User login
MDedge conference coverage features onsite reporting of the latest study results and expert perspectives from leading researchers.
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
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
How to set up your hyperhidrosis patients for treatment success
When children and adolescents first present to George Hightower, MD, PhD, with suspected primary hyperhidrosis, he tries to gauge their level of impairment and distress.
“I ask my patients directly: ‘Does this get in the way of doing things you enjoy?’ ” Dr. Hightower said during the virtual Pediatric Dermatology 2020: Best Practices and Innovations Conference. If they say yes, he then asks, “‘What are those things that it gets in the way of?’ Also, so that I can develop a rapport with them, I ask, ‘Is it causing you to view yourself negatively?’ I also ask them how they anticipate treatment is going to change that.”
Dr. Hightower, of the departments of dermatology and pediatrics, University of California, San Diego, and a pediatric dermatologist at Rady Children’s Hospital, defined focal primary hyperhidrosis as focal, visible, excessive sweating for at least 6 months without an apparent cause, plus at least two of the following characteristics: bilateral and relatively symmetric, sweating that impairs daily activities, onset before age 25, at least one episode per week, family history of idiopathic hyperhidrosis, and focal sweating that stops during sleep.
“Based on their prominence in the popular media, armpits relative to body surface area play an oversized role in our patients’ perception of well-being,” he said. “Most of all, patients’ concerns regarding their armpits include one more of the following symptoms: smelly, sweaty, red, and itchy or painful.”
Topical antiperspirants are the preferred initial treatment. “They’re widely available, inexpensive, and well-tolerated therapies,” Dr. Hightower said. Most commercially available antiperspirants contain low-dose aluminum or other metal that keeps the sweat gland ducts from opening.
“Most patients referred to me have failed to improve with over-the-counter antiperspirants or aluminum chloride 20%,” he said. “We start by reviewing the appropriate use of aluminum chloride 20%. If they’re using it appropriately and fail to achieve adequate control, I open the discussion to use glycopyrronium tosylate cloth 2.4%, applied daily. This can be cost prohibitive or not covered by insurance.” Other options include glycopyrrolate 1-6 mg daily and microwave-based procedural intervention.
In a post hoc analysis, researchers examined the efficacy and safety findings by age from two phase three randomized, controlled trials of glycopyrronium tosylate in pediatric primary axillary hyperhidrosis (Pediatr Dermatol. 2019 Jan-Feb;36[1]:89-99). It was well tolerated in the 19 patients aged 9-16 years. “No patients discontinued from the study in this age group [because of] symptomatology,” said Dr. Hightower, who was not involved with the study. “The concerns related to this medication are related to anticholinergic effects such as blurry vision and dry mouth, but overall, randomized clinical trial data support the benefit of this medication in helping patients improve the symptoms of hyperhidrosis.”
In an earlier study, researchers retrospectively studied children with hyperhidrosis who were treated with a mean dosage of 2 mg glycopyrronium tosylate daily (J Am Acad Dermatol 2012 Nov;67[5]:918-23). The average age of patients was 15 years. Most (90%) experienced some improvement and 71% of those who responded saw major improvement. This occurred within hours of administration and disappeared within a day of discontinuation. The two most common side effects were dry mouth (26%) and dry eyes (10%). More worrisome side effects were associated with higher dosing, including blurring of vision (3%) and sensation of palpitations (3%).
When patients return for their first follow-up appointment after starting a treatment plan, Dr. Hightower revisits their level of impairment and distress with hyperhidrosis. “I ask, ‘Remember that activity that you were doing before that this was getting in the way of? Are you doing that more? Do you feel like you can do that in a way that you weren’t able to do before, whether it’s playing an instrument or spending time with friends?’ ”
He also sets expectations with patients and their families with comments such as, “If this treatment does not work for you after 2 months, the next option I would consider is ...” and, “for most people there is no cure, but treatment is helpful.” He also emphasizes the importance of follow-up care, so they “come back to assess the next steps.”
Dr. Hightower reported having no financial disclosures.
When children and adolescents first present to George Hightower, MD, PhD, with suspected primary hyperhidrosis, he tries to gauge their level of impairment and distress.
“I ask my patients directly: ‘Does this get in the way of doing things you enjoy?’ ” Dr. Hightower said during the virtual Pediatric Dermatology 2020: Best Practices and Innovations Conference. If they say yes, he then asks, “‘What are those things that it gets in the way of?’ Also, so that I can develop a rapport with them, I ask, ‘Is it causing you to view yourself negatively?’ I also ask them how they anticipate treatment is going to change that.”
Dr. Hightower, of the departments of dermatology and pediatrics, University of California, San Diego, and a pediatric dermatologist at Rady Children’s Hospital, defined focal primary hyperhidrosis as focal, visible, excessive sweating for at least 6 months without an apparent cause, plus at least two of the following characteristics: bilateral and relatively symmetric, sweating that impairs daily activities, onset before age 25, at least one episode per week, family history of idiopathic hyperhidrosis, and focal sweating that stops during sleep.
“Based on their prominence in the popular media, armpits relative to body surface area play an oversized role in our patients’ perception of well-being,” he said. “Most of all, patients’ concerns regarding their armpits include one more of the following symptoms: smelly, sweaty, red, and itchy or painful.”
Topical antiperspirants are the preferred initial treatment. “They’re widely available, inexpensive, and well-tolerated therapies,” Dr. Hightower said. Most commercially available antiperspirants contain low-dose aluminum or other metal that keeps the sweat gland ducts from opening.
“Most patients referred to me have failed to improve with over-the-counter antiperspirants or aluminum chloride 20%,” he said. “We start by reviewing the appropriate use of aluminum chloride 20%. If they’re using it appropriately and fail to achieve adequate control, I open the discussion to use glycopyrronium tosylate cloth 2.4%, applied daily. This can be cost prohibitive or not covered by insurance.” Other options include glycopyrrolate 1-6 mg daily and microwave-based procedural intervention.
In a post hoc analysis, researchers examined the efficacy and safety findings by age from two phase three randomized, controlled trials of glycopyrronium tosylate in pediatric primary axillary hyperhidrosis (Pediatr Dermatol. 2019 Jan-Feb;36[1]:89-99). It was well tolerated in the 19 patients aged 9-16 years. “No patients discontinued from the study in this age group [because of] symptomatology,” said Dr. Hightower, who was not involved with the study. “The concerns related to this medication are related to anticholinergic effects such as blurry vision and dry mouth, but overall, randomized clinical trial data support the benefit of this medication in helping patients improve the symptoms of hyperhidrosis.”
In an earlier study, researchers retrospectively studied children with hyperhidrosis who were treated with a mean dosage of 2 mg glycopyrronium tosylate daily (J Am Acad Dermatol 2012 Nov;67[5]:918-23). The average age of patients was 15 years. Most (90%) experienced some improvement and 71% of those who responded saw major improvement. This occurred within hours of administration and disappeared within a day of discontinuation. The two most common side effects were dry mouth (26%) and dry eyes (10%). More worrisome side effects were associated with higher dosing, including blurring of vision (3%) and sensation of palpitations (3%).
When patients return for their first follow-up appointment after starting a treatment plan, Dr. Hightower revisits their level of impairment and distress with hyperhidrosis. “I ask, ‘Remember that activity that you were doing before that this was getting in the way of? Are you doing that more? Do you feel like you can do that in a way that you weren’t able to do before, whether it’s playing an instrument or spending time with friends?’ ”
He also sets expectations with patients and their families with comments such as, “If this treatment does not work for you after 2 months, the next option I would consider is ...” and, “for most people there is no cure, but treatment is helpful.” He also emphasizes the importance of follow-up care, so they “come back to assess the next steps.”
Dr. Hightower reported having no financial disclosures.
When children and adolescents first present to George Hightower, MD, PhD, with suspected primary hyperhidrosis, he tries to gauge their level of impairment and distress.
“I ask my patients directly: ‘Does this get in the way of doing things you enjoy?’ ” Dr. Hightower said during the virtual Pediatric Dermatology 2020: Best Practices and Innovations Conference. If they say yes, he then asks, “‘What are those things that it gets in the way of?’ Also, so that I can develop a rapport with them, I ask, ‘Is it causing you to view yourself negatively?’ I also ask them how they anticipate treatment is going to change that.”
Dr. Hightower, of the departments of dermatology and pediatrics, University of California, San Diego, and a pediatric dermatologist at Rady Children’s Hospital, defined focal primary hyperhidrosis as focal, visible, excessive sweating for at least 6 months without an apparent cause, plus at least two of the following characteristics: bilateral and relatively symmetric, sweating that impairs daily activities, onset before age 25, at least one episode per week, family history of idiopathic hyperhidrosis, and focal sweating that stops during sleep.
“Based on their prominence in the popular media, armpits relative to body surface area play an oversized role in our patients’ perception of well-being,” he said. “Most of all, patients’ concerns regarding their armpits include one more of the following symptoms: smelly, sweaty, red, and itchy or painful.”
Topical antiperspirants are the preferred initial treatment. “They’re widely available, inexpensive, and well-tolerated therapies,” Dr. Hightower said. Most commercially available antiperspirants contain low-dose aluminum or other metal that keeps the sweat gland ducts from opening.
“Most patients referred to me have failed to improve with over-the-counter antiperspirants or aluminum chloride 20%,” he said. “We start by reviewing the appropriate use of aluminum chloride 20%. If they’re using it appropriately and fail to achieve adequate control, I open the discussion to use glycopyrronium tosylate cloth 2.4%, applied daily. This can be cost prohibitive or not covered by insurance.” Other options include glycopyrrolate 1-6 mg daily and microwave-based procedural intervention.
In a post hoc analysis, researchers examined the efficacy and safety findings by age from two phase three randomized, controlled trials of glycopyrronium tosylate in pediatric primary axillary hyperhidrosis (Pediatr Dermatol. 2019 Jan-Feb;36[1]:89-99). It was well tolerated in the 19 patients aged 9-16 years. “No patients discontinued from the study in this age group [because of] symptomatology,” said Dr. Hightower, who was not involved with the study. “The concerns related to this medication are related to anticholinergic effects such as blurry vision and dry mouth, but overall, randomized clinical trial data support the benefit of this medication in helping patients improve the symptoms of hyperhidrosis.”
In an earlier study, researchers retrospectively studied children with hyperhidrosis who were treated with a mean dosage of 2 mg glycopyrronium tosylate daily (J Am Acad Dermatol 2012 Nov;67[5]:918-23). The average age of patients was 15 years. Most (90%) experienced some improvement and 71% of those who responded saw major improvement. This occurred within hours of administration and disappeared within a day of discontinuation. The two most common side effects were dry mouth (26%) and dry eyes (10%). More worrisome side effects were associated with higher dosing, including blurring of vision (3%) and sensation of palpitations (3%).
When patients return for their first follow-up appointment after starting a treatment plan, Dr. Hightower revisits their level of impairment and distress with hyperhidrosis. “I ask, ‘Remember that activity that you were doing before that this was getting in the way of? Are you doing that more? Do you feel like you can do that in a way that you weren’t able to do before, whether it’s playing an instrument or spending time with friends?’ ”
He also sets expectations with patients and their families with comments such as, “If this treatment does not work for you after 2 months, the next option I would consider is ...” and, “for most people there is no cure, but treatment is helpful.” He also emphasizes the importance of follow-up care, so they “come back to assess the next steps.”
Dr. Hightower reported having no financial disclosures.
FROM PEDIATRIC DERMATOLOGY 2020
Tendyne transcatheter mitral valve shows sustained benefits at 2 years
Two-year outcomes following transcatheter mitral valve replacement with the Tendyne prosthesis showed durable control of mitral regurgitation, sustained improvement in quality of life and functional capacity, and a marked drop-off in the rate of hospitalization for heart failure, David W.M. Muller, MBBS, MD, reported at the virtual annual meeting of the European Association of Percutaneous Cardiovascular Interventions.
