User login
Reliably solving complex problems
The James Webb Space Telescope (JWST) is an engineering marvel. Costing over $10 billion, it should be. The project cost overrun was 900%. The launch was delayed by more than a decade. The Human Genome Project from 1990 to 2003 was completed slightly ahead of schedule and for less than the $4-$5 billion original estimates. This HGP success story is partly because of private entrepreneurial involvement. The Superconducting Super Collider in Texas spent $2 billion but never got off the ground. Successfully shepherding huge public projects like these involves the art of politics and management as well as science.
Whatever the earlier missteps, the JWST project is now performing above expectations. It has launched, taken up residence a million miles from Earth, deployed its mirrors (a process that had more than 300 possible single points of failure, any one of which would reduce the thing to scrap metal), and been calibrated. The JWST has even been dented by a micrometeoroid – sort of like a parking lot ding on the door of your brand new car. The first images are visually amazing and producing new scientific insights. This is a pinnacle of scientific achievement.
What characteristics enable such an achievement? How do we foster those same characteristics in the practice of medicine and medical research? Will the success of the JWST increase and restore the public’s trust in science and scientists?
After all the bickering over vaccines and masks for the past 2+ years, medical science could use a boost. The gravitas of scientists, and indeed all experts, has diminished over the 5 decades since humans walked on the moon. It has been harmed by mercenary scientists who sought to sow doubt about whether smoking caused cancer and whether fossil fuels created climate change. No proof was needed, just doubt.
The trust in science has also been harmed by the vast amount of published medical research that is wrong. An effort was made 20 years ago to rid research of the bias of taking money from drug companies. To my observation, that change produced only a small benefit that has been overwhelmed by the unintended harms. The large, well-funded academic labs of full-time researchers have been replaced with unfunded, undertrained, and inadequately supported part-time junior faculty trying to publish enough articles to be promoted. In my opinion, this change is worse than funding from Big Pharma. (Disclosure – I worked in industry prior to graduate school.)
The pressure to publish reduces skepticism, so more incorrect data are published. The small size of these amateur studies produces unconvincing conclusions that feed an industry of meta-analysis that tries to overcome the deficiencies of the individual studies. This fragmented, biased approach is not how you build, launch, deploy, and operate the JWST, which requires very high reliability.
This approach is not working well for pediatrics either. I look at the history of the recommended workup of the febrile young infant from the 1980s until today. I see constant changes to the guidelines but no real progress toward a validated, evidence-based approach. A similar history is behind treatment of neonatal hyperbilirubinemia. In the 1994 publication, there was a movement toward being less aggressive. The 2004 and 2009 editions increased the frequency of screening and phototherapy. Now, the 2022 guidelines have moved in the direction we were headed in the 1990s. The workup of infants and children with possible urinary tract infections has undergone a similar trajectory. So has the screening for neonatal herpes infections. The practice changes are more like Brownian motion than real progress. This inconsistency has led me to be skeptical of the process the American Academy of Pediatrics uses to create guidelines.
Part of solving complex problems is allowing all stakeholders’ voices to be heard. On Jan. 28, 1986, seconds after liftoff, the space shuttle Challenger exploded. In the aftermath, it was determined that some engineers had expressed concern about the very cold weather that morning. The rubber in the O-ring would not be as flexible as designed. Their objection was not listened to. The O-ring failed, the fuel tank exploded, and the ship and crew were lost. It is a lesson many engineers of my generation took to heart. Do not suppress voices.
For example, 1 year ago (September 2021), the Royal Australian and New Zealand College of Psychiatrists published a position statement, “Recognising and addressing the mental health needs of people experiencing gender dysphoria/gender incongruence.” The statement expressed concern about the marked increase in incidence of rapid-onset gender dysphoria and therefore urged more thorough assessment by psychiatry before embarking on puberty-blocking therapies. The RANZCP position is at variance with recent trends in the United States. The topic was censored at the 2021 AAP national conference. Lately, I have heard the words disinformation and homophobic used to describe my RANZCP colleagues. I have been comparing AAP, Britain’s National Institute for Health and Care Excellence, and Royal Children’s Hospital Melbourne guidelines for 20 years. The variation is enlightening. I do not know the correct answer to treating gender dysphoria, but I know suppressing viewpoints and debate leads to exploding spaceships.
