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Scaly foot rash
The Wood’s lamp revealed a coral-red fluorescence in the interdigital spaces, which led to a diagnosis of erythrasma.
The coral-red fluorescence seen under the Wood’s lamp is due to porphyrins produced by Corynebacterium minutissimum. The organism invades the stratum corneum where it proliferates and causes erythrasma. Erythrasma typically appears as delineated, dry, red-brown patches in intertriginous areas, such as the axilla, groin, interdigital spaces, intergluteal cleft, perianal skin, and inframammary area.
Erythrasma affects 4% of the population; risk factors include poor hygiene, hyperhidrosis, obesity, warm climate, diabetes, and an immunocompromised state. The differential diagnosis for a pruritic rash between the toes includes tinea pedis and contact dermatitis.
First-line management of erythrasma includes both nonpharmacologic and pharmacologic modalities. Good hygiene and, depending on the area affected, loose-fitting cotton undergarments can help treat and prevent erythrasma.
Topical 2% miconazole bid for 2 weeks has resulted in clearance rates as high as 88%. Its affordable price, over-the-counter availability, and lack of adverse effects make miconazole a reasonable choice. It is also a smart treatment choice when erythrasma is coexisting with tinea because it can treat both conditions.
Topical 1% clindamycin or 2% erythromycin solution or gel bid for 2 weeks also can be used to treat the condition. However, given that topical antibiotics are more expensive than single-dose oral treatment and are no better than the oral formulations of these antibiotics, clarithromycin 1 g taken once orally may be preferred. Our patient was treated with a single dose of clarithromycin 1 g. At follow-up, her erythrasma was clear.
This case was adapted from: Vo T, Usatine RP. Persistent rash on feet. J Fam Pract. 2018;67:107-109
The Wood’s lamp revealed a coral-red fluorescence in the interdigital spaces, which led to a diagnosis of erythrasma.
The coral-red fluorescence seen under the Wood’s lamp is due to porphyrins produced by Corynebacterium minutissimum. The organism invades the stratum corneum where it proliferates and causes erythrasma. Erythrasma typically appears as delineated, dry, red-brown patches in intertriginous areas, such as the axilla, groin, interdigital spaces, intergluteal cleft, perianal skin, and inframammary area.
Erythrasma affects 4% of the population; risk factors include poor hygiene, hyperhidrosis, obesity, warm climate, diabetes, and an immunocompromised state. The differential diagnosis for a pruritic rash between the toes includes tinea pedis and contact dermatitis.
First-line management of erythrasma includes both nonpharmacologic and pharmacologic modalities. Good hygiene and, depending on the area affected, loose-fitting cotton undergarments can help treat and prevent erythrasma.
Topical 2% miconazole bid for 2 weeks has resulted in clearance rates as high as 88%. Its affordable price, over-the-counter availability, and lack of adverse effects make miconazole a reasonable choice. It is also a smart treatment choice when erythrasma is coexisting with tinea because it can treat both conditions.
Topical 1% clindamycin or 2% erythromycin solution or gel bid for 2 weeks also can be used to treat the condition. However, given that topical antibiotics are more expensive than single-dose oral treatment and are no better than the oral formulations of these antibiotics, clarithromycin 1 g taken once orally may be preferred. Our patient was treated with a single dose of clarithromycin 1 g. At follow-up, her erythrasma was clear.
This case was adapted from: Vo T, Usatine RP. Persistent rash on feet. J Fam Pract. 2018;67:107-109
The Wood’s lamp revealed a coral-red fluorescence in the interdigital spaces, which led to a diagnosis of erythrasma.
The coral-red fluorescence seen under the Wood’s lamp is due to porphyrins produced by Corynebacterium minutissimum. The organism invades the stratum corneum where it proliferates and causes erythrasma. Erythrasma typically appears as delineated, dry, red-brown patches in intertriginous areas, such as the axilla, groin, interdigital spaces, intergluteal cleft, perianal skin, and inframammary area.
Erythrasma affects 4% of the population; risk factors include poor hygiene, hyperhidrosis, obesity, warm climate, diabetes, and an immunocompromised state. The differential diagnosis for a pruritic rash between the toes includes tinea pedis and contact dermatitis.
First-line management of erythrasma includes both nonpharmacologic and pharmacologic modalities. Good hygiene and, depending on the area affected, loose-fitting cotton undergarments can help treat and prevent erythrasma.
Topical 2% miconazole bid for 2 weeks has resulted in clearance rates as high as 88%. Its affordable price, over-the-counter availability, and lack of adverse effects make miconazole a reasonable choice. It is also a smart treatment choice when erythrasma is coexisting with tinea because it can treat both conditions.
Topical 1% clindamycin or 2% erythromycin solution or gel bid for 2 weeks also can be used to treat the condition. However, given that topical antibiotics are more expensive than single-dose oral treatment and are no better than the oral formulations of these antibiotics, clarithromycin 1 g taken once orally may be preferred. Our patient was treated with a single dose of clarithromycin 1 g. At follow-up, her erythrasma was clear.
This case was adapted from: Vo T, Usatine RP. Persistent rash on feet. J Fam Pract. 2018;67:107-109
Parental refusal of neonatal therapy a growing problem
according to an update at the virtual Pediatric Hospital Medicine virtual. This finding indicates the value of preparing policies and strategies to guide parents to appropriate medical decisions in advance.
“Elimination of nonmedical exceptions to vaccinations and intramuscular vitamin K made it into two of the AAP [American Academy of Pediatrics] top 10 public health resolutions, most likely because refusal rates are going up,” reported Ha N. Nguyen, MD, of the division of pediatric hospital medicine at Stanford (Calif.) University.
Importantly, state laws differ. For example, erythromycin ointment is mandated in neonates for prevention of gonococcal ophthalmia neonatorum in many states, including New York, where it can be administered without consent, according to Dr. Nguyen. Conversely, California does not mandate this preventive therapy even though the law does not offer medico-legal protection to providers if it is not given.
“There is a glaring gap in the way the [California] law was written,” said Dr. Nguyen, who used this as an example of why protocols and strategies to reduce risk of parental refusal of neonatal therapies should be informed by, and consistent with, state laws.
Because of the low levels of vitamin K in infants, the rate of bleeding within the first few months of life is nearly 2%, according to figures cited by Dr. Nguyen. It falls to less than 0.001% with administration of intramuscular vitamin K.
Families who refuse intramuscular vitamin K often state that they understand the risks, but data from a survey Dr. Nguyen cited found this is not necessarily true. In this survey, about two-thirds knew that bleeding was the risk, but less than 20% understood bleeding risks included intracranial hemorrhage, and less than 10% were aware that there was potential for a fatal outcome.
“This is a huge piece of the puzzle for counseling,” Dr. Nguyen said. “The discussion with parents should explicitly involve the explanation that the risks include brain bleeds and death.”
Although most infant bleeds attributed to low vitamin K stores are mucocutaneous or gastrointestinal, intracranial hemorrhage does occur, and these outcomes can be devastating. Up to 25% of infants who experience an intracranial hemorrhage die, while 60% of those who survive have some degree of neurodevelopmental impairment, according to Dr. Nguyen.
Oral vitamin K, which requires multiple doses, is not an appropriate substitute for the recommended single injection of the intramuscular formulation. The one study that compared intramuscular and oral vitamin K did not prove equivalence, and no oral vitamin K products have been approved by the Food and Drug Administration, Dr. Nguyen reported.
“We do know confidently that oral vitamin K does often result in poor adherence,” she said,
In a recent review article of parental vitamin K refusal, one of the most significant predictors of refusal of any recommended neonatal preventive treatment was refusal of another. According to data in that article, summarized by Dr. Nguyen, 68% of the parents who declined intramuscular vitamin K also declined erythromycin ointment, and more than 90% declined hepatitis B vaccine.
“One reason that many parents refuse the hepatitis B vaccine is that they do not think their child is at risk,” explained Kimberly Horstman, MD, from Stanford University and John Muir Medical Center in Walnut Creek, Calif.
Yet hepatitis B virus (HBV) infection, which is asymptomatic, can be acquired from many sources, including nonfamily contacts, according to Dr. Horstman.
“The AAP supports universal hepatitis B vaccine within 24 hours of birth for all infants over 2,000 g at birth,” Dr. Horstman said. In those weighing less, the vaccine is recommended within the first month of life.
The risk of parental refusal for recommended neonatal preventive medicines is higher among those with more education and higher income relative to those with less, Dr. Nguyen said. Other predictors include older maternal age, private insurance, and delivery by a midwife or at a birthing center.
Many parents who refuse preventive neonatal medications do not fully grasp what risks they are accepting by avoiding a recommended medication, according to both Dr. Nguyen and Dr. Horstman. In some cases, the goal is to protect their child from the pain of a needlestick, even when the health consequences might include far more invasive and painful therapies if the child develops the disease the medication would have prevented.
In the case of intramuscular vitamin K, “we encourage a presumptive approach,” Dr. Nguyen said. Concerns can then be addressed only if the parents refuse.
For another strategy, Dr. Nguyen recommended counseling parents about the need and value of preventive therapies during pregnancy. She cited data suggesting that it is more difficult to change the minds of parents after delivery.
Echoing this approach in regard to HBV vaccine, Dr. Horstman suggested encouraging colleagues, including obstetricians and community pediatricians, to raise and address this topic during prenatal counseling. By preparing parents for the recommended medications in the prenatal period, concerns can be addressed in advance.
The health risks posed by parents who refuse recommended medications is recognized by the Centers for Disease Control and Prevention. Both Dr. Horstman and Dr. Nguyen said there are handouts from the CDC and the AAP to inform parents of the purpose and benefit of recommended preventive therapies, as well as to equip caregivers with facts for effective counseling.
according to an update at the virtual Pediatric Hospital Medicine virtual. This finding indicates the value of preparing policies and strategies to guide parents to appropriate medical decisions in advance.
“Elimination of nonmedical exceptions to vaccinations and intramuscular vitamin K made it into two of the AAP [American Academy of Pediatrics] top 10 public health resolutions, most likely because refusal rates are going up,” reported Ha N. Nguyen, MD, of the division of pediatric hospital medicine at Stanford (Calif.) University.
Importantly, state laws differ. For example, erythromycin ointment is mandated in neonates for prevention of gonococcal ophthalmia neonatorum in many states, including New York, where it can be administered without consent, according to Dr. Nguyen. Conversely, California does not mandate this preventive therapy even though the law does not offer medico-legal protection to providers if it is not given.
“There is a glaring gap in the way the [California] law was written,” said Dr. Nguyen, who used this as an example of why protocols and strategies to reduce risk of parental refusal of neonatal therapies should be informed by, and consistent with, state laws.
Because of the low levels of vitamin K in infants, the rate of bleeding within the first few months of life is nearly 2%, according to figures cited by Dr. Nguyen. It falls to less than 0.001% with administration of intramuscular vitamin K.
Families who refuse intramuscular vitamin K often state that they understand the risks, but data from a survey Dr. Nguyen cited found this is not necessarily true. In this survey, about two-thirds knew that bleeding was the risk, but less than 20% understood bleeding risks included intracranial hemorrhage, and less than 10% were aware that there was potential for a fatal outcome.
“This is a huge piece of the puzzle for counseling,” Dr. Nguyen said. “The discussion with parents should explicitly involve the explanation that the risks include brain bleeds and death.”
Although most infant bleeds attributed to low vitamin K stores are mucocutaneous or gastrointestinal, intracranial hemorrhage does occur, and these outcomes can be devastating. Up to 25% of infants who experience an intracranial hemorrhage die, while 60% of those who survive have some degree of neurodevelopmental impairment, according to Dr. Nguyen.
Oral vitamin K, which requires multiple doses, is not an appropriate substitute for the recommended single injection of the intramuscular formulation. The one study that compared intramuscular and oral vitamin K did not prove equivalence, and no oral vitamin K products have been approved by the Food and Drug Administration, Dr. Nguyen reported.
“We do know confidently that oral vitamin K does often result in poor adherence,” she said,
In a recent review article of parental vitamin K refusal, one of the most significant predictors of refusal of any recommended neonatal preventive treatment was refusal of another. According to data in that article, summarized by Dr. Nguyen, 68% of the parents who declined intramuscular vitamin K also declined erythromycin ointment, and more than 90% declined hepatitis B vaccine.
“One reason that many parents refuse the hepatitis B vaccine is that they do not think their child is at risk,” explained Kimberly Horstman, MD, from Stanford University and John Muir Medical Center in Walnut Creek, Calif.
Yet hepatitis B virus (HBV) infection, which is asymptomatic, can be acquired from many sources, including nonfamily contacts, according to Dr. Horstman.
“The AAP supports universal hepatitis B vaccine within 24 hours of birth for all infants over 2,000 g at birth,” Dr. Horstman said. In those weighing less, the vaccine is recommended within the first month of life.
The risk of parental refusal for recommended neonatal preventive medicines is higher among those with more education and higher income relative to those with less, Dr. Nguyen said. Other predictors include older maternal age, private insurance, and delivery by a midwife or at a birthing center.
Many parents who refuse preventive neonatal medications do not fully grasp what risks they are accepting by avoiding a recommended medication, according to both Dr. Nguyen and Dr. Horstman. In some cases, the goal is to protect their child from the pain of a needlestick, even when the health consequences might include far more invasive and painful therapies if the child develops the disease the medication would have prevented.
In the case of intramuscular vitamin K, “we encourage a presumptive approach,” Dr. Nguyen said. Concerns can then be addressed only if the parents refuse.
For another strategy, Dr. Nguyen recommended counseling parents about the need and value of preventive therapies during pregnancy. She cited data suggesting that it is more difficult to change the minds of parents after delivery.
Echoing this approach in regard to HBV vaccine, Dr. Horstman suggested encouraging colleagues, including obstetricians and community pediatricians, to raise and address this topic during prenatal counseling. By preparing parents for the recommended medications in the prenatal period, concerns can be addressed in advance.
The health risks posed by parents who refuse recommended medications is recognized by the Centers for Disease Control and Prevention. Both Dr. Horstman and Dr. Nguyen said there are handouts from the CDC and the AAP to inform parents of the purpose and benefit of recommended preventive therapies, as well as to equip caregivers with facts for effective counseling.
according to an update at the virtual Pediatric Hospital Medicine virtual. This finding indicates the value of preparing policies and strategies to guide parents to appropriate medical decisions in advance.
“Elimination of nonmedical exceptions to vaccinations and intramuscular vitamin K made it into two of the AAP [American Academy of Pediatrics] top 10 public health resolutions, most likely because refusal rates are going up,” reported Ha N. Nguyen, MD, of the division of pediatric hospital medicine at Stanford (Calif.) University.
Importantly, state laws differ. For example, erythromycin ointment is mandated in neonates for prevention of gonococcal ophthalmia neonatorum in many states, including New York, where it can be administered without consent, according to Dr. Nguyen. Conversely, California does not mandate this preventive therapy even though the law does not offer medico-legal protection to providers if it is not given.
“There is a glaring gap in the way the [California] law was written,” said Dr. Nguyen, who used this as an example of why protocols and strategies to reduce risk of parental refusal of neonatal therapies should be informed by, and consistent with, state laws.
Because of the low levels of vitamin K in infants, the rate of bleeding within the first few months of life is nearly 2%, according to figures cited by Dr. Nguyen. It falls to less than 0.001% with administration of intramuscular vitamin K.
Families who refuse intramuscular vitamin K often state that they understand the risks, but data from a survey Dr. Nguyen cited found this is not necessarily true. In this survey, about two-thirds knew that bleeding was the risk, but less than 20% understood bleeding risks included intracranial hemorrhage, and less than 10% were aware that there was potential for a fatal outcome.
“This is a huge piece of the puzzle for counseling,” Dr. Nguyen said. “The discussion with parents should explicitly involve the explanation that the risks include brain bleeds and death.”
Although most infant bleeds attributed to low vitamin K stores are mucocutaneous or gastrointestinal, intracranial hemorrhage does occur, and these outcomes can be devastating. Up to 25% of infants who experience an intracranial hemorrhage die, while 60% of those who survive have some degree of neurodevelopmental impairment, according to Dr. Nguyen.
Oral vitamin K, which requires multiple doses, is not an appropriate substitute for the recommended single injection of the intramuscular formulation. The one study that compared intramuscular and oral vitamin K did not prove equivalence, and no oral vitamin K products have been approved by the Food and Drug Administration, Dr. Nguyen reported.
“We do know confidently that oral vitamin K does often result in poor adherence,” she said,
In a recent review article of parental vitamin K refusal, one of the most significant predictors of refusal of any recommended neonatal preventive treatment was refusal of another. According to data in that article, summarized by Dr. Nguyen, 68% of the parents who declined intramuscular vitamin K also declined erythromycin ointment, and more than 90% declined hepatitis B vaccine.
“One reason that many parents refuse the hepatitis B vaccine is that they do not think their child is at risk,” explained Kimberly Horstman, MD, from Stanford University and John Muir Medical Center in Walnut Creek, Calif.
Yet hepatitis B virus (HBV) infection, which is asymptomatic, can be acquired from many sources, including nonfamily contacts, according to Dr. Horstman.
“The AAP supports universal hepatitis B vaccine within 24 hours of birth for all infants over 2,000 g at birth,” Dr. Horstman said. In those weighing less, the vaccine is recommended within the first month of life.
The risk of parental refusal for recommended neonatal preventive medicines is higher among those with more education and higher income relative to those with less, Dr. Nguyen said. Other predictors include older maternal age, private insurance, and delivery by a midwife or at a birthing center.
Many parents who refuse preventive neonatal medications do not fully grasp what risks they are accepting by avoiding a recommended medication, according to both Dr. Nguyen and Dr. Horstman. In some cases, the goal is to protect their child from the pain of a needlestick, even when the health consequences might include far more invasive and painful therapies if the child develops the disease the medication would have prevented.
In the case of intramuscular vitamin K, “we encourage a presumptive approach,” Dr. Nguyen said. Concerns can then be addressed only if the parents refuse.
For another strategy, Dr. Nguyen recommended counseling parents about the need and value of preventive therapies during pregnancy. She cited data suggesting that it is more difficult to change the minds of parents after delivery.
Echoing this approach in regard to HBV vaccine, Dr. Horstman suggested encouraging colleagues, including obstetricians and community pediatricians, to raise and address this topic during prenatal counseling. By preparing parents for the recommended medications in the prenatal period, concerns can be addressed in advance.
The health risks posed by parents who refuse recommended medications is recognized by the Centers for Disease Control and Prevention. Both Dr. Horstman and Dr. Nguyen said there are handouts from the CDC and the AAP to inform parents of the purpose and benefit of recommended preventive therapies, as well as to equip caregivers with facts for effective counseling.
FROM PHM 2020
Large cohort study: Bevacizumab safe, effective for severe HHT bleeds
Systemic bevacizumab is safe and highly effective for the management of chronic bleeding and anemia in patients with hereditary hemorrhagic telangiectasia (HHT), according to findings from an international observational study.
In 238 patients from 12 international centers who were treated with bevacizumab for a median of 12 months, mean hemoglobin levels increased by 3.2 g/dL (mean pre- and posttreatment levels, 8.6 vs. 11.8 g/dL), and epistaxis severity scores (ESS) decreased by a mean of 3.4 points (pre- and posttreatment scores, 6.8 vs. 3.4 points), Hanny Al-Samkari, MD, reported at the International Society on Thrombosis and Haemostasis virtual congress.
