focused on complications involving vascular occlusion, they found that vascular necrosis accounted for 3.5% of all complications, compared with vision changes (1.5% of all complications), and stroke (0.3% of all complications). When comparing the years 2014-2016 with 2017-2020, there was a significant increase in adverse events involving vascular necrosis (0.9%; P = .018) and vision changes (0.94%; P = .001), but no significant difference in the number of reports of stroke (-0.1%; P = .409). “This highlights that serious complications like necrosis and vision changes have increased over time,” Ms. Xiong said.
Overall, the three most common injection sites involving necrosis and vision changes were the cheek, the nose, and the nasolabial fold. The cheek was the most common site associated with stroke. “These findings are similar to those of previous studies, further emphasizing that the nose, nasolabial fold, and cheek are possibly challenging injection sites,” she said.
“In general, as the face is a highly vascular area with many anastomoses, it’s especially important to be aware of facial anatomy when injecting. In addition to awareness of anatomy, injection techniques can influence vascular complications. Unfortunately, the event narratives in the MAUDE database did not go into detail about the procedural technique.”
Ms. Xiong said that as the popularity of dermal fillers continues to grow, “it’s important for providers to understand the possible adverse events, both to better counsel patients and to improve safety management. The proportion of serious complications such as vascular necrosis and vision changes have increased from 2014 to 2020. This highlights an increased need for training to better understand facial anatomy and to emphasize practice techniques to minimize risk.”
Dr. Lee acknowledged certain limitations of the study, including that “submission of adverse events to the MAUDE database are not verified or standardized,” she told this news organization.
“With the ever-increasing popularity of fillers, it is not surprising that the absolute number of complications is rising, but it is also reassuring to see that the overall ratio of complications per hundred reports is down,” said Lawrence J. Green, MD, clinical professor of dermatology at George Washington University, Washington, who was asked to comment on the study. “I would be curious to know what proportion of filler complications are due to non–core practitioners compared to dermatologists and plastic surgeons.”
The researchers reported having no financial disclosures.
Dr. Green disclosed that he is a speaker, consultant, or investigator for numerous pharmaceutical companies.
FROM ASDS 2021
Updated ACG GERD guideline addresses increased scrutiny of PPI therapy
For the first time since 2013, the American College of Gastroenterology has issued updated evidence-based recommendations and practical guidance on the evaluation and management of gastroesophageal reflux disease (GERD), including pharmacologic, lifestyle, surgical, and endoscopic management.
Over the past 8 years, understanding of the varied presentations of GERD, enhancements in diagnostic testing, and approach to patient management have evolved, and there has been closer scrutiny of proton pump inhibitor (PPI) therapy and its potential side effects, the guideline authors said.
While PPIs remain the “medical treatment of choice” for GERD, multiple studies have raised questions about adverse events, they noted.
“We now know a lot more about PPI adverse events in the sense that we have another 8 years of experience” since the 2013 guideline, first author Philip O. Katz, MD, professor of medicine and director of motility laboratories at Weill Cornell Medicine, New York, added in an interview.
This update emphasizes the importance of making an accurate diagnosis and recommends PPI therapy “when patients really have GERD and being careful to use the lowest effective dose,” Dr. Katz said.
The guideline was published online Nov. 22, 2021, in the American Journal of Gastroenterology.
Benefits outweigh risks
The guideline suggests telling patients that PPIs are the most effective medical treatment for GERD.
Some studies have identified an association between the long-term use of PPIs and the development of several adverse conditions, including intestinal infections, pneumonia, stomach cancer, osteoporosis-related bone fractures, chronic kidney disease, deficiencies of certain vitamins and minerals, heart attacks, strokes, dementia, and early death.
Clinicians should emphasize, however, that these studies have flaws, are not considered definitive, and do not establish a cause-and-effect relationship between PPIs and the adverse conditions.
They should also emphasize to patients that high-quality studies have found that PPIs do not significantly raise the risk of any of these conditions except intestinal infections.
Patients should be told that, for the treatment of GERD, “gastroenterologists generally agree that the well-established benefits of PPIs far outweigh their theoretical risks.”
“Everything in this guideline makes sense,” Scott Gabbard, MD, gastroenterologist and section head, Center for Neurogastroenterology and Motility, Cleveland Clinic, who wasn’t involved in the guideline development, said in an interview.
“A PPI trial for anyone with typical GERD symptoms and having those who respond taper to the lowest effective dose is still the first line for anyone with GERD,” Dr. Gabbard said.
Making the diagnosis
As there is currently no gold standard for the diagnosis of GERD, diagnosis is based on a combination of symptoms, endoscopic evaluation of esophageal mucosa, reflux monitoring, and response to therapeutic intervention, the guideline says.
For patients with classic symptoms of heartburn and regurgitation with no alarm symptoms, the authors recommend an 8-week trial of empiric once-daily PPIs before a meal. If the patient responds, the guideline recommends attempting to discontinue the medication.
The guideline recommends diagnostic endoscopy after PPIs are stopped for 2-4 weeks in patients whose classic symptoms fail to respond adequately to the 8-week empiric PPI trial or in those whose symptoms return when PPIs are discontinued.
For patients with chest pain but no heartburn who have undergone an adequate evaluation to exclude heart disease, the guideline advises objective testing for GERD (endoscopy and/or reflux monitoring).
The use of barium swallow solely as a diagnostic test for GERD is not recommended.
Endoscopy should be the first test for evaluating patients presenting with dysphagia or other alarm symptoms, such as weight loss and gastrointestinal bleeding, as well as for patients with risk factors for Barrett’s esophagus.
For patients in whom the diagnosis of GERD is suspected but unclear and endoscopy fails to show objective evidence of GERD, the guidelines advise reflux monitoring off therapy to establish the diagnosis.
The guideline recommends against reflux monitoring off therapy solely as a diagnostic test for GERD in patients with known endoscopic evidence of Los Angeles grade C or D reflux esophagitis or in patients with long-segment Barrett’s esophagus.