Dr. Powell is a retired pediatric hospitalist and clinical ethics consultant living in St. Louis. Email him at [email protected].
The James Webb Space Telescope (JWST) is an engineering marvel. Costing over $10 billion, it should be. The project cost overrun was 900%. The launch was delayed by more than a decade. The Human Genome Project from 1990 to 2003 was completed slightly ahead of schedule and for less than the $4-$5 billion original estimates. This HGP success story is partly because of private entrepreneurial involvement. The Superconducting Super Collider in Texas spent $2 billion but never got off the ground. Successfully shepherding huge public projects like these involves the art of politics and management as well as science.
Whatever the earlier missteps, the JWST project is now performing above expectations. It has launched, taken up residence a million miles from Earth, deployed its mirrors (a process that had more than 300 possible single points of failure, any one of which would reduce the thing to scrap metal), and been calibrated. The JWST has even been dented by a micrometeoroid – sort of like a parking lot ding on the door of your brand new car. The first images are visually amazing and producing new scientific insights. This is a pinnacle of scientific achievement.
What characteristics enable such an achievement? How do we foster those same characteristics in the practice of medicine and medical research? Will the success of the JWST increase and restore the public’s trust in science and scientists?
After all the bickering over vaccines and masks for the past 2+ years, medical science could use a boost. The gravitas of scientists, and indeed all experts, has diminished over the 5 decades since humans walked on the moon. It has been harmed by mercenary scientists who sought to sow doubt about whether smoking caused cancer and whether fossil fuels created climate change. No proof was needed, just doubt.
The trust in science has also been harmed by the vast amount of published medical research that is wrong. An effort was made 20 years ago to rid research of the bias of taking money from drug companies. To my observation, that change produced only a small benefit that has been overwhelmed by the unintended harms. The large, well-funded academic labs of full-time researchers have been replaced with unfunded, undertrained, and inadequately supported part-time junior faculty trying to publish enough articles to be promoted. In my opinion, this change is worse than funding from Big Pharma. (Disclosure – I worked in industry prior to graduate school.)
The pressure to publish reduces skepticism, so more incorrect data are published. The small size of these amateur studies produces unconvincing conclusions that feed an industry of meta-analysis that tries to overcome the deficiencies of the individual studies. This fragmented, biased approach is not how you build, launch, deploy, and operate the JWST, which requires very high reliability.
This approach is not working well for pediatrics either. I look at the history of the recommended workup of the febrile young infant from the 1980s until today. I see constant changes to the guidelines but no real progress toward a validated, evidence-based approach. A similar history is behind treatment of neonatal hyperbilirubinemia. In the 1994 publication, there was a movement toward being less aggressive. The 2004 and 2009 editions increased the frequency of screening and phototherapy. Now, the 2022 guidelines have moved in the direction we were headed in the 1990s. The workup of infants and children with possible urinary tract infections has undergone a similar trajectory. So has the screening for neonatal herpes infections. The practice changes are more like Brownian motion than real progress. This inconsistency has led me to be skeptical of the process the American Academy of Pediatrics uses to create guidelines.
Part of solving complex problems is allowing all stakeholders’ voices to be heard. On Jan. 28, 1986, seconds after liftoff, the space shuttle Challenger exploded. In the aftermath, it was determined that some engineers had expressed concern about the very cold weather that morning. The rubber in the O-ring would not be as flexible as designed. Their objection was not listened to. The O-ring failed, the fuel tank exploded, and the ship and crew were lost. It is a lesson many engineers of my generation took to heart. Do not suppress voices.
For example, 1 year ago (September 2021), the Royal Australian and New Zealand College of Psychiatrists published a position statement, “Recognising and addressing the mental health needs of people experiencing gender dysphoria/gender incongruence.” The statement expressed concern about the marked increase in incidence of rapid-onset gender dysphoria and therefore urged more thorough assessment by psychiatry before embarking on puberty-blocking therapies. The RANZCP position is at variance with recent trends in the United States. The topic was censored at the 2021 AAP national conference. Lately, I have heard the words disinformation and homophobic used to describe my RANZCP colleagues. I have been comparing AAP, Britain’s National Institute for Health and Care Excellence, and Royal Children’s Hospital Melbourne guidelines for 20 years. The variation is enlightening. I do not know the correct answer to treating gender dysphoria, but I know suppressing viewpoints and debate leads to exploding spaceships.