As established in prior studies, the minimal clinically important difference in the ESS, a well-validated 10-point bleeding score in HHT, is 0.71 points; the mean reduction seen in this study was 4.75 times that, noted Dr. Al-Samkari, a clinical investigator and hematologist at Massachusetts General Hospital, Boston.
Further, the median number of red blood cell units transfused during the first year of treatment decreased by 82%, compared with the 6 months prior to treatment (9.0 vs. 0 units), and median iron infusions decreased by 70% during the same period (8.0 vs. 2.0 infusions), he said, adding that these improvements occurred within the first 6 months of treatment and were maintained through 12 months.
Study subjects were adults with a mean age of 63 years who were treated with systemic bevacizumab, a vascular endothelial growth factor receptor (VEGF) monoclonal antibody, between 2011 and 2019 for the primary indication of moderate to severe chronic HHT-related bleeding and anemia. Treatment involved four to eight induction infusions – typically at a dose of 5 mg/kg and given 4 weeks apart – followed by bevacizumab maintenance, either as continuous or scheduled maintenance at 4-, 8-, or 12-week intervals regardless of symptoms, or on an as-needed basis, with 2-6 infusions for signs or symptoms of rebleeding.
Patients received a median of 11 infusions, and 181 received maintenance treatment, including continuous or scheduled maintenance in 136 patients and as-needed maintenance in 45 patients, Dr. Al-Samkari said.
The treatment was generally well tolerated; the most common adverse events during 344 patient-years of treatment were hypertension, fatigue, and proteinuria. No fatal treatment-related adverse events occurred, and no increase in adverse events occurred with longer treatment, he noted
Venous thromboembolism occurred in five patients, including two patients who had “provoked events immediately following joint replacement surgery,” he said.
Thirteen patients (5%) discontinued treatment – 11 for inadequate effect and 2 for side effects, he noted.
Subgroup analyses showed that outcomes were similar regardless of underlying pathogenic mutation, but among those receiving bevacizumab maintenance, the continuous approach, compared with as-needed maintenance, was associated with greater improvement in hemoglobin (10.8 vs. 12.3 g/dL) and ESS (mean, 4.96 vs. 2.88) during months 7-12 of treatment, “which is the time most reflective of the effect of maintenance,” he said.
HHT, also known as Osler-Weber-Rendu disease, is a “rare, genetic, progressive, multisystem bleeding disorder resulting from disorder of angiogenesis,” Dr. Al-Samkari explained, adding that the condition is characterized by severe, recurrent epistaxis and chronic gastrointestinal bleeding.
“Bleeding frequently leads to iron deficiency anemia, which may be severe and dependent on regular iron infusions and/or blood transfusions,” he said.
Though rare, it is the second most common bleeding disorder worldwide, with a prevalence about twice that of hemophilia A and six times that of hemophilia B.
“Despite this, it has no FDA-approved therapies,” he said. “The current mainstay of care is surgical or procedural local hemostatic intervention – which is usually temporizing – and hematological support in the form of blood and iron.”
However, given that the underlying genetic defects that cause HHT result in elevations in VEGF, targeting VEGF with existing antiangiogenic agents is a promising approach.
In fact, several centers have been using bevacizumab for several years as an off-label treatment for bleeding in this setting, and while scattered case reports and small case series suggest efficacy, no “large or definitive studies” have been conducted, and safety hasn’t been carefully evaluated, he said.
To that end, the International Hereditary Hemorrhagic Telangiectasia Intravenous Bevacizumab Investigative Team (InHIBIT) was formed. The current report, “the largest study of antiangiogenic therapy to date in HHT,” represents the results of the InHIBIT-Bleed study, the first completed by the team. The next study will address bevacizumab for the treatment of high-output cardiac failure in HHT (the InHIBIT-HF study), Dr. Al-Samkari said.
Though limited by its retrospective nature and lack of a unified treatment protocol, the InHIBIT-Bleed study provides important information and is strengthened by the large cohort size, especially given that HHT is a rare disease, and by other factors, such as the substantial number of patient-years of treatment.
“Bevacizumab was effective in the management of severe HHT-related epistaxis and GI bleeds,” he said, noting the “significant and striking improvements” on a variety of measures.
Questioned about the durability of treatment effects after treatment discontinuation, Dr. Al-Samkari said outcomes are variable, “highly patient dependent,” and “something that we really need to investigate thoroughly.”
As for the potential for anti-VEGF therapy for bleeding in certain non-HHT settings, session moderator Michael Makris, MD, professor of haemostasis and thrombosis at the University of Sheffield, England, said the possibilities are intriguing.
“I work with lots of patients with von Willebrand disease and angiodysplasia,” he said, adding that angiodysplasia-related bleeding in type 2A von Willebrand disease is a major issue.
Dr. Al-Samkari agreed that the possibility is worth exploring.
“We have looked at this in a small number of patients, and the jury is still out,” he said. “But there is a publication in Gastroenterology – Albitar et al. – that evaluated bevacizumab in patients without HHT [who had] angiodysplasias from other causes – not specifically in type 2 von Willebrand syndrome ... and did find that it was effective at causing the angiodysplasias to regress, hemoglobin to improve.
“So the non-HHT use of this agent is certainly an important one [and] we do have retrospective evidence in a small group of patients who don’t have HHT, who do have angiodysplasias and bleeding, that it may be effective as well.”
Dr. Al-Samkari reported receiving research support and/or consulting fees from Agios, Amgen, and Dova.
SOURCE: Al-Samkari H et al. ISTH 2020, Abstract OC 09.2.
Systemic bevacizumab is safe and highly effective for the management of chronic bleeding and anemia in patients with hereditary hemorrhagic telangiectasia (HHT), according to findings from an international observational study.
In 238 patients from 12 international centers who were treated with bevacizumab for a median of 12 months, mean hemoglobin levels increased by 3.2 g/dL (mean pre- and posttreatment levels, 8.6 vs. 11.8 g/dL), and epistaxis severity scores (ESS) decreased by a mean of 3.4 points (pre- and posttreatment scores, 6.8 vs. 3.4 points), Hanny Al-Samkari, MD, reported at the International Society on Thrombosis and Haemostasis virtual congress.
As established in prior studies, the minimal clinically important difference in the ESS, a well-validated 10-point bleeding score in HHT, is 0.71 points; the mean reduction seen in this study was 4.75 times that, noted Dr. Al-Samkari, a clinical investigator and hematologist at Massachusetts General Hospital, Boston.
Further, the median number of red blood cell units transfused during the first year of treatment decreased by 82%, compared with the 6 months prior to treatment (9.0 vs. 0 units), and median iron infusions decreased by 70% during the same period (8.0 vs. 2.0 infusions), he said, adding that these improvements occurred within the first 6 months of treatment and were maintained through 12 months.
Study subjects were adults with a mean age of 63 years who were treated with systemic bevacizumab, a vascular endothelial growth factor receptor (VEGF) monoclonal antibody, between 2011 and 2019 for the primary indication of moderate to severe chronic HHT-related bleeding and anemia. Treatment involved four to eight induction infusions – typically at a dose of 5 mg/kg and given 4 weeks apart – followed by bevacizumab maintenance, either as continuous or scheduled maintenance at 4-, 8-, or 12-week intervals regardless of symptoms, or on an as-needed basis, with 2-6 infusions for signs or symptoms of rebleeding.
Patients received a median of 11 infusions, and 181 received maintenance treatment, including continuous or scheduled maintenance in 136 patients and as-needed maintenance in 45 patients, Dr. Al-Samkari said.
The treatment was generally well tolerated; the most common adverse events during 344 patient-years of treatment were hypertension, fatigue, and proteinuria. No fatal treatment-related adverse events occurred, and no increase in adverse events occurred with longer treatment, he noted
Venous thromboembolism occurred in five patients, including two patients who had “provoked events immediately following joint replacement surgery,” he said.
Thirteen patients (5%) discontinued treatment – 11 for inadequate effect and 2 for side effects, he noted.
Subgroup analyses showed that outcomes were similar regardless of underlying pathogenic mutation, but among those receiving bevacizumab maintenance, the continuous approach, compared with as-needed maintenance, was associated with greater improvement in hemoglobin (10.8 vs. 12.3 g/dL) and ESS (mean, 4.96 vs. 2.88) during months 7-12 of treatment, “which is the time most reflective of the effect of maintenance,” he said.
HHT, also known as Osler-Weber-Rendu disease, is a “rare, genetic, progressive, multisystem bleeding disorder resulting from disorder of angiogenesis,” Dr. Al-Samkari explained, adding that the condition is characterized by severe, recurrent epistaxis and chronic gastrointestinal bleeding.
“Bleeding frequently leads to iron deficiency anemia, which may be severe and dependent on regular iron infusions and/or blood transfusions,” he said.
Though rare, it is the second most common bleeding disorder worldwide, with a prevalence about twice that of hemophilia A and six times that of hemophilia B.
“Despite this, it has no FDA-approved therapies,” he said. “The current mainstay of care is surgical or procedural local hemostatic intervention – which is usually temporizing – and hematological support in the form of blood and iron.”
However, given that the underlying genetic defects that cause HHT result in elevations in VEGF, targeting VEGF with existing antiangiogenic agents is a promising approach.
In fact, several centers have been using bevacizumab for several years as an off-label treatment for bleeding in this setting, and while scattered case reports and small case series suggest efficacy, no “large or definitive studies” have been conducted, and safety hasn’t been carefully evaluated, he said.
To that end, the International Hereditary Hemorrhagic Telangiectasia Intravenous Bevacizumab Investigative Team (InHIBIT) was formed. The current report, “the largest study of antiangiogenic therapy to date in HHT,” represents the results of the InHIBIT-Bleed study, the first completed by the team. The next study will address bevacizumab for the treatment of high-output cardiac failure in HHT (the InHIBIT-HF study), Dr. Al-Samkari said.
Though limited by its retrospective nature and lack of a unified treatment protocol, the InHIBIT-Bleed study provides important information and is strengthened by the large cohort size, especially given that HHT is a rare disease, and by other factors, such as the substantial number of patient-years of treatment.
“Bevacizumab was effective in the management of severe HHT-related epistaxis and GI bleeds,” he said, noting the “significant and striking improvements” on a variety of measures.
Questioned about the durability of treatment effects after treatment discontinuation, Dr. Al-Samkari said outcomes are variable, “highly patient dependent,” and “something that we really need to investigate thoroughly.”
As for the potential for anti-VEGF therapy for bleeding in certain non-HHT settings, session moderator Michael Makris, MD, professor of haemostasis and thrombosis at the University of Sheffield, England, said the possibilities are intriguing.
“I work with lots of patients with von Willebrand disease and angiodysplasia,” he said, adding that angiodysplasia-related bleeding in type 2A von Willebrand disease is a major issue.
Dr. Al-Samkari agreed that the possibility is worth exploring.
“We have looked at this in a small number of patients, and the jury is still out,” he said. “But there is a publication in Gastroenterology – Albitar et al. – that evaluated bevacizumab in patients without HHT [who had] angiodysplasias from other causes – not specifically in type 2 von Willebrand syndrome ... and did find that it was effective at causing the angiodysplasias to regress, hemoglobin to improve.
“So the non-HHT use of this agent is certainly an important one [and] we do have retrospective evidence in a small group of patients who don’t have HHT, who do have angiodysplasias and bleeding, that it may be effective as well.”
Dr. Al-Samkari reported receiving research support and/or consulting fees from Agios, Amgen, and Dova.
SOURCE: Al-Samkari H et al. ISTH 2020, Abstract OC 09.2.
Systemic bevacizumab is safe and highly effective for the management of chronic bleeding and anemia in patients with hereditary hemorrhagic telangiectasia (HHT), according to findings from an international observational study.
In 238 patients from 12 international centers who were treated with bevacizumab for a median of 12 months, mean hemoglobin levels increased by 3.2 g/dL (mean pre- and posttreatment levels, 8.6 vs. 11.8 g/dL), and epistaxis severity scores (ESS) decreased by a mean of 3.4 points (pre- and posttreatment scores, 6.8 vs. 3.4 points), Hanny Al-Samkari, MD, reported at the International Society on Thrombosis and Haemostasis virtual congress.
As established in prior studies, the minimal clinically important difference in the ESS, a well-validated 10-point bleeding score in HHT, is 0.71 points; the mean reduction seen in this study was 4.75 times that, noted Dr. Al-Samkari, a clinical investigator and hematologist at Massachusetts General Hospital, Boston.
Further, the median number of red blood cell units transfused during the first year of treatment decreased by 82%, compared with the 6 months prior to treatment (9.0 vs. 0 units), and median iron infusions decreased by 70% during the same period (8.0 vs. 2.0 infusions), he said, adding that these improvements occurred within the first 6 months of treatment and were maintained through 12 months.
Study subjects were adults with a mean age of 63 years who were treated with systemic bevacizumab, a vascular endothelial growth factor receptor (VEGF) monoclonal antibody, between 2011 and 2019 for the primary indication of moderate to severe chronic HHT-related bleeding and anemia. Treatment involved four to eight induction infusions – typically at a dose of 5 mg/kg and given 4 weeks apart – followed by bevacizumab maintenance, either as continuous or scheduled maintenance at 4-, 8-, or 12-week intervals regardless of symptoms, or on an as-needed basis, with 2-6 infusions for signs or symptoms of rebleeding.
Patients received a median of 11 infusions, and 181 received maintenance treatment, including continuous or scheduled maintenance in 136 patients and as-needed maintenance in 45 patients, Dr. Al-Samkari said.
The treatment was generally well tolerated; the most common adverse events during 344 patient-years of treatment were hypertension, fatigue, and proteinuria. No fatal treatment-related adverse events occurred, and no increase in adverse events occurred with longer treatment, he noted
Venous thromboembolism occurred in five patients, including two patients who had “provoked events immediately following joint replacement surgery,” he said.
Thirteen patients (5%) discontinued treatment – 11 for inadequate effect and 2 for side effects, he noted.
Subgroup analyses showed that outcomes were similar regardless of underlying pathogenic mutation, but among those receiving bevacizumab maintenance, the continuous approach, compared with as-needed maintenance, was associated with greater improvement in hemoglobin (10.8 vs. 12.3 g/dL) and ESS (mean, 4.96 vs. 2.88) during months 7-12 of treatment, “which is the time most reflective of the effect of maintenance,” he said.
HHT, also known as Osler-Weber-Rendu disease, is a “rare, genetic, progressive, multisystem bleeding disorder resulting from disorder of angiogenesis,” Dr. Al-Samkari explained, adding that the condition is characterized by severe, recurrent epistaxis and chronic gastrointestinal bleeding.
“Bleeding frequently leads to iron deficiency anemia, which may be severe and dependent on regular iron infusions and/or blood transfusions,” he said.
Though rare, it is the second most common bleeding disorder worldwide, with a prevalence about twice that of hemophilia A and six times that of hemophilia B.
“Despite this, it has no FDA-approved therapies,” he said. “The current mainstay of care is surgical or procedural local hemostatic intervention – which is usually temporizing – and hematological support in the form of blood and iron.”
However, given that the underlying genetic defects that cause HHT result in elevations in VEGF, targeting VEGF with existing antiangiogenic agents is a promising approach.
In fact, several centers have been using bevacizumab for several years as an off-label treatment for bleeding in this setting, and while scattered case reports and small case series suggest efficacy, no “large or definitive studies” have been conducted, and safety hasn’t been carefully evaluated, he said.
To that end, the International Hereditary Hemorrhagic Telangiectasia Intravenous Bevacizumab Investigative Team (InHIBIT) was formed. The current report, “the largest study of antiangiogenic therapy to date in HHT,” represents the results of the InHIBIT-Bleed study, the first completed by the team. The next study will address bevacizumab for the treatment of high-output cardiac failure in HHT (the InHIBIT-HF study), Dr. Al-Samkari said.
Though limited by its retrospective nature and lack of a unified treatment protocol, the InHIBIT-Bleed study provides important information and is strengthened by the large cohort size, especially given that HHT is a rare disease, and by other factors, such as the substantial number of patient-years of treatment.
“Bevacizumab was effective in the management of severe HHT-related epistaxis and GI bleeds,” he said, noting the “significant and striking improvements” on a variety of measures.
Questioned about the durability of treatment effects after treatment discontinuation, Dr. Al-Samkari said outcomes are variable, “highly patient dependent,” and “something that we really need to investigate thoroughly.”
As for the potential for anti-VEGF therapy for bleeding in certain non-HHT settings, session moderator Michael Makris, MD, professor of haemostasis and thrombosis at the University of Sheffield, England, said the possibilities are intriguing.
“I work with lots of patients with von Willebrand disease and angiodysplasia,” he said, adding that angiodysplasia-related bleeding in type 2A von Willebrand disease is a major issue.
Dr. Al-Samkari agreed that the possibility is worth exploring.
“We have looked at this in a small number of patients, and the jury is still out,” he said. “But there is a publication in Gastroenterology – Albitar et al. – that evaluated bevacizumab in patients without HHT [who had] angiodysplasias from other causes – not specifically in type 2 von Willebrand syndrome ... and did find that it was effective at causing the angiodysplasias to regress, hemoglobin to improve.
“So the non-HHT use of this agent is certainly an important one [and] we do have retrospective evidence in a small group of patients who don’t have HHT, who do have angiodysplasias and bleeding, that it may be effective as well.”
Dr. Al-Samkari reported receiving research support and/or consulting fees from Agios, Amgen, and Dova.
SOURCE: Al-Samkari H et al. ISTH 2020, Abstract OC 09.2.
FROM THE 2020 ISTH CONGRESS
Microbiome research ‘opening doors’ to new Alzheimer’s disease treatments
Research into the microbiome is yielding some positive new potential treatment options for Alzheimer’s disease, according to George T. Grossberg, MD.
“I think the growing focus on the gut-brain axis is opening doors to new Alzheimer’s disease and other brain disorders, and I think the first of a possible future generation of compounds for prevention or treatment of Alzheimer’s disease may indeed be emerging,” Dr. Grossberg said at a virtual meeting presented by Current Psychiatry and the American Academy of Clinical Psychiatrists.
Focus on the microbiome and microbiota is “a really hot, really new, really emerging area,” said Dr. Grossberg, professor in the department of psychiatry & behavioral neuroscience at Saint Louis University. But the microbiota, which is the microorganisms within a specific organ such as the colon, is sometimes confused with the microbiome – which is defined as all of the bacteria, viruses, fungi and other microorganisms within a habitat as well as their genomes and the environment around them. “These are often used interchangeably, but they’re not the same,” Dr. Grossberg said at the meeting, presented by Global Academy for Medical Education.
A person’s microbiome is unique to them, and nearly all of the microbiome is contained in the gut. A reduction in diversity of the microbiota in the digestive system has been linked to a wide variety of diseases, Dr. Grossberg explained. Conversely, a microbial imbalance or dysbiosis has been implicated in anxiety and/or depression, dementia, and certain cancers, he noted.
Bacteria that positively affect the microbiome come from two main genera: Lactobacillus and Bifidobacterium. Factors such as diet, medications, geography, stage of life, birthing process, infant feeding method, and stress can all affect a person’s microbiome. “We’re all beginning to understand that trying to manage or trying to diversify, trying to manipulate the microbiota may have a lot of remote effects – even effects on weight or diabetes, or other disorders,” Dr. Grossberg said.