High-resolution manometry solely as a diagnostic test for GERD is also not recommended.
Medical management of GERD
Recommendations for medical management of GERD include weight loss in patients who are overweight or obese, avoidance of meals within 2-3 hours of bedtime, avoidance of tobacco products and “trigger foods,” and elevation of the head of the bed for nighttime symptoms.
Treatment with a PPI is recommended over histamine2-receptor antagonists for healing and maintenance of healing of eosinophilic esophagitis. Taking a PPI 30-60 minutes prior to a meal rather than at bedtime is recommended.
“Use of the lowest effective PPI dose is recommended and logical but must be individualized,” the guideline states.
There is “conceptual rationale” for a trial of switching PPIs for patients who don’t respond to one PPI. However, switching more than once to another PPI “cannot be supported,” the guideline says.
Dr. Gabbard said the advice about switching PPIs in nonresponders is particularly helpful.
“In clinical practice, I see patients who try one PPI, and if it doesn’t work, their doctor puts them on another PPI, then another and another, until they get through five PPIs and gotten nowhere,” he said in an interview.
“This new guideline is very helpful in saying, if a patient has GERD symptoms that do not respond to a PPI, you can do one switch. But, if that doesn’t work, have a low threshold to perform pH testing to determine if the patient truly has reflux or not,” Dr. Gabbard said.
“Some studies have suggested that up to 75% of PPI nonresponders actually don’t have reflux. They have functional heartburn, which is not reflux and is treated without PPIs,” he noted.
One area of controversy relates to abrupt PPI discontinuation and potential rebound acid hypersecretion, resulting in increased reflux symptoms. While this has been found in healthy control patients, strong evidence for an increase in symptoms after abrupt PPI withdrawal is lacking.
The guideline makes “no definitive recommendation as to whether weaning or stopping PPIs cold turkey is a better approach, due to a lack of evidence,” Dr. Katz said in an interview.
For patients with GERD without erosive esophagitis or Barrett’s esophagus and whose symptoms resolve with PPI therapy, the guideline says an attempt should be made to discontinue PPI therapy or to switch to on-demand therapy in which a PPI is taken only when symptoms occur and is stopped when they are relieved.
For patients with Los Angeles grade C or D esophagitis, the recommendation is for maintenance PPI therapy indefinitely or antireflux surgery.
Dr. Gabbard said it’s “nice to have in writing from the ACG that patients with erosive esophagitis or Barrett’s esophagus – those who truly need a PPI – should be on indefinite PPI therapy, because the benefit of a PPI far outweighs the theoretical risks.”
The research had no financial support. Dr. Katz has served as consultant for Phathom Pharma and Medtronic, has received research support from Diversatek and royalties from UpToDate, and serves on the Medscape Gastroenterology advisory board. Dr. Gabbard disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
For the first time since 2013, the American College of Gastroenterology has issued updated evidence-based recommendations and practical guidance on the evaluation and management of gastroesophageal reflux disease (GERD), including pharmacologic, lifestyle, surgical, and endoscopic management.
Over the past 8 years, understanding of the varied presentations of GERD, enhancements in diagnostic testing, and approach to patient management have evolved, and there has been closer scrutiny of proton pump inhibitor (PPI) therapy and its potential side effects, the guideline authors said.
While PPIs remain the “medical treatment of choice” for GERD, multiple studies have raised questions about adverse events, they noted.
“We now know a lot more about PPI adverse events in the sense that we have another 8 years of experience” since the 2013 guideline, first author Philip O. Katz, MD, professor of medicine and director of motility laboratories at Weill Cornell Medicine, New York, added in an interview.
This update emphasizes the importance of making an accurate diagnosis and recommends PPI therapy “when patients really have GERD and being careful to use the lowest effective dose,” Dr. Katz said.
The guideline was published online Nov. 22, 2021, in the American Journal of Gastroenterology.
Benefits outweigh risks
The guideline suggests telling patients that PPIs are the most effective medical treatment for GERD.
Some studies have identified an association between the long-term use of PPIs and the development of several adverse conditions, including intestinal infections, pneumonia, stomach cancer, osteoporosis-related bone fractures, chronic kidney disease, deficiencies of certain vitamins and minerals, heart attacks, strokes, dementia, and early death.
Clinicians should emphasize, however, that these studies have flaws, are not considered definitive, and do not establish a cause-and-effect relationship between PPIs and the adverse conditions.
They should also emphasize to patients that high-quality studies have found that PPIs do not significantly raise the risk of any of these conditions except intestinal infections.
Patients should be told that, for the treatment of GERD, “gastroenterologists generally agree that the well-established benefits of PPIs far outweigh their theoretical risks.”
“Everything in this guideline makes sense,” Scott Gabbard, MD, gastroenterologist and section head, Center for Neurogastroenterology and Motility, Cleveland Clinic, who wasn’t involved in the guideline development, said in an interview.
“A PPI trial for anyone with typical GERD symptoms and having those who respond taper to the lowest effective dose is still the first line for anyone with GERD,” Dr. Gabbard said.
Making the diagnosis
As there is currently no gold standard for the diagnosis of GERD, diagnosis is based on a combination of symptoms, endoscopic evaluation of esophageal mucosa, reflux monitoring, and response to therapeutic intervention, the guideline says.
For patients with classic symptoms of heartburn and regurgitation with no alarm symptoms, the authors recommend an 8-week trial of empiric once-daily PPIs before a meal. If the patient responds, the guideline recommends attempting to discontinue the medication.
The guideline recommends diagnostic endoscopy after PPIs are stopped for 2-4 weeks in patients whose classic symptoms fail to respond adequately to the 8-week empiric PPI trial or in those whose symptoms return when PPIs are discontinued.
For patients with chest pain but no heartburn who have undergone an adequate evaluation to exclude heart disease, the guideline advises objective testing for GERD (endoscopy and/or reflux monitoring).