Dr. Powell is a retired pediatric hospitalist and clinical ethics consultant living in St. Louis. Email him at [email protected].
The James Webb Space Telescope (JWST) is an engineering marvel. Costing over $10 billion, it should be. The project cost overrun was 900%. The launch was delayed by more than a decade. The Human Genome Project from 1990 to 2003 was completed slightly ahead of schedule and for less than the $4-$5 billion original estimates. This HGP success story is partly because of private entrepreneurial involvement. The Superconducting Super Collider in Texas spent $2 billion but never got off the ground. Successfully shepherding huge public projects like these involves the art of politics and management as well as science.
Whatever the earlier missteps, the JWST project is now performing above expectations. It has launched, taken up residence a million miles from Earth, deployed its mirrors (a process that had more than 300 possible single points of failure, any one of which would reduce the thing to scrap metal), and been calibrated. The JWST has even been dented by a micrometeoroid – sort of like a parking lot ding on the door of your brand new car. The first images are visually amazing and producing new scientific insights. This is a pinnacle of scientific achievement.
What characteristics enable such an achievement? How do we foster those same characteristics in the practice of medicine and medical research? Will the success of the JWST increase and restore the public’s trust in science and scientists?
After all the bickering over vaccines and masks for the past 2+ years, medical science could use a boost. The gravitas of scientists, and indeed all experts, has diminished over the 5 decades since humans walked on the moon. It has been harmed by mercenary scientists who sought to sow doubt about whether smoking caused cancer and whether fossil fuels created climate change. No proof was needed, just doubt.
The trust in science has also been harmed by the vast amount of published medical research that is wrong. An effort was made 20 years ago to rid research of the bias of taking money from drug companies. To my observation, that change produced only a small benefit that has been overwhelmed by the unintended harms. The large, well-funded academic labs of full-time researchers have been replaced with unfunded, undertrained, and inadequately supported part-time junior faculty trying to publish enough articles to be promoted. In my opinion, this change is worse than funding from Big Pharma. (Disclosure – I worked in industry prior to graduate school.)
The pressure to publish reduces skepticism, so more incorrect data are published. The small size of these amateur studies produces unconvincing conclusions that feed an industry of meta-analysis that tries to overcome the deficiencies of the individual studies. This fragmented, biased approach is not how you build, launch, deploy, and operate the JWST, which requires very high reliability.
This approach is not working well for pediatrics either. I look at the history of the recommended workup of the febrile young infant from the 1980s until today. I see constant changes to the guidelines but no real progress toward a validated, evidence-based approach. A similar history is behind treatment of neonatal hyperbilirubinemia. In the 1994 publication, there was a movement toward being less aggressive. The 2004 and 2009 editions increased the frequency of screening and phototherapy. Now, the 2022 guidelines have moved in the direction we were headed in the 1990s. The workup of infants and children with possible urinary tract infections has undergone a similar trajectory. So has the screening for neonatal herpes infections. The practice changes are more like Brownian motion than real progress. This inconsistency has led me to be skeptical of the process the American Academy of Pediatrics uses to create guidelines.
Part of solving complex problems is allowing all stakeholders’ voices to be heard. On Jan. 28, 1986, seconds after liftoff, the space shuttle Challenger exploded. In the aftermath, it was determined that some engineers had expressed concern about the very cold weather that morning. The rubber in the O-ring would not be as flexible as designed. Their objection was not listened to. The O-ring failed, the fuel tank exploded, and the ship and crew were lost. It is a lesson many engineers of my generation took to heart. Do not suppress voices.
For example, 1 year ago (September 2021), the Royal Australian and New Zealand College of Psychiatrists published a position statement, “Recognising and addressing the mental health needs of people experiencing gender dysphoria/gender incongruence.” The statement expressed concern about the marked increase in incidence of rapid-onset gender dysphoria and therefore urged more thorough assessment by psychiatry before embarking on puberty-blocking therapies. The RANZCP position is at variance with recent trends in the United States. The topic was censored at the 2021 AAP national conference. Lately, I have heard the words disinformation and homophobic used to describe my RANZCP colleagues. I have been comparing AAP, Britain’s National Institute for Health and Care Excellence, and Royal Children’s Hospital Melbourne guidelines for 20 years. The variation is enlightening. I do not know the correct answer to treating gender dysphoria, but I know suppressing viewpoints and debate leads to exploding spaceships.