Fecal microbiota transplantation (FMT), or the process of administering a donor’s fecal matter into a recipient’s intestinal tract, has proved beneficial in improving the health of patients suffering from recurrent Clostridioides difficile infection. A recent Harvard Health Letter, written by Jessica Allegretti, MD, MPH, observed that FMT is standard of care for patients with C. diff, and the procedure has a success rate of between 80% and 90%.
“It shows us very directly, in a very practical way, how addressing the dysbiosis – the imbalance of the gut microbiome – by infusing healthy bacteria may make a potential lifesaving difference,” Dr. Grossberg said.
Research is beginning to show that the link between gut microbiota and health extends to Alzheimer’s disease as well. Within the last few years, “we’ve started to understand that the microbial diversity in Alzheimer’s disease versus healthy age-matched controls is decreased,” Dr. Grossberg said.
In a study published by Nicholas M. Vogt and colleagues, there was decreased fecal microbial diversity among individuals with Alzheimer’s, compared with healthy individuals matched for age. Another study by Ping Liu, PhD, and colleagues found that patients with Alzheimer’s disease had decreased fecal microbial diversity, compared with individuals who had pre-onset amnestic mild cognitive impairment and normal cognition.
Dr. Grossberg noted that, while these studies do not prove that less fecal microbial diversity is responsible for mild cognitive impairment or Alzheimer’s disease, “it makes us think that, maybe, there’s a contributing factor.”
“What happens with the dysbiosis of the gut microbiome is increased permeability of the epithelial area of the gut, which can then lead to the gut-brain axis dysregulation and may in fact allow the selective entry of bacteria into the central nervous system because the blood-brain barrier comes to be dysfunctional,” he said.
Early evidence suggests that the gut-brain axis can affect cognition. In an animal model study, transferring the microbiota of a mouse with Alzheimer’s disease to one that had been bred to be germ-free resulted in cognitive decline – but there was no cognitive decline for germ-free mice that received a microbiota transplant from a mouse in a healthy control group. Results from another animal study showed that transferring healthy microbiota from a mouse model into a mouse with Alzheimer’s disease reduces amyloid and tau pathology. “The conclusions of these studies seems to be that microbiota mediated intestinal and systemic immune changes or aberrations seem to contribute to the pathogenesis of Alzheimer’s disease in these mouse models,” Dr. Grossberg said. “Consequently, restoring the gut microbial homeostasis may have beneficial effects on Alzheimer’s disease treatment.”
Periodontal disease also might be linked to Alzheimer’s disease, Dr. Grossberg said. Several studies have shown gingipains secreted from Porphyromonas gingivalis, which contribute to inflammation in the brain, have been found in cadavers of patients with Alzheimer’s disease (Sci Adv. 2019 Jan 23;5[1]:eaau3333). “There’s reason to think that the same changes may be occurring in the human brain with periodontal disease,” he said.
The relationship also might extend to the gut microbiota and the central nervous system. “There seems to be a direct communication, a direct relationship between normal gut physiology and healthy central nervous system functioning, and then, when you have abnormal gut function, it may result in a variety of abnormal central nervous system functions,” Dr. Grossberg said.
Studies that have examined a relationship between Alzheimer’s disease and gut microbiota have highlighted the potential of probiotics and prebiotics as a method of restoring the gut microbiota (Aging [Albany NY]. 2020 Mar 31; 12[6]:5539-50). Probiotics are popularly sold in health food aisles of grocery stores, and prebiotics are available in foods such as yogurts, tempeh, sauerkraut, and kimchi, as well as in drinks such as Kombucha tea. The effectiveness of probiotics and prebiotics also are being examined in randomized, controlled trials in patients with mild cognitive decline and mild Alzheimer’s disease, Dr. Grossberg said. One therapy, Sodium oligomannate, a marine algae–derived oral oligosaccharide, has shown effectiveness in remodeling gut microbiota and has been approved in China to treat patients with mild or moderate Alzheimer’s disease. Currently, no approved gut microbiota therapies are approved in the United States to treat Alzheimer’s disease; however, encouraging use of a prebiotic, a probiotic, or a Mediterranean diet is something clinicians might want to consider for their patients.
“The fact that we’re studying these things has really led to the notion that it may not be a bad idea for people to consume these healthy bacteria in later life, either as a way to prevent or delay, or to treat Alzheimer’s disease,” Dr. Grossberg said. “There’s really no downside.”
Global Academy and this news organization are owned by the same parent company. Dr. Grossberg reported that he is a consultant for Acadia, Alkahest, Avanir, Axsome, Biogen, BioXcel, Karuna, Lundbeck, Otsuka, Roche, and Takeda; receives research support from the National Institute on Aging, Janssen, and Roche; performs safety monitoring for EryDel, Merck, and Newron; and serves on data monitoring committees for Avanex and ITI Therapeutics.
Research into the microbiome is yielding some positive new potential treatment options for Alzheimer’s disease, according to George T. Grossberg, MD.
“I think the growing focus on the gut-brain axis is opening doors to new Alzheimer’s disease and other brain disorders, and I think the first of a possible future generation of compounds for prevention or treatment of Alzheimer’s disease may indeed be emerging,” Dr. Grossberg said at a virtual meeting presented by Current Psychiatry and the American Academy of Clinical Psychiatrists.
Focus on the microbiome and microbiota is “a really hot, really new, really emerging area,” said Dr. Grossberg, professor in the department of psychiatry & behavioral neuroscience at Saint Louis University. But the microbiota, which is the microorganisms within a specific organ such as the colon, is sometimes confused with the microbiome – which is defined as all of the bacteria, viruses, fungi and other microorganisms within a habitat as well as their genomes and the environment around them. “These are often used interchangeably, but they’re not the same,” Dr. Grossberg said at the meeting, presented by Global Academy for Medical Education.
A person’s microbiome is unique to them, and nearly all of the microbiome is contained in the gut. A reduction in diversity of the microbiota in the digestive system has been linked to a wide variety of diseases, Dr. Grossberg explained. Conversely, a microbial imbalance or dysbiosis has been implicated in anxiety and/or depression, dementia, and certain cancers, he noted.
Bacteria that positively affect the microbiome come from two main genera: Lactobacillus and Bifidobacterium. Factors such as diet, medications, geography, stage of life, birthing process, infant feeding method, and stress can all affect a person’s microbiome. “We’re all beginning to understand that trying to manage or trying to diversify, trying to manipulate the microbiota may have a lot of remote effects – even effects on weight or diabetes, or other disorders,” Dr. Grossberg said.
Fecal microbiota transplantation (FMT), or the process of administering a donor’s fecal matter into a recipient’s intestinal tract, has proved beneficial in improving the health of patients suffering from recurrent Clostridioides difficile infection. A recent Harvard Health Letter, written by Jessica Allegretti, MD, MPH, observed that FMT is standard of care for patients with C. diff, and the procedure has a success rate of between 80% and 90%.
“It shows us very directly, in a very practical way, how addressing the dysbiosis – the imbalance of the gut microbiome – by infusing healthy bacteria may make a potential lifesaving difference,” Dr. Grossberg said.
Research is beginning to show that the link between gut microbiota and health extends to Alzheimer’s disease as well. Within the last few years, “we’ve started to understand that the microbial diversity in Alzheimer’s disease versus healthy age-matched controls is decreased,” Dr. Grossberg said.
In a study published by Nicholas M. Vogt and colleagues, there was decreased fecal microbial diversity among individuals with Alzheimer’s, compared with healthy individuals matched for age. Another study by Ping Liu, PhD, and colleagues found that patients with Alzheimer’s disease had decreased fecal microbial diversity, compared with individuals who had pre-onset amnestic mild cognitive impairment and normal cognition.
Dr. Grossberg noted that, while these studies do not prove that less fecal microbial diversity is responsible for mild cognitive impairment or Alzheimer’s disease, “it makes us think that, maybe, there’s a contributing factor.”
“What happens with the dysbiosis of the gut microbiome is increased permeability of the epithelial area of the gut, which can then lead to the gut-brain axis dysregulation and may in fact allow the selective entry of bacteria into the central nervous system because the blood-brain barrier comes to be dysfunctional,” he said.
Early evidence suggests that the gut-brain axis can affect cognition. In an animal model study, transferring the microbiota of a mouse with Alzheimer’s disease to one that had been bred to be germ-free resulted in cognitive decline – but there was no cognitive decline for germ-free mice that received a microbiota transplant from a mouse in a healthy control group. Results from another animal study showed that transferring healthy microbiota from a mouse model into a mouse with Alzheimer’s disease reduces amyloid and tau pathology. “The conclusions of these studies seems to be that microbiota mediated intestinal and systemic immune changes or aberrations seem to contribute to the pathogenesis of Alzheimer’s disease in these mouse models,” Dr. Grossberg said. “Consequently, restoring the gut microbial homeostasis may have beneficial effects on Alzheimer’s disease treatment.”
Periodontal disease also might be linked to Alzheimer’s disease, Dr. Grossberg said. Several studies have shown gingipains secreted from Porphyromonas gingivalis, which contribute to inflammation in the brain, have been found in cadavers of patients with Alzheimer’s disease (Sci Adv. 2019 Jan 23;5[1]:eaau3333). “There’s reason to think that the same changes may be occurring in the human brain with periodontal disease,” he said.
The relationship also might extend to the gut microbiota and the central nervous system. “There seems to be a direct communication, a direct relationship between normal gut physiology and healthy central nervous system functioning, and then, when you have abnormal gut function, it may result in a variety of abnormal central nervous system functions,” Dr. Grossberg said.
Studies that have examined a relationship between Alzheimer’s disease and gut microbiota have highlighted the potential of probiotics and prebiotics as a method of restoring the gut microbiota (Aging [Albany NY]. 2020 Mar 31; 12[6]:5539-50). Probiotics are popularly sold in health food aisles of grocery stores, and prebiotics are available in foods such as yogurts, tempeh, sauerkraut, and kimchi, as well as in drinks such as Kombucha tea. The effectiveness of probiotics and prebiotics also are being examined in randomized, controlled trials in patients with mild cognitive decline and mild Alzheimer’s disease, Dr. Grossberg said. One therapy, Sodium oligomannate, a marine algae–derived oral oligosaccharide, has shown effectiveness in remodeling gut microbiota and has been approved in China to treat patients with mild or moderate Alzheimer’s disease. Currently, no approved gut microbiota therapies are approved in the United States to treat Alzheimer’s disease; however, encouraging use of a prebiotic, a probiotic, or a Mediterranean diet is something clinicians might want to consider for their patients.
“The fact that we’re studying these things has really led to the notion that it may not be a bad idea for people to consume these healthy bacteria in later life, either as a way to prevent or delay, or to treat Alzheimer’s disease,” Dr. Grossberg said. “There’s really no downside.”
Global Academy and this news organization are owned by the same parent company. Dr. Grossberg reported that he is a consultant for Acadia, Alkahest, Avanir, Axsome, Biogen, BioXcel, Karuna, Lundbeck, Otsuka, Roche, and Takeda; receives research support from the National Institute on Aging, Janssen, and Roche; performs safety monitoring for EryDel, Merck, and Newron; and serves on data monitoring committees for Avanex and ITI Therapeutics.
Research into the microbiome is yielding some positive new potential treatment options for Alzheimer’s disease, according to George T. Grossberg, MD.
“I think the growing focus on the gut-brain axis is opening doors to new Alzheimer’s disease and other brain disorders, and I think the first of a possible future generation of compounds for prevention or treatment of Alzheimer’s disease may indeed be emerging,” Dr. Grossberg said at a virtual meeting presented by Current Psychiatry and the American Academy of Clinical Psychiatrists.
Focus on the microbiome and microbiota is “a really hot, really new, really emerging area,” said Dr. Grossberg, professor in the department of psychiatry & behavioral neuroscience at Saint Louis University. But the microbiota, which is the microorganisms within a specific organ such as the colon, is sometimes confused with the microbiome – which is defined as all of the bacteria, viruses, fungi and other microorganisms within a habitat as well as their genomes and the environment around them. “These are often used interchangeably, but they’re not the same,” Dr. Grossberg said at the meeting, presented by Global Academy for Medical Education.
A person’s microbiome is unique to them, and nearly all of the microbiome is contained in the gut. A reduction in diversity of the microbiota in the digestive system has been linked to a wide variety of diseases, Dr. Grossberg explained. Conversely, a microbial imbalance or dysbiosis has been implicated in anxiety and/or depression, dementia, and certain cancers, he noted.
Bacteria that positively affect the microbiome come from two main genera: Lactobacillus and Bifidobacterium. Factors such as diet, medications, geography, stage of life, birthing process, infant feeding method, and stress can all affect a person’s microbiome. “We’re all beginning to understand that trying to manage or trying to diversify, trying to manipulate the microbiota may have a lot of remote effects – even effects on weight or diabetes, or other disorders,” Dr. Grossberg said.
Fecal microbiota transplantation (FMT), or the process of administering a donor’s fecal matter into a recipient’s intestinal tract, has proved beneficial in improving the health of patients suffering from recurrent Clostridioides difficile infection. A recent Harvard Health Letter, written by Jessica Allegretti, MD, MPH, observed that FMT is standard of care for patients with C. diff, and the procedure has a success rate of between 80% and 90%.
“It shows us very directly, in a very practical way, how addressing the dysbiosis – the imbalance of the gut microbiome – by infusing healthy bacteria may make a potential lifesaving difference,” Dr. Grossberg said.
Research is beginning to show that the link between gut microbiota and health extends to Alzheimer’s disease as well. Within the last few years, “we’ve started to understand that the microbial diversity in Alzheimer’s disease versus healthy age-matched controls is decreased,” Dr. Grossberg said.
In a study published by Nicholas M. Vogt and colleagues, there was decreased fecal microbial diversity among individuals with Alzheimer’s, compared with healthy individuals matched for age. Another study by Ping Liu, PhD, and colleagues found that patients with Alzheimer’s disease had decreased fecal microbial diversity, compared with individuals who had pre-onset amnestic mild cognitive impairment and normal cognition.
Dr. Grossberg noted that, while these studies do not prove that less fecal microbial diversity is responsible for mild cognitive impairment or Alzheimer’s disease, “it makes us think that, maybe, there’s a contributing factor.”
“What happens with the dysbiosis of the gut microbiome is increased permeability of the epithelial area of the gut, which can then lead to the gut-brain axis dysregulation and may in fact allow the selective entry of bacteria into the central nervous system because the blood-brain barrier comes to be dysfunctional,” he said.
Early evidence suggests that the gut-brain axis can affect cognition. In an animal model study, transferring the microbiota of a mouse with Alzheimer’s disease to one that had been bred to be germ-free resulted in cognitive decline – but there was no cognitive decline for germ-free mice that received a microbiota transplant from a mouse in a healthy control group. Results from another animal study showed that transferring healthy microbiota from a mouse model into a mouse with Alzheimer’s disease reduces amyloid and tau pathology. “The conclusions of these studies seems to be that microbiota mediated intestinal and systemic immune changes or aberrations seem to contribute to the pathogenesis of Alzheimer’s disease in these mouse models,” Dr. Grossberg said. “Consequently, restoring the gut microbial homeostasis may have beneficial effects on Alzheimer’s disease treatment.”
Periodontal disease also might be linked to Alzheimer’s disease, Dr. Grossberg said. Several studies have shown gingipains secreted from Porphyromonas gingivalis, which contribute to inflammation in the brain, have been found in cadavers of patients with Alzheimer’s disease (Sci Adv. 2019 Jan 23;5[1]:eaau3333). “There’s reason to think that the same changes may be occurring in the human brain with periodontal disease,” he said.
The relationship also might extend to the gut microbiota and the central nervous system. “There seems to be a direct communication, a direct relationship between normal gut physiology and healthy central nervous system functioning, and then, when you have abnormal gut function, it may result in a variety of abnormal central nervous system functions,” Dr. Grossberg said.
Studies that have examined a relationship between Alzheimer’s disease and gut microbiota have highlighted the potential of probiotics and prebiotics as a method of restoring the gut microbiota (Aging [Albany NY]. 2020 Mar 31; 12[6]:5539-50). Probiotics are popularly sold in health food aisles of grocery stores, and prebiotics are available in foods such as yogurts, tempeh, sauerkraut, and kimchi, as well as in drinks such as Kombucha tea. The effectiveness of probiotics and prebiotics also are being examined in randomized, controlled trials in patients with mild cognitive decline and mild Alzheimer’s disease, Dr. Grossberg said. One therapy, Sodium oligomannate, a marine algae–derived oral oligosaccharide, has shown effectiveness in remodeling gut microbiota and has been approved in China to treat patients with mild or moderate Alzheimer’s disease. Currently, no approved gut microbiota therapies are approved in the United States to treat Alzheimer’s disease; however, encouraging use of a prebiotic, a probiotic, or a Mediterranean diet is something clinicians might want to consider for their patients.
“The fact that we’re studying these things has really led to the notion that it may not be a bad idea for people to consume these healthy bacteria in later life, either as a way to prevent or delay, or to treat Alzheimer’s disease,” Dr. Grossberg said. “There’s really no downside.”
Global Academy and this news organization are owned by the same parent company. Dr. Grossberg reported that he is a consultant for Acadia, Alkahest, Avanir, Axsome, Biogen, BioXcel, Karuna, Lundbeck, Otsuka, Roche, and Takeda; receives research support from the National Institute on Aging, Janssen, and Roche; performs safety monitoring for EryDel, Merck, and Newron; and serves on data monitoring committees for Avanex and ITI Therapeutics.
FROM CP/AACP PSYCHIATRY UPDATE
A better tau blood test for diagnosing Alzheimer’s disease?
.
In one new development, experts at the University of California, San Francisco (UCSF) compared phosphorylated-tau181 (P-tau181) to a related form of tau called P-tau217 to determine which can best identify individuals with Alzheimer’s disease.
Results showed that the two biomarkers were similar overall, but P-tau 217 had a slight edge in terms of accuracy. Importantly, both tau isoforms distinguished frontotemporal lobar degeneration (FTLD).
“These new blood tests for P-tau are going to be really exciting because they will improve our ability to simply and inexpensively assess whether someone is at high risk for having Alzheimer’s disease,” said study author Adam L. Boxer, MD, PhD, professor in UCSF’s department of neurology.
With the approval of the first disease-modifying therapy for Alzheimer’s disease possibly around the corner, developing an accurate diagnostic blood test for this condition is even more urgent, added Dr. Boxer, who is also director of UCSF’s Neurosciences Clinical Research Unit and AD and FTD Clinical Trials Program.
The findings were presented at the virtual annual meeting of the Alzheimer’s Association International Conference.
Important implications
Currently, the only approved Alzheimer’s disease biomarkers are expensive positron emission tomography (PET) scans using agents that detect tau or amyloid, another hallmark Alzheimer’s disease protein, and cerebrospinal fluid levels of amyloid and tau, the measurement of which entails invasive lumbar puncture procedures. This limits the ability to easily confirm the underlying cause of dementia or cognitive impairment, which “obviously has important prognostic and therapeutic implications,” said Dr. Boxer.