The use of barium swallow solely as a diagnostic test for GERD is not recommended.
Endoscopy should be the first test for evaluating patients presenting with dysphagia or other alarm symptoms, such as weight loss and gastrointestinal bleeding, as well as for patients with risk factors for Barrett’s esophagus.
For patients in whom the diagnosis of GERD is suspected but unclear and endoscopy fails to show objective evidence of GERD, the guidelines advise reflux monitoring off therapy to establish the diagnosis.
The guideline recommends against reflux monitoring off therapy solely as a diagnostic test for GERD in patients with known endoscopic evidence of Los Angeles grade C or D reflux esophagitis or in patients with long-segment Barrett’s esophagus.
High-resolution manometry solely as a diagnostic test for GERD is also not recommended.
Medical management of GERD
Recommendations for medical management of GERD include weight loss in patients who are overweight or obese, avoidance of meals within 2-3 hours of bedtime, avoidance of tobacco products and “trigger foods,” and elevation of the head of the bed for nighttime symptoms.
Treatment with a PPI is recommended over histamine2-receptor antagonists for healing and maintenance of healing of eosinophilic esophagitis. Taking a PPI 30-60 minutes prior to a meal rather than at bedtime is recommended.
“Use of the lowest effective PPI dose is recommended and logical but must be individualized,” the guideline states.
There is “conceptual rationale” for a trial of switching PPIs for patients who don’t respond to one PPI. However, switching more than once to another PPI “cannot be supported,” the guideline says.
Dr. Gabbard said the advice about switching PPIs in nonresponders is particularly helpful.
“In clinical practice, I see patients who try one PPI, and if it doesn’t work, their doctor puts them on another PPI, then another and another, until they get through five PPIs and gotten nowhere,” he said in an interview.
“This new guideline is very helpful in saying, if a patient has GERD symptoms that do not respond to a PPI, you can do one switch. But, if that doesn’t work, have a low threshold to perform pH testing to determine if the patient truly has reflux or not,” Dr. Gabbard said.
“Some studies have suggested that up to 75% of PPI nonresponders actually don’t have reflux. They have functional heartburn, which is not reflux and is treated without PPIs,” he noted.
One area of controversy relates to abrupt PPI discontinuation and potential rebound acid hypersecretion, resulting in increased reflux symptoms. While this has been found in healthy control patients, strong evidence for an increase in symptoms after abrupt PPI withdrawal is lacking.
The guideline makes “no definitive recommendation as to whether weaning or stopping PPIs cold turkey is a better approach, due to a lack of evidence,” Dr. Katz said in an interview.
For patients with GERD without erosive esophagitis or Barrett’s esophagus and whose symptoms resolve with PPI therapy, the guideline says an attempt should be made to discontinue PPI therapy or to switch to on-demand therapy in which a PPI is taken only when symptoms occur and is stopped when they are relieved.
For patients with Los Angeles grade C or D esophagitis, the recommendation is for maintenance PPI therapy indefinitely or antireflux surgery.
Dr. Gabbard said it’s “nice to have in writing from the ACG that patients with erosive esophagitis or Barrett’s esophagus – those who truly need a PPI – should be on indefinite PPI therapy, because the benefit of a PPI far outweighs the theoretical risks.”
The research had no financial support. Dr. Katz has served as consultant for Phathom Pharma and Medtronic, has received research support from Diversatek and royalties from UpToDate, and serves on the Medscape Gastroenterology advisory board. Dr. Gabbard disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
For the first time since 2013, the American College of Gastroenterology has issued updated evidence-based recommendations and practical guidance on the evaluation and management of gastroesophageal reflux disease (GERD), including pharmacologic, lifestyle, surgical, and endoscopic management.
Over the past 8 years, understanding of the varied presentations of GERD, enhancements in diagnostic testing, and approach to patient management have evolved, and there has been closer scrutiny of proton pump inhibitor (PPI) therapy and its potential side effects, the guideline authors said.
While PPIs remain the “medical treatment of choice” for GERD, multiple studies have raised questions about adverse events, they noted.
“We now know a lot more about PPI adverse events in the sense that we have another 8 years of experience” since the 2013 guideline, first author Philip O. Katz, MD, professor of medicine and director of motility laboratories at Weill Cornell Medicine, New York, added in an interview.
This update emphasizes the importance of making an accurate diagnosis and recommends PPI therapy “when patients really have GERD and being careful to use the lowest effective dose,” Dr. Katz said.
The guideline was published online Nov. 22, 2021, in the American Journal of Gastroenterology.
Benefits outweigh risks
The guideline suggests telling patients that PPIs are the most effective medical treatment for GERD.
Some studies have identified an association between the long-term use of PPIs and the development of several adverse conditions, including intestinal infections, pneumonia, stomach cancer, osteoporosis-related bone fractures, chronic kidney disease, deficiencies of certain vitamins and minerals, heart attacks, strokes, dementia, and early death.
Clinicians should emphasize, however, that these studies have flaws, are not considered definitive, and do not establish a cause-and-effect relationship between PPIs and the adverse conditions.
They should also emphasize to patients that high-quality studies have found that PPIs do not significantly raise the risk of any of these conditions except intestinal infections.
Patients should be told that, for the treatment of GERD, “gastroenterologists generally agree that the well-established benefits of PPIs far outweigh their theoretical risks.”
“Everything in this guideline makes sense,” Scott Gabbard, MD, gastroenterologist and section head, Center for Neurogastroenterology and Motility, Cleveland Clinic, who wasn’t involved in the guideline development, said in an interview.
“A PPI trial for anyone with typical GERD symptoms and having those who respond taper to the lowest effective dose is still the first line for anyone with GERD,” Dr. Gabbard said.
Making the diagnosis
As there is currently no gold standard for the diagnosis of GERD, diagnosis is based on a combination of symptoms, endoscopic evaluation of esophageal mucosa, reflux monitoring, and response to therapeutic intervention, the guideline says.