“The outcomes can be considered very acceptable considering the advanced age and underlying comorbidities. The data show that, at 2 years, we still have excellent control of the MR [mitral regurgitation], with more than 93% of patients having no MR at all, and there were no patients with 1+ or greater MR,” said Dr. Muller, director of cardiac catheterization laboratories at St. Vincent’s Hospital in Sydney.
He presented for the first time the 2-year results for the first 100 patients enrolled in the long-term Tendyne Expanded Clinical Study. The 1-year outcomes were reported previously (J Am Coll Cardiol. 2019 Mar 26;73[11]:1250-60).
The transcatheter Tendyne mitral valve system received European marketing approval in early 2020 for commercial use in patients with severe symptomatic MR who aren’t candidates for open surgery or transcatheter mitral repair using the MitraClip device. The Tendyne remains investigational in the United States, where a large phase 3 randomized head-to-head trial of the Tendyne device and the FDA-approved MitraClip is ongoing.
At enrollment, the first 100 patients in the long-term prospective Tendyne study averaged 75 years of age, 66% were New York Heart Association functional class III or IV, 89% had secondary or mixed etiology MR, and 39% had been hospitalized for heart failure during the preceding 6 months. Ninety-two percent of participants had 4+ MR before implantation. The group’s average Society of Thoracic Surgeons Predicted Risk of Mortality score was 7.8%.
The all-cause mortality rate was 27% at 1 year and 39% at 2 years, with 87% of deaths being attributable to cardiovascular causes. At 2 years, 82% of survivors were NYHA class I or II. Their Kansas City Cardiomyopathy Questionnaire score improved by 19.1 points from an average of 49 at baseline. There was no evidence of structural valve dysfunction. Their heart failure hospitalization rate improved from 1.3 events per patient per year to 0.6 per patient-year at 1 year and 0.51 at 2 years.
Discussant Francesco Maisano, MD, was favorably impressed by the acute outcomes of transcatheter mitral valve replacement with the Tendyne device.
“There were very few procedural or in-hospital complications. Success was obtained in almost every patient. There was no procedural mortality. The 30-day mortality of 6.0% was reasonable in patients with a baseline STS score of 7.8%; that’s pretty good, I would say,” observed Dr. Maisano, professor of cardiac surgery at the University of Zürich and a pioneer of catheter-based mitral and tricuspid interventions.
However, he voiced concerns about the 35% incidence of major bleeding and 5% rate of disabling stroke at 2 years, which he deemed “pretty high.”
“This underlies the open issue of anticoagulation following these kinds of procedures. This obviously requires further work in the next years,” he said.
Dr. Muller reported receiving research grants from and serving as a consultant to Abbott, which markets the MitraClip and is developing the Tendyne system. He also serves as a consultant to Edwards Lifesciences and Medtronic. Dr. Maisano also reported serving as a consultant to several medical device companies.
Two-year outcomes following transcatheter mitral valve replacement with the Tendyne prosthesis showed durable control of mitral regurgitation, sustained improvement in quality of life and functional capacity, and a marked drop-off in the rate of hospitalization for heart failure, David W.M. Muller, MBBS, MD, reported at the virtual annual meeting of the European Association of Percutaneous Cardiovascular Interventions.
“The outcomes can be considered very acceptable considering the advanced age and underlying comorbidities. The data show that, at 2 years, we still have excellent control of the MR [mitral regurgitation], with more than 93% of patients having no MR at all, and there were no patients with 1+ or greater MR,” said Dr. Muller, director of cardiac catheterization laboratories at St. Vincent’s Hospital in Sydney.
He presented for the first time the 2-year results for the first 100 patients enrolled in the long-term Tendyne Expanded Clinical Study. The 1-year outcomes were reported previously (J Am Coll Cardiol. 2019 Mar 26;73[11]:1250-60).
The transcatheter Tendyne mitral valve system received European marketing approval in early 2020 for commercial use in patients with severe symptomatic MR who aren’t candidates for open surgery or transcatheter mitral repair using the MitraClip device. The Tendyne remains investigational in the United States, where a large phase 3 randomized head-to-head trial of the Tendyne device and the FDA-approved MitraClip is ongoing.
At enrollment, the first 100 patients in the long-term prospective Tendyne study averaged 75 years of age, 66% were New York Heart Association functional class III or IV, 89% had secondary or mixed etiology MR, and 39% had been hospitalized for heart failure during the preceding 6 months. Ninety-two percent of participants had 4+ MR before implantation. The group’s average Society of Thoracic Surgeons Predicted Risk of Mortality score was 7.8%.
The all-cause mortality rate was 27% at 1 year and 39% at 2 years, with 87% of deaths being attributable to cardiovascular causes. At 2 years, 82% of survivors were NYHA class I or II. Their Kansas City Cardiomyopathy Questionnaire score improved by 19.1 points from an average of 49 at baseline. There was no evidence of structural valve dysfunction. Their heart failure hospitalization rate improved from 1.3 events per patient per year to 0.6 per patient-year at 1 year and 0.51 at 2 years.
Discussant Francesco Maisano, MD, was favorably impressed by the acute outcomes of transcatheter mitral valve replacement with the Tendyne device.
“There were very few procedural or in-hospital complications. Success was obtained in almost every patient. There was no procedural mortality. The 30-day mortality of 6.0% was reasonable in patients with a baseline STS score of 7.8%; that’s pretty good, I would say,” observed Dr. Maisano, professor of cardiac surgery at the University of Zürich and a pioneer of catheter-based mitral and tricuspid interventions.
However, he voiced concerns about the 35% incidence of major bleeding and 5% rate of disabling stroke at 2 years, which he deemed “pretty high.”
“This underlies the open issue of anticoagulation following these kinds of procedures. This obviously requires further work in the next years,” he said.
Dr. Muller reported receiving research grants from and serving as a consultant to Abbott, which markets the MitraClip and is developing the Tendyne system. He also serves as a consultant to Edwards Lifesciences and Medtronic. Dr. Maisano also reported serving as a consultant to several medical device companies.
Two-year outcomes following transcatheter mitral valve replacement with the Tendyne prosthesis showed durable control of mitral regurgitation, sustained improvement in quality of life and functional capacity, and a marked drop-off in the rate of hospitalization for heart failure, David W.M. Muller, MBBS, MD, reported at the virtual annual meeting of the European Association of Percutaneous Cardiovascular Interventions.
“The outcomes can be considered very acceptable considering the advanced age and underlying comorbidities. The data show that, at 2 years, we still have excellent control of the MR [mitral regurgitation], with more than 93% of patients having no MR at all, and there were no patients with 1+ or greater MR,” said Dr. Muller, director of cardiac catheterization laboratories at St. Vincent’s Hospital in Sydney.
He presented for the first time the 2-year results for the first 100 patients enrolled in the long-term Tendyne Expanded Clinical Study. The 1-year outcomes were reported previously (J Am Coll Cardiol. 2019 Mar 26;73[11]:1250-60).
The transcatheter Tendyne mitral valve system received European marketing approval in early 2020 for commercial use in patients with severe symptomatic MR who aren’t candidates for open surgery or transcatheter mitral repair using the MitraClip device. The Tendyne remains investigational in the United States, where a large phase 3 randomized head-to-head trial of the Tendyne device and the FDA-approved MitraClip is ongoing.
At enrollment, the first 100 patients in the long-term prospective Tendyne study averaged 75 years of age, 66% were New York Heart Association functional class III or IV, 89% had secondary or mixed etiology MR, and 39% had been hospitalized for heart failure during the preceding 6 months. Ninety-two percent of participants had 4+ MR before implantation. The group’s average Society of Thoracic Surgeons Predicted Risk of Mortality score was 7.8%.
The all-cause mortality rate was 27% at 1 year and 39% at 2 years, with 87% of deaths being attributable to cardiovascular causes. At 2 years, 82% of survivors were NYHA class I or II. Their Kansas City Cardiomyopathy Questionnaire score improved by 19.1 points from an average of 49 at baseline. There was no evidence of structural valve dysfunction. Their heart failure hospitalization rate improved from 1.3 events per patient per year to 0.6 per patient-year at 1 year and 0.51 at 2 years.
Discussant Francesco Maisano, MD, was favorably impressed by the acute outcomes of transcatheter mitral valve replacement with the Tendyne device.
“There were very few procedural or in-hospital complications. Success was obtained in almost every patient. There was no procedural mortality. The 30-day mortality of 6.0% was reasonable in patients with a baseline STS score of 7.8%; that’s pretty good, I would say,” observed Dr. Maisano, professor of cardiac surgery at the University of Zürich and a pioneer of catheter-based mitral and tricuspid interventions.
However, he voiced concerns about the 35% incidence of major bleeding and 5% rate of disabling stroke at 2 years, which he deemed “pretty high.”
“This underlies the open issue of anticoagulation following these kinds of procedures. This obviously requires further work in the next years,” he said.
Dr. Muller reported receiving research grants from and serving as a consultant to Abbott, which markets the MitraClip and is developing the Tendyne system. He also serves as a consultant to Edwards Lifesciences and Medtronic. Dr. Maisano also reported serving as a consultant to several medical device companies.
FROM EUROPCR 2020
MIS-C is a serious immune-mediated response to COVID-19 infection
One of the take-away messages from a review of multisystem inflammatory syndrome in children (MIS-C) is that clinicians treating this condition “need to be comfortable with uncertainty,” Melissa Hazen, MD, said at a synthesis of multiple published case series and personal experience summarized at the virtual Pediatric Hospital Medicine meeting.
She emphasized MIS-C patient care “requires flexibility,” and she advised clinicians managing these patients to open the lines of communication with the many specialists who often are required to deal with complications affecting an array of organ systems.
MIS-C might best be understood as the most serious manifestation of an immune-mediated response to COVID-19 infection that ranges from transient mild symptoms to the life-threatening multiple organ involvement that characterizes this newly recognized threat. Although “most children who encounter this pathogen only develop mild disease,” the spectrum of the disease can move in a subset of patients to a “Kawasaki-like illness” without hemodynamic instability and then to MIS-C “with highly elevated systemic inflammatory markers and multiple organ involvement,” explained Dr. Hazen, an attending physician in the rheumatology program at Boston Children’s Hospital.
most of which have only recently reached publication, according to Dr. Hazen. In general, the description of the most common symptoms and their course has been relatively consistent.
In 186 cases of MIS-C collected in a study funded by the Centers for Disease Control and Prevention, 148 (80%) were admitted to intensive care, 90 patients (48%) received vasoactive support, 37 (20%) received mechanical ventilation, and 4 (2%) died.1 The median age was 8 years (range, 3-13 years) in this study. The case definition was fever for at least 24 hours, laboratory evidence of inflammation, multisystem organ involvement, and evidence of COVID-19 infection. In this cohort of 186 children, 92% had gastrointestinal, 80% had cardiovascular, 76% had hematologic, and 70% had respiratory system involvement.
In a different series of 95 cases collected in New York State, 79 (80%) were admitted to intensive care, 61 (62%) received vasoactive support, 10 (10%) received mechanical ventilation, 4 (4%) received extracorporeal membrane oxygenation (ECMO), and 2 (2%) died. 2 Thirty-one percent patients were aged 0-5 years, 42% were 6-12 years, and 26% were 13-20 years of age. In that series, for which the case definition was elevation of two or more inflammatory markers, virologic evidence of COVID-19 infection, 80% had gastrointestinal system involvement, and 53% had evidence of myocarditis.
In both of these series, as well as others published and unpublished, the peak in MIS-C cases has occurred about 3 to 4 weeks after peak COVID-19 activity, according to Diana Lee, MD, a pediatrician at Icahn School of Medicine at Mount Sinai, New York. This pattern, reported by others, was observed in New York State, where 230 cases of MIS-C were collected from the beginning of May until the end of June, which reflected this 3- to 4-week delay in peak incidence.
“This does seem to be a rare syndrome since this [group of] 230 cases is amongst the entire population of children in New York State. So, yes, we should be keeping this in mind in our differential, but we should not forget all the other reasons that children can have a fever,” she said.