Having a plasma biomarker, especially for tau, would be extremely useful. Patients with increased tau in the brain tend to exhibit Alzheimer’s disease symptoms while those with amyloid plaques do not always have clear signs, at least not immediately. “We think that P-tau is probably a better measure because it is much more closely related to symptoms of disease,” said Dr. Boxer.
Earlier this year, he and colleagues published a study in Nature Medicine showing that P-tau181 is more than three times as high in individuals with Alzheimer’s disease compared with healthy elderly people. It also differentiated Alzheimer’s disease from frontotemporal dementia (FTD). “We found that P-tau 181 was almost as good as a PET scan or lumbar puncture at identifying individuals with Alzheimer’s disease pathology in the brain,” said Dr. Boxer.
They next wanted to assess how well P-tau 217 held up as a possible biomarker.
The new retrospective study was composed of 210 participants: 37 who acted as healthy controls, 99 who had FTLD, 39 who had Alzheimer’s disease, and 35 who had mild cognitive impairment.
More accurate test
Results showed that plasma P-tau217 was increased 5.7-fold in the participants with Alzheimer’s disease compared with the healthy controls group, and increased fivefold compared with those who had FTLD (both comparisons, P < .001).
The increase in plasma P-tau181 was lower. It was increased only 4.5-times in participants with Alzheimer’s disease compared with the healthy controls and 3.8-times relative to those with FTLD (both, P < .001). In addition, P-tau217 was potentially superior in predicting whether a person had a tau positive FTP-PET brain scan.
“This newer P-tau 217 test produces very similar results to the previous test we published [on P-tau181], but might be incrementally better or slightly more accurate, and even more closely related to the signal you get with a tau PET scan,” Dr. Boxer said.
The researchers are now examining these issues in a larger group of participants (N = 617). Results for those analyses are expected to be published soon. In addition to tau and amyloid markers, the researchers are examining another potential biomarker of neurodegeneration: the triple protein neurofilament light chain.
It’s too early to say which biomarker or biomarkers will prove to be the most useful in diagnosing Alzheimer’s disease, Dr. Boxer noted. “It’s an open question whether it will be necessary to measure multiple P-taus plus beta amyloid plus neurofilament, or maybe just measuring one P-tau level will be sufficient,” he said.
Upcoming therapy?
Having a test that verifies Alzheimer’s disease is becoming all the more important now that a therapy might soon be available. Massachusetts-based biotech company Biogen has submitted aducanumab, a monoclonal antibody that targets amyloid-beta (Abeta), to the Food and Drug Administration for approval. Should that move forward, aducanumab would be the first disease-modifying therapy for Alzheimer’s disease.
“If that’s the case, it will be even more important to have simple ways to screen people, to see if they might eventually be eligible for treatment,” said Dr. Boxer. Even if the drug isn’t approved, many patients simply want to know what is causing their cognitive problems, he added. Knowing they have Alzheimer’s disease might impact their life planning. If they have mild symptoms, interventions such as exercise and reducing cardiovascular risk could improve their overall health and quality of life, he said.
If individuals have another type of dementia, such as FTLD, that, too, might determine a different approach. Some forms of FTLD are caused by “completely different biological processes,” which are now being studied, Dr. Boxer said. So knowing that patients have this condition would allow them to participate in relevant clinical trials.
Exciting aspect
Having a tau blood test will also help those in underserviced and minority communities who can’t easily access memory specialists, Dr. Boxer noted. “It might allow them to access care, and get help much more easily, and that is a really exciting aspect of this new technology,” he said. It’s not clear when such blood tests will be on the market, although many companies are “scrambling” to make them available, said Dr. Boxer.
P-tau217 also holds promise as a marker for early Alzheimer’s disease pathology, according to another study presented at AAIC 2020. A Swedish research team measured P-tau217 in more than 1,000 participants, including those who were unimpaired and those with mild cognitive impairment, Alzheimer’s disease dementia, or non-Alzheimer’s disease neurodegenerative diseases.
Results showed that plasma P-tau217 levels increase in early stages of Alzheimer’s disease when insoluble tau aggregates are not yet detectable with PET. They also predict subsequent increases in tau-PET, as well as conversion to Alzheimer’s disease dementia.
‘Incredible breakthrough’
Commenting on the research, Howard Fillit, MD, founding executive director and chief science officer of the Alzheimer’s Drug Discovery Foundation, called the study amazing and “an incredible breakthrough.
“Researchers are able to detect disease up to 20 years before symptoms. The blood test has very good characteristics in terms of sensitivity and specificity. It correlates with the spinal fluid, it’s better than the PET imaging, it correlates with the amyloid test, and the results are being confirmed in many different cohorts,” said Dr. Fillit, who was not involved with the research.
A tau blood test, especially for P-tau 217, has the potential to be as important to determining dementia risk as cholesterol is to gauging heart disease risk, he added.
Having a tau blood test will “make our clinical trials much more precise and more efficient and reduce costs tremendously,” Dr. Fillit said, adding that he thinks tau blood tests might come to market as early as within a year.
Also commenting on the research, Rebecca M. Edelmayer, PhD, director of scientific engagement for the Alzheimer’s Association, said the new studies illustrate the rapid progress being made “in the blood biomarker space.”
Even 5 years ago, researchers would “never have thought” that blood biomarkers could be used as a tool to detect brain changes related to Alzheimer’s disease, said Dr. Edelmayer.
These new studies are “filling a gap in our understanding around tau” in Alzheimer’s disease and other neurodegenerative diseases, she said. “Being able to distinguish between diseases is going to be very, very crucial for clinicians in the future,” she added.
Dr. Edelmayer foresees that in the future there will be a panel of blood biomarkers in addition to imaging tests to help clinicians make an accurate diagnosis.
The study was supported by the National Institutes of Health and the Tau Research Consortium. Dr. Boxer disclosed that the blood p-tau test was done as part of a research collaboration between UCSF and Eli Lilly. Dr. Fillit and Dr. Edelmayer have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
.
In one new development, experts at the University of California, San Francisco (UCSF) compared phosphorylated-tau181 (P-tau181) to a related form of tau called P-tau217 to determine which can best identify individuals with Alzheimer’s disease.
Results showed that the two biomarkers were similar overall, but P-tau 217 had a slight edge in terms of accuracy. Importantly, both tau isoforms distinguished frontotemporal lobar degeneration (FTLD).
“These new blood tests for P-tau are going to be really exciting because they will improve our ability to simply and inexpensively assess whether someone is at high risk for having Alzheimer’s disease,” said study author Adam L. Boxer, MD, PhD, professor in UCSF’s department of neurology.
With the approval of the first disease-modifying therapy for Alzheimer’s disease possibly around the corner, developing an accurate diagnostic blood test for this condition is even more urgent, added Dr. Boxer, who is also director of UCSF’s Neurosciences Clinical Research Unit and AD and FTD Clinical Trials Program.
The findings were presented at the virtual annual meeting of the Alzheimer’s Association International Conference.
Important implications
Currently, the only approved Alzheimer’s disease biomarkers are expensive positron emission tomography (PET) scans using agents that detect tau or amyloid, another hallmark Alzheimer’s disease protein, and cerebrospinal fluid levels of amyloid and tau, the measurement of which entails invasive lumbar puncture procedures. This limits the ability to easily confirm the underlying cause of dementia or cognitive impairment, which “obviously has important prognostic and therapeutic implications,” said Dr. Boxer.
Having a plasma biomarker, especially for tau, would be extremely useful. Patients with increased tau in the brain tend to exhibit Alzheimer’s disease symptoms while those with amyloid plaques do not always have clear signs, at least not immediately. “We think that P-tau is probably a better measure because it is much more closely related to symptoms of disease,” said Dr. Boxer.
Earlier this year, he and colleagues published a study in Nature Medicine showing that P-tau181 is more than three times as high in individuals with Alzheimer’s disease compared with healthy elderly people. It also differentiated Alzheimer’s disease from frontotemporal dementia (FTD). “We found that P-tau 181 was almost as good as a PET scan or lumbar puncture at identifying individuals with Alzheimer’s disease pathology in the brain,” said Dr. Boxer.
They next wanted to assess how well P-tau 217 held up as a possible biomarker.
The new retrospective study was composed of 210 participants: 37 who acted as healthy controls, 99 who had FTLD, 39 who had Alzheimer’s disease, and 35 who had mild cognitive impairment.
More accurate test
Results showed that plasma P-tau217 was increased 5.7-fold in the participants with Alzheimer’s disease compared with the healthy controls group, and increased fivefold compared with those who had FTLD (both comparisons, P < .001).
The increase in plasma P-tau181 was lower. It was increased only 4.5-times in participants with Alzheimer’s disease compared with the healthy controls and 3.8-times relative to those with FTLD (both, P < .001). In addition, P-tau217 was potentially superior in predicting whether a person had a tau positive FTP-PET brain scan.
“This newer P-tau 217 test produces very similar results to the previous test we published [on P-tau181], but might be incrementally better or slightly more accurate, and even more closely related to the signal you get with a tau PET scan,” Dr. Boxer said.
The researchers are now examining these issues in a larger group of participants (N = 617). Results for those analyses are expected to be published soon. In addition to tau and amyloid markers, the researchers are examining another potential biomarker of neurodegeneration: the triple protein neurofilament light chain.
It’s too early to say which biomarker or biomarkers will prove to be the most useful in diagnosing Alzheimer’s disease, Dr. Boxer noted. “It’s an open question whether it will be necessary to measure multiple P-taus plus beta amyloid plus neurofilament, or maybe just measuring one P-tau level will be sufficient,” he said.
Upcoming therapy?
Having a test that verifies Alzheimer’s disease is becoming all the more important now that a therapy might soon be available. Massachusetts-based biotech company Biogen has submitted aducanumab, a monoclonal antibody that targets amyloid-beta (Abeta), to the Food and Drug Administration for approval. Should that move forward, aducanumab would be the first disease-modifying therapy for Alzheimer’s disease.
“If that’s the case, it will be even more important to have simple ways to screen people, to see if they might eventually be eligible for treatment,” said Dr. Boxer. Even if the drug isn’t approved, many patients simply want to know what is causing their cognitive problems, he added. Knowing they have Alzheimer’s disease might impact their life planning. If they have mild symptoms, interventions such as exercise and reducing cardiovascular risk could improve their overall health and quality of life, he said.
If individuals have another type of dementia, such as FTLD, that, too, might determine a different approach. Some forms of FTLD are caused by “completely different biological processes,” which are now being studied, Dr. Boxer said. So knowing that patients have this condition would allow them to participate in relevant clinical trials.
Exciting aspect
Having a tau blood test will also help those in underserviced and minority communities who can’t easily access memory specialists, Dr. Boxer noted. “It might allow them to access care, and get help much more easily, and that is a really exciting aspect of this new technology,” he said. It’s not clear when such blood tests will be on the market, although many companies are “scrambling” to make them available, said Dr. Boxer.
P-tau217 also holds promise as a marker for early Alzheimer’s disease pathology, according to another study presented at AAIC 2020. A Swedish research team measured P-tau217 in more than 1,000 participants, including those who were unimpaired and those with mild cognitive impairment, Alzheimer’s disease dementia, or non-Alzheimer’s disease neurodegenerative diseases.
Results showed that plasma P-tau217 levels increase in early stages of Alzheimer’s disease when insoluble tau aggregates are not yet detectable with PET. They also predict subsequent increases in tau-PET, as well as conversion to Alzheimer’s disease dementia.
‘Incredible breakthrough’
Commenting on the research, Howard Fillit, MD, founding executive director and chief science officer of the Alzheimer’s Drug Discovery Foundation, called the study amazing and “an incredible breakthrough.
“Researchers are able to detect disease up to 20 years before symptoms. The blood test has very good characteristics in terms of sensitivity and specificity. It correlates with the spinal fluid, it’s better than the PET imaging, it correlates with the amyloid test, and the results are being confirmed in many different cohorts,” said Dr. Fillit, who was not involved with the research.
A tau blood test, especially for P-tau 217, has the potential to be as important to determining dementia risk as cholesterol is to gauging heart disease risk, he added.
Having a tau blood test will “make our clinical trials much more precise and more efficient and reduce costs tremendously,” Dr. Fillit said, adding that he thinks tau blood tests might come to market as early as within a year.
Also commenting on the research, Rebecca M. Edelmayer, PhD, director of scientific engagement for the Alzheimer’s Association, said the new studies illustrate the rapid progress being made “in the blood biomarker space.”
Even 5 years ago, researchers would “never have thought” that blood biomarkers could be used as a tool to detect brain changes related to Alzheimer’s disease, said Dr. Edelmayer.
These new studies are “filling a gap in our understanding around tau” in Alzheimer’s disease and other neurodegenerative diseases, she said. “Being able to distinguish between diseases is going to be very, very crucial for clinicians in the future,” she added.
Dr. Edelmayer foresees that in the future there will be a panel of blood biomarkers in addition to imaging tests to help clinicians make an accurate diagnosis.
The study was supported by the National Institutes of Health and the Tau Research Consortium. Dr. Boxer disclosed that the blood p-tau test was done as part of a research collaboration between UCSF and Eli Lilly. Dr. Fillit and Dr. Edelmayer have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
.
In one new development, experts at the University of California, San Francisco (UCSF) compared phosphorylated-tau181 (P-tau181) to a related form of tau called P-tau217 to determine which can best identify individuals with Alzheimer’s disease.
Results showed that the two biomarkers were similar overall, but P-tau 217 had a slight edge in terms of accuracy. Importantly, both tau isoforms distinguished frontotemporal lobar degeneration (FTLD).
“These new blood tests for P-tau are going to be really exciting because they will improve our ability to simply and inexpensively assess whether someone is at high risk for having Alzheimer’s disease,” said study author Adam L. Boxer, MD, PhD, professor in UCSF’s department of neurology.
With the approval of the first disease-modifying therapy for Alzheimer’s disease possibly around the corner, developing an accurate diagnostic blood test for this condition is even more urgent, added Dr. Boxer, who is also director of UCSF’s Neurosciences Clinical Research Unit and AD and FTD Clinical Trials Program.
The findings were presented at the virtual annual meeting of the Alzheimer’s Association International Conference.
Important implications
Currently, the only approved Alzheimer’s disease biomarkers are expensive positron emission tomography (PET) scans using agents that detect tau or amyloid, another hallmark Alzheimer’s disease protein, and cerebrospinal fluid levels of amyloid and tau, the measurement of which entails invasive lumbar puncture procedures. This limits the ability to easily confirm the underlying cause of dementia or cognitive impairment, which “obviously has important prognostic and therapeutic implications,” said Dr. Boxer.
Having a plasma biomarker, especially for tau, would be extremely useful. Patients with increased tau in the brain tend to exhibit Alzheimer’s disease symptoms while those with amyloid plaques do not always have clear signs, at least not immediately. “We think that P-tau is probably a better measure because it is much more closely related to symptoms of disease,” said Dr. Boxer.
Earlier this year, he and colleagues published a study in Nature Medicine showing that P-tau181 is more than three times as high in individuals with Alzheimer’s disease compared with healthy elderly people. It also differentiated Alzheimer’s disease from frontotemporal dementia (FTD). “We found that P-tau 181 was almost as good as a PET scan or lumbar puncture at identifying individuals with Alzheimer’s disease pathology in the brain,” said Dr. Boxer.
They next wanted to assess how well P-tau 217 held up as a possible biomarker.
The new retrospective study was composed of 210 participants: 37 who acted as healthy controls, 99 who had FTLD, 39 who had Alzheimer’s disease, and 35 who had mild cognitive impairment.
More accurate test
Results showed that plasma P-tau217 was increased 5.7-fold in the participants with Alzheimer’s disease compared with the healthy controls group, and increased fivefold compared with those who had FTLD (both comparisons, P < .001).
The increase in plasma P-tau181 was lower. It was increased only 4.5-times in participants with Alzheimer’s disease compared with the healthy controls and 3.8-times relative to those with FTLD (both, P < .001). In addition, P-tau217 was potentially superior in predicting whether a person had a tau positive FTP-PET brain scan.
“This newer P-tau 217 test produces very similar results to the previous test we published [on P-tau181], but might be incrementally better or slightly more accurate, and even more closely related to the signal you get with a tau PET scan,” Dr. Boxer said.
The researchers are now examining these issues in a larger group of participants (N = 617). Results for those analyses are expected to be published soon. In addition to tau and amyloid markers, the researchers are examining another potential biomarker of neurodegeneration: the triple protein neurofilament light chain.
It’s too early to say which biomarker or biomarkers will prove to be the most useful in diagnosing Alzheimer’s disease, Dr. Boxer noted. “It’s an open question whether it will be necessary to measure multiple P-taus plus beta amyloid plus neurofilament, or maybe just measuring one P-tau level will be sufficient,” he said.
Upcoming therapy?
Having a test that verifies Alzheimer’s disease is becoming all the more important now that a therapy might soon be available. Massachusetts-based biotech company Biogen has submitted aducanumab, a monoclonal antibody that targets amyloid-beta (Abeta), to the Food and Drug Administration for approval. Should that move forward, aducanumab would be the first disease-modifying therapy for Alzheimer’s disease.
“If that’s the case, it will be even more important to have simple ways to screen people, to see if they might eventually be eligible for treatment,” said Dr. Boxer. Even if the drug isn’t approved, many patients simply want to know what is causing their cognitive problems, he added. Knowing they have Alzheimer’s disease might impact their life planning. If they have mild symptoms, interventions such as exercise and reducing cardiovascular risk could improve their overall health and quality of life, he said.
If individuals have another type of dementia, such as FTLD, that, too, might determine a different approach. Some forms of FTLD are caused by “completely different biological processes,” which are now being studied, Dr. Boxer said. So knowing that patients have this condition would allow them to participate in relevant clinical trials.
Exciting aspect
Having a tau blood test will also help those in underserviced and minority communities who can’t easily access memory specialists, Dr. Boxer noted. “It might allow them to access care, and get help much more easily, and that is a really exciting aspect of this new technology,” he said. It’s not clear when such blood tests will be on the market, although many companies are “scrambling” to make them available, said Dr. Boxer.
P-tau217 also holds promise as a marker for early Alzheimer’s disease pathology, according to another study presented at AAIC 2020. A Swedish research team measured P-tau217 in more than 1,000 participants, including those who were unimpaired and those with mild cognitive impairment, Alzheimer’s disease dementia, or non-Alzheimer’s disease neurodegenerative diseases.
Results showed that plasma P-tau217 levels increase in early stages of Alzheimer’s disease when insoluble tau aggregates are not yet detectable with PET. They also predict subsequent increases in tau-PET, as well as conversion to Alzheimer’s disease dementia.
‘Incredible breakthrough’
Commenting on the research, Howard Fillit, MD, founding executive director and chief science officer of the Alzheimer’s Drug Discovery Foundation, called the study amazing and “an incredible breakthrough.
“Researchers are able to detect disease up to 20 years before symptoms. The blood test has very good characteristics in terms of sensitivity and specificity. It correlates with the spinal fluid, it’s better than the PET imaging, it correlates with the amyloid test, and the results are being confirmed in many different cohorts,” said Dr. Fillit, who was not involved with the research.
A tau blood test, especially for P-tau 217, has the potential to be as important to determining dementia risk as cholesterol is to gauging heart disease risk, he added.
Having a tau blood test will “make our clinical trials much more precise and more efficient and reduce costs tremendously,” Dr. Fillit said, adding that he thinks tau blood tests might come to market as early as within a year.