Dr. Powell is a retired pediatric hospitalist and clinical ethics consultant living in St. Louis. Email him at [email protected].
FDA approves first gene therapy, betibeglogene autotemcel (Zynteglo), for beta-thalassemia
Betibeglogene autotemcel, a one-time gene therapy, represents a potential cure in which functional copies of the mutated gene are inserted into patients’ hematopoietic stem cells via a replication-defective lentivirus.
“Today’s approval is an important advance in the treatment of beta-thalassemia, particularly in individuals who require ongoing red blood cell transfusions,” Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research, said in an FDA press release. “Given the potential health complications associated with this serious disease, this action highlights the FDA’s continued commitment to supporting development of innovative therapies for patients who have limited treatment options.”
The approval was based on phase 3 trials, in which 89% of 41 patients aged 4-34 years who received the therapy maintained normal or near-normal hemoglobin levels and didn’t need transfusions for at least a year. The patients were as young as age 4, maker Bluebird Bio said in a press release.
FDA’s Cellular, Tissue, and Gene Therapies Advisory Committee unanimously recommended approval in June. The gene therapy had been approved in Europe, where it carried a price tag of about $1.8 million, but Bluebird pulled it from the market in 2021 because of problems with reimbursement.
“The decision to discontinue operations in Europe resulted from prolonged negotiations with European payers and challenges to achieving appropriate value recognition and market access,” the company said in a Securities and Exchange Commission filing.
The projected price in the United States is even higher: $2.1 million.
But the Institute for Clinical and Economic Review, an influential Boston-based nonprofit organization that specializes in medical cost-effectiveness analyses, concluded in June that, “given the high annual costs of standard care ... this new treatment meets commonly accepted value thresholds at an anticipated price of $2.1 million,” particularly with Bluebird’s proposal to pay back 80% of the cost if patients need a transfusion within 5 years.
The company is planning an October 2022 launch and estimates the U.S. market for betibeglogene autotemcel to be about 1,500 patients.
Adverse events in studies were “infrequent and consisted primarily of nonserious infusion-related reactions,” such as abdominal pain, hot flush, dyspnea, tachycardia, noncardiac chest pain, and cytopenias, including thrombocytopenia, leukopenia, and neutropenia. One case of thrombocytopenia was considered serious but resolved, according to the company.
Most of the serious adverse events were related to hematopoietic stem cell collection and the busulfan conditioning regimen. Insertional oncogenesis and/or cancer have been reported with Bluebird’s other gene therapy products, but no cases have been associated with betibeglogene autotemcel.
A version of this article first appeared on Medscape.com.
Betibeglogene autotemcel, a one-time gene therapy, represents a potential cure in which functional copies of the mutated gene are inserted into patients’ hematopoietic stem cells via a replication-defective lentivirus.
“Today’s approval is an important advance in the treatment of beta-thalassemia, particularly in individuals who require ongoing red blood cell transfusions,” Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research, said in an FDA press release. “Given the potential health complications associated with this serious disease, this action highlights the FDA’s continued commitment to supporting development of innovative therapies for patients who have limited treatment options.”
The approval was based on phase 3 trials, in which 89% of 41 patients aged 4-34 years who received the therapy maintained normal or near-normal hemoglobin levels and didn’t need transfusions for at least a year. The patients were as young as age 4, maker Bluebird Bio said in a press release.
FDA’s Cellular, Tissue, and Gene Therapies Advisory Committee unanimously recommended approval in June. The gene therapy had been approved in Europe, where it carried a price tag of about $1.8 million, but Bluebird pulled it from the market in 2021 because of problems with reimbursement.
“The decision to discontinue operations in Europe resulted from prolonged negotiations with European payers and challenges to achieving appropriate value recognition and market access,” the company said in a Securities and Exchange Commission filing.
The projected price in the United States is even higher: $2.1 million.