Both Dr. Hazen and Dr. Lee cautioned that MIS-C, despite a general consistency among published studies, remains a moving target in regard to how it is being characterized. In a 2-day period in May, the CDC, the World Health Organization, and New York State all issued descriptions of MIS-C, employing compatible but slightly different terminology and diagnostic criteria. Many questions regarding optimal methods of diagnosis, treatment, and follow-up remain unanswered.
Questions regarding the risk to the cardiovascular system, one of the organs most commonly affected in MIS-C, are among the most urgent. It is not now clear how best to monitor cardiovascular involvement, how to intervene, and how to follow patients in the postinfection period, according to Kevin G. Friedman, MD, a pediatrician at Harvard Medical School, Boston, and an attending physician in the department of cardiology at Boston Children’s Hospital.
“The most frequent complication we have seen is ventricular dysfunction, which occurs in about half of these patients,” he reported. “Usually it is in the mild to moderate range, but occasionally patients have an ejection fraction of less than 40%.”
Coronary abnormalities, typically in the form of dilations or small aneurysms, occur in 10%-20% of children with MIS-C, according to Dr. Friedman. Giant aneurysms have been reported.
“Some of these findings can progress including in both the acute phase and, particularly for the coronary aneurysms, in the subacute phase. We recommend echocardiograms and EKGs at diagnosis and at 1-2 weeks to recheck coronary size or sooner if there are clinical indications,” Dr. Friedman advised.
Protocols like these are constantly under review as more information becomes available. There are as yet no guidelines, and practice differs across institutions, according to the investigators summarizing this information.
None of the speakers had any relevant financial disclosures.
References
1. Feldstein LR et al. Multisystem inflammatory syndrome in U.S. children and adolescents. N Engl J Med. 2020;383:334-46.
2. Dufort EM et al. Multisystem inflammatory syndrome in children in New York State. N Engl J Med 2020;383:347-58.
One of the take-away messages from a review of multisystem inflammatory syndrome in children (MIS-C) is that clinicians treating this condition “need to be comfortable with uncertainty,” Melissa Hazen, MD, said at a synthesis of multiple published case series and personal experience summarized at the virtual Pediatric Hospital Medicine meeting.
She emphasized MIS-C patient care “requires flexibility,” and she advised clinicians managing these patients to open the lines of communication with the many specialists who often are required to deal with complications affecting an array of organ systems.
MIS-C might best be understood as the most serious manifestation of an immune-mediated response to COVID-19 infection that ranges from transient mild symptoms to the life-threatening multiple organ involvement that characterizes this newly recognized threat. Although “most children who encounter this pathogen only develop mild disease,” the spectrum of the disease can move in a subset of patients to a “Kawasaki-like illness” without hemodynamic instability and then to MIS-C “with highly elevated systemic inflammatory markers and multiple organ involvement,” explained Dr. Hazen, an attending physician in the rheumatology program at Boston Children’s Hospital.
most of which have only recently reached publication, according to Dr. Hazen. In general, the description of the most common symptoms and their course has been relatively consistent.
In 186 cases of MIS-C collected in a study funded by the Centers for Disease Control and Prevention, 148 (80%) were admitted to intensive care, 90 patients (48%) received vasoactive support, 37 (20%) received mechanical ventilation, and 4 (2%) died.1 The median age was 8 years (range, 3-13 years) in this study. The case definition was fever for at least 24 hours, laboratory evidence of inflammation, multisystem organ involvement, and evidence of COVID-19 infection. In this cohort of 186 children, 92% had gastrointestinal, 80% had cardiovascular, 76% had hematologic, and 70% had respiratory system involvement.
In a different series of 95 cases collected in New York State, 79 (80%) were admitted to intensive care, 61 (62%) received vasoactive support, 10 (10%) received mechanical ventilation, 4 (4%) received extracorporeal membrane oxygenation (ECMO), and 2 (2%) died. 2 Thirty-one percent patients were aged 0-5 years, 42% were 6-12 years, and 26% were 13-20 years of age. In that series, for which the case definition was elevation of two or more inflammatory markers, virologic evidence of COVID-19 infection, 80% had gastrointestinal system involvement, and 53% had evidence of myocarditis.
In both of these series, as well as others published and unpublished, the peak in MIS-C cases has occurred about 3 to 4 weeks after peak COVID-19 activity, according to Diana Lee, MD, a pediatrician at Icahn School of Medicine at Mount Sinai, New York. This pattern, reported by others, was observed in New York State, where 230 cases of MIS-C were collected from the beginning of May until the end of June, which reflected this 3- to 4-week delay in peak incidence.
“This does seem to be a rare syndrome since this [group of] 230 cases is amongst the entire population of children in New York State. So, yes, we should be keeping this in mind in our differential, but we should not forget all the other reasons that children can have a fever,” she said.
Both Dr. Hazen and Dr. Lee cautioned that MIS-C, despite a general consistency among published studies, remains a moving target in regard to how it is being characterized. In a 2-day period in May, the CDC, the World Health Organization, and New York State all issued descriptions of MIS-C, employing compatible but slightly different terminology and diagnostic criteria. Many questions regarding optimal methods of diagnosis, treatment, and follow-up remain unanswered.
Questions regarding the risk to the cardiovascular system, one of the organs most commonly affected in MIS-C, are among the most urgent. It is not now clear how best to monitor cardiovascular involvement, how to intervene, and how to follow patients in the postinfection period, according to Kevin G. Friedman, MD, a pediatrician at Harvard Medical School, Boston, and an attending physician in the department of cardiology at Boston Children’s Hospital.
“The most frequent complication we have seen is ventricular dysfunction, which occurs in about half of these patients,” he reported. “Usually it is in the mild to moderate range, but occasionally patients have an ejection fraction of less than 40%.”
Coronary abnormalities, typically in the form of dilations or small aneurysms, occur in 10%-20% of children with MIS-C, according to Dr. Friedman. Giant aneurysms have been reported.
“Some of these findings can progress including in both the acute phase and, particularly for the coronary aneurysms, in the subacute phase. We recommend echocardiograms and EKGs at diagnosis and at 1-2 weeks to recheck coronary size or sooner if there are clinical indications,” Dr. Friedman advised.
Protocols like these are constantly under review as more information becomes available. There are as yet no guidelines, and practice differs across institutions, according to the investigators summarizing this information.
None of the speakers had any relevant financial disclosures.
References
1. Feldstein LR et al. Multisystem inflammatory syndrome in U.S. children and adolescents. N Engl J Med. 2020;383:334-46.
2. Dufort EM et al. Multisystem inflammatory syndrome in children in New York State. N Engl J Med 2020;383:347-58.
One of the take-away messages from a review of multisystem inflammatory syndrome in children (MIS-C) is that clinicians treating this condition “need to be comfortable with uncertainty,” Melissa Hazen, MD, said at a synthesis of multiple published case series and personal experience summarized at the virtual Pediatric Hospital Medicine meeting.
She emphasized MIS-C patient care “requires flexibility,” and she advised clinicians managing these patients to open the lines of communication with the many specialists who often are required to deal with complications affecting an array of organ systems.
MIS-C might best be understood as the most serious manifestation of an immune-mediated response to COVID-19 infection that ranges from transient mild symptoms to the life-threatening multiple organ involvement that characterizes this newly recognized threat. Although “most children who encounter this pathogen only develop mild disease,” the spectrum of the disease can move in a subset of patients to a “Kawasaki-like illness” without hemodynamic instability and then to MIS-C “with highly elevated systemic inflammatory markers and multiple organ involvement,” explained Dr. Hazen, an attending physician in the rheumatology program at Boston Children’s Hospital.
most of which have only recently reached publication, according to Dr. Hazen. In general, the description of the most common symptoms and their course has been relatively consistent.
In 186 cases of MIS-C collected in a study funded by the Centers for Disease Control and Prevention, 148 (80%) were admitted to intensive care, 90 patients (48%) received vasoactive support, 37 (20%) received mechanical ventilation, and 4 (2%) died.1 The median age was 8 years (range, 3-13 years) in this study. The case definition was fever for at least 24 hours, laboratory evidence of inflammation, multisystem organ involvement, and evidence of COVID-19 infection. In this cohort of 186 children, 92% had gastrointestinal, 80% had cardiovascular, 76% had hematologic, and 70% had respiratory system involvement.
In a different series of 95 cases collected in New York State, 79 (80%) were admitted to intensive care, 61 (62%) received vasoactive support, 10 (10%) received mechanical ventilation, 4 (4%) received extracorporeal membrane oxygenation (ECMO), and 2 (2%) died. 2 Thirty-one percent patients were aged 0-5 years, 42% were 6-12 years, and 26% were 13-20 years of age. In that series, for which the case definition was elevation of two or more inflammatory markers, virologic evidence of COVID-19 infection, 80% had gastrointestinal system involvement, and 53% had evidence of myocarditis.
In both of these series, as well as others published and unpublished, the peak in MIS-C cases has occurred about 3 to 4 weeks after peak COVID-19 activity, according to Diana Lee, MD, a pediatrician at Icahn School of Medicine at Mount Sinai, New York. This pattern, reported by others, was observed in New York State, where 230 cases of MIS-C were collected from the beginning of May until the end of June, which reflected this 3- to 4-week delay in peak incidence.
“This does seem to be a rare syndrome since this [group of] 230 cases is amongst the entire population of children in New York State. So, yes, we should be keeping this in mind in our differential, but we should not forget all the other reasons that children can have a fever,” she said.
Both Dr. Hazen and Dr. Lee cautioned that MIS-C, despite a general consistency among published studies, remains a moving target in regard to how it is being characterized. In a 2-day period in May, the CDC, the World Health Organization, and New York State all issued descriptions of MIS-C, employing compatible but slightly different terminology and diagnostic criteria. Many questions regarding optimal methods of diagnosis, treatment, and follow-up remain unanswered.
Questions regarding the risk to the cardiovascular system, one of the organs most commonly affected in MIS-C, are among the most urgent. It is not now clear how best to monitor cardiovascular involvement, how to intervene, and how to follow patients in the postinfection period, according to Kevin G. Friedman, MD, a pediatrician at Harvard Medical School, Boston, and an attending physician in the department of cardiology at Boston Children’s Hospital.
“The most frequent complication we have seen is ventricular dysfunction, which occurs in about half of these patients,” he reported. “Usually it is in the mild to moderate range, but occasionally patients have an ejection fraction of less than 40%.”
Coronary abnormalities, typically in the form of dilations or small aneurysms, occur in 10%-20% of children with MIS-C, according to Dr. Friedman. Giant aneurysms have been reported.
“Some of these findings can progress including in both the acute phase and, particularly for the coronary aneurysms, in the subacute phase. We recommend echocardiograms and EKGs at diagnosis and at 1-2 weeks to recheck coronary size or sooner if there are clinical indications,” Dr. Friedman advised.
Protocols like these are constantly under review as more information becomes available. There are as yet no guidelines, and practice differs across institutions, according to the investigators summarizing this information.
None of the speakers had any relevant financial disclosures.
References
1. Feldstein LR et al. Multisystem inflammatory syndrome in U.S. children and adolescents. N Engl J Med. 2020;383:334-46.
2. Dufort EM et al. Multisystem inflammatory syndrome in children in New York State. N Engl J Med 2020;383:347-58.
FROM PHM20 VIRTUAL
Robotic renal surgery bests open partial nephrectomy
RAPN was associated with a 61% decrease in intraoperative complications and a 71% decrease in overall complications in the IRON study.
Alessandro Larcher, MD, of San Raffaele Hospital and the Urological Research Institute in Milan, presented results from IRON during a live poster session at the virtual annual congress of the European Association of Urology.
The IRON study was performed in nine high-volume centers and involved 3,468 patients with renal cell cancer. Patients were recruited if they had a localized renal cell mass (cT1-2) with no nodal involvement or metastases. There were 2,405 patients who underwent RAPN and 1,063 who underwent OPN.