Also commenting on the research, Rebecca M. Edelmayer, PhD, director of scientific engagement for the Alzheimer’s Association, said the new studies illustrate the rapid progress being made “in the blood biomarker space.”
Even 5 years ago, researchers would “never have thought” that blood biomarkers could be used as a tool to detect brain changes related to Alzheimer’s disease, said Dr. Edelmayer.
These new studies are “filling a gap in our understanding around tau” in Alzheimer’s disease and other neurodegenerative diseases, she said. “Being able to distinguish between diseases is going to be very, very crucial for clinicians in the future,” she added.
Dr. Edelmayer foresees that in the future there will be a panel of blood biomarkers in addition to imaging tests to help clinicians make an accurate diagnosis.
The study was supported by the National Institutes of Health and the Tau Research Consortium. Dr. Boxer disclosed that the blood p-tau test was done as part of a research collaboration between UCSF and Eli Lilly. Dr. Fillit and Dr. Edelmayer have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
FROM AAIC 2020
Postmenopausal use of estrogen alone lowers breast cancer cases, deaths
A new follow-up study of menopausal hormone therapy found that prior use of conjugated equine estrogen (CEE) decreased both breast cancer incidence and mortality, while prior use of CEE plus medroxyprogesterone acetate (MPA) was associated with an increase in incidence.
“Prior use of CEE alone is, to our knowledge, the first pharmacologic intervention demonstrated to be associated with a statistically significantly reduction in deaths from breast cancer,” wrote Rowan T. Chlebowski, MD, PhD, of the Lundquist Institute for Biomedical Innovation in Torrance, Calif., and his coauthors. The study was published July 28 in JAMA.
To further investigate the outcomes of the Women’s Health Initiative in regard to hormone therapy and breast cancer risk, the researchers analyzed the long-term follow-up of two randomized trials that included 27,347 postmenopausal women with no prior breast cancer and negative mammograms at baseline. Their mean (SD) age was 63.4 (7.2) years. Enrollment took place from 1993 to 1998; participants were contacted for follow-up every 6 months through 2005 and annually from then on. Mortality data were gathered from follow-up and the National Death Index.
The first trial included 16,608 women with a uterus. Among these women, 8,506 received 0.625 mg/day of CEE plus 2.5 mg/day of MPA, and 8,102 received placebo. The second trial included 10,739 women who’d gotten a hysterectomy, 5,310 of whom received 0.625 mg/day of CEE alone and 5,429 of whom received placebo. The first trial ended in 2002 after a median intervention period of 5.6 years, and the second trial ended in 2004 after a period of 7.2 years.
An analysis in 2015 found that CEE alone was associated with lower risk of breast cancer and CEE plus MPA was associated with increased risk.
The current analysis confirmed that, after a median of 20.3 years of follow-up, and with mortality data now available for more than 98% of participants, CEE alone was associated with fewer cases of breast cancer (238 cases, annualized rate 0.30%), compared with placebo (296 cases, annualized rate 0.37%; hazard ratio 0.78; 95% confidence interval, 0.65-0.93; P = .005).
Furthermore, CEE alone was also associated with lower mortality (30 deaths, annualized mortality rate 0.031%), compared with placebo (46 deaths, annualized mortality rate 0.046%; HR 0.60; 95% CI, 0.37-0.97; P = .04).
By comparison, CEE plus MPA was linked with more cases of breast cancer (584 cases, annualized rate 0.45%) than placebo (447 cases, annualized rate 0.36%; HR 1.28; 95% CI, 1.13-1.45; P < .001). In regard to mortality, there was no statistically significant difference between CEE plus MPA (71 deaths, annualized mortality rate 0.045%) and placebo (53 deaths, annualized mortality rate 0.035%; HR 1.35; 95% CI, 0.94-1.95; P = .11).
“The big thing to think about is estrogen alone reducing breast cancer mortality by 40%,” said Dr. Chlebowski in an interview. “None of the other interventions, including tamoxifen, had any change on mortality. This should change the way we look at breast cancer prevention, though we might have to be a little creative about it. I think you have to be a little away from menopause for it to reduce breast cancer. But we wanted to start that debate.
“On the other hand,” he said, “a woman takes estrogen plus progestin and when you look at that curve, it’s staying about 25% increased. You take it for 5.6 years and the increase continues through 20 years, so you’re maybe buying a lifetime of increase in breast cancer by taking estrogen plus progestin for 5 years.”
He also highlighted the comprehensiveness of the mortality data, noting that “when you hook up to the National Death Index, they find 98% of all deaths in the United States. That’s really remarkable; you retain the whole power of the randomization. It means our data, between the death index and our follow-up of participants, is essentially complete.”
Use of hormone therapy, and decoding the outcomes, remains ‘complex’
Decades after the data were gathered from the Women’s Health Initiative clinical trials, they continue to assist researchers and patients alike, wrote Christina A. Minami, MD, of Brigham and Women’s Hospital in Boston and Rachel A. Freedman, MD, of the Dana-Farber Cancer Institute in Boston, in an accompanying editorial.
That said, in regard to the findings of this latest analysis, “many questions still remain on whether (and how) a hormone therapy intervention that occurred many years earlier may continue to affect breast cancer risk and mortality at 20 years,” they wrote. They noted that it’s “impossible” to isolate how exposure to certain therapies can impact long-term outcomes, and that a high percentage of patients who discontinued the drugs during each trial muddy the waters even further.
“Decisions to initiate these medications remain complex,” they added, emphasizing that breast cancer risk is just one of many factors that physicians must consider when considering hormone therapy for their patients.
Dr. Chlebowski and his coauthors acknowledged their study’s limitations, including the use of very specifically administered and formulated dosages making their findings “not necessarily generalizable to other preparations.” In addition, they noted the significant percentage of patients – 54% with CEE alone and 42% with CEE plus MPA – who discontinued drug usage during their respective trials.
The Women’s Health Initiative is supported by the National Institutes of Health and the Department of Health and Human Services. The authors reported numerous potential conflicts of interest, including receiving personal fees and grants from various government organizations, foundations, and pharmaceutical companies. The editorial’s authors reported no conflicts of interest.
SOURCE: Chlebowski RT et al. JAMA. 2020 Jul 28. doi: 10.1001/jama.2020.9482.
A new follow-up study of menopausal hormone therapy found that prior use of conjugated equine estrogen (CEE) decreased both breast cancer incidence and mortality, while prior use of CEE plus medroxyprogesterone acetate (MPA) was associated with an increase in incidence.
“Prior use of CEE alone is, to our knowledge, the first pharmacologic intervention demonstrated to be associated with a statistically significantly reduction in deaths from breast cancer,” wrote Rowan T. Chlebowski, MD, PhD, of the Lundquist Institute for Biomedical Innovation in Torrance, Calif., and his coauthors. The study was published July 28 in JAMA.
To further investigate the outcomes of the Women’s Health Initiative in regard to hormone therapy and breast cancer risk, the researchers analyzed the long-term follow-up of two randomized trials that included 27,347 postmenopausal women with no prior breast cancer and negative mammograms at baseline. Their mean (SD) age was 63.4 (7.2) years. Enrollment took place from 1993 to 1998; participants were contacted for follow-up every 6 months through 2005 and annually from then on. Mortality data were gathered from follow-up and the National Death Index.
The first trial included 16,608 women with a uterus. Among these women, 8,506 received 0.625 mg/day of CEE plus 2.5 mg/day of MPA, and 8,102 received placebo. The second trial included 10,739 women who’d gotten a hysterectomy, 5,310 of whom received 0.625 mg/day of CEE alone and 5,429 of whom received placebo. The first trial ended in 2002 after a median intervention period of 5.6 years, and the second trial ended in 2004 after a period of 7.2 years.
An analysis in 2015 found that CEE alone was associated with lower risk of breast cancer and CEE plus MPA was associated with increased risk.
The current analysis confirmed that, after a median of 20.3 years of follow-up, and with mortality data now available for more than 98% of participants, CEE alone was associated with fewer cases of breast cancer (238 cases, annualized rate 0.30%), compared with placebo (296 cases, annualized rate 0.37%; hazard ratio 0.78; 95% confidence interval, 0.65-0.93; P = .005).
Furthermore, CEE alone was also associated with lower mortality (30 deaths, annualized mortality rate 0.031%), compared with placebo (46 deaths, annualized mortality rate 0.046%; HR 0.60; 95% CI, 0.37-0.97; P = .04).
By comparison, CEE plus MPA was linked with more cases of breast cancer (584 cases, annualized rate 0.45%) than placebo (447 cases, annualized rate 0.36%; HR 1.28; 95% CI, 1.13-1.45; P < .001). In regard to mortality, there was no statistically significant difference between CEE plus MPA (71 deaths, annualized mortality rate 0.045%) and placebo (53 deaths, annualized mortality rate 0.035%; HR 1.35; 95% CI, 0.94-1.95; P = .11).
“The big thing to think about is estrogen alone reducing breast cancer mortality by 40%,” said Dr. Chlebowski in an interview. “None of the other interventions, including tamoxifen, had any change on mortality. This should change the way we look at breast cancer prevention, though we might have to be a little creative about it. I think you have to be a little away from menopause for it to reduce breast cancer. But we wanted to start that debate.
“On the other hand,” he said, “a woman takes estrogen plus progestin and when you look at that curve, it’s staying about 25% increased. You take it for 5.6 years and the increase continues through 20 years, so you’re maybe buying a lifetime of increase in breast cancer by taking estrogen plus progestin for 5 years.”
He also highlighted the comprehensiveness of the mortality data, noting that “when you hook up to the National Death Index, they find 98% of all deaths in the United States. That’s really remarkable; you retain the whole power of the randomization. It means our data, between the death index and our follow-up of participants, is essentially complete.”
Use of hormone therapy, and decoding the outcomes, remains ‘complex’
Decades after the data were gathered from the Women’s Health Initiative clinical trials, they continue to assist researchers and patients alike, wrote Christina A. Minami, MD, of Brigham and Women’s Hospital in Boston and Rachel A. Freedman, MD, of the Dana-Farber Cancer Institute in Boston, in an accompanying editorial.
That said, in regard to the findings of this latest analysis, “many questions still remain on whether (and how) a hormone therapy intervention that occurred many years earlier may continue to affect breast cancer risk and mortality at 20 years,” they wrote. They noted that it’s “impossible” to isolate how exposure to certain therapies can impact long-term outcomes, and that a high percentage of patients who discontinued the drugs during each trial muddy the waters even further.
“Decisions to initiate these medications remain complex,” they added, emphasizing that breast cancer risk is just one of many factors that physicians must consider when considering hormone therapy for their patients.
Dr. Chlebowski and his coauthors acknowledged their study’s limitations, including the use of very specifically administered and formulated dosages making their findings “not necessarily generalizable to other preparations.” In addition, they noted the significant percentage of patients – 54% with CEE alone and 42% with CEE plus MPA – who discontinued drug usage during their respective trials.
The Women’s Health Initiative is supported by the National Institutes of Health and the Department of Health and Human Services. The authors reported numerous potential conflicts of interest, including receiving personal fees and grants from various government organizations, foundations, and pharmaceutical companies. The editorial’s authors reported no conflicts of interest.
SOURCE: Chlebowski RT et al. JAMA. 2020 Jul 28. doi: 10.1001/jama.2020.9482.
A new follow-up study of menopausal hormone therapy found that prior use of conjugated equine estrogen (CEE) decreased both breast cancer incidence and mortality, while prior use of CEE plus medroxyprogesterone acetate (MPA) was associated with an increase in incidence.
“Prior use of CEE alone is, to our knowledge, the first pharmacologic intervention demonstrated to be associated with a statistically significantly reduction in deaths from breast cancer,” wrote Rowan T. Chlebowski, MD, PhD, of the Lundquist Institute for Biomedical Innovation in Torrance, Calif., and his coauthors. The study was published July 28 in JAMA.
To further investigate the outcomes of the Women’s Health Initiative in regard to hormone therapy and breast cancer risk, the researchers analyzed the long-term follow-up of two randomized trials that included 27,347 postmenopausal women with no prior breast cancer and negative mammograms at baseline. Their mean (SD) age was 63.4 (7.2) years. Enrollment took place from 1993 to 1998; participants were contacted for follow-up every 6 months through 2005 and annually from then on. Mortality data were gathered from follow-up and the National Death Index.
The first trial included 16,608 women with a uterus. Among these women, 8,506 received 0.625 mg/day of CEE plus 2.5 mg/day of MPA, and 8,102 received placebo. The second trial included 10,739 women who’d gotten a hysterectomy, 5,310 of whom received 0.625 mg/day of CEE alone and 5,429 of whom received placebo. The first trial ended in 2002 after a median intervention period of 5.6 years, and the second trial ended in 2004 after a period of 7.2 years.
An analysis in 2015 found that CEE alone was associated with lower risk of breast cancer and CEE plus MPA was associated with increased risk.
The current analysis confirmed that, after a median of 20.3 years of follow-up, and with mortality data now available for more than 98% of participants, CEE alone was associated with fewer cases of breast cancer (238 cases, annualized rate 0.30%), compared with placebo (296 cases, annualized rate 0.37%; hazard ratio 0.78; 95% confidence interval, 0.65-0.93; P = .005).
Furthermore, CEE alone was also associated with lower mortality (30 deaths, annualized mortality rate 0.031%), compared with placebo (46 deaths, annualized mortality rate 0.046%; HR 0.60; 95% CI, 0.37-0.97; P = .04).
By comparison, CEE plus MPA was linked with more cases of breast cancer (584 cases, annualized rate 0.45%) than placebo (447 cases, annualized rate 0.36%; HR 1.28; 95% CI, 1.13-1.45; P < .001). In regard to mortality, there was no statistically significant difference between CEE plus MPA (71 deaths, annualized mortality rate 0.045%) and placebo (53 deaths, annualized mortality rate 0.035%; HR 1.35; 95% CI, 0.94-1.95; P = .11).
“The big thing to think about is estrogen alone reducing breast cancer mortality by 40%,” said Dr. Chlebowski in an interview. “None of the other interventions, including tamoxifen, had any change on mortality. This should change the way we look at breast cancer prevention, though we might have to be a little creative about it. I think you have to be a little away from menopause for it to reduce breast cancer. But we wanted to start that debate.
“On the other hand,” he said, “a woman takes estrogen plus progestin and when you look at that curve, it’s staying about 25% increased. You take it for 5.6 years and the increase continues through 20 years, so you’re maybe buying a lifetime of increase in breast cancer by taking estrogen plus progestin for 5 years.”
He also highlighted the comprehensiveness of the mortality data, noting that “when you hook up to the National Death Index, they find 98% of all deaths in the United States. That’s really remarkable; you retain the whole power of the randomization. It means our data, between the death index and our follow-up of participants, is essentially complete.”
Use of hormone therapy, and decoding the outcomes, remains ‘complex’
Decades after the data were gathered from the Women’s Health Initiative clinical trials, they continue to assist researchers and patients alike, wrote Christina A. Minami, MD, of Brigham and Women’s Hospital in Boston and Rachel A. Freedman, MD, of the Dana-Farber Cancer Institute in Boston, in an accompanying editorial.
That said, in regard to the findings of this latest analysis, “many questions still remain on whether (and how) a hormone therapy intervention that occurred many years earlier may continue to affect breast cancer risk and mortality at 20 years,” they wrote. They noted that it’s “impossible” to isolate how exposure to certain therapies can impact long-term outcomes, and that a high percentage of patients who discontinued the drugs during each trial muddy the waters even further.
“Decisions to initiate these medications remain complex,” they added, emphasizing that breast cancer risk is just one of many factors that physicians must consider when considering hormone therapy for their patients.
Dr. Chlebowski and his coauthors acknowledged their study’s limitations, including the use of very specifically administered and formulated dosages making their findings “not necessarily generalizable to other preparations.” In addition, they noted the significant percentage of patients – 54% with CEE alone and 42% with CEE plus MPA – who discontinued drug usage during their respective trials.
The Women’s Health Initiative is supported by the National Institutes of Health and the Department of Health and Human Services. The authors reported numerous potential conflicts of interest, including receiving personal fees and grants from various government organizations, foundations, and pharmaceutical companies. The editorial’s authors reported no conflicts of interest.
SOURCE: Chlebowski RT et al. JAMA. 2020 Jul 28. doi: 10.1001/jama.2020.9482.
FROM JAMA
More U.S. cardiologists opting for larger practices
U.S. cardiologists are increasingly opting out of solo or small practices, and joining larger practices, according to a new analysis of U.S. data from 2013 and 2017.
In 2013, 34.2% of U.S. cardiologists worked in practices of five or fewer cardiologists. That number dropped to 27% by 2017. On the flip side, the proportion working in practices with 25 cardiologists or more rose from 26% in 2013 to 35.8% in 2017.
“This is a trend we’re seeing across health care – hospitals are merging and they’re acquiring physician practices, primary care doctors are joining larger practices, too – so to some extent it seems that cardiologists are just responding to changes in the market structure where they practice,” said Jose F. Figueroa, MD, MPH, of Harvard T.H. Chan School of Public Health and Brigham & Women’s Hospital, Boston.
Dr. Figueroa and colleagues published their findings as a research brief for the Aug. 4 issue of the Journal of the American College of Cardiology.
The average number of cardiologists in practice together rose from 3.6 in 2013 to 4.3 in 2017. This trend was less obvious in rural areas (2.05 to 2.20) than in urban areas (3.67 to 4.38).
The smallest change was seen in the mid-size practice tier. In 2013, 22.9% of cardiologists worked in a practice that included 11 to 24 cardiologists, and in 2017, the proportion was 23.2%.
To determine practices sizes, Dr. Figueroa and colleagues used publicly available data from 2013 and 2017 from the Centers for Medicare & Medicaid Services’ Physician Compare, a website that helps patients find and compare clinicians and groups enrolled in Medicare.
Market level variables were obtained from the Dartmouth Atlas Project, which uses CMS data to provide information and analysis about national, regional, and local health care markets, as well as hospitals and their affiliated physicians.
Market forces drive practice patterns
The investigators had no direct data from which to ascertain the reasons why cardiologists have tended to move from smaller to larger practices, but they did conduct a multivariable linear regression analysis to better understand possible market-level factors that may be influencing these trends.
What they found was that as hospital market concentration increased, practice sizes also increased. They found no association between any community-level and physician-level factors and changes in practice size.
So, for example, greater growth in the number of cardiologists in practice together was not associated with age or sex.
“It seems that cardiologists are responding to changes in the market structure where they practice, and in particular, to hospital market concentration. This is all in an effort basically to have more market power, which in part means better bargaining power when they’re negotiating with payers,” said Dr. Figueroa.
He also suggested that joining a large practice is almost a necessity these days given the administrative burdens imposed by value-based care initiatives and their attendant quality measure reporting.
“There are stringent requirements for electronic health records and a huge administrative burden related to requirements to ensure compliance and report on quality measures,” said Dr. Figueroa.
“And then there are also all of these new ‘alternative payment’ models to figure out, like accountable care organizations and bundled payments, so you can imagine that if you’re a solo practitioner, it would be really hard to manage all of these details yourself and still ensure you’re taking care of your patient.