For patients with classic symptoms of heartburn and regurgitation with no alarm symptoms, the authors recommend an 8-week trial of empiric once-daily PPIs before a meal. If the patient responds, the guideline recommends attempting to discontinue the medication.
The guideline recommends diagnostic endoscopy after PPIs are stopped for 2-4 weeks in patients whose classic symptoms fail to respond adequately to the 8-week empiric PPI trial or in those whose symptoms return when PPIs are discontinued.
For patients with chest pain but no heartburn who have undergone an adequate evaluation to exclude heart disease, the guideline advises objective testing for GERD (endoscopy and/or reflux monitoring).
The use of barium swallow solely as a diagnostic test for GERD is not recommended.
Endoscopy should be the first test for evaluating patients presenting with dysphagia or other alarm symptoms, such as weight loss and gastrointestinal bleeding, as well as for patients with risk factors for Barrett’s esophagus.
For patients in whom the diagnosis of GERD is suspected but unclear and endoscopy fails to show objective evidence of GERD, the guidelines advise reflux monitoring off therapy to establish the diagnosis.
The guideline recommends against reflux monitoring off therapy solely as a diagnostic test for GERD in patients with known endoscopic evidence of Los Angeles grade C or D reflux esophagitis or in patients with long-segment Barrett’s esophagus.
High-resolution manometry solely as a diagnostic test for GERD is also not recommended.
Medical management of GERD
Recommendations for medical management of GERD include weight loss in patients who are overweight or obese, avoidance of meals within 2-3 hours of bedtime, avoidance of tobacco products and “trigger foods,” and elevation of the head of the bed for nighttime symptoms.
Treatment with a PPI is recommended over histamine2-receptor antagonists for healing and maintenance of healing of eosinophilic esophagitis. Taking a PPI 30-60 minutes prior to a meal rather than at bedtime is recommended.
“Use of the lowest effective PPI dose is recommended and logical but must be individualized,” the guideline states.
There is “conceptual rationale” for a trial of switching PPIs for patients who don’t respond to one PPI. However, switching more than once to another PPI “cannot be supported,” the guideline says.
Dr. Gabbard said the advice about switching PPIs in nonresponders is particularly helpful.
“In clinical practice, I see patients who try one PPI, and if it doesn’t work, their doctor puts them on another PPI, then another and another, until they get through five PPIs and gotten nowhere,” he said in an interview.
“This new guideline is very helpful in saying, if a patient has GERD symptoms that do not respond to a PPI, you can do one switch. But, if that doesn’t work, have a low threshold to perform pH testing to determine if the patient truly has reflux or not,” Dr. Gabbard said.
“Some studies have suggested that up to 75% of PPI nonresponders actually don’t have reflux. They have functional heartburn, which is not reflux and is treated without PPIs,” he noted.
One area of controversy relates to abrupt PPI discontinuation and potential rebound acid hypersecretion, resulting in increased reflux symptoms. While this has been found in healthy control patients, strong evidence for an increase in symptoms after abrupt PPI withdrawal is lacking.
The guideline makes “no definitive recommendation as to whether weaning or stopping PPIs cold turkey is a better approach, due to a lack of evidence,” Dr. Katz said in an interview.
For patients with GERD without erosive esophagitis or Barrett’s esophagus and whose symptoms resolve with PPI therapy, the guideline says an attempt should be made to discontinue PPI therapy or to switch to on-demand therapy in which a PPI is taken only when symptoms occur and is stopped when they are relieved.
For patients with Los Angeles grade C or D esophagitis, the recommendation is for maintenance PPI therapy indefinitely or antireflux surgery.
Dr. Gabbard said it’s “nice to have in writing from the ACG that patients with erosive esophagitis or Barrett’s esophagus – those who truly need a PPI – should be on indefinite PPI therapy, because the benefit of a PPI far outweighs the theoretical risks.”
The research had no financial support. Dr. Katz has served as consultant for Phathom Pharma and Medtronic, has received research support from Diversatek and royalties from UpToDate, and serves on the Medscape Gastroenterology advisory board. Dr. Gabbard disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM THE AMERICAN JOURNAL OF GASTROENTEROLOGY
Supreme Court leaves Texas abortion law in place
In a highly anticipated decision, the U.S. Supreme Court ruled Dec. 10 that the controversial Texas abortion law that restricts the procedure to women pregnant for 6 weeks or less may continue to be enforced, but allowed for state and federal courts to hear challenges to whether it violates the Constitution.
As anti-abortion organizations celebrate and abortion rights groups confer on what the decision could mean for women not only in Texas but across the United States, there is another, bigger implication as well.
The Texas law generated a lot of controversy, in part, because it took an unusual approach. In authorizing essentially anyone across the nation to file a lawsuit against a woman in the lone star state who seeks the procedure outside the law, or anyone who assists her -- including healthcare professionals, it opens up the potential for similar legal challenges to other Supreme Court rulings on marriage, guns, and other rights.
The vote was 5-4, with Chief Justice John Roberts joining the liberal members of the court in dissenting.
The ruling allows abortion rights supporters to sue in state court, where a Texas judge on Dec. 9 ruled the law unconstitutional. He stopped short, however, of issuing an injunction against. Abortion rights opponents have vowed to appeal District Judge David Peeples’ ruling.
A timeline on the case
The law took effect on Sept. 1, 2021. The day before, the Supreme Court did not act to put a hold on the law as requested by abortion rights organizations. As a result, many Texas women seeking the procedure after 6 weeks traveled to nearby states. On Oct. 25, the Court agreed to hear a challenge to the law by the Biden Administration.
The Dec. 10 Supreme Court decision to uphold the Texas law contrasts with a general consensus among many legal observers that the justices were receptive to blocking the law, based on questions and issues the judges raised during oral arguments on Nov. 1, 2021.