Intraoperative complications occurred in 5.7% of patients who underwent RAPN and in 9.3% of those who underwent OPN. Overall complications occurred in 33% and 18%, respectively (P < .001 for both).
“The complication profile was invariably in favor of robot-assisted surgery,” Dr. Larcher observed.
Patients who underwent RAPN had less estimated median blood loss (150 mL vs. 180 mL, P < .001) as well as lower rates of hemorrhagic complications (6.4% vs. 9%, P < .01) and urinary leakage (0.8% vs. 4.6%, P < .01).
The operative time was longer with RAPN than with OPN, at a median of 150 minutes and 120 minutes, respectively (P < .001). However, patients remained in the hospital for less time with RAPN than with OPN, at a median of 4 days and 6 days, respectively (P < .01).
RAPN was associated with fewer surgical complications than OPN according to the Clavien-Dindo system. Grade 2 or higher complications occurred in 12% and 20% of patients, respectively (P < .001). Grade 3 or higher complications occurred in 4% and 6.1%, respectively (P < .001).
“The benefit with respect to the complication risk reduction in the case of robot-assisted surgery was not affected by the tumor complexity, by the dimension of the mass, the comorbidities of the patients, or the baseline renal function,” Dr. Larcher said. “[T]he advantage after robot-assisted surgery is consistent regardless of all these features.”
Early renal function was better after OPN, but there was no significant difference between the two groups at 1 year of follow-up. The median ischemia time was 15 minutes with OPN and 16 minutes with RAPN (P < .001).
Postoperatively, the median estimated glomerular filtration rate was 78 mL/min/1.73m2 with OPN and 76 mL/min/1.73m2 with RAPN (P < .001). At 1 year, the median estimated glomerular filtration rate was 68 and 71 mL/min/1.73m2, respectively (P = .5).
Dr. Larcher noted that there was no difference between RAPN and OPN in terms of 5-year oncologic outcomes. Local recurrence occurred in 1.6% and 2.1% of patients, respectively (P = .06); systemic progression was seen in 1.8% and 4.5%, respectively (P = .5); and clinical progression was observed in 3.2% and 6.6%, respectively (P = .9).
“[IRON is] a really powerful study. It’s one of those studies that kind of has to be done,” said Ben Challacombe, MBBS, a consultant urological surgeon at Guy’s Hospital and St. Thomas’ Hospital in London who chaired the poster session during which these findings were presented.
Dr. Challacombe, who specializes in the treatment of kidney and prostatic disease using robotic surgery, noted that about 75% of procedures in the United Kingdom are now being performed with robotic assistance and queried what percentage of procedures should still be done by open surgery.
“I would turn it,” Dr. Larcher said. “What is the percentage of surgeons that should use one technique or the other?” In the IRON study, as well as other studies, surgical expertise, training, and center volumes were important.
“What the data are telling us is that those who are really confident in robotic surgeries can achieve even better outcomes, also in very complex cases,” Dr. Larcher said. “I think it’s not any longer dependent on the tumor factors. The answer to the question is only determined by human factors.”
The IRON study was supported by a grant from Intuitive. Dr. Larcher declared no conflicts of interest. Dr. Challacombe did not present any disclosures.
SOURCE: Larcher A et al. EAU20, Abstract 30. Eur Urol Open Sci 2020;19(Suppl 2):e142.
RAPN was associated with a 61% decrease in intraoperative complications and a 71% decrease in overall complications in the IRON study.
Alessandro Larcher, MD, of San Raffaele Hospital and the Urological Research Institute in Milan, presented results from IRON during a live poster session at the virtual annual congress of the European Association of Urology.
The IRON study was performed in nine high-volume centers and involved 3,468 patients with renal cell cancer. Patients were recruited if they had a localized renal cell mass (cT1-2) with no nodal involvement or metastases. There were 2,405 patients who underwent RAPN and 1,063 who underwent OPN.
Intraoperative complications occurred in 5.7% of patients who underwent RAPN and in 9.3% of those who underwent OPN. Overall complications occurred in 33% and 18%, respectively (P < .001 for both).
“The complication profile was invariably in favor of robot-assisted surgery,” Dr. Larcher observed.
Patients who underwent RAPN had less estimated median blood loss (150 mL vs. 180 mL, P < .001) as well as lower rates of hemorrhagic complications (6.4% vs. 9%, P < .01) and urinary leakage (0.8% vs. 4.6%, P < .01).
The operative time was longer with RAPN than with OPN, at a median of 150 minutes and 120 minutes, respectively (P < .001). However, patients remained in the hospital for less time with RAPN than with OPN, at a median of 4 days and 6 days, respectively (P < .01).
RAPN was associated with fewer surgical complications than OPN according to the Clavien-Dindo system. Grade 2 or higher complications occurred in 12% and 20% of patients, respectively (P < .001). Grade 3 or higher complications occurred in 4% and 6.1%, respectively (P < .001).
“The benefit with respect to the complication risk reduction in the case of robot-assisted surgery was not affected by the tumor complexity, by the dimension of the mass, the comorbidities of the patients, or the baseline renal function,” Dr. Larcher said. “[T]he advantage after robot-assisted surgery is consistent regardless of all these features.”
Early renal function was better after OPN, but there was no significant difference between the two groups at 1 year of follow-up. The median ischemia time was 15 minutes with OPN and 16 minutes with RAPN (P < .001).
Postoperatively, the median estimated glomerular filtration rate was 78 mL/min/1.73m2 with OPN and 76 mL/min/1.73m2 with RAPN (P < .001). At 1 year, the median estimated glomerular filtration rate was 68 and 71 mL/min/1.73m2, respectively (P = .5).
Dr. Larcher noted that there was no difference between RAPN and OPN in terms of 5-year oncologic outcomes. Local recurrence occurred in 1.6% and 2.1% of patients, respectively (P = .06); systemic progression was seen in 1.8% and 4.5%, respectively (P = .5); and clinical progression was observed in 3.2% and 6.6%, respectively (P = .9).
“[IRON is] a really powerful study. It’s one of those studies that kind of has to be done,” said Ben Challacombe, MBBS, a consultant urological surgeon at Guy’s Hospital and St. Thomas’ Hospital in London who chaired the poster session during which these findings were presented.
Dr. Challacombe, who specializes in the treatment of kidney and prostatic disease using robotic surgery, noted that about 75% of procedures in the United Kingdom are now being performed with robotic assistance and queried what percentage of procedures should still be done by open surgery.
“I would turn it,” Dr. Larcher said. “What is the percentage of surgeons that should use one technique or the other?” In the IRON study, as well as other studies, surgical expertise, training, and center volumes were important.
“What the data are telling us is that those who are really confident in robotic surgeries can achieve even better outcomes, also in very complex cases,” Dr. Larcher said. “I think it’s not any longer dependent on the tumor factors. The answer to the question is only determined by human factors.”
The IRON study was supported by a grant from Intuitive. Dr. Larcher declared no conflicts of interest. Dr. Challacombe did not present any disclosures.
SOURCE: Larcher A et al. EAU20, Abstract 30. Eur Urol Open Sci 2020;19(Suppl 2):e142.
RAPN was associated with a 61% decrease in intraoperative complications and a 71% decrease in overall complications in the IRON study.
Alessandro Larcher, MD, of San Raffaele Hospital and the Urological Research Institute in Milan, presented results from IRON during a live poster session at the virtual annual congress of the European Association of Urology.
The IRON study was performed in nine high-volume centers and involved 3,468 patients with renal cell cancer. Patients were recruited if they had a localized renal cell mass (cT1-2) with no nodal involvement or metastases. There were 2,405 patients who underwent RAPN and 1,063 who underwent OPN.
Intraoperative complications occurred in 5.7% of patients who underwent RAPN and in 9.3% of those who underwent OPN. Overall complications occurred in 33% and 18%, respectively (P < .001 for both).
“The complication profile was invariably in favor of robot-assisted surgery,” Dr. Larcher observed.
Patients who underwent RAPN had less estimated median blood loss (150 mL vs. 180 mL, P < .001) as well as lower rates of hemorrhagic complications (6.4% vs. 9%, P < .01) and urinary leakage (0.8% vs. 4.6%, P < .01).
The operative time was longer with RAPN than with OPN, at a median of 150 minutes and 120 minutes, respectively (P < .001). However, patients remained in the hospital for less time with RAPN than with OPN, at a median of 4 days and 6 days, respectively (P < .01).
RAPN was associated with fewer surgical complications than OPN according to the Clavien-Dindo system. Grade 2 or higher complications occurred in 12% and 20% of patients, respectively (P < .001). Grade 3 or higher complications occurred in 4% and 6.1%, respectively (P < .001).
“The benefit with respect to the complication risk reduction in the case of robot-assisted surgery was not affected by the tumor complexity, by the dimension of the mass, the comorbidities of the patients, or the baseline renal function,” Dr. Larcher said. “[T]he advantage after robot-assisted surgery is consistent regardless of all these features.”
Early renal function was better after OPN, but there was no significant difference between the two groups at 1 year of follow-up. The median ischemia time was 15 minutes with OPN and 16 minutes with RAPN (P < .001).
Postoperatively, the median estimated glomerular filtration rate was 78 mL/min/1.73m2 with OPN and 76 mL/min/1.73m2 with RAPN (P < .001). At 1 year, the median estimated glomerular filtration rate was 68 and 71 mL/min/1.73m2, respectively (P = .5).
Dr. Larcher noted that there was no difference between RAPN and OPN in terms of 5-year oncologic outcomes. Local recurrence occurred in 1.6% and 2.1% of patients, respectively (P = .06); systemic progression was seen in 1.8% and 4.5%, respectively (P = .5); and clinical progression was observed in 3.2% and 6.6%, respectively (P = .9).
“[IRON is] a really powerful study. It’s one of those studies that kind of has to be done,” said Ben Challacombe, MBBS, a consultant urological surgeon at Guy’s Hospital and St. Thomas’ Hospital in London who chaired the poster session during which these findings were presented.
Dr. Challacombe, who specializes in the treatment of kidney and prostatic disease using robotic surgery, noted that about 75% of procedures in the United Kingdom are now being performed with robotic assistance and queried what percentage of procedures should still be done by open surgery.
“I would turn it,” Dr. Larcher said. “What is the percentage of surgeons that should use one technique or the other?” In the IRON study, as well as other studies, surgical expertise, training, and center volumes were important.
“What the data are telling us is that those who are really confident in robotic surgeries can achieve even better outcomes, also in very complex cases,” Dr. Larcher said. “I think it’s not any longer dependent on the tumor factors. The answer to the question is only determined by human factors.”
The IRON study was supported by a grant from Intuitive. Dr. Larcher declared no conflicts of interest. Dr. Challacombe did not present any disclosures.
SOURCE: Larcher A et al. EAU20, Abstract 30. Eur Urol Open Sci 2020;19(Suppl 2):e142.
FROM EAU20
Database offers snapshot of common causes of pediatric allergic contact dermatitis
, according to an analysis of data from the Pediatric Allergic Contact Dermatitis Registry.
The registry is the first multicenter prospective database in the United States with a focus on pediatric allergic contact dermatitis. JiaDe (Jeff) Yu, MD, a dermatologist at Massachusetts General Hospital, Boston, was awarded a Dermatology Foundation Career Development Grant and formed the registry in 2018 “in an effort to gain a better understanding of allergic contact dermatitis in children,” Idy Tam, MS, said during the virtual annual meeting of the Society for Pediatric Dermatology. “There is currently limited data regarding the pediatric allergic contact dermatitis in the U.S., despite as many as 20% of children having allergic contact dermatitis.”
To date, the Pediatric Allergic Contact Dermatitis Registry consists of 10 academic medical centers with high volume pediatric patch testing across the United States: Massachusetts General Hospital, Boston; Brigham and Women’s Hospital, Boston; the University of Missouri–Columbia; Stanford (Calif.) University; the Medical University of South Carolina, Charleston; Texas Children’s Hospital, Houston; Northwestern University, Chicago; Emory University, Atlanta; Washington University, St. Louis; and the University of California, San Diego.