“As a cardiologist you need to invest in a bunch of resources, including a workforce to help you manage all the quality measures and keeping track of patients, ensuring they all get their blood pressures checked on time, etc.,” he said.
Anecdotally, Dr. Figueroa suggests it’s also a quality-of-life decision for many cardiologists. “In terms of physician burnout, when you’re a solo practitioner or in a small practice, it’s really hard to go on vacation and find coverage.”
Larry Sobal, MBA, MHA, the CEO of the Heart and Vascular Institute of Wisconsin, agrees that this consolidation is in large part a reflection of the trend toward consolidation seen across the healthcare system.
“This is because hospitals that purchase cardiology practices often pursue a tactic of consolidating previously separate independent groups into one practice – either legally or virtually – for purposes of controlling cardiology market share,” he said in an interview.
But it also suits the younger cardiology workforce. “My experience has been that cardiologists graduating from fellowships increasingly want to subspecialize and are less likely to join smaller practices where they cannot focus on the area of their training. Positions that allow this type of subspecialization can most easily be found in larger practices.” said Mr. Sobal, cochair of the American College of Cardiology Management Publications Committee.
And if professional incentives aren’t enough, there is always money. While the study did not look at physician compensation by practice size, Mr. Sobal suspects physicians in larger practices have higher incomes.
Dr. Figueroa has disclosed no relevant financial relationships. Mr. Sobal is the CEO of a midsized cardiology practice (13 cardiologists).
A version of this article originally appeared on Medscape.com.
U.S. cardiologists are increasingly opting out of solo or small practices, and joining larger practices, according to a new analysis of U.S. data from 2013 and 2017.
In 2013, 34.2% of U.S. cardiologists worked in practices of five or fewer cardiologists. That number dropped to 27% by 2017. On the flip side, the proportion working in practices with 25 cardiologists or more rose from 26% in 2013 to 35.8% in 2017.
“This is a trend we’re seeing across health care – hospitals are merging and they’re acquiring physician practices, primary care doctors are joining larger practices, too – so to some extent it seems that cardiologists are just responding to changes in the market structure where they practice,” said Jose F. Figueroa, MD, MPH, of Harvard T.H. Chan School of Public Health and Brigham & Women’s Hospital, Boston.
Dr. Figueroa and colleagues published their findings as a research brief for the Aug. 4 issue of the Journal of the American College of Cardiology.
The average number of cardiologists in practice together rose from 3.6 in 2013 to 4.3 in 2017. This trend was less obvious in rural areas (2.05 to 2.20) than in urban areas (3.67 to 4.38).
The smallest change was seen in the mid-size practice tier. In 2013, 22.9% of cardiologists worked in a practice that included 11 to 24 cardiologists, and in 2017, the proportion was 23.2%.
To determine practices sizes, Dr. Figueroa and colleagues used publicly available data from 2013 and 2017 from the Centers for Medicare & Medicaid Services’ Physician Compare, a website that helps patients find and compare clinicians and groups enrolled in Medicare.
Market level variables were obtained from the Dartmouth Atlas Project, which uses CMS data to provide information and analysis about national, regional, and local health care markets, as well as hospitals and their affiliated physicians.
Market forces drive practice patterns
The investigators had no direct data from which to ascertain the reasons why cardiologists have tended to move from smaller to larger practices, but they did conduct a multivariable linear regression analysis to better understand possible market-level factors that may be influencing these trends.
What they found was that as hospital market concentration increased, practice sizes also increased. They found no association between any community-level and physician-level factors and changes in practice size.
So, for example, greater growth in the number of cardiologists in practice together was not associated with age or sex.
“It seems that cardiologists are responding to changes in the market structure where they practice, and in particular, to hospital market concentration. This is all in an effort basically to have more market power, which in part means better bargaining power when they’re negotiating with payers,” said Dr. Figueroa.
He also suggested that joining a large practice is almost a necessity these days given the administrative burdens imposed by value-based care initiatives and their attendant quality measure reporting.
“There are stringent requirements for electronic health records and a huge administrative burden related to requirements to ensure compliance and report on quality measures,” said Dr. Figueroa.
“And then there are also all of these new ‘alternative payment’ models to figure out, like accountable care organizations and bundled payments, so you can imagine that if you’re a solo practitioner, it would be really hard to manage all of these details yourself and still ensure you’re taking care of your patient.
“As a cardiologist you need to invest in a bunch of resources, including a workforce to help you manage all the quality measures and keeping track of patients, ensuring they all get their blood pressures checked on time, etc.,” he said.
Anecdotally, Dr. Figueroa suggests it’s also a quality-of-life decision for many cardiologists. “In terms of physician burnout, when you’re a solo practitioner or in a small practice, it’s really hard to go on vacation and find coverage.”
Larry Sobal, MBA, MHA, the CEO of the Heart and Vascular Institute of Wisconsin, agrees that this consolidation is in large part a reflection of the trend toward consolidation seen across the healthcare system.
“This is because hospitals that purchase cardiology practices often pursue a tactic of consolidating previously separate independent groups into one practice – either legally or virtually – for purposes of controlling cardiology market share,” he said in an interview.
But it also suits the younger cardiology workforce. “My experience has been that cardiologists graduating from fellowships increasingly want to subspecialize and are less likely to join smaller practices where they cannot focus on the area of their training. Positions that allow this type of subspecialization can most easily be found in larger practices.” said Mr. Sobal, cochair of the American College of Cardiology Management Publications Committee.
And if professional incentives aren’t enough, there is always money. While the study did not look at physician compensation by practice size, Mr. Sobal suspects physicians in larger practices have higher incomes.
Dr. Figueroa has disclosed no relevant financial relationships. Mr. Sobal is the CEO of a midsized cardiology practice (13 cardiologists).
A version of this article originally appeared on Medscape.com.
U.S. cardiologists are increasingly opting out of solo or small practices, and joining larger practices, according to a new analysis of U.S. data from 2013 and 2017.
In 2013, 34.2% of U.S. cardiologists worked in practices of five or fewer cardiologists. That number dropped to 27% by 2017. On the flip side, the proportion working in practices with 25 cardiologists or more rose from 26% in 2013 to 35.8% in 2017.
“This is a trend we’re seeing across health care – hospitals are merging and they’re acquiring physician practices, primary care doctors are joining larger practices, too – so to some extent it seems that cardiologists are just responding to changes in the market structure where they practice,” said Jose F. Figueroa, MD, MPH, of Harvard T.H. Chan School of Public Health and Brigham & Women’s Hospital, Boston.
Dr. Figueroa and colleagues published their findings as a research brief for the Aug. 4 issue of the Journal of the American College of Cardiology.
The average number of cardiologists in practice together rose from 3.6 in 2013 to 4.3 in 2017. This trend was less obvious in rural areas (2.05 to 2.20) than in urban areas (3.67 to 4.38).
The smallest change was seen in the mid-size practice tier. In 2013, 22.9% of cardiologists worked in a practice that included 11 to 24 cardiologists, and in 2017, the proportion was 23.2%.
To determine practices sizes, Dr. Figueroa and colleagues used publicly available data from 2013 and 2017 from the Centers for Medicare & Medicaid Services’ Physician Compare, a website that helps patients find and compare clinicians and groups enrolled in Medicare.
Market level variables were obtained from the Dartmouth Atlas Project, which uses CMS data to provide information and analysis about national, regional, and local health care markets, as well as hospitals and their affiliated physicians.
Market forces drive practice patterns
The investigators had no direct data from which to ascertain the reasons why cardiologists have tended to move from smaller to larger practices, but they did conduct a multivariable linear regression analysis to better understand possible market-level factors that may be influencing these trends.
What they found was that as hospital market concentration increased, practice sizes also increased. They found no association between any community-level and physician-level factors and changes in practice size.
So, for example, greater growth in the number of cardiologists in practice together was not associated with age or sex.
“It seems that cardiologists are responding to changes in the market structure where they practice, and in particular, to hospital market concentration. This is all in an effort basically to have more market power, which in part means better bargaining power when they’re negotiating with payers,” said Dr. Figueroa.
He also suggested that joining a large practice is almost a necessity these days given the administrative burdens imposed by value-based care initiatives and their attendant quality measure reporting.
“There are stringent requirements for electronic health records and a huge administrative burden related to requirements to ensure compliance and report on quality measures,” said Dr. Figueroa.
“And then there are also all of these new ‘alternative payment’ models to figure out, like accountable care organizations and bundled payments, so you can imagine that if you’re a solo practitioner, it would be really hard to manage all of these details yourself and still ensure you’re taking care of your patient.
“As a cardiologist you need to invest in a bunch of resources, including a workforce to help you manage all the quality measures and keeping track of patients, ensuring they all get their blood pressures checked on time, etc.,” he said.
Anecdotally, Dr. Figueroa suggests it’s also a quality-of-life decision for many cardiologists. “In terms of physician burnout, when you’re a solo practitioner or in a small practice, it’s really hard to go on vacation and find coverage.”
Larry Sobal, MBA, MHA, the CEO of the Heart and Vascular Institute of Wisconsin, agrees that this consolidation is in large part a reflection of the trend toward consolidation seen across the healthcare system.
“This is because hospitals that purchase cardiology practices often pursue a tactic of consolidating previously separate independent groups into one practice – either legally or virtually – for purposes of controlling cardiology market share,” he said in an interview.
But it also suits the younger cardiology workforce. “My experience has been that cardiologists graduating from fellowships increasingly want to subspecialize and are less likely to join smaller practices where they cannot focus on the area of their training. Positions that allow this type of subspecialization can most easily be found in larger practices.” said Mr. Sobal, cochair of the American College of Cardiology Management Publications Committee.
And if professional incentives aren’t enough, there is always money. While the study did not look at physician compensation by practice size, Mr. Sobal suspects physicians in larger practices have higher incomes.
Dr. Figueroa has disclosed no relevant financial relationships. Mr. Sobal is the CEO of a midsized cardiology practice (13 cardiologists).
A version of this article originally appeared on Medscape.com.
UCB’s Commitment to People Living with Epilepsy During COVID-19 Stronger Than Ever
The COVID-19 pandemic has left an indelible mark on the healthcare community, impacting the physical and mental health of healthcare providers, patients, and caregivers alike. For patients managing chronic diseases, their experience with the healthcare system has changed. Whether patients are wary of seeking help because they don’t want to expose themselves to the virus or are uncertain how to engage in telehealth visits with their physician, many patients are struggling with disease management.
Before the pandemic, patients with epilepsy already often experienced physical and psycho-social challenges, which negatively impacted their quality of life.1 For the 65 million people living with epilepsy worldwide,2 failure to effectively manage their condition can have long-lasting and life threatening consequences.1, 3, 4 The pandemic has understandably caused anxiety levels to increase, but for patients with epilepsy, the potentially serious impact of having a seizure, coupled with patients’ existing challenges, can make this time even more stressful.
James Wheless, MD, Professor and Chief of Pediatric Neurology at the University of Tennessee Health Science Center and Director of the Comprehensive Epilepsy Program and Neuroscience Institute at Le Bonheur Children’s Hospital, explained that the importance of caring for the emotional health of epilepsy patients cannot be underestimated. “If patients with epilepsy are stressed or anxious, it can impact their sleep, which can then trigger a seizure. Creating a plan to help manage and treat the stress and anxiety that may be intensified amid the pandemic can assist in potentially lessening the uptick of seizures and emergency department use.”
People living with epilepsy, their caregivers and their families, should have a seizure action plan that includes being able to recognize a seizure or a potential seizure emergency, knowing exactly how to act and, if applicable, when to use a prescribed rescue medication, and when to seek emergency care.5 A healthcare provider can work with patients and caregivers to help create individualized plans that fit their needs, which will help to ease some of the stress and anxiety often experienced by people living with epilepsy.
UCB’s Focus on the Epilepsy Community During COVID-19
The growing impact of the pandemic on emotional health has made strong and consistent support for patients with epilepsy a necessity. UCB is fully committed to helping all of its patient communities, including people living with epilepsy, navigate this uncharted territory and provide the valuable resources patients need, including access to proper care and treatment.
“We are committed to providing solutions for people living with epilepsy, especially during these challenging times,” said Mike Davis, Head of U.S. Neurology at UCB. “UCB takes great pride in our development of both chronic and acute treatment solutions for people living with epilepsy with the goal of helping them achieve better seizure control and hopefully decrease emergency department visits at such a critical time.”
Access to Medication Remains Top Priority
To date, there has been no shortage of any of UCB's epilepsy medicines, and the company continues to monitor its supply chain to mitigate any possible disruption. In fact, by using the SCORE digital system, UCB’s manufacturing and supply operations data management tool, UCB is able to track the actual quantity of medicines available to serve patients and anticipate any potential transportation delays when shipping its medicines. During the pandemic, SCORE has provided accurate and near real-time information so that UCB has visibility into its continuity of supply for patients across the globe.
“For people living with epilepsy who are experiencing seizures or seizure emergencies, we remain committed to helping patients gain access to UCB medicines,” said Mike Davis. “UCB has also enhanced its affordability solutions for our medications during the pandemic to further support people living with epilepsy.”
Patient Support Programs Provide Valuable Information, Inspiration, and Care
Providing patients with ample support and resources takes on an even greater urgency now. UCB has also expanded and extended a number of programs to help the epilepsy community during this unprecedented time. These include:
- Patient Assistance Program (PAP) — UCB has expanded its PAP to help eligible patients who have been impacted by COVID-19 by expediting enrollment to help ensure uninterrupted access to their medicines at no cost. This change will help patients who have previously had difficulty affording UCB medicines due to job loss, job furlough, or loss of insurance coverage.
- ucbCARES® — UCB’s assistance program is ready to help anyone impacted by COVID-19 find answers to their questions and ensure they receive the respect and care they deserve. Contact ucbCARES at +1-844-599-CARE (2273), via email at [email protected] or visit: https://ucb-usa.com/Patients/Patients
- Epilepsy Advocate™ — UCB supports the Epilepsy Advocate program, enabling a community for people living with epilepsy, their family members, and their caregivers, to share inspirational personal success stories and best practices for topics like telemedicine and other helpful epilepsy resources.
UCB’s commitment to patients is stronger than ever. Through its scientific advances, strategic acquisitions, advocacy partnerships, and other patient-focused programs and resources, UCB is harnessing its strengths to deliver on the company’s promise of meeting and exceeding patient needs. To learn more and access UCB resources, please visit: https://ucb-usa.com/Responsibility/coronavirus-updates.
###
- The Epilepsy Foundation of America. Challenges with Epilepsy. Accessed on 2nd July 2020 from https://www.epilepsy.com/learn/challenges-epilepsy
- The Epilepsy Foundation of America . Who gets epilepsy? Accessed on 2nd July 2020 from http://www.epilepsy.com/learn/epilepsy-101/who-gets-epilepsy
- The Epilepsy Foundation of America. Early Death and Epilepsy. Accessed on 9th July 2020 from https://www.epilepsy.com/learn/early-death-and-sudep
- Buck D, et al. Patients' Experiences of Injury as a Result of Epilepsy. Epilepsia. 38(4):439-444, 1997.
- The Epilepsy Foundation of America. Seizure First Aid and Safety. Accessed on 10th July 2020 from https://www.epilepsy.com/learn/seizure-first-aid-and-safety
ucbCARES® is a registered trademark, and Epilepsy Advocate™ is a trademark, of the UCB Group of Companies.
©2020 UCB, Inc., Smyrna, GA 30080. All rights reserved.
US-P-DA-EPI-2000069
The COVID-19 pandemic has left an indelible mark on the healthcare community, impacting the physical and mental health of healthcare providers, patients, and caregivers alike. For patients managing chronic diseases, their experience with the healthcare system has changed. Whether patients are wary of seeking help because they don’t want to expose themselves to the virus or are uncertain how to engage in telehealth visits with their physician, many patients are struggling with disease management.
Before the pandemic, patients with epilepsy already often experienced physical and psycho-social challenges, which negatively impacted their quality of life.1 For the 65 million people living with epilepsy worldwide,2 failure to effectively manage their condition can have long-lasting and life threatening consequences.1, 3, 4 The pandemic has understandably caused anxiety levels to increase, but for patients with epilepsy, the potentially serious impact of having a seizure, coupled with patients’ existing challenges, can make this time even more stressful.
James Wheless, MD, Professor and Chief of Pediatric Neurology at the University of Tennessee Health Science Center and Director of the Comprehensive Epilepsy Program and Neuroscience Institute at Le Bonheur Children’s Hospital, explained that the importance of caring for the emotional health of epilepsy patients cannot be underestimated. “If patients with epilepsy are stressed or anxious, it can impact their sleep, which can then trigger a seizure. Creating a plan to help manage and treat the stress and anxiety that may be intensified amid the pandemic can assist in potentially lessening the uptick of seizures and emergency department use.”
People living with epilepsy, their caregivers and their families, should have a seizure action plan that includes being able to recognize a seizure or a potential seizure emergency, knowing exactly how to act and, if applicable, when to use a prescribed rescue medication, and when to seek emergency care.5 A healthcare provider can work with patients and caregivers to help create individualized plans that fit their needs, which will help to ease some of the stress and anxiety often experienced by people living with epilepsy.
UCB’s Focus on the Epilepsy Community During COVID-19
The growing impact of the pandemic on emotional health has made strong and consistent support for patients with epilepsy a necessity. UCB is fully committed to helping all of its patient communities, including people living with epilepsy, navigate this uncharted territory and provide the valuable resources patients need, including access to proper care and treatment.
“We are committed to providing solutions for people living with epilepsy, especially during these challenging times,” said Mike Davis, Head of U.S. Neurology at UCB. “UCB takes great pride in our development of both chronic and acute treatment solutions for people living with epilepsy with the goal of helping them achieve better seizure control and hopefully decrease emergency department visits at such a critical time.”
Access to Medication Remains Top Priority
To date, there has been no shortage of any of UCB's epilepsy medicines, and the company continues to monitor its supply chain to mitigate any possible disruption. In fact, by using the SCORE digital system, UCB’s manufacturing and supply operations data management tool, UCB is able to track the actual quantity of medicines available to serve patients and anticipate any potential transportation delays when shipping its medicines. During the pandemic, SCORE has provided accurate and near real-time information so that UCB has visibility into its continuity of supply for patients across the globe.
“For people living with epilepsy who are experiencing seizures or seizure emergencies, we remain committed to helping patients gain access to UCB medicines,” said Mike Davis. “UCB has also enhanced its affordability solutions for our medications during the pandemic to further support people living with epilepsy.”
Patient Support Programs Provide Valuable Information, Inspiration, and Care
Providing patients with ample support and resources takes on an even greater urgency now. UCB has also expanded and extended a number of programs to help the epilepsy community during this unprecedented time. These include:
- Patient Assistance Program (PAP) — UCB has expanded its PAP to help eligible patients who have been impacted by COVID-19 by expediting enrollment to help ensure uninterrupted access to their medicines at no cost. This change will help patients who have previously had difficulty affording UCB medicines due to job loss, job furlough, or loss of insurance coverage.
- ucbCARES® — UCB’s assistance program is ready to help anyone impacted by COVID-19 find answers to their questions and ensure they receive the respect and care they deserve. Contact ucbCARES at +1-844-599-CARE (2273), via email at [email protected] or visit: https://ucb-usa.com/Patients/Patients
- Epilepsy Advocate™ — UCB supports the Epilepsy Advocate program, enabling a community for people living with epilepsy, their family members, and their caregivers, to share inspirational personal success stories and best practices for topics like telemedicine and other helpful epilepsy resources.