But the Institute for Clinical and Economic Review, an influential Boston-based nonprofit organization that specializes in medical cost-effectiveness analyses, concluded in June that, “given the high annual costs of standard care ... this new treatment meets commonly accepted value thresholds at an anticipated price of $2.1 million,” particularly with Bluebird’s proposal to pay back 80% of the cost if patients need a transfusion within 5 years.
The company is planning an October 2022 launch and estimates the U.S. market for betibeglogene autotemcel to be about 1,500 patients.
Adverse events in studies were “infrequent and consisted primarily of nonserious infusion-related reactions,” such as abdominal pain, hot flush, dyspnea, tachycardia, noncardiac chest pain, and cytopenias, including thrombocytopenia, leukopenia, and neutropenia. One case of thrombocytopenia was considered serious but resolved, according to the company.
Most of the serious adverse events were related to hematopoietic stem cell collection and the busulfan conditioning regimen. Insertional oncogenesis and/or cancer have been reported with Bluebird’s other gene therapy products, but no cases have been associated with betibeglogene autotemcel.
A version of this article first appeared on Medscape.com.
Betibeglogene autotemcel, a one-time gene therapy, represents a potential cure in which functional copies of the mutated gene are inserted into patients’ hematopoietic stem cells via a replication-defective lentivirus.
“Today’s approval is an important advance in the treatment of beta-thalassemia, particularly in individuals who require ongoing red blood cell transfusions,” Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research, said in an FDA press release. “Given the potential health complications associated with this serious disease, this action highlights the FDA’s continued commitment to supporting development of innovative therapies for patients who have limited treatment options.”
The approval was based on phase 3 trials, in which 89% of 41 patients aged 4-34 years who received the therapy maintained normal or near-normal hemoglobin levels and didn’t need transfusions for at least a year. The patients were as young as age 4, maker Bluebird Bio said in a press release.
FDA’s Cellular, Tissue, and Gene Therapies Advisory Committee unanimously recommended approval in June. The gene therapy had been approved in Europe, where it carried a price tag of about $1.8 million, but Bluebird pulled it from the market in 2021 because of problems with reimbursement.
“The decision to discontinue operations in Europe resulted from prolonged negotiations with European payers and challenges to achieving appropriate value recognition and market access,” the company said in a Securities and Exchange Commission filing.
The projected price in the United States is even higher: $2.1 million.
But the Institute for Clinical and Economic Review, an influential Boston-based nonprofit organization that specializes in medical cost-effectiveness analyses, concluded in June that, “given the high annual costs of standard care ... this new treatment meets commonly accepted value thresholds at an anticipated price of $2.1 million,” particularly with Bluebird’s proposal to pay back 80% of the cost if patients need a transfusion within 5 years.
The company is planning an October 2022 launch and estimates the U.S. market for betibeglogene autotemcel to be about 1,500 patients.
Adverse events in studies were “infrequent and consisted primarily of nonserious infusion-related reactions,” such as abdominal pain, hot flush, dyspnea, tachycardia, noncardiac chest pain, and cytopenias, including thrombocytopenia, leukopenia, and neutropenia. One case of thrombocytopenia was considered serious but resolved, according to the company.
Most of the serious adverse events were related to hematopoietic stem cell collection and the busulfan conditioning regimen. Insertional oncogenesis and/or cancer have been reported with Bluebird’s other gene therapy products, but no cases have been associated with betibeglogene autotemcel.
A version of this article first appeared on Medscape.com.
FDA approves adalimumab-bwwd biosimilar (Hadlima) in high-concentration form
The U.S. Food and Drug Administration today approved a citrate-free, high-concentration formulation of adalimumab-bwwd (Hadlima), the manufacturer, Samsung Bioepis, and its commercialization partner Organon said in an announcement.
Hadlima is a biosimilar of the tumor necrosis factor inhibitor reference product adalimumab (Humira).
Hadlima was first approved in July 2019 in a citrated, 50-mg/mL formulation. The new citrate-free, 100-mg/mL version will be available in prefilled syringe and autoinjector options.