For the current analysis, Ms. Tam, a research fellow in the department of dermatology at Massachusetts General Hospital, and colleagues collected data on 218 patients under age 18 who were referred for an evaluation of allergic contact dermatitis at one of the 10 participating sites between January 2016 and June 2020.
The mean age of children at the time of their patch testing was 10 years, 62% were girls, and 66% had a history of atopic dermatitis (AD). Most (75%) were White, 14% were Black, 6% were Asian, the rest were from other racial backgrounds. The distribution of dermatitis varied; the top five most commonly affected sites were the face (62%), arms (35%), legs (29%), hands (27%), and neck (20%).
Ms. Tam reported that the mean number of allergens patch tested per child was 78. In all, 81% of children had one or more positive patch test reactions, with a similar rate among those with and without a history of AD (80% vs. 82%, respectively; P = .21). The five most common allergens were hydroperoxides of linalool (22%), nickel sulfate (19%), methylisothiazolinone (17%), cobalt chloride (13%), and fragrance mix I (12%).
The top two treatments at the time of patch testing were a topical corticosteroid (78%) and a topical calcineurin inhibitor (26%).
“This study has allowed for the increased collaboration among dermatologists with expertise in pediatric dermatology and allergic contact dermatitis,” concluded Ms. Tam, a fourth-year medical student at Tufts University, Boston. “We continue to actively seek further collaboration with a goal of creating the most comprehensive pediatric allergic contact dermatitis registry, which can improve our understanding of this condition in children and hopefully guide future research in this field.”
The work was recognized as one of the top poster abstracts at the meeting. The researchers reported having no relevant disclosures.
, according to an analysis of data from the Pediatric Allergic Contact Dermatitis Registry.
The registry is the first multicenter prospective database in the United States with a focus on pediatric allergic contact dermatitis. JiaDe (Jeff) Yu, MD, a dermatologist at Massachusetts General Hospital, Boston, was awarded a Dermatology Foundation Career Development Grant and formed the registry in 2018 “in an effort to gain a better understanding of allergic contact dermatitis in children,” Idy Tam, MS, said during the virtual annual meeting of the Society for Pediatric Dermatology. “There is currently limited data regarding the pediatric allergic contact dermatitis in the U.S., despite as many as 20% of children having allergic contact dermatitis.”
To date, the Pediatric Allergic Contact Dermatitis Registry consists of 10 academic medical centers with high volume pediatric patch testing across the United States: Massachusetts General Hospital, Boston; Brigham and Women’s Hospital, Boston; the University of Missouri–Columbia; Stanford (Calif.) University; the Medical University of South Carolina, Charleston; Texas Children’s Hospital, Houston; Northwestern University, Chicago; Emory University, Atlanta; Washington University, St. Louis; and the University of California, San Diego.
For the current analysis, Ms. Tam, a research fellow in the department of dermatology at Massachusetts General Hospital, and colleagues collected data on 218 patients under age 18 who were referred for an evaluation of allergic contact dermatitis at one of the 10 participating sites between January 2016 and June 2020.
The mean age of children at the time of their patch testing was 10 years, 62% were girls, and 66% had a history of atopic dermatitis (AD). Most (75%) were White, 14% were Black, 6% were Asian, the rest were from other racial backgrounds. The distribution of dermatitis varied; the top five most commonly affected sites were the face (62%), arms (35%), legs (29%), hands (27%), and neck (20%).
Ms. Tam reported that the mean number of allergens patch tested per child was 78. In all, 81% of children had one or more positive patch test reactions, with a similar rate among those with and without a history of AD (80% vs. 82%, respectively; P = .21). The five most common allergens were hydroperoxides of linalool (22%), nickel sulfate (19%), methylisothiazolinone (17%), cobalt chloride (13%), and fragrance mix I (12%).
The top two treatments at the time of patch testing were a topical corticosteroid (78%) and a topical calcineurin inhibitor (26%).
“This study has allowed for the increased collaboration among dermatologists with expertise in pediatric dermatology and allergic contact dermatitis,” concluded Ms. Tam, a fourth-year medical student at Tufts University, Boston. “We continue to actively seek further collaboration with a goal of creating the most comprehensive pediatric allergic contact dermatitis registry, which can improve our understanding of this condition in children and hopefully guide future research in this field.”
The work was recognized as one of the top poster abstracts at the meeting. The researchers reported having no relevant disclosures.
, according to an analysis of data from the Pediatric Allergic Contact Dermatitis Registry.
The registry is the first multicenter prospective database in the United States with a focus on pediatric allergic contact dermatitis. JiaDe (Jeff) Yu, MD, a dermatologist at Massachusetts General Hospital, Boston, was awarded a Dermatology Foundation Career Development Grant and formed the registry in 2018 “in an effort to gain a better understanding of allergic contact dermatitis in children,” Idy Tam, MS, said during the virtual annual meeting of the Society for Pediatric Dermatology. “There is currently limited data regarding the pediatric allergic contact dermatitis in the U.S., despite as many as 20% of children having allergic contact dermatitis.”
To date, the Pediatric Allergic Contact Dermatitis Registry consists of 10 academic medical centers with high volume pediatric patch testing across the United States: Massachusetts General Hospital, Boston; Brigham and Women’s Hospital, Boston; the University of Missouri–Columbia; Stanford (Calif.) University; the Medical University of South Carolina, Charleston; Texas Children’s Hospital, Houston; Northwestern University, Chicago; Emory University, Atlanta; Washington University, St. Louis; and the University of California, San Diego.
For the current analysis, Ms. Tam, a research fellow in the department of dermatology at Massachusetts General Hospital, and colleagues collected data on 218 patients under age 18 who were referred for an evaluation of allergic contact dermatitis at one of the 10 participating sites between January 2016 and June 2020.
The mean age of children at the time of their patch testing was 10 years, 62% were girls, and 66% had a history of atopic dermatitis (AD). Most (75%) were White, 14% were Black, 6% were Asian, the rest were from other racial backgrounds. The distribution of dermatitis varied; the top five most commonly affected sites were the face (62%), arms (35%), legs (29%), hands (27%), and neck (20%).
Ms. Tam reported that the mean number of allergens patch tested per child was 78. In all, 81% of children had one or more positive patch test reactions, with a similar rate among those with and without a history of AD (80% vs. 82%, respectively; P = .21). The five most common allergens were hydroperoxides of linalool (22%), nickel sulfate (19%), methylisothiazolinone (17%), cobalt chloride (13%), and fragrance mix I (12%).
The top two treatments at the time of patch testing were a topical corticosteroid (78%) and a topical calcineurin inhibitor (26%).
“This study has allowed for the increased collaboration among dermatologists with expertise in pediatric dermatology and allergic contact dermatitis,” concluded Ms. Tam, a fourth-year medical student at Tufts University, Boston. “We continue to actively seek further collaboration with a goal of creating the most comprehensive pediatric allergic contact dermatitis registry, which can improve our understanding of this condition in children and hopefully guide future research in this field.”
The work was recognized as one of the top poster abstracts at the meeting. The researchers reported having no relevant disclosures.
FROM SPD 2020
Americans getting more sunburns
, for reasons that are unclear, Nicole L. Bolick, MD, reported at the virtual annual meeting of the American Academy of Dermatology.
On the plus side, utilization of indoor tanning plunged in the United States during the same period, a statistic worth celebrating as a public health and legislative success, noted Dr. Bolick, who was at the Harvard T.H. Chan School of Public Health, Boston, when she conducted her study and is now at East Carolina University, Greenville, N.C.
More good news: Her analysis of data from 67,471 nationally representative participants in the Centers for Disease Control and Prevention’s National Health Information Survey for the years 2005, 2010, and 2015 also demonstrated that the public’s adoption of several key skin cancer prevention behaviors is on the rise, although she added that rates clearly remain suboptimal.
For example, the proportion of Americans who practice sun avoidance climbed from 31.7% in 2005 to 35.5% in 2010, and 36.8% in 2015 in a multivariate logistic regression analysis adjusted for demographics, alcohol use, location, smoking status, education level, health insurance, and family and personal history of skin cancer.
Similarly, the use of sunscreen always or most of the time when outdoors for more than 1 hour on a warm, sunny day rose from an adjusted 31.5% in 2005 to 33.1% in 2010 and to 34.3% in 2015.
Also, sun protective clothing – long pants, hats, and/or long-sleeved shirts – was utilized always or most of the time by 35.9% of respondents in 2005, 38.4% in 2010, and 37.2% in 2015.
In 2005, 19% of Americans reported having a lifetime history of a physician-performed full body skin examination. The prevalence of this secondary skin cancer prevention measure rose to 22.4% in 2010 and remained the same in 2015.
In the 2005 national survey, 14.1% of respondents reported engaging in indoor tanning within the past year. This figure dropped to 6.2% in 2010 and fell further to 4.1% in 2015.
A history of two or more sunburns within the past year was reported by 18.2% of subjects in 2005, by 21.1% in 2010, and by 19.9% in 2015. It’s unclear whether this unwelcome phenomenon is due to inadequate use of sun protection or increased awareness of the link between sun exposure and skin cancer, with a resultant increase in reporting of sunburns. The influence of climate change is another possible explanation worthy of further study, according to Dr. Bolick.
She reported having no financial conflicts regarding her study, conducted free of commercial support.
, for reasons that are unclear, Nicole L. Bolick, MD, reported at the virtual annual meeting of the American Academy of Dermatology.
On the plus side, utilization of indoor tanning plunged in the United States during the same period, a statistic worth celebrating as a public health and legislative success, noted Dr. Bolick, who was at the Harvard T.H. Chan School of Public Health, Boston, when she conducted her study and is now at East Carolina University, Greenville, N.C.
More good news: Her analysis of data from 67,471 nationally representative participants in the Centers for Disease Control and Prevention’s National Health Information Survey for the years 2005, 2010, and 2015 also demonstrated that the public’s adoption of several key skin cancer prevention behaviors is on the rise, although she added that rates clearly remain suboptimal.
For example, the proportion of Americans who practice sun avoidance climbed from 31.7% in 2005 to 35.5% in 2010, and 36.8% in 2015 in a multivariate logistic regression analysis adjusted for demographics, alcohol use, location, smoking status, education level, health insurance, and family and personal history of skin cancer.
Similarly, the use of sunscreen always or most of the time when outdoors for more than 1 hour on a warm, sunny day rose from an adjusted 31.5% in 2005 to 33.1% in 2010 and to 34.3% in 2015.
Also, sun protective clothing – long pants, hats, and/or long-sleeved shirts – was utilized always or most of the time by 35.9% of respondents in 2005, 38.4% in 2010, and 37.2% in 2015.
In 2005, 19% of Americans reported having a lifetime history of a physician-performed full body skin examination. The prevalence of this secondary skin cancer prevention measure rose to 22.4% in 2010 and remained the same in 2015.
In the 2005 national survey, 14.1% of respondents reported engaging in indoor tanning within the past year. This figure dropped to 6.2% in 2010 and fell further to 4.1% in 2015.
A history of two or more sunburns within the past year was reported by 18.2% of subjects in 2005, by 21.1% in 2010, and by 19.9% in 2015. It’s unclear whether this unwelcome phenomenon is due to inadequate use of sun protection or increased awareness of the link between sun exposure and skin cancer, with a resultant increase in reporting of sunburns. The influence of climate change is another possible explanation worthy of further study, according to Dr. Bolick.
She reported having no financial conflicts regarding her study, conducted free of commercial support.
, for reasons that are unclear, Nicole L. Bolick, MD, reported at the virtual annual meeting of the American Academy of Dermatology.
On the plus side, utilization of indoor tanning plunged in the United States during the same period, a statistic worth celebrating as a public health and legislative success, noted Dr. Bolick, who was at the Harvard T.H. Chan School of Public Health, Boston, when she conducted her study and is now at East Carolina University, Greenville, N.C.