A separate legal challenge to abortion rights involves a Mississippi law banning the procedure starting at 15 weeks of pregnancy. The Supreme Court justices scheduled oral arguments in that case for Dec. 1, and are expected to issue a ruling in that case in June 2022.
A version of this article first appeared on WebMD.com .
In a highly anticipated decision, the U.S. Supreme Court ruled Dec. 10 that the controversial Texas abortion law that restricts the procedure to women pregnant for 6 weeks or less may continue to be enforced, but allowed for state and federal courts to hear challenges to whether it violates the Constitution.
As anti-abortion organizations celebrate and abortion rights groups confer on what the decision could mean for women not only in Texas but across the United States, there is another, bigger implication as well.
The Texas law generated a lot of controversy, in part, because it took an unusual approach. In authorizing essentially anyone across the nation to file a lawsuit against a woman in the lone star state who seeks the procedure outside the law, or anyone who assists her -- including healthcare professionals, it opens up the potential for similar legal challenges to other Supreme Court rulings on marriage, guns, and other rights.
The vote was 5-4, with Chief Justice John Roberts joining the liberal members of the court in dissenting.
The ruling allows abortion rights supporters to sue in state court, where a Texas judge on Dec. 9 ruled the law unconstitutional. He stopped short, however, of issuing an injunction against. Abortion rights opponents have vowed to appeal District Judge David Peeples’ ruling.
A timeline on the case
The law took effect on Sept. 1, 2021. The day before, the Supreme Court did not act to put a hold on the law as requested by abortion rights organizations. As a result, many Texas women seeking the procedure after 6 weeks traveled to nearby states. On Oct. 25, the Court agreed to hear a challenge to the law by the Biden Administration.
The Dec. 10 Supreme Court decision to uphold the Texas law contrasts with a general consensus among many legal observers that the justices were receptive to blocking the law, based on questions and issues the judges raised during oral arguments on Nov. 1, 2021.
A separate legal challenge to abortion rights involves a Mississippi law banning the procedure starting at 15 weeks of pregnancy. The Supreme Court justices scheduled oral arguments in that case for Dec. 1, and are expected to issue a ruling in that case in June 2022.
A version of this article first appeared on WebMD.com .
In a highly anticipated decision, the U.S. Supreme Court ruled Dec. 10 that the controversial Texas abortion law that restricts the procedure to women pregnant for 6 weeks or less may continue to be enforced, but allowed for state and federal courts to hear challenges to whether it violates the Constitution.
As anti-abortion organizations celebrate and abortion rights groups confer on what the decision could mean for women not only in Texas but across the United States, there is another, bigger implication as well.
The Texas law generated a lot of controversy, in part, because it took an unusual approach. In authorizing essentially anyone across the nation to file a lawsuit against a woman in the lone star state who seeks the procedure outside the law, or anyone who assists her -- including healthcare professionals, it opens up the potential for similar legal challenges to other Supreme Court rulings on marriage, guns, and other rights.
The vote was 5-4, with Chief Justice John Roberts joining the liberal members of the court in dissenting.
The ruling allows abortion rights supporters to sue in state court, where a Texas judge on Dec. 9 ruled the law unconstitutional. He stopped short, however, of issuing an injunction against. Abortion rights opponents have vowed to appeal District Judge David Peeples’ ruling.
A timeline on the case
The law took effect on Sept. 1, 2021. The day before, the Supreme Court did not act to put a hold on the law as requested by abortion rights organizations. As a result, many Texas women seeking the procedure after 6 weeks traveled to nearby states. On Oct. 25, the Court agreed to hear a challenge to the law by the Biden Administration.
The Dec. 10 Supreme Court decision to uphold the Texas law contrasts with a general consensus among many legal observers that the justices were receptive to blocking the law, based on questions and issues the judges raised during oral arguments on Nov. 1, 2021.
A separate legal challenge to abortion rights involves a Mississippi law banning the procedure starting at 15 weeks of pregnancy. The Supreme Court justices scheduled oral arguments in that case for Dec. 1, and are expected to issue a ruling in that case in June 2022.
A version of this article first appeared on WebMD.com .
Omicron may require fourth vaccine dose, Pfizer says
, Pfizer officials said on Dec. 8.
The standard two doses may be less effective against the variant, the company announced earlier in the day, and a booster dose increases neutralizing antibodies.
But the timeline might need to be moved up for a fourth dose. Previously, Pfizer CEO Albert Bourla, PhD, said another dose might be needed about a year after a third shot. Now the company’s scientists believe that a fourth shot, which targets the Omicron variant, could be required sooner.
“With Omicron, we need to wait and see because we have very little information. We may need it faster,” Dr. Bourla said on CNBC’s Squawk Box.
“But for right now, the most important thing is that we have winter in front of us,” he said. “From a healthcare perspective, it is important to understand that we need to be well-protected to go through the winter.”
A third dose should provide protection throughout the winter, Dr. Bourla said. That may buy time until the early spring to develop new shots that target Omicron, which Pfizer could have ready by March, according to Bloomberg News.
As of the afternoon of Dec. 8, 43 people in 19 states had tested positive for the Omicron variant, according to The Associated Press. More than 75% had been vaccinated, and a third had had booster shots. About a third had traveled internationally.
Nearly all of them have had mild symptoms so far, the AP reported, with the most common symptoms being a cough, congestion, and fatigue. One person has been hospitalized, but no deaths have been reported so far.
The CDC is still trying to determine how the Omicron variant may affect the course of the pandemic and whether the strain is more contagious or causes more severe disease.
“What we generally know is the more mutations a variant has, the higher level you need your immunity to be,” Rochelle Walensky, MD, director of the CDC, told the AP.
“We want to make sure we bolster everybody’s immunity,” she said. “And that’s really what motivated the decision to expand our guidance [on boosters for all adults].”
The Omicron variant has been reported in 57 countries so far, World Health Organization officials reported Dec. 8, and they expect that number to continue growing.