UCB’s commitment to patients is stronger than ever. Through its scientific advances, strategic acquisitions, advocacy partnerships, and other patient-focused programs and resources, UCB is harnessing its strengths to deliver on the company’s promise of meeting and exceeding patient needs. To learn more and access UCB resources, please visit: https://ucb-usa.com/Responsibility/coronavirus-updates.
###
- The Epilepsy Foundation of America. Challenges with Epilepsy. Accessed on 2nd July 2020 from https://www.epilepsy.com/learn/challenges-epilepsy
- The Epilepsy Foundation of America . Who gets epilepsy? Accessed on 2nd July 2020 from http://www.epilepsy.com/learn/epilepsy-101/who-gets-epilepsy
- The Epilepsy Foundation of America. Early Death and Epilepsy. Accessed on 9th July 2020 from https://www.epilepsy.com/learn/early-death-and-sudep
- Buck D, et al. Patients' Experiences of Injury as a Result of Epilepsy. Epilepsia. 38(4):439-444, 1997.
- The Epilepsy Foundation of America. Seizure First Aid and Safety. Accessed on 10th July 2020 from https://www.epilepsy.com/learn/seizure-first-aid-and-safety
ucbCARES® is a registered trademark, and Epilepsy Advocate™ is a trademark, of the UCB Group of Companies.
©2020 UCB, Inc., Smyrna, GA 30080. All rights reserved.
US-P-DA-EPI-2000069
The COVID-19 pandemic has left an indelible mark on the healthcare community, impacting the physical and mental health of healthcare providers, patients, and caregivers alike. For patients managing chronic diseases, their experience with the healthcare system has changed. Whether patients are wary of seeking help because they don’t want to expose themselves to the virus or are uncertain how to engage in telehealth visits with their physician, many patients are struggling with disease management.
Before the pandemic, patients with epilepsy already often experienced physical and psycho-social challenges, which negatively impacted their quality of life.1 For the 65 million people living with epilepsy worldwide,2 failure to effectively manage their condition can have long-lasting and life threatening consequences.1, 3, 4 The pandemic has understandably caused anxiety levels to increase, but for patients with epilepsy, the potentially serious impact of having a seizure, coupled with patients’ existing challenges, can make this time even more stressful.
James Wheless, MD, Professor and Chief of Pediatric Neurology at the University of Tennessee Health Science Center and Director of the Comprehensive Epilepsy Program and Neuroscience Institute at Le Bonheur Children’s Hospital, explained that the importance of caring for the emotional health of epilepsy patients cannot be underestimated. “If patients with epilepsy are stressed or anxious, it can impact their sleep, which can then trigger a seizure. Creating a plan to help manage and treat the stress and anxiety that may be intensified amid the pandemic can assist in potentially lessening the uptick of seizures and emergency department use.”
People living with epilepsy, their caregivers and their families, should have a seizure action plan that includes being able to recognize a seizure or a potential seizure emergency, knowing exactly how to act and, if applicable, when to use a prescribed rescue medication, and when to seek emergency care.5 A healthcare provider can work with patients and caregivers to help create individualized plans that fit their needs, which will help to ease some of the stress and anxiety often experienced by people living with epilepsy.
UCB’s Focus on the Epilepsy Community During COVID-19
The growing impact of the pandemic on emotional health has made strong and consistent support for patients with epilepsy a necessity. UCB is fully committed to helping all of its patient communities, including people living with epilepsy, navigate this uncharted territory and provide the valuable resources patients need, including access to proper care and treatment.
“We are committed to providing solutions for people living with epilepsy, especially during these challenging times,” said Mike Davis, Head of U.S. Neurology at UCB. “UCB takes great pride in our development of both chronic and acute treatment solutions for people living with epilepsy with the goal of helping them achieve better seizure control and hopefully decrease emergency department visits at such a critical time.”
Access to Medication Remains Top Priority
To date, there has been no shortage of any of UCB's epilepsy medicines, and the company continues to monitor its supply chain to mitigate any possible disruption. In fact, by using the SCORE digital system, UCB’s manufacturing and supply operations data management tool, UCB is able to track the actual quantity of medicines available to serve patients and anticipate any potential transportation delays when shipping its medicines. During the pandemic, SCORE has provided accurate and near real-time information so that UCB has visibility into its continuity of supply for patients across the globe.
“For people living with epilepsy who are experiencing seizures or seizure emergencies, we remain committed to helping patients gain access to UCB medicines,” said Mike Davis. “UCB has also enhanced its affordability solutions for our medications during the pandemic to further support people living with epilepsy.”
Patient Support Programs Provide Valuable Information, Inspiration, and Care
Providing patients with ample support and resources takes on an even greater urgency now. UCB has also expanded and extended a number of programs to help the epilepsy community during this unprecedented time. These include:
- Patient Assistance Program (PAP) — UCB has expanded its PAP to help eligible patients who have been impacted by COVID-19 by expediting enrollment to help ensure uninterrupted access to their medicines at no cost. This change will help patients who have previously had difficulty affording UCB medicines due to job loss, job furlough, or loss of insurance coverage.
- ucbCARES® — UCB’s assistance program is ready to help anyone impacted by COVID-19 find answers to their questions and ensure they receive the respect and care they deserve. Contact ucbCARES at +1-844-599-CARE (2273), via email at [email protected] or visit: https://ucb-usa.com/Patients/Patients
- Epilepsy Advocate™ — UCB supports the Epilepsy Advocate program, enabling a community for people living with epilepsy, their family members, and their caregivers, to share inspirational personal success stories and best practices for topics like telemedicine and other helpful epilepsy resources.
UCB’s commitment to patients is stronger than ever. Through its scientific advances, strategic acquisitions, advocacy partnerships, and other patient-focused programs and resources, UCB is harnessing its strengths to deliver on the company’s promise of meeting and exceeding patient needs. To learn more and access UCB resources, please visit: https://ucb-usa.com/Responsibility/coronavirus-updates.
###
- The Epilepsy Foundation of America. Challenges with Epilepsy. Accessed on 2nd July 2020 from https://www.epilepsy.com/learn/challenges-epilepsy
- The Epilepsy Foundation of America . Who gets epilepsy? Accessed on 2nd July 2020 from http://www.epilepsy.com/learn/epilepsy-101/who-gets-epilepsy
- The Epilepsy Foundation of America. Early Death and Epilepsy. Accessed on 9th July 2020 from https://www.epilepsy.com/learn/early-death-and-sudep
- Buck D, et al. Patients' Experiences of Injury as a Result of Epilepsy. Epilepsia. 38(4):439-444, 1997.
- The Epilepsy Foundation of America. Seizure First Aid and Safety. Accessed on 10th July 2020 from https://www.epilepsy.com/learn/seizure-first-aid-and-safety
ucbCARES® is a registered trademark, and Epilepsy Advocate™ is a trademark, of the UCB Group of Companies.
©2020 UCB, Inc., Smyrna, GA 30080. All rights reserved.
US-P-DA-EPI-2000069
Flu and pneumonia vaccination tied to lower dementia risk
In a cohort study of more than 9,000 older adults, receiving a single influenza vaccination was associated with a 17% lower prevalence of Alzheimer’s disease compared with not receiving the vaccine. In addition, for those who were vaccinated more than once over the years, there was an additional 13% reduction in Alzheimer’s disease incidence.
In another study, which included more than 5,000 older participants, being vaccinated against pneumonia between the ages of 65 and 75 reduced the risk of developing Alzheimer’s disease by 30%.
The subject of vaccines “is obviously very topical with the COVID-19 pandemic,” said Rebecca M. Edelmayer, PhD, director of scientific engagement for the Alzheimer’s Association. “While these are very preliminary data, these studies do suggest that with vaccination against both respiratory illnesses, there is the potential to lower risk for developing cognitive decline and dementia,” said Dr. Edelmayer, who was not involved in the research.
The findings of both studies were presented at the virtual annual meeting of the Alzheimer’s Association International Conference.
Lower Alzheimer’s disease prevalence
The influenza vaccine study was presented by Albert Amran, a fourth-year medical student at McGovern Medical School at the University of Texas Health Science Center at Houston. The researchers used electronic health record data to create a propensity-matched cohort of 9,066 vaccinated and unvaccinated adults ages 60 and older.
Influenza vaccination, increased frequency of administration, and younger age at time of vaccination were all associated with reduced incidence of Alzheimer’s disease, Mr. Amran reported.
Being vaccinated for influenza was significantly linked to a lower prevalence of Alzheimer’s disease (odds ratio [OR], 0.83; P < .0001) in comparison with not being vaccinated. Receiving more than one vaccination over the years was associated with an additional reduction in AD incidence (OR, 0.87; P = .0342). The protection appeared to be strongest for those who received their first vaccination at a younger age, for example, at age 60 versus 70.
Mr. Amran and research colleagues have two theories as to why influenza vaccination may protect the brain.
One is that vaccination may aid the immune system as people age. “As people get older, their immune systems become less able to control infection. We’ve seen this with the ongoing pandemic, with older people at much higher risk for dying. Giving people the vaccine once a year may help keep the immune system in shape,” Mr. Amran said.
Another theory is that the prevention of influenza itself may be relevant. “Flu infections can be extremely deadly in older patients. Maybe the results of our study will give another reason for people to get vaccinated,” Mr. Amran said.
Pneumonia vaccine
The other study was presented by Svetlana Ukraintseva, PhD, of Duke University, Durham, N.C.
Dr. Ukraintseva and colleagues investigated associations between pneumococcal vaccine, with and without an accompanying influenza vaccine, and the risk for Alzheimer’s disease among 5,146 participants in the Cardiovascular Health Study. Covariates included sex, race, birth cohort, education, smoking, and a known genetic risk factor for Alzheimer’s disease: the rs2075650 G allele in the TOMM40 gene.
In a logistic model with all covariates, vaccination against pneumonia between ages 65 and 75 was significantly associated with reduced risk of developing AD (OR, 0.70; P < .04). The largest reduction in Alzheimer’s disease risk (OR, 0.62; P < .04) was among those vaccinated against pneumonia who were noncarriers of the rs2075650 G allele.
Total number of vaccinations against pneumonia and influenza between ages 65 and 75 was also associated with a lower risk for Alzheimer’s disease (OR, 0.88; P < .01). However, the effect was not evident for the influenza vaccination alone.
“The fact that very different pathogens – viral, bacterial, fungal – have been linked to Alzheimer’s disease indicates a possibility that compromised host immunity may play a role in Alzheimer’s disease through increasing overall brain’s vulnerability to various microbes,” said Dr. Ukraintseva.
The current findings support further investigation of pneumococcal vaccine as a “reasonable candidate for repurposing in personalized AD prevention,” she noted. “These results also support the important role of boosting overall immune robustness/resilience in preventing Alzheimer’s disease,” Dr. Ukraintseva added.
Her group is currently working on confirming the findings in another population.
Brain protective?
“Neither study can prove that the benefit is directly related to the vaccine itself, but what they can indicate is that potentially, vaccines are a way to protect your health and brain,” Dr. Edelmayer said.
In a statement, Maria Carrillo, PhD, chief science officer for the Alzheimer’s Association, noted that more research is needed.
The new data call “for further studies in large, diverse clinical trials to inform whether vaccinations as a public health strategy decrease our risk for developing dementia as we age,” Dr. Carillo said.
Funding for the influenza vaccine study was provided by the Christopher Sarofim Family Professorship in Biomedical Informatics and Bioengineering, a UT STARs Award, the Cancer Prevention and Research Institute of Texas, and the National Institutes of Health. Funding for the pneumonia study was provided by the National Institute on Aging. Dr. Amran, Dr. Ukraintseva, Dr. Edelmayer, and Dr. Carrillo have reported no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
In a cohort study of more than 9,000 older adults, receiving a single influenza vaccination was associated with a 17% lower prevalence of Alzheimer’s disease compared with not receiving the vaccine. In addition, for those who were vaccinated more than once over the years, there was an additional 13% reduction in Alzheimer’s disease incidence.
In another study, which included more than 5,000 older participants, being vaccinated against pneumonia between the ages of 65 and 75 reduced the risk of developing Alzheimer’s disease by 30%.
The subject of vaccines “is obviously very topical with the COVID-19 pandemic,” said Rebecca M. Edelmayer, PhD, director of scientific engagement for the Alzheimer’s Association. “While these are very preliminary data, these studies do suggest that with vaccination against both respiratory illnesses, there is the potential to lower risk for developing cognitive decline and dementia,” said Dr. Edelmayer, who was not involved in the research.
The findings of both studies were presented at the virtual annual meeting of the Alzheimer’s Association International Conference.
Lower Alzheimer’s disease prevalence
The influenza vaccine study was presented by Albert Amran, a fourth-year medical student at McGovern Medical School at the University of Texas Health Science Center at Houston. The researchers used electronic health record data to create a propensity-matched cohort of 9,066 vaccinated and unvaccinated adults ages 60 and older.
Influenza vaccination, increased frequency of administration, and younger age at time of vaccination were all associated with reduced incidence of Alzheimer’s disease, Mr. Amran reported.
Being vaccinated for influenza was significantly linked to a lower prevalence of Alzheimer’s disease (odds ratio [OR], 0.83; P < .0001) in comparison with not being vaccinated. Receiving more than one vaccination over the years was associated with an additional reduction in AD incidence (OR, 0.87; P = .0342). The protection appeared to be strongest for those who received their first vaccination at a younger age, for example, at age 60 versus 70.
Mr. Amran and research colleagues have two theories as to why influenza vaccination may protect the brain.
One is that vaccination may aid the immune system as people age. “As people get older, their immune systems become less able to control infection. We’ve seen this with the ongoing pandemic, with older people at much higher risk for dying. Giving people the vaccine once a year may help keep the immune system in shape,” Mr. Amran said.
Another theory is that the prevention of influenza itself may be relevant. “Flu infections can be extremely deadly in older patients. Maybe the results of our study will give another reason for people to get vaccinated,” Mr. Amran said.
Pneumonia vaccine
The other study was presented by Svetlana Ukraintseva, PhD, of Duke University, Durham, N.C.
Dr. Ukraintseva and colleagues investigated associations between pneumococcal vaccine, with and without an accompanying influenza vaccine, and the risk for Alzheimer’s disease among 5,146 participants in the Cardiovascular Health Study. Covariates included sex, race, birth cohort, education, smoking, and a known genetic risk factor for Alzheimer’s disease: the rs2075650 G allele in the TOMM40 gene.
In a logistic model with all covariates, vaccination against pneumonia between ages 65 and 75 was significantly associated with reduced risk of developing AD (OR, 0.70; P < .04). The largest reduction in Alzheimer’s disease risk (OR, 0.62; P < .04) was among those vaccinated against pneumonia who were noncarriers of the rs2075650 G allele.
Total number of vaccinations against pneumonia and influenza between ages 65 and 75 was also associated with a lower risk for Alzheimer’s disease (OR, 0.88; P < .01). However, the effect was not evident for the influenza vaccination alone.
“The fact that very different pathogens – viral, bacterial, fungal – have been linked to Alzheimer’s disease indicates a possibility that compromised host immunity may play a role in Alzheimer’s disease through increasing overall brain’s vulnerability to various microbes,” said Dr. Ukraintseva.
The current findings support further investigation of pneumococcal vaccine as a “reasonable candidate for repurposing in personalized AD prevention,” she noted. “These results also support the important role of boosting overall immune robustness/resilience in preventing Alzheimer’s disease,” Dr. Ukraintseva added.
Her group is currently working on confirming the findings in another population.
Brain protective?
“Neither study can prove that the benefit is directly related to the vaccine itself, but what they can indicate is that potentially, vaccines are a way to protect your health and brain,” Dr. Edelmayer said.
In a statement, Maria Carrillo, PhD, chief science officer for the Alzheimer’s Association, noted that more research is needed.
The new data call “for further studies in large, diverse clinical trials to inform whether vaccinations as a public health strategy decrease our risk for developing dementia as we age,” Dr. Carillo said.
Funding for the influenza vaccine study was provided by the Christopher Sarofim Family Professorship in Biomedical Informatics and Bioengineering, a UT STARs Award, the Cancer Prevention and Research Institute of Texas, and the National Institutes of Health. Funding for the pneumonia study was provided by the National Institute on Aging. Dr. Amran, Dr. Ukraintseva, Dr. Edelmayer, and Dr. Carrillo have reported no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
In a cohort study of more than 9,000 older adults, receiving a single influenza vaccination was associated with a 17% lower prevalence of Alzheimer’s disease compared with not receiving the vaccine. In addition, for those who were vaccinated more than once over the years, there was an additional 13% reduction in Alzheimer’s disease incidence.
In another study, which included more than 5,000 older participants, being vaccinated against pneumonia between the ages of 65 and 75 reduced the risk of developing Alzheimer’s disease by 30%.
The subject of vaccines “is obviously very topical with the COVID-19 pandemic,” said Rebecca M. Edelmayer, PhD, director of scientific engagement for the Alzheimer’s Association. “While these are very preliminary data, these studies do suggest that with vaccination against both respiratory illnesses, there is the potential to lower risk for developing cognitive decline and dementia,” said Dr. Edelmayer, who was not involved in the research.
The findings of both studies were presented at the virtual annual meeting of the Alzheimer’s Association International Conference.
Lower Alzheimer’s disease prevalence
The influenza vaccine study was presented by Albert Amran, a fourth-year medical student at McGovern Medical School at the University of Texas Health Science Center at Houston. The researchers used electronic health record data to create a propensity-matched cohort of 9,066 vaccinated and unvaccinated adults ages 60 and older.
Influenza vaccination, increased frequency of administration, and younger age at time of vaccination were all associated with reduced incidence of Alzheimer’s disease, Mr. Amran reported.
Being vaccinated for influenza was significantly linked to a lower prevalence of Alzheimer’s disease (odds ratio [OR], 0.83; P < .0001) in comparison with not being vaccinated. Receiving more than one vaccination over the years was associated with an additional reduction in AD incidence (OR, 0.87; P = .0342). The protection appeared to be strongest for those who received their first vaccination at a younger age, for example, at age 60 versus 70.
Mr. Amran and research colleagues have two theories as to why influenza vaccination may protect the brain.
One is that vaccination may aid the immune system as people age. “As people get older, their immune systems become less able to control infection. We’ve seen this with the ongoing pandemic, with older people at much higher risk for dying. Giving people the vaccine once a year may help keep the immune system in shape,” Mr. Amran said.
Another theory is that the prevention of influenza itself may be relevant. “Flu infections can be extremely deadly in older patients. Maybe the results of our study will give another reason for people to get vaccinated,” Mr. Amran said.
Pneumonia vaccine
The other study was presented by Svetlana Ukraintseva, PhD, of Duke University, Durham, N.C.
Dr. Ukraintseva and colleagues investigated associations between pneumococcal vaccine, with and without an accompanying influenza vaccine, and the risk for Alzheimer’s disease among 5,146 participants in the Cardiovascular Health Study. Covariates included sex, race, birth cohort, education, smoking, and a known genetic risk factor for Alzheimer’s disease: the rs2075650 G allele in the TOMM40 gene.