More good news: Her analysis of data from 67,471 nationally representative participants in the Centers for Disease Control and Prevention’s National Health Information Survey for the years 2005, 2010, and 2015 also demonstrated that the public’s adoption of several key skin cancer prevention behaviors is on the rise, although she added that rates clearly remain suboptimal.
For example, the proportion of Americans who practice sun avoidance climbed from 31.7% in 2005 to 35.5% in 2010, and 36.8% in 2015 in a multivariate logistic regression analysis adjusted for demographics, alcohol use, location, smoking status, education level, health insurance, and family and personal history of skin cancer.
Similarly, the use of sunscreen always or most of the time when outdoors for more than 1 hour on a warm, sunny day rose from an adjusted 31.5% in 2005 to 33.1% in 2010 and to 34.3% in 2015.
Also, sun protective clothing – long pants, hats, and/or long-sleeved shirts – was utilized always or most of the time by 35.9% of respondents in 2005, 38.4% in 2010, and 37.2% in 2015.
In 2005, 19% of Americans reported having a lifetime history of a physician-performed full body skin examination. The prevalence of this secondary skin cancer prevention measure rose to 22.4% in 2010 and remained the same in 2015.
In the 2005 national survey, 14.1% of respondents reported engaging in indoor tanning within the past year. This figure dropped to 6.2% in 2010 and fell further to 4.1% in 2015.
A history of two or more sunburns within the past year was reported by 18.2% of subjects in 2005, by 21.1% in 2010, and by 19.9% in 2015. It’s unclear whether this unwelcome phenomenon is due to inadequate use of sun protection or increased awareness of the link between sun exposure and skin cancer, with a resultant increase in reporting of sunburns. The influence of climate change is another possible explanation worthy of further study, according to Dr. Bolick.
She reported having no financial conflicts regarding her study, conducted free of commercial support.
FROM AAD 20
CCC19, other registries help define COVID/cancer landscape
Initial results from the CCC19 registry were reported as part of the American Society of Clinical Oncology (ASCO) virtual scientific program and published in The Lancet (Lancet. 2020 Jun 20;395[10241]:1907-18).
The latest data were presented at the AACR virtual meeting: COVID-19 and Cancer by Brian I. Rini, MD, of Vanderbilt University, Nashville, Tenn. They were simultaneously published in Cancer Discovery (Cancer Discov. 2020 Jul 22;CD-20-0941).
The CCC19 registry was launched in March by a few institutions as part of “a grassroots idea ... to collect granular data regarding cancer patients and their outcomes with COVID,” Dr. Rini said.
Within a few months of its inception, the registry had partnered with more than 100 institutions worldwide and accrued data from more than 2,000 patients.
The reports in The Lancet and at ASCO included outcomes for the first 928 patients and showed a 13% mortality rate as well as a fivefold increase in the risk of 30-day mortality among patients with COVID-19 and progressing cancer.
The data also showed an increased mortality risk among older patients, men, former smokers, those with poor performance status, those with multiple comorbidities, and those treated with hydroxychloroquine and azithromycin.
The latest data
The CCC19 registry has grown to include 114 sites worldwide, including major comprehensive cancer centers and community sites. As of June 26, there were 2,749 patients enrolled.
Since the last data were reported, the mortality rate increased from 13% to 16% (versus 5% globally). In addition, the increased mortality risk among non-Hispanic black patients and patients with hematologic malignancies reached statistical significance, Dr. Rini said. He noted that the increase in mortality rate was largely attributable to improved follow-up.
Mechanical ventilation was required in 12% of patients, ICU admission was required in 16%, oxygen was required in 45%, and hospitalization was required in 60%. The composite outcome of death, severe illness requiring hospitalization, ICU admission, or mechanical ventilation was reached in 29% of patients, Dr. Rini said.
Mortality rates across cancer types ranged from 3% to 26%, with thyroid and breast cancer patients having the lowest rates (3% and 8%, respectively), and with lymphoma and lung cancer patients having the highest (22% and 26%, respectively), Dr. Rini said.
He noted that the TERAVOLT registry, a COVID-19 registry for patients with thoracic cancers, also showed a very high mortality rate in this subgroup of patients.
Results from TERAVOLT were reported at the AACR virtual meeting I, presented at ASCO, and published in The Lancet (Lancet Oncol. 2020 Jul;21[7]:914-22). The most recent results showed a mortality rate of nearly 36% and reinforce the high mortality rate seen in lung cancer patients in CCC19, Dr. Rini said.
Increased mortality risk
After adjustment for several demographic and disease characteristics, the updated CCC19 data showed a significantly increased risk of mortality among:
- Older patients (adjusted odds ratio [aOR] per decade of age, 1.52).
- Men (aOR, 1.43).
- Current or former smokers vs. never smokers (aOR, 1.28).
- Patients with Eastern Cooperative Oncology Group performance scores of 1 vs. 0 (aOR of 1.80) or 2 vs. 0 (aOR, 4.22).
- Stable cancer vs. remission (aOR, 1.47).
- Progressive cancer vs. remission (aOR, 2.96).
- Non-Hispanic Black vs. White patients (aOR, 1.56).
- Hematologic malignancies vs. solid tumors (aOR, 1.80).
“Importantly, there were some factors that did not reach statistical significance,” Dr. Rini said. These include obesity (aOR, 1.23), recent surgery (aOR, 1.05), receipt of cytotoxic chemotherapy vs. no chemotherapy (aOR, 1.14), and receipt of noncytotoxic chemotherapy vs. no chemotherapy (aOR, 0.75).
“I think this provides some reassurance that cancer care can and should continue for these patients,” Dr. Rini said.
He noted, however, that in TERAVOLT, chemotherapy with or without other treatment was a risk factor for mortality in lung cancer patients when compared with no chemotherapy (OR, 1.71) and when compared with immunotherapy or targeted therapy (OR, 1.64).
NCCAPS and other registries
Dr. Rini discussed a number of registries looking at outcomes in COVID-19 patients with cancer, and he said the findings to date appear to confirm a higher mortality rate among cancer patients, particularly those with lung cancer.
Several factors are emerging that appear to be related to risk, including both cancer-related and non–cancer-related factors, he added.
The ongoing prospective National Cancer Institute COVID-19 in Cancer Patients Study (NCCAPS) “will provide much needed longitudinal data and, importantly, biospecimen collection in a large cohort of patients who have active cancer and are receiving treatment, said Dr. Rini, who is the study’s protocol chair. NCCAPS is a natural history study in that population, he said.
The planned accrual is about 2,000 patients who will be followed for up to 2 years for data collection, imaging scans, and research specimens.
The use of specimens is “a unique and special part of this study,” Dr. Rini said, explaining that the specimens will be used to look for development of antibodies over time, to describe the trajectory of cytokine abnormalities – especially in patients with more acute inpatient courses – to perform DNA-based genome-wide association studies, and to assess coagulation parameters.
NCCAPS is activated at 546 sties, 10 patients were enrolled as of June 21, and rapid accrual is expected over the next several months, he said.
Gypsyamber D’Souza, PhD, session moderator and an infectious disease epidemiologist at Johns Hopkins University in Baltimore, acknowledged the challenge that registry administrators face when trying to balance the need to get data out against the desire to ask the right questions and to have the right comparison groups, stratification, and analyses, especially amid a crisis like the COVID-19 pandemic.
Dr. Rini said it has indeed been a bit of a struggle with CCC19 to determine what information should be published and when, and what constitutes an important update.
“It’s been a learning experience, and frankly, I think we’re still learning,” he said. “This has been such a unique time in terms of a rush to get data out, balanced against making sure that there’s quality data and that you’re actually answering important questions.”
In fact, a number of ongoing registries “should start to produce great data [that will be presented] at upcoming big conferences,” Dr. Rini said. He added that those data “will help piece together different important aspects of this and different hypotheses, and hopefully complement the clinical data that’s starting to come out.”
The CCC19 registry is sponsored by Vanderbilt-Ingram Cancer Center. Dr. Rini disclosed relationships with Pfizer, Merck, Genentech/Roche, Aveo, AstraZeneca, Bristol Myers Squibb, Exelixis, Synthorx, Peloton, Compugen, Corvus, Surface Oncology, 3DMedicines, Aravive, Alkermes, Arrowhead, and PTC Therapeutics. Dr. D’Souza did not disclose any conflicts.
SOURCE: Rini BI. AACR: COVID-19 and Cancer. Abstract IA26.
Initial results from the CCC19 registry were reported as part of the American Society of Clinical Oncology (ASCO) virtual scientific program and published in The Lancet (Lancet. 2020 Jun 20;395[10241]:1907-18).
The latest data were presented at the AACR virtual meeting: COVID-19 and Cancer by Brian I. Rini, MD, of Vanderbilt University, Nashville, Tenn. They were simultaneously published in Cancer Discovery (Cancer Discov. 2020 Jul 22;CD-20-0941).
The CCC19 registry was launched in March by a few institutions as part of “a grassroots idea ... to collect granular data regarding cancer patients and their outcomes with COVID,” Dr. Rini said.
Within a few months of its inception, the registry had partnered with more than 100 institutions worldwide and accrued data from more than 2,000 patients.
The reports in The Lancet and at ASCO included outcomes for the first 928 patients and showed a 13% mortality rate as well as a fivefold increase in the risk of 30-day mortality among patients with COVID-19 and progressing cancer.
The data also showed an increased mortality risk among older patients, men, former smokers, those with poor performance status, those with multiple comorbidities, and those treated with hydroxychloroquine and azithromycin.
The latest data
The CCC19 registry has grown to include 114 sites worldwide, including major comprehensive cancer centers and community sites. As of June 26, there were 2,749 patients enrolled.
Since the last data were reported, the mortality rate increased from 13% to 16% (versus 5% globally). In addition, the increased mortality risk among non-Hispanic black patients and patients with hematologic malignancies reached statistical significance, Dr. Rini said. He noted that the increase in mortality rate was largely attributable to improved follow-up.
Mechanical ventilation was required in 12% of patients, ICU admission was required in 16%, oxygen was required in 45%, and hospitalization was required in 60%. The composite outcome of death, severe illness requiring hospitalization, ICU admission, or mechanical ventilation was reached in 29% of patients, Dr. Rini said.
Mortality rates across cancer types ranged from 3% to 26%, with thyroid and breast cancer patients having the lowest rates (3% and 8%, respectively), and with lymphoma and lung cancer patients having the highest (22% and 26%, respectively), Dr. Rini said.
He noted that the TERAVOLT registry, a COVID-19 registry for patients with thoracic cancers, also showed a very high mortality rate in this subgroup of patients.
Results from TERAVOLT were reported at the AACR virtual meeting I, presented at ASCO, and published in The Lancet (Lancet Oncol. 2020 Jul;21[7]:914-22). The most recent results showed a mortality rate of nearly 36% and reinforce the high mortality rate seen in lung cancer patients in CCC19, Dr. Rini said.
Increased mortality risk
After adjustment for several demographic and disease characteristics, the updated CCC19 data showed a significantly increased risk of mortality among:
- Older patients (adjusted odds ratio [aOR] per decade of age, 1.52).
- Men (aOR, 1.43).
- Current or former smokers vs. never smokers (aOR, 1.28).
- Patients with Eastern Cooperative Oncology Group performance scores of 1 vs. 0 (aOR of 1.80) or 2 vs. 0 (aOR, 4.22).
- Stable cancer vs. remission (aOR, 1.47).
- Progressive cancer vs. remission (aOR, 2.96).
- Non-Hispanic Black vs. White patients (aOR, 1.56).
- Hematologic malignancies vs. solid tumors (aOR, 1.80).
“Importantly, there were some factors that did not reach statistical significance,” Dr. Rini said. These include obesity (aOR, 1.23), recent surgery (aOR, 1.05), receipt of cytotoxic chemotherapy vs. no chemotherapy (aOR, 1.14), and receipt of noncytotoxic chemotherapy vs. no chemotherapy (aOR, 0.75).
“I think this provides some reassurance that cancer care can and should continue for these patients,” Dr. Rini said.