“Certain features of Omicron, including its global spread and large number of mutations, suggest it could have a major impact on the course of the pandemic. Exactly what that impact will be is still difficult to know,” Tedros Adhanom Ghebreyesus, PhD, the World Health Organization’s director-general, said during a media briefing.
Several studies suggest that Omicron leads to a rapid increase in transmission, he said, though scientists are still trying to understand whether it can “outcompete Delta.” Data from South Africa also suggests a higher risk of reinfection with Omicron, though it appears to cause milder disease than Delta, he noted.
“Even though we still need answers to some crucial questions, we are not defenseless against Omicron or Delta,” he said. “The steps countries take today, and in the coming days and weeks, will determine how Omicron unfolds.”
A version of this article first appeared on WebMD.com.
, Pfizer officials said on Dec. 8.
The standard two doses may be less effective against the variant, the company announced earlier in the day, and a booster dose increases neutralizing antibodies.
But the timeline might need to be moved up for a fourth dose. Previously, Pfizer CEO Albert Bourla, PhD, said another dose might be needed about a year after a third shot. Now the company’s scientists believe that a fourth shot, which targets the Omicron variant, could be required sooner.
“With Omicron, we need to wait and see because we have very little information. We may need it faster,” Dr. Bourla said on CNBC’s Squawk Box.
“But for right now, the most important thing is that we have winter in front of us,” he said. “From a healthcare perspective, it is important to understand that we need to be well-protected to go through the winter.”
A third dose should provide protection throughout the winter, Dr. Bourla said. That may buy time until the early spring to develop new shots that target Omicron, which Pfizer could have ready by March, according to Bloomberg News.
As of the afternoon of Dec. 8, 43 people in 19 states had tested positive for the Omicron variant, according to The Associated Press. More than 75% had been vaccinated, and a third had had booster shots. About a third had traveled internationally.
Nearly all of them have had mild symptoms so far, the AP reported, with the most common symptoms being a cough, congestion, and fatigue. One person has been hospitalized, but no deaths have been reported so far.
The CDC is still trying to determine how the Omicron variant may affect the course of the pandemic and whether the strain is more contagious or causes more severe disease.
“What we generally know is the more mutations a variant has, the higher level you need your immunity to be,” Rochelle Walensky, MD, director of the CDC, told the AP.
“We want to make sure we bolster everybody’s immunity,” she said. “And that’s really what motivated the decision to expand our guidance [on boosters for all adults].”
The Omicron variant has been reported in 57 countries so far, World Health Organization officials reported Dec. 8, and they expect that number to continue growing.
“Certain features of Omicron, including its global spread and large number of mutations, suggest it could have a major impact on the course of the pandemic. Exactly what that impact will be is still difficult to know,” Tedros Adhanom Ghebreyesus, PhD, the World Health Organization’s director-general, said during a media briefing.
Several studies suggest that Omicron leads to a rapid increase in transmission, he said, though scientists are still trying to understand whether it can “outcompete Delta.” Data from South Africa also suggests a higher risk of reinfection with Omicron, though it appears to cause milder disease than Delta, he noted.
“Even though we still need answers to some crucial questions, we are not defenseless against Omicron or Delta,” he said. “The steps countries take today, and in the coming days and weeks, will determine how Omicron unfolds.”
A version of this article first appeared on WebMD.com.
, Pfizer officials said on Dec. 8.
The standard two doses may be less effective against the variant, the company announced earlier in the day, and a booster dose increases neutralizing antibodies.
But the timeline might need to be moved up for a fourth dose. Previously, Pfizer CEO Albert Bourla, PhD, said another dose might be needed about a year after a third shot. Now the company’s scientists believe that a fourth shot, which targets the Omicron variant, could be required sooner.
“With Omicron, we need to wait and see because we have very little information. We may need it faster,” Dr. Bourla said on CNBC’s Squawk Box.
“But for right now, the most important thing is that we have winter in front of us,” he said. “From a healthcare perspective, it is important to understand that we need to be well-protected to go through the winter.”
A third dose should provide protection throughout the winter, Dr. Bourla said. That may buy time until the early spring to develop new shots that target Omicron, which Pfizer could have ready by March, according to Bloomberg News.
As of the afternoon of Dec. 8, 43 people in 19 states had tested positive for the Omicron variant, according to The Associated Press. More than 75% had been vaccinated, and a third had had booster shots. About a third had traveled internationally.
Nearly all of them have had mild symptoms so far, the AP reported, with the most common symptoms being a cough, congestion, and fatigue. One person has been hospitalized, but no deaths have been reported so far.
The CDC is still trying to determine how the Omicron variant may affect the course of the pandemic and whether the strain is more contagious or causes more severe disease.
“What we generally know is the more mutations a variant has, the higher level you need your immunity to be,” Rochelle Walensky, MD, director of the CDC, told the AP.
“We want to make sure we bolster everybody’s immunity,” she said. “And that’s really what motivated the decision to expand our guidance [on boosters for all adults].”
The Omicron variant has been reported in 57 countries so far, World Health Organization officials reported Dec. 8, and they expect that number to continue growing.
“Certain features of Omicron, including its global spread and large number of mutations, suggest it could have a major impact on the course of the pandemic. Exactly what that impact will be is still difficult to know,” Tedros Adhanom Ghebreyesus, PhD, the World Health Organization’s director-general, said during a media briefing.
Several studies suggest that Omicron leads to a rapid increase in transmission, he said, though scientists are still trying to understand whether it can “outcompete Delta.” Data from South Africa also suggests a higher risk of reinfection with Omicron, though it appears to cause milder disease than Delta, he noted.
“Even though we still need answers to some crucial questions, we are not defenseless against Omicron or Delta,” he said. “The steps countries take today, and in the coming days and weeks, will determine how Omicron unfolds.”
A version of this article first appeared on WebMD.com.
Idiopathic pulmonary fibrosis – a mortality predictor found?