In a logistic model with all covariates, vaccination against pneumonia between ages 65 and 75 was significantly associated with reduced risk of developing AD (OR, 0.70; P < .04). The largest reduction in Alzheimer’s disease risk (OR, 0.62; P < .04) was among those vaccinated against pneumonia who were noncarriers of the rs2075650 G allele.
Total number of vaccinations against pneumonia and influenza between ages 65 and 75 was also associated with a lower risk for Alzheimer’s disease (OR, 0.88; P < .01). However, the effect was not evident for the influenza vaccination alone.
“The fact that very different pathogens – viral, bacterial, fungal – have been linked to Alzheimer’s disease indicates a possibility that compromised host immunity may play a role in Alzheimer’s disease through increasing overall brain’s vulnerability to various microbes,” said Dr. Ukraintseva.
The current findings support further investigation of pneumococcal vaccine as a “reasonable candidate for repurposing in personalized AD prevention,” she noted. “These results also support the important role of boosting overall immune robustness/resilience in preventing Alzheimer’s disease,” Dr. Ukraintseva added.
Her group is currently working on confirming the findings in another population.
Brain protective?
“Neither study can prove that the benefit is directly related to the vaccine itself, but what they can indicate is that potentially, vaccines are a way to protect your health and brain,” Dr. Edelmayer said.
In a statement, Maria Carrillo, PhD, chief science officer for the Alzheimer’s Association, noted that more research is needed.
The new data call “for further studies in large, diverse clinical trials to inform whether vaccinations as a public health strategy decrease our risk for developing dementia as we age,” Dr. Carillo said.
Funding for the influenza vaccine study was provided by the Christopher Sarofim Family Professorship in Biomedical Informatics and Bioengineering, a UT STARs Award, the Cancer Prevention and Research Institute of Texas, and the National Institutes of Health. Funding for the pneumonia study was provided by the National Institute on Aging. Dr. Amran, Dr. Ukraintseva, Dr. Edelmayer, and Dr. Carrillo have reported no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
FROM AAIC 2020
Hematologic manifestations of COVID-19
While SARS-CoV-2 causes frequent and potentially severe pulmonary disease, extrapulmonary manifestations may be a prominent part of the clinical spectrum, according to a review published in Nature Medicine.
In this comprehensive literature review, Aakriti Gupta, MD, of New York-Presbyterian/Columbia University Irving Medical Center and colleagues detailed the epidemiologic and clinical multisystem effects of COVID-19. The authors explained what is known and/or suspected about the pathophysiology of those effects and outlined the resultant management considerations.
Key mechanisms for multiorgan injury include direct viral toxicity, endothelial cell damage with inflammatory mediation of thrombosis, aberrant immune response, and dysregulation of the renin-angiotensin-aldosterone system.
The relative importance of each pathway in the clinical presentation of COVID-19 and the mechanism for extrapulmonary spread of SARS-CoV-2 infection are imperfectly understood, Dr. Gupta and colleagues noted.
As for the hematologic effects of COVID-19, patients may present with several laboratory abnormalities, but the most clinically relevant complications are thromboembolic.
COVID-19-associated coagulopathy
Dr. Gupta and colleagues noted that COVID-19–associated coagulopathy (CAC) is accompanied by elevated levels of D-dimer and fibrinogen, with minor abnormalities in prothrombin time, activated partial thromboplastin time, and platelet counts in the initial stage of infection.
Elevated D-dimer levels have been reported in up to 46% of hospitalized patients, and a longitudinal increase while hospitalized is associated with higher mortality.
In initial reports from China and the Netherlands, thrombotic complications were seen in up to 30% of COVID-19 patients in ICUs. Thromboembolic events have been reported in 17%-22% of critically ill COVID-19 patients in studies from Italy and France.
Globally, in severely affected COVID-19 patients, there have been reports of thromboses in intravenous catheters and extracorporeal circuits as well as arterial vascular occlusive events, including myocardial infarction, acute limb ischemia, and stroke.
There have been multiple small studies in which critically ill COVID-19 patients were routinely screened for thrombotic disease. In these studies, rates of thrombotic complications ranged from 69% to 85%, despite thromboprophylaxis. Variability in prophylactic and screening protocols explain discrepancies in event rates.
Pathophysiology
The abnormally high blood levels of D-dimer and fibrinogen during the early stages of SARS-CoV-2 infection are reflective of excessive inflammation rather than overt disseminated intravascular coagulation (DIC), which may develop in later stages of illness, according to Dr. Gupta and colleagues. The authors theorized that uninhibited inflammation, along with hypoxia and direct viral-mediated cellular injury, contribute to thrombotic complications in COVID-19 patients.
“The increased expression of ACE2 in endothelial cells after infection with SARS-CoV-2 may perpetuate a vicious cycle of endothelialitis that promotes thromboinflammation,” the authors wrote. “Collectively, hemostatic and inflammatory changes, which reflect endothelial damage and activation as well as critical illness, constitute a prothrombotic milieu.”
The authors noted that small autopsy series have shown high rates of microvascular and macrovascular thromboses, particularly in the pulmonary circulation, in COVID-19 patients.
Management considerations
Dr. Gupta and colleagues referenced interim guidelines from the International Society of Thrombosis and Haemostasis that recommend serial complete blood counts, with white blood cell differential and assessment of D-dimer, prothrombin time, and fibrinogen for hospitalized patients with COVID-19. The authors also cited guidelines published in the Journal of the American College of Cardiology that recommend routine risk assessment for venous thromboembolism in all hospitalized patients with COVID-19 and the consideration of standard-dose pharmaco-prophylaxis in patients who lack absolute contraindications.
Empiric use of higher-than-routine prophylactic-dose or therapeutic-dose anticoagulation in ICU patients in the absence of proven thromboses has been implemented in some institutions, Dr. Gupta and colleagues noted. Parenteral anticoagulants (such as low-molecular-weight or unfractionated heparin) are preferred to oral anticoagulants because of short half-life, available reversal agents, and the potential for drug interactions between oral agents and antiviral and/or antibacterial treatment, according to the authors.
They wrote that randomized clinical trials “will be crucial to establishing effective and safe strategies” for anticoagulation in COVID-19 patients. To this point, few randomized trials have been published to guide management of COVID-19–associated extrapulmonary manifestations, including CAC.
Research priorities
A more complete understanding of the organ-specific pathophysiology of this multisystem disease is vital, according to Dr. Gupta and colleagues.
“Regional, national, and international collaborations of clinicians and scientists focused on high-quality, transparent, ethical, and evidence-based research practices would help propel the global community toward achieving success against this pandemic,” the authors wrote.
They noted that common definitions and data standards for research are key for cross-institutional and international collaborations.
Initial attention to high-quality prospective scientific documentation standards would have been valuable and will be required for dedicated trials to address the multisystem effects of COVID-19.
Community of learners
As much as at any prior time in their careers, during the COVID-19 pandemic, health care providers have been enveloped in a community of learners – a group of people who share values and beliefs and who actively engage in learning from one another.
Through a patchwork of sources – news media, social media, traditional medical journals, general and COVID-focused meetings, and, most importantly, patients – we have been living in a learning-centered environment. Academicians, clinicians, practicing physicians, researchers, patients, family members, and caregivers have been actively and intentionally building a knowledge base together.
Through their published review, Dr. Gupta and colleagues have contributed meaningfully to the understanding our learning community has of the various extrapulmonary manifestations of COVID-19. The authors have provided a nice template for further research and clinical advances.
Dr. Gupta and colleagues disclosed financial relationships with a range of pharmaceutical companies and other organizations.
Dr. Lyss was a community-based medical oncologist and clinical researcher for more than 35 years before his recent retirement. His clinical and research interests were focused on breast and lung cancers as well as expanding clinical trial access to medically underserved populations. He is based in St. Louis. He has no conflicts of interest.
Source: Gupta A et al. Nat Med. 2020 Jul;26(7):1017-32.
While SARS-CoV-2 causes frequent and potentially severe pulmonary disease, extrapulmonary manifestations may be a prominent part of the clinical spectrum, according to a review published in Nature Medicine.
In this comprehensive literature review, Aakriti Gupta, MD, of New York-Presbyterian/Columbia University Irving Medical Center and colleagues detailed the epidemiologic and clinical multisystem effects of COVID-19. The authors explained what is known and/or suspected about the pathophysiology of those effects and outlined the resultant management considerations.
Key mechanisms for multiorgan injury include direct viral toxicity, endothelial cell damage with inflammatory mediation of thrombosis, aberrant immune response, and dysregulation of the renin-angiotensin-aldosterone system.
The relative importance of each pathway in the clinical presentation of COVID-19 and the mechanism for extrapulmonary spread of SARS-CoV-2 infection are imperfectly understood, Dr. Gupta and colleagues noted.
As for the hematologic effects of COVID-19, patients may present with several laboratory abnormalities, but the most clinically relevant complications are thromboembolic.
COVID-19-associated coagulopathy
Dr. Gupta and colleagues noted that COVID-19–associated coagulopathy (CAC) is accompanied by elevated levels of D-dimer and fibrinogen, with minor abnormalities in prothrombin time, activated partial thromboplastin time, and platelet counts in the initial stage of infection.
Elevated D-dimer levels have been reported in up to 46% of hospitalized patients, and a longitudinal increase while hospitalized is associated with higher mortality.
In initial reports from China and the Netherlands, thrombotic complications were seen in up to 30% of COVID-19 patients in ICUs. Thromboembolic events have been reported in 17%-22% of critically ill COVID-19 patients in studies from Italy and France.
Globally, in severely affected COVID-19 patients, there have been reports of thromboses in intravenous catheters and extracorporeal circuits as well as arterial vascular occlusive events, including myocardial infarction, acute limb ischemia, and stroke.
There have been multiple small studies in which critically ill COVID-19 patients were routinely screened for thrombotic disease. In these studies, rates of thrombotic complications ranged from 69% to 85%, despite thromboprophylaxis. Variability in prophylactic and screening protocols explain discrepancies in event rates.
Pathophysiology
The abnormally high blood levels of D-dimer and fibrinogen during the early stages of SARS-CoV-2 infection are reflective of excessive inflammation rather than overt disseminated intravascular coagulation (DIC), which may develop in later stages of illness, according to Dr. Gupta and colleagues. The authors theorized that uninhibited inflammation, along with hypoxia and direct viral-mediated cellular injury, contribute to thrombotic complications in COVID-19 patients.
“The increased expression of ACE2 in endothelial cells after infection with SARS-CoV-2 may perpetuate a vicious cycle of endothelialitis that promotes thromboinflammation,” the authors wrote. “Collectively, hemostatic and inflammatory changes, which reflect endothelial damage and activation as well as critical illness, constitute a prothrombotic milieu.”
The authors noted that small autopsy series have shown high rates of microvascular and macrovascular thromboses, particularly in the pulmonary circulation, in COVID-19 patients.
Management considerations
Dr. Gupta and colleagues referenced interim guidelines from the International Society of Thrombosis and Haemostasis that recommend serial complete blood counts, with white blood cell differential and assessment of D-dimer, prothrombin time, and fibrinogen for hospitalized patients with COVID-19. The authors also cited guidelines published in the Journal of the American College of Cardiology that recommend routine risk assessment for venous thromboembolism in all hospitalized patients with COVID-19 and the consideration of standard-dose pharmaco-prophylaxis in patients who lack absolute contraindications.
Empiric use of higher-than-routine prophylactic-dose or therapeutic-dose anticoagulation in ICU patients in the absence of proven thromboses has been implemented in some institutions, Dr. Gupta and colleagues noted. Parenteral anticoagulants (such as low-molecular-weight or unfractionated heparin) are preferred to oral anticoagulants because of short half-life, available reversal agents, and the potential for drug interactions between oral agents and antiviral and/or antibacterial treatment, according to the authors.
They wrote that randomized clinical trials “will be crucial to establishing effective and safe strategies” for anticoagulation in COVID-19 patients. To this point, few randomized trials have been published to guide management of COVID-19–associated extrapulmonary manifestations, including CAC.
Research priorities
A more complete understanding of the organ-specific pathophysiology of this multisystem disease is vital, according to Dr. Gupta and colleagues.
“Regional, national, and international collaborations of clinicians and scientists focused on high-quality, transparent, ethical, and evidence-based research practices would help propel the global community toward achieving success against this pandemic,” the authors wrote.
They noted that common definitions and data standards for research are key for cross-institutional and international collaborations.
Initial attention to high-quality prospective scientific documentation standards would have been valuable and will be required for dedicated trials to address the multisystem effects of COVID-19.
Community of learners
As much as at any prior time in their careers, during the COVID-19 pandemic, health care providers have been enveloped in a community of learners – a group of people who share values and beliefs and who actively engage in learning from one another.
Through a patchwork of sources – news media, social media, traditional medical journals, general and COVID-focused meetings, and, most importantly, patients – we have been living in a learning-centered environment. Academicians, clinicians, practicing physicians, researchers, patients, family members, and caregivers have been actively and intentionally building a knowledge base together.
Through their published review, Dr. Gupta and colleagues have contributed meaningfully to the understanding our learning community has of the various extrapulmonary manifestations of COVID-19. The authors have provided a nice template for further research and clinical advances.
Dr. Gupta and colleagues disclosed financial relationships with a range of pharmaceutical companies and other organizations.
Dr. Lyss was a community-based medical oncologist and clinical researcher for more than 35 years before his recent retirement. His clinical and research interests were focused on breast and lung cancers as well as expanding clinical trial access to medically underserved populations. He is based in St. Louis. He has no conflicts of interest.
Source: Gupta A et al. Nat Med. 2020 Jul;26(7):1017-32.
While SARS-CoV-2 causes frequent and potentially severe pulmonary disease, extrapulmonary manifestations may be a prominent part of the clinical spectrum, according to a review published in Nature Medicine.
In this comprehensive literature review, Aakriti Gupta, MD, of New York-Presbyterian/Columbia University Irving Medical Center and colleagues detailed the epidemiologic and clinical multisystem effects of COVID-19. The authors explained what is known and/or suspected about the pathophysiology of those effects and outlined the resultant management considerations.
Key mechanisms for multiorgan injury include direct viral toxicity, endothelial cell damage with inflammatory mediation of thrombosis, aberrant immune response, and dysregulation of the renin-angiotensin-aldosterone system.
The relative importance of each pathway in the clinical presentation of COVID-19 and the mechanism for extrapulmonary spread of SARS-CoV-2 infection are imperfectly understood, Dr. Gupta and colleagues noted.
As for the hematologic effects of COVID-19, patients may present with several laboratory abnormalities, but the most clinically relevant complications are thromboembolic.
COVID-19-associated coagulopathy
Dr. Gupta and colleagues noted that COVID-19–associated coagulopathy (CAC) is accompanied by elevated levels of D-dimer and fibrinogen, with minor abnormalities in prothrombin time, activated partial thromboplastin time, and platelet counts in the initial stage of infection.
Elevated D-dimer levels have been reported in up to 46% of hospitalized patients, and a longitudinal increase while hospitalized is associated with higher mortality.
In initial reports from China and the Netherlands, thrombotic complications were seen in up to 30% of COVID-19 patients in ICUs. Thromboembolic events have been reported in 17%-22% of critically ill COVID-19 patients in studies from Italy and France.
Globally, in severely affected COVID-19 patients, there have been reports of thromboses in intravenous catheters and extracorporeal circuits as well as arterial vascular occlusive events, including myocardial infarction, acute limb ischemia, and stroke.
There have been multiple small studies in which critically ill COVID-19 patients were routinely screened for thrombotic disease. In these studies, rates of thrombotic complications ranged from 69% to 85%, despite thromboprophylaxis. Variability in prophylactic and screening protocols explain discrepancies in event rates.
Pathophysiology
The abnormally high blood levels of D-dimer and fibrinogen during the early stages of SARS-CoV-2 infection are reflective of excessive inflammation rather than overt disseminated intravascular coagulation (DIC), which may develop in later stages of illness, according to Dr. Gupta and colleagues. The authors theorized that uninhibited inflammation, along with hypoxia and direct viral-mediated cellular injury, contribute to thrombotic complications in COVID-19 patients.
“The increased expression of ACE2 in endothelial cells after infection with SARS-CoV-2 may perpetuate a vicious cycle of endothelialitis that promotes thromboinflammation,” the authors wrote. “Collectively, hemostatic and inflammatory changes, which reflect endothelial damage and activation as well as critical illness, constitute a prothrombotic milieu.”
The authors noted that small autopsy series have shown high rates of microvascular and macrovascular thromboses, particularly in the pulmonary circulation, in COVID-19 patients.
Management considerations
Dr. Gupta and colleagues referenced interim guidelines from the International Society of Thrombosis and Haemostasis that recommend serial complete blood counts, with white blood cell differential and assessment of D-dimer, prothrombin time, and fibrinogen for hospitalized patients with COVID-19. The authors also cited guidelines published in the Journal of the American College of Cardiology that recommend routine risk assessment for venous thromboembolism in all hospitalized patients with COVID-19 and the consideration of standard-dose pharmaco-prophylaxis in patients who lack absolute contraindications.
Empiric use of higher-than-routine prophylactic-dose or therapeutic-dose anticoagulation in ICU patients in the absence of proven thromboses has been implemented in some institutions, Dr. Gupta and colleagues noted. Parenteral anticoagulants (such as low-molecular-weight or unfractionated heparin) are preferred to oral anticoagulants because of short half-life, available reversal agents, and the potential for drug interactions between oral agents and antiviral and/or antibacterial treatment, according to the authors.
They wrote that randomized clinical trials “will be crucial to establishing effective and safe strategies” for anticoagulation in COVID-19 patients. To this point, few randomized trials have been published to guide management of COVID-19–associated extrapulmonary manifestations, including CAC.
Research priorities
A more complete understanding of the organ-specific pathophysiology of this multisystem disease is vital, according to Dr. Gupta and colleagues.
“Regional, national, and international collaborations of clinicians and scientists focused on high-quality, transparent, ethical, and evidence-based research practices would help propel the global community toward achieving success against this pandemic,” the authors wrote.
They noted that common definitions and data standards for research are key for cross-institutional and international collaborations.
Initial attention to high-quality prospective scientific documentation standards would have been valuable and will be required for dedicated trials to address the multisystem effects of COVID-19.
Community of learners
As much as at any prior time in their careers, during the COVID-19 pandemic, health care providers have been enveloped in a community of learners – a group of people who share values and beliefs and who actively engage in learning from one another.
Through a patchwork of sources – news media, social media, traditional medical journals, general and COVID-focused meetings, and, most importantly, patients – we have been living in a learning-centered environment. Academicians, clinicians, practicing physicians, researchers, patients, family members, and caregivers have been actively and intentionally building a knowledge base together.
Through their published review, Dr. Gupta and colleagues have contributed meaningfully to the understanding our learning community has of the various extrapulmonary manifestations of COVID-19. The authors have provided a nice template for further research and clinical advances.
Dr. Gupta and colleagues disclosed financial relationships with a range of pharmaceutical companies and other organizations.
Dr. Lyss was a community-based medical oncologist and clinical researcher for more than 35 years before his recent retirement. His clinical and research interests were focused on breast and lung cancers as well as expanding clinical trial access to medically underserved populations. He is based in St. Louis. He has no conflicts of interest.
Source: Gupta A et al. Nat Med. 2020 Jul;26(7):1017-32.
FROM NATURE MEDICINE