He noted, however, that in TERAVOLT, chemotherapy with or without other treatment was a risk factor for mortality in lung cancer patients when compared with no chemotherapy (OR, 1.71) and when compared with immunotherapy or targeted therapy (OR, 1.64).
NCCAPS and other registries
Dr. Rini discussed a number of registries looking at outcomes in COVID-19 patients with cancer, and he said the findings to date appear to confirm a higher mortality rate among cancer patients, particularly those with lung cancer.
Several factors are emerging that appear to be related to risk, including both cancer-related and non–cancer-related factors, he added.
The ongoing prospective National Cancer Institute COVID-19 in Cancer Patients Study (NCCAPS) “will provide much needed longitudinal data and, importantly, biospecimen collection in a large cohort of patients who have active cancer and are receiving treatment, said Dr. Rini, who is the study’s protocol chair. NCCAPS is a natural history study in that population, he said.
The planned accrual is about 2,000 patients who will be followed for up to 2 years for data collection, imaging scans, and research specimens.
The use of specimens is “a unique and special part of this study,” Dr. Rini said, explaining that the specimens will be used to look for development of antibodies over time, to describe the trajectory of cytokine abnormalities – especially in patients with more acute inpatient courses – to perform DNA-based genome-wide association studies, and to assess coagulation parameters.
NCCAPS is activated at 546 sties, 10 patients were enrolled as of June 21, and rapid accrual is expected over the next several months, he said.
Gypsyamber D’Souza, PhD, session moderator and an infectious disease epidemiologist at Johns Hopkins University in Baltimore, acknowledged the challenge that registry administrators face when trying to balance the need to get data out against the desire to ask the right questions and to have the right comparison groups, stratification, and analyses, especially amid a crisis like the COVID-19 pandemic.
Dr. Rini said it has indeed been a bit of a struggle with CCC19 to determine what information should be published and when, and what constitutes an important update.
“It’s been a learning experience, and frankly, I think we’re still learning,” he said. “This has been such a unique time in terms of a rush to get data out, balanced against making sure that there’s quality data and that you’re actually answering important questions.”
In fact, a number of ongoing registries “should start to produce great data [that will be presented] at upcoming big conferences,” Dr. Rini said. He added that those data “will help piece together different important aspects of this and different hypotheses, and hopefully complement the clinical data that’s starting to come out.”
The CCC19 registry is sponsored by Vanderbilt-Ingram Cancer Center. Dr. Rini disclosed relationships with Pfizer, Merck, Genentech/Roche, Aveo, AstraZeneca, Bristol Myers Squibb, Exelixis, Synthorx, Peloton, Compugen, Corvus, Surface Oncology, 3DMedicines, Aravive, Alkermes, Arrowhead, and PTC Therapeutics. Dr. D’Souza did not disclose any conflicts.
SOURCE: Rini BI. AACR: COVID-19 and Cancer. Abstract IA26.
Initial results from the CCC19 registry were reported as part of the American Society of Clinical Oncology (ASCO) virtual scientific program and published in The Lancet (Lancet. 2020 Jun 20;395[10241]:1907-18).
The latest data were presented at the AACR virtual meeting: COVID-19 and Cancer by Brian I. Rini, MD, of Vanderbilt University, Nashville, Tenn. They were simultaneously published in Cancer Discovery (Cancer Discov. 2020 Jul 22;CD-20-0941).
The CCC19 registry was launched in March by a few institutions as part of “a grassroots idea ... to collect granular data regarding cancer patients and their outcomes with COVID,” Dr. Rini said.
Within a few months of its inception, the registry had partnered with more than 100 institutions worldwide and accrued data from more than 2,000 patients.
The reports in The Lancet and at ASCO included outcomes for the first 928 patients and showed a 13% mortality rate as well as a fivefold increase in the risk of 30-day mortality among patients with COVID-19 and progressing cancer.
The data also showed an increased mortality risk among older patients, men, former smokers, those with poor performance status, those with multiple comorbidities, and those treated with hydroxychloroquine and azithromycin.
The latest data
The CCC19 registry has grown to include 114 sites worldwide, including major comprehensive cancer centers and community sites. As of June 26, there were 2,749 patients enrolled.
Since the last data were reported, the mortality rate increased from 13% to 16% (versus 5% globally). In addition, the increased mortality risk among non-Hispanic black patients and patients with hematologic malignancies reached statistical significance, Dr. Rini said. He noted that the increase in mortality rate was largely attributable to improved follow-up.
Mechanical ventilation was required in 12% of patients, ICU admission was required in 16%, oxygen was required in 45%, and hospitalization was required in 60%. The composite outcome of death, severe illness requiring hospitalization, ICU admission, or mechanical ventilation was reached in 29% of patients, Dr. Rini said.
Mortality rates across cancer types ranged from 3% to 26%, with thyroid and breast cancer patients having the lowest rates (3% and 8%, respectively), and with lymphoma and lung cancer patients having the highest (22% and 26%, respectively), Dr. Rini said.
He noted that the TERAVOLT registry, a COVID-19 registry for patients with thoracic cancers, also showed a very high mortality rate in this subgroup of patients.
Results from TERAVOLT were reported at the AACR virtual meeting I, presented at ASCO, and published in The Lancet (Lancet Oncol. 2020 Jul;21[7]:914-22). The most recent results showed a mortality rate of nearly 36% and reinforce the high mortality rate seen in lung cancer patients in CCC19, Dr. Rini said.
Increased mortality risk
After adjustment for several demographic and disease characteristics, the updated CCC19 data showed a significantly increased risk of mortality among:
- Older patients (adjusted odds ratio [aOR] per decade of age, 1.52).
- Men (aOR, 1.43).
- Current or former smokers vs. never smokers (aOR, 1.28).
- Patients with Eastern Cooperative Oncology Group performance scores of 1 vs. 0 (aOR of 1.80) or 2 vs. 0 (aOR, 4.22).
- Stable cancer vs. remission (aOR, 1.47).
- Progressive cancer vs. remission (aOR, 2.96).
- Non-Hispanic Black vs. White patients (aOR, 1.56).
- Hematologic malignancies vs. solid tumors (aOR, 1.80).
“Importantly, there were some factors that did not reach statistical significance,” Dr. Rini said. These include obesity (aOR, 1.23), recent surgery (aOR, 1.05), receipt of cytotoxic chemotherapy vs. no chemotherapy (aOR, 1.14), and receipt of noncytotoxic chemotherapy vs. no chemotherapy (aOR, 0.75).
“I think this provides some reassurance that cancer care can and should continue for these patients,” Dr. Rini said.
He noted, however, that in TERAVOLT, chemotherapy with or without other treatment was a risk factor for mortality in lung cancer patients when compared with no chemotherapy (OR, 1.71) and when compared with immunotherapy or targeted therapy (OR, 1.64).
NCCAPS and other registries
Dr. Rini discussed a number of registries looking at outcomes in COVID-19 patients with cancer, and he said the findings to date appear to confirm a higher mortality rate among cancer patients, particularly those with lung cancer.
Several factors are emerging that appear to be related to risk, including both cancer-related and non–cancer-related factors, he added.
The ongoing prospective National Cancer Institute COVID-19 in Cancer Patients Study (NCCAPS) “will provide much needed longitudinal data and, importantly, biospecimen collection in a large cohort of patients who have active cancer and are receiving treatment, said Dr. Rini, who is the study’s protocol chair. NCCAPS is a natural history study in that population, he said.
The planned accrual is about 2,000 patients who will be followed for up to 2 years for data collection, imaging scans, and research specimens.
The use of specimens is “a unique and special part of this study,” Dr. Rini said, explaining that the specimens will be used to look for development of antibodies over time, to describe the trajectory of cytokine abnormalities – especially in patients with more acute inpatient courses – to perform DNA-based genome-wide association studies, and to assess coagulation parameters.
NCCAPS is activated at 546 sties, 10 patients were enrolled as of June 21, and rapid accrual is expected over the next several months, he said.
Gypsyamber D’Souza, PhD, session moderator and an infectious disease epidemiologist at Johns Hopkins University in Baltimore, acknowledged the challenge that registry administrators face when trying to balance the need to get data out against the desire to ask the right questions and to have the right comparison groups, stratification, and analyses, especially amid a crisis like the COVID-19 pandemic.
Dr. Rini said it has indeed been a bit of a struggle with CCC19 to determine what information should be published and when, and what constitutes an important update.
“It’s been a learning experience, and frankly, I think we’re still learning,” he said. “This has been such a unique time in terms of a rush to get data out, balanced against making sure that there’s quality data and that you’re actually answering important questions.”
In fact, a number of ongoing registries “should start to produce great data [that will be presented] at upcoming big conferences,” Dr. Rini said. He added that those data “will help piece together different important aspects of this and different hypotheses, and hopefully complement the clinical data that’s starting to come out.”
The CCC19 registry is sponsored by Vanderbilt-Ingram Cancer Center. Dr. Rini disclosed relationships with Pfizer, Merck, Genentech/Roche, Aveo, AstraZeneca, Bristol Myers Squibb, Exelixis, Synthorx, Peloton, Compugen, Corvus, Surface Oncology, 3DMedicines, Aravive, Alkermes, Arrowhead, and PTC Therapeutics. Dr. D’Souza did not disclose any conflicts.
SOURCE: Rini BI. AACR: COVID-19 and Cancer. Abstract IA26.
FROM AACR: COVID-19 and CANCER
SPK-8011 AAV-mediated hemophilia A therapy shows stability, durability
SPK-8011, an investigational adeno-associated virus (AAV)–mediated gene therapy for hemophilia A, provides stable and durable factor VIII expression with no major safety concerns, according to findings at least 2 years after a single treatment in patients from a phase 1/2 trial.
The first 5 of 14 adult men with hemophilia A and who had factor VIII (FVIII) activity of 2% or less before treatment with SPK-8011 (at single doses of either 5 × 1011 or 1 × 1012 vg/kg), showed no development of FVIII inhibitors or evidence of FVIII cellular immune response at 106-142 weeks’ follow-up after vector infusion, according to Lindsey A. George, MD, at the International Society of Thrombosis and Haemostasis 2020 virtual congress.
At follow-up, the two who had received a 5 × 1011 vg/kg dose had FVIII activity of 6.9%-8.4%, and the three in the 1 × 1012 vg/kg cohort had FVIII activity of 5.2%-19.8%, said Dr. George, of the Children’s Hospital of Philadelphia.
Overall, 12 of the 14 patients in the study had sustained FVIII expression, including 7 of 9 who received the highest SPK-8011 dose of 2 × 1012 vg/kg. In the 12 with sustained expression, a “remarkable” 91% reduction in the annualized bleeding rate from the year prior to vs. the year after vector infusion was observed, she said.
“Similarly, looking at number of factor infusions before vector infusion relative to the number of factor infusions after vector infusion ... [there was] evidence of remarkable preliminary efficacy,” she added, noting a 96% reduction in factor consumption.
The findings are of note because, while clinical studies of Spark Therapeutic’s SPK-8011 product in hemophilia B and preclinical models in hemophilia A showed promising reductions in bleeds and stable, durable levels of FVIII expression after therapy, the first successful clinical trial of an AAV-mediated gene therapy in hemophilia A – the BioMarin AAV serotype 5 human FVIII-SQ (valoctocogene roxaparvovec) – showed an unexpected decline in FVIII expression at 1, 2, 3, and 4 years.
“This may be particularly relevant in the context of development of multi-serotype AAV neutralizing antibodies (NAb) following AAV vector administration,” Dr. George said, referencing a small study in which she and her colleagues showed long-term persistence of cross-reactive AAV NAb. The findings of that study, which is currently in press in Molecular Therapy, “suggest that repeat AAV vector infusion is unlikely to be possible with current methods.”
Initial results from the SPK-8011 study were presented at the 2018 American Society of Hematology annual meeting. No major safety issues have emerged since those data were presented at ASH; no deaths have occurred, and none of the patients developed FVIII inhibitors.