A low lymphocyte-to-monocyte ratio (LMR) is associated with worse survival in newly-diagnosed patients with idiopathic pulmonary fibrosis (IPF), according to a new retrospective, single-center analysis. Patients with both IPF and lung cancer also had a lower LMR than patients with IPF alone.
The study, published online in Respiratory Medicine, was conducted among 77 newly diagnosed patients, 40 end-stage IPF patients, and 17 patients with IPF and lung cancer. All received at least 1 year of antifibrotic therapy (pirfenidone or nintedanib). The researchers collected demographic and clinical data between December 2014 and December 2020.
The disease course of IPF is difficult to predict, with some patients progressing slowly, and others suffer a rapid decline to respiratory failure. Previous studies found that higher levels of monocytes are associated with higher mortality in IPF and other fibrotic lung disease, and both neutrophil-to-lymphocyte ratio (NLR) and LMR have been shown to predict mortality in lung cancer.
A previous study found that IPF patients had a higher NLR and a lower LMR than controls, but that research did not consider the impact of antifibrotic treatment, which may improve outcomes.
There has been accumulating cellular and molecular evidence that leukocyte population abnormalities are associated with IPF outcomes, but that work was more discovery based and relied on tests that aren’t readily available clinically, said Erica L. Herzog, MD, PhD, who was asked to comment on the study. “It’s provided a lot of insight into potential new mechanisms and potential biomarkers, but their clinical utility for patients is limited. So the use of lymphocyte-to-monocyte ratios that can be obtained from a complete blood cell count, which is a test that can be done in any hospital, would really be a game-changer in terms of predictive algorithms for patients with IPF,” said Dr. Herzog, who is a professor of medicine and pathology at Yale University, New Haven, Conn., and director of the Yale ILD Center of Excellence.
In humans, abnormalities in circulating monocytes and lymphocytes have individually been linked worse IPF outcomes. Animal studies have implicated monocyte-derived cells in lung fibrosis, but because animal studies have shown that lymphocyte populations are not required for fibrosis, more work is needed.
“I think what we’re finding is that lymphocytes probably have a regulatory role, and there’s probably a protective population and potentially a pathogenic population. Something about the balance between adaptive immunity, which is reflected by your lymphocytes, and innate immunity, which is reflected by your monocytes. Something about that balance is important for tissue homeostasis, and then when it’s disrupted or perturbed, fibrosis ensues,” said Dr. Herzog.
Study details
The newly diagnosed patients were older (mean age, 70 years) than the end-stage IPF patients (mean age, 60 years) and patients with IPF and lung cancer (mean age, 64 years; P < .0001).
Among newly diagnosed IPF patients, a receiving operating characteristic analysis before antifibrotic treatment determined a cutoff LMR value of less than 4.18, with an area under the curve of 0.67 (P = .025). Values below 4.18 were associated with shorter survival (hazard ratio, 6.88; P = .027).
Patients with LMR less than 4.18 were more likely to be men (89% vs. 67%; P = .036), had a lower percent predicted forced vital capacity (76% vs. 87%; P = .023), and were more likely to die or undergo lung transplant (34% vs. 5%; P = .009).
Mortality results
A Kaplan-Meier curve illustrated a stark difference between patients with LMR of 4.18 or higher, nearly all of whom remained alive out to almost 100 months of follow-up. Around 30% of those with LMR less than 4.18 remained alive while close to 100% of the patients with LMR below this value showed worsened outcomes. “You don’t normally see curves like that,” said Dr. Herzog.
There was no significant difference in blood cell counts and ratios at the time of IPF diagnosis and after 1 year of antifibrotic treatment, which suggests that the risk profile is independent of treatment, according to the study authors.
Among patient subgroups, those with IPF and lung cancer had the lowest mean LMR (2.2), followed by newly diagnosed patients (3.5), and those with end-stage disease (3.6; P < .0001).
The study authors reported financial relationships with various pharmaceutical companies. Dr. Herzog had no relevant financial disclosures.
A low lymphocyte-to-monocyte ratio (LMR) is associated with worse survival in newly-diagnosed patients with idiopathic pulmonary fibrosis (IPF), according to a new retrospective, single-center analysis. Patients with both IPF and lung cancer also had a lower LMR than patients with IPF alone.
The study, published online in Respiratory Medicine, was conducted among 77 newly diagnosed patients, 40 end-stage IPF patients, and 17 patients with IPF and lung cancer. All received at least 1 year of antifibrotic therapy (pirfenidone or nintedanib). The researchers collected demographic and clinical data between December 2014 and December 2020.
The disease course of IPF is difficult to predict, with some patients progressing slowly, and others suffer a rapid decline to respiratory failure. Previous studies found that higher levels of monocytes are associated with higher mortality in IPF and other fibrotic lung disease, and both neutrophil-to-lymphocyte ratio (NLR) and LMR have been shown to predict mortality in lung cancer.
A previous study found that IPF patients had a higher NLR and a lower LMR than controls, but that research did not consider the impact of antifibrotic treatment, which may improve outcomes.
There has been accumulating cellular and molecular evidence that leukocyte population abnormalities are associated with IPF outcomes, but that work was more discovery based and relied on tests that aren’t readily available clinically, said Erica L. Herzog, MD, PhD, who was asked to comment on the study. “It’s provided a lot of insight into potential new mechanisms and potential biomarkers, but their clinical utility for patients is limited. So the use of lymphocyte-to-monocyte ratios that can be obtained from a complete blood cell count, which is a test that can be done in any hospital, would really be a game-changer in terms of predictive algorithms for patients with IPF,” said Dr. Herzog, who is a professor of medicine and pathology at Yale University, New Haven, Conn., and director of the Yale ILD Center of Excellence.
In humans, abnormalities in circulating monocytes and lymphocytes have individually been linked worse IPF outcomes. Animal studies have implicated monocyte-derived cells in lung fibrosis, but because animal studies have shown that lymphocyte populations are not required for fibrosis, more work is needed.