Treatment-related adverse events were limited to an infusion reaction in one patient, which resolved completely, and liver enzyme elevations in three patients, which also resolved. One serious adverse event – a grade 2 transaminitis that resulted in elective hospitalization for intravenous steroid administration, also resolved.
With respect to vector clearance, there was “no evidence of vector in either saliva, semen, serum, urine, or peripheral blood mononuclear cells by 6 weeks after vector infusion,” Dr. George said.
One-stage assay determination of FVIII activity showed that activity greater than 10% permits an absolute bleeding rate (ABR) of less than 1%, which is consistent with hemophilia natural history studies. Therefore “these data support that FVIII activity that is approximately greater than 10% “may be adequate to either eliminate or achieve an ABR of less than 1,” she said.
“With respect to assay discrepancy, our data at least preliminarily support that the one-stage assay determinant of hepatocyte-derived FVIII correlates with clinical phenotype,” she added.
The findings in the first five patients demonstrate preliminary stability of FVIII expression at follow up between 2 and 3.3 years, she said.
Further, of the nine patients who received the 2 × 1012 vg/kg dose, seven had sustained FVIII expression at about 1.5 years, five of the seven had no bleeds, and two lost FVIII expression and returned to prophylaxis uneventfully, she noted.
“The future directions of this work are ultimately to explore the optimal vector dose and immunosuppression regimens to achieve predictable, safe, efficacious, and durable FVIII expression,” she said.
Asked during a question and answer period about potential reasons for the differences in durability seen with SBK-8011 versus valoctocogene roxaparvovec, Dr. George said they remain unclear but could be related to differences in vector doses and manufacturing platforms.
Emerging data may allow for better comparisons, she added.
Session moderator Sebastien Lacroix-Desmazes, MD, of Centre de Recherche des Cordeliers, Paris, further asked about plans to optimize the immunosuppression regimen.
Plans are indeed in the works to identify the optimal immunosuppression regimen and to optimize immunosuppression in this trial, Dr. George said, noting that Spark Therapeutics “has outlined a plan to further investigate this in phase 1/2 trial before progressing into phase 3 study.”
Spark Therapeutic sponsored the SPK-8011 study. Dr. George disclosed consulting and/or data safety monitoring board activity for Pfizer and AvroBio.
SOURCE: George L et al. 2020 ISTH Congress, Abstract OC 03.5.
SPK-8011, an investigational adeno-associated virus (AAV)–mediated gene therapy for hemophilia A, provides stable and durable factor VIII expression with no major safety concerns, according to findings at least 2 years after a single treatment in patients from a phase 1/2 trial.
The first 5 of 14 adult men with hemophilia A and who had factor VIII (FVIII) activity of 2% or less before treatment with SPK-8011 (at single doses of either 5 × 1011 or 1 × 1012 vg/kg), showed no development of FVIII inhibitors or evidence of FVIII cellular immune response at 106-142 weeks’ follow-up after vector infusion, according to Lindsey A. George, MD, at the International Society of Thrombosis and Haemostasis 2020 virtual congress.
At follow-up, the two who had received a 5 × 1011 vg/kg dose had FVIII activity of 6.9%-8.4%, and the three in the 1 × 1012 vg/kg cohort had FVIII activity of 5.2%-19.8%, said Dr. George, of the Children’s Hospital of Philadelphia.
Overall, 12 of the 14 patients in the study had sustained FVIII expression, including 7 of 9 who received the highest SPK-8011 dose of 2 × 1012 vg/kg. In the 12 with sustained expression, a “remarkable” 91% reduction in the annualized bleeding rate from the year prior to vs. the year after vector infusion was observed, she said.
“Similarly, looking at number of factor infusions before vector infusion relative to the number of factor infusions after vector infusion ... [there was] evidence of remarkable preliminary efficacy,” she added, noting a 96% reduction in factor consumption.
The findings are of note because, while clinical studies of Spark Therapeutic’s SPK-8011 product in hemophilia B and preclinical models in hemophilia A showed promising reductions in bleeds and stable, durable levels of FVIII expression after therapy, the first successful clinical trial of an AAV-mediated gene therapy in hemophilia A – the BioMarin AAV serotype 5 human FVIII-SQ (valoctocogene roxaparvovec) – showed an unexpected decline in FVIII expression at 1, 2, 3, and 4 years.
“This may be particularly relevant in the context of development of multi-serotype AAV neutralizing antibodies (NAb) following AAV vector administration,” Dr. George said, referencing a small study in which she and her colleagues showed long-term persistence of cross-reactive AAV NAb. The findings of that study, which is currently in press in Molecular Therapy, “suggest that repeat AAV vector infusion is unlikely to be possible with current methods.”
Initial results from the SPK-8011 study were presented at the 2018 American Society of Hematology annual meeting. No major safety issues have emerged since those data were presented at ASH; no deaths have occurred, and none of the patients developed FVIII inhibitors.
Treatment-related adverse events were limited to an infusion reaction in one patient, which resolved completely, and liver enzyme elevations in three patients, which also resolved. One serious adverse event – a grade 2 transaminitis that resulted in elective hospitalization for intravenous steroid administration, also resolved.
With respect to vector clearance, there was “no evidence of vector in either saliva, semen, serum, urine, or peripheral blood mononuclear cells by 6 weeks after vector infusion,” Dr. George said.
One-stage assay determination of FVIII activity showed that activity greater than 10% permits an absolute bleeding rate (ABR) of less than 1%, which is consistent with hemophilia natural history studies. Therefore “these data support that FVIII activity that is approximately greater than 10% “may be adequate to either eliminate or achieve an ABR of less than 1,” she said.
“With respect to assay discrepancy, our data at least preliminarily support that the one-stage assay determinant of hepatocyte-derived FVIII correlates with clinical phenotype,” she added.
The findings in the first five patients demonstrate preliminary stability of FVIII expression at follow up between 2 and 3.3 years, she said.
Further, of the nine patients who received the 2 × 1012 vg/kg dose, seven had sustained FVIII expression at about 1.5 years, five of the seven had no bleeds, and two lost FVIII expression and returned to prophylaxis uneventfully, she noted.
“The future directions of this work are ultimately to explore the optimal vector dose and immunosuppression regimens to achieve predictable, safe, efficacious, and durable FVIII expression,” she said.
Asked during a question and answer period about potential reasons for the differences in durability seen with SBK-8011 versus valoctocogene roxaparvovec, Dr. George said they remain unclear but could be related to differences in vector doses and manufacturing platforms.
Emerging data may allow for better comparisons, she added.
Session moderator Sebastien Lacroix-Desmazes, MD, of Centre de Recherche des Cordeliers, Paris, further asked about plans to optimize the immunosuppression regimen.
Plans are indeed in the works to identify the optimal immunosuppression regimen and to optimize immunosuppression in this trial, Dr. George said, noting that Spark Therapeutics “has outlined a plan to further investigate this in phase 1/2 trial before progressing into phase 3 study.”
Spark Therapeutic sponsored the SPK-8011 study. Dr. George disclosed consulting and/or data safety monitoring board activity for Pfizer and AvroBio.
SOURCE: George L et al. 2020 ISTH Congress, Abstract OC 03.5.
SPK-8011, an investigational adeno-associated virus (AAV)–mediated gene therapy for hemophilia A, provides stable and durable factor VIII expression with no major safety concerns, according to findings at least 2 years after a single treatment in patients from a phase 1/2 trial.
The first 5 of 14 adult men with hemophilia A and who had factor VIII (FVIII) activity of 2% or less before treatment with SPK-8011 (at single doses of either 5 × 1011 or 1 × 1012 vg/kg), showed no development of FVIII inhibitors or evidence of FVIII cellular immune response at 106-142 weeks’ follow-up after vector infusion, according to Lindsey A. George, MD, at the International Society of Thrombosis and Haemostasis 2020 virtual congress.
At follow-up, the two who had received a 5 × 1011 vg/kg dose had FVIII activity of 6.9%-8.4%, and the three in the 1 × 1012 vg/kg cohort had FVIII activity of 5.2%-19.8%, said Dr. George, of the Children’s Hospital of Philadelphia.
Overall, 12 of the 14 patients in the study had sustained FVIII expression, including 7 of 9 who received the highest SPK-8011 dose of 2 × 1012 vg/kg. In the 12 with sustained expression, a “remarkable” 91% reduction in the annualized bleeding rate from the year prior to vs. the year after vector infusion was observed, she said.
“Similarly, looking at number of factor infusions before vector infusion relative to the number of factor infusions after vector infusion ... [there was] evidence of remarkable preliminary efficacy,” she added, noting a 96% reduction in factor consumption.
The findings are of note because, while clinical studies of Spark Therapeutic’s SPK-8011 product in hemophilia B and preclinical models in hemophilia A showed promising reductions in bleeds and stable, durable levels of FVIII expression after therapy, the first successful clinical trial of an AAV-mediated gene therapy in hemophilia A – the BioMarin AAV serotype 5 human FVIII-SQ (valoctocogene roxaparvovec) – showed an unexpected decline in FVIII expression at 1, 2, 3, and 4 years.
“This may be particularly relevant in the context of development of multi-serotype AAV neutralizing antibodies (NAb) following AAV vector administration,” Dr. George said, referencing a small study in which she and her colleagues showed long-term persistence of cross-reactive AAV NAb. The findings of that study, which is currently in press in Molecular Therapy, “suggest that repeat AAV vector infusion is unlikely to be possible with current methods.”
Initial results from the SPK-8011 study were presented at the 2018 American Society of Hematology annual meeting. No major safety issues have emerged since those data were presented at ASH; no deaths have occurred, and none of the patients developed FVIII inhibitors.
Treatment-related adverse events were limited to an infusion reaction in one patient, which resolved completely, and liver enzyme elevations in three patients, which also resolved. One serious adverse event – a grade 2 transaminitis that resulted in elective hospitalization for intravenous steroid administration, also resolved.
With respect to vector clearance, there was “no evidence of vector in either saliva, semen, serum, urine, or peripheral blood mononuclear cells by 6 weeks after vector infusion,” Dr. George said.
One-stage assay determination of FVIII activity showed that activity greater than 10% permits an absolute bleeding rate (ABR) of less than 1%, which is consistent with hemophilia natural history studies. Therefore “these data support that FVIII activity that is approximately greater than 10% “may be adequate to either eliminate or achieve an ABR of less than 1,” she said.
“With respect to assay discrepancy, our data at least preliminarily support that the one-stage assay determinant of hepatocyte-derived FVIII correlates with clinical phenotype,” she added.
The findings in the first five patients demonstrate preliminary stability of FVIII expression at follow up between 2 and 3.3 years, she said.
Further, of the nine patients who received the 2 × 1012 vg/kg dose, seven had sustained FVIII expression at about 1.5 years, five of the seven had no bleeds, and two lost FVIII expression and returned to prophylaxis uneventfully, she noted.
“The future directions of this work are ultimately to explore the optimal vector dose and immunosuppression regimens to achieve predictable, safe, efficacious, and durable FVIII expression,” she said.
Asked during a question and answer period about potential reasons for the differences in durability seen with SBK-8011 versus valoctocogene roxaparvovec, Dr. George said they remain unclear but could be related to differences in vector doses and manufacturing platforms.
Emerging data may allow for better comparisons, she added.
Session moderator Sebastien Lacroix-Desmazes, MD, of Centre de Recherche des Cordeliers, Paris, further asked about plans to optimize the immunosuppression regimen.
Plans are indeed in the works to identify the optimal immunosuppression regimen and to optimize immunosuppression in this trial, Dr. George said, noting that Spark Therapeutics “has outlined a plan to further investigate this in phase 1/2 trial before progressing into phase 3 study.”
Spark Therapeutic sponsored the SPK-8011 study. Dr. George disclosed consulting and/or data safety monitoring board activity for Pfizer and AvroBio.
SOURCE: George L et al. 2020 ISTH Congress, Abstract OC 03.5.
FROM THE 2020 ISTH CONGRESS