“I think what we’re finding is that lymphocytes probably have a regulatory role, and there’s probably a protective population and potentially a pathogenic population. Something about the balance between adaptive immunity, which is reflected by your lymphocytes, and innate immunity, which is reflected by your monocytes. Something about that balance is important for tissue homeostasis, and then when it’s disrupted or perturbed, fibrosis ensues,” said Dr. Herzog.
Study details
The newly diagnosed patients were older (mean age, 70 years) than the end-stage IPF patients (mean age, 60 years) and patients with IPF and lung cancer (mean age, 64 years; P < .0001).
Among newly diagnosed IPF patients, a receiving operating characteristic analysis before antifibrotic treatment determined a cutoff LMR value of less than 4.18, with an area under the curve of 0.67 (P = .025). Values below 4.18 were associated with shorter survival (hazard ratio, 6.88; P = .027).
Patients with LMR less than 4.18 were more likely to be men (89% vs. 67%; P = .036), had a lower percent predicted forced vital capacity (76% vs. 87%; P = .023), and were more likely to die or undergo lung transplant (34% vs. 5%; P = .009).
Mortality results
A Kaplan-Meier curve illustrated a stark difference between patients with LMR of 4.18 or higher, nearly all of whom remained alive out to almost 100 months of follow-up. Around 30% of those with LMR less than 4.18 remained alive while close to 100% of the patients with LMR below this value showed worsened outcomes. “You don’t normally see curves like that,” said Dr. Herzog.
There was no significant difference in blood cell counts and ratios at the time of IPF diagnosis and after 1 year of antifibrotic treatment, which suggests that the risk profile is independent of treatment, according to the study authors.
Among patient subgroups, those with IPF and lung cancer had the lowest mean LMR (2.2), followed by newly diagnosed patients (3.5), and those with end-stage disease (3.6; P < .0001).
The study authors reported financial relationships with various pharmaceutical companies. Dr. Herzog had no relevant financial disclosures.
A low lymphocyte-to-monocyte ratio (LMR) is associated with worse survival in newly-diagnosed patients with idiopathic pulmonary fibrosis (IPF), according to a new retrospective, single-center analysis. Patients with both IPF and lung cancer also had a lower LMR than patients with IPF alone.
The study, published online in Respiratory Medicine, was conducted among 77 newly diagnosed patients, 40 end-stage IPF patients, and 17 patients with IPF and lung cancer. All received at least 1 year of antifibrotic therapy (pirfenidone or nintedanib). The researchers collected demographic and clinical data between December 2014 and December 2020.
The disease course of IPF is difficult to predict, with some patients progressing slowly, and others suffer a rapid decline to respiratory failure. Previous studies found that higher levels of monocytes are associated with higher mortality in IPF and other fibrotic lung disease, and both neutrophil-to-lymphocyte ratio (NLR) and LMR have been shown to predict mortality in lung cancer.
A previous study found that IPF patients had a higher NLR and a lower LMR than controls, but that research did not consider the impact of antifibrotic treatment, which may improve outcomes.
There has been accumulating cellular and molecular evidence that leukocyte population abnormalities are associated with IPF outcomes, but that work was more discovery based and relied on tests that aren’t readily available clinically, said Erica L. Herzog, MD, PhD, who was asked to comment on the study. “It’s provided a lot of insight into potential new mechanisms and potential biomarkers, but their clinical utility for patients is limited. So the use of lymphocyte-to-monocyte ratios that can be obtained from a complete blood cell count, which is a test that can be done in any hospital, would really be a game-changer in terms of predictive algorithms for patients with IPF,” said Dr. Herzog, who is a professor of medicine and pathology at Yale University, New Haven, Conn., and director of the Yale ILD Center of Excellence.
In humans, abnormalities in circulating monocytes and lymphocytes have individually been linked worse IPF outcomes. Animal studies have implicated monocyte-derived cells in lung fibrosis, but because animal studies have shown that lymphocyte populations are not required for fibrosis, more work is needed.
“I think what we’re finding is that lymphocytes probably have a regulatory role, and there’s probably a protective population and potentially a pathogenic population. Something about the balance between adaptive immunity, which is reflected by your lymphocytes, and innate immunity, which is reflected by your monocytes. Something about that balance is important for tissue homeostasis, and then when it’s disrupted or perturbed, fibrosis ensues,” said Dr. Herzog.
Study details
The newly diagnosed patients were older (mean age, 70 years) than the end-stage IPF patients (mean age, 60 years) and patients with IPF and lung cancer (mean age, 64 years; P < .0001).
Among newly diagnosed IPF patients, a receiving operating characteristic analysis before antifibrotic treatment determined a cutoff LMR value of less than 4.18, with an area under the curve of 0.67 (P = .025). Values below 4.18 were associated with shorter survival (hazard ratio, 6.88; P = .027).
Patients with LMR less than 4.18 were more likely to be men (89% vs. 67%; P = .036), had a lower percent predicted forced vital capacity (76% vs. 87%; P = .023), and were more likely to die or undergo lung transplant (34% vs. 5%; P = .009).
Mortality results
A Kaplan-Meier curve illustrated a stark difference between patients with LMR of 4.18 or higher, nearly all of whom remained alive out to almost 100 months of follow-up. Around 30% of those with LMR less than 4.18 remained alive while close to 100% of the patients with LMR below this value showed worsened outcomes. “You don’t normally see curves like that,” said Dr. Herzog.
There was no significant difference in blood cell counts and ratios at the time of IPF diagnosis and after 1 year of antifibrotic treatment, which suggests that the risk profile is independent of treatment, according to the study authors.
Among patient subgroups, those with IPF and lung cancer had the lowest mean LMR (2.2), followed by newly diagnosed patients (3.5), and those with end-stage disease (3.6; P < .0001).
The study authors reported financial relationships with various pharmaceutical companies. Dr. Herzog had no relevant financial disclosures.
FROM RESPIRATORY MEDICINE