The 100-mg/mL formulation is indicated for the same seven conditions as its 50-mg/mL counterpart: rheumatoid arthritis, polyarticular juvenile idiopathic arthritis, plaque psoriasis, psoriatic arthritis, ankylosing spondylitis, adult and pediatric Crohn’s disease, and ulcerative colitis.
The approval was based on clinical data from a randomized, single-blind, two-arm, parallel group, single-dose study that compared the pharmacokinetics, safety, tolerability, and immunogenicity of the 100-mg/mL and 50-mg/mL formulations of Hadlima in healthy volunteers.
Both low- and high-concentration formulations of Humira are currently marketed in the United States. Organon said that it expects to market Hadlima in the United States on or after July 1, 2023, in accordance with a licensing agreement with AbbVie.
The prescribing information for Hadlima includes specific warnings and areas of concern. The drug should not be administered to individuals who are known to be hypersensitive to adalimumab. The drug may lower the ability of the immune system to fight infections and may increase risk of infections, including serious infections leading to hospitalization or death, such as tuberculosis, bacterial sepsis, invasive fungal infections (such as histoplasmosis), and infections attributable to other opportunistic pathogens.
A test for latent TB infection should be given before administration, and treatment of TB should begin before administration of Hadlima.
Patients taking Hadlima should not take a live vaccine.
The most common adverse effects (incidence > 10%) include infections (for example, upper respiratory infections, sinusitis), injection site reactions, headache, and rash.
A version of this article first appeared on Medscape.com.
The U.S. Food and Drug Administration today approved a citrate-free, high-concentration formulation of adalimumab-bwwd (Hadlima), the manufacturer, Samsung Bioepis, and its commercialization partner Organon said in an announcement.
Hadlima is a biosimilar of the tumor necrosis factor inhibitor reference product adalimumab (Humira).
Hadlima was first approved in July 2019 in a citrated, 50-mg/mL formulation. The new citrate-free, 100-mg/mL version will be available in prefilled syringe and autoinjector options.
The 100-mg/mL formulation is indicated for the same seven conditions as its 50-mg/mL counterpart: rheumatoid arthritis, polyarticular juvenile idiopathic arthritis, plaque psoriasis, psoriatic arthritis, ankylosing spondylitis, adult and pediatric Crohn’s disease, and ulcerative colitis.
The approval was based on clinical data from a randomized, single-blind, two-arm, parallel group, single-dose study that compared the pharmacokinetics, safety, tolerability, and immunogenicity of the 100-mg/mL and 50-mg/mL formulations of Hadlima in healthy volunteers.
Both low- and high-concentration formulations of Humira are currently marketed in the United States. Organon said that it expects to market Hadlima in the United States on or after July 1, 2023, in accordance with a licensing agreement with AbbVie.
The prescribing information for Hadlima includes specific warnings and areas of concern. The drug should not be administered to individuals who are known to be hypersensitive to adalimumab. The drug may lower the ability of the immune system to fight infections and may increase risk of infections, including serious infections leading to hospitalization or death, such as tuberculosis, bacterial sepsis, invasive fungal infections (such as histoplasmosis), and infections attributable to other opportunistic pathogens.
A test for latent TB infection should be given before administration, and treatment of TB should begin before administration of Hadlima.
Patients taking Hadlima should not take a live vaccine.
The most common adverse effects (incidence > 10%) include infections (for example, upper respiratory infections, sinusitis), injection site reactions, headache, and rash.
A version of this article first appeared on Medscape.com.
The U.S. Food and Drug Administration today approved a citrate-free, high-concentration formulation of adalimumab-bwwd (Hadlima), the manufacturer, Samsung Bioepis, and its commercialization partner Organon said in an announcement.
Hadlima is a biosimilar of the tumor necrosis factor inhibitor reference product adalimumab (Humira).
Hadlima was first approved in July 2019 in a citrated, 50-mg/mL formulation. The new citrate-free, 100-mg/mL version will be available in prefilled syringe and autoinjector options.
The 100-mg/mL formulation is indicated for the same seven conditions as its 50-mg/mL counterpart: rheumatoid arthritis, polyarticular juvenile idiopathic arthritis, plaque psoriasis, psoriatic arthritis, ankylosing spondylitis, adult and pediatric Crohn’s disease, and ulcerative colitis.
The approval was based on clinical data from a randomized, single-blind, two-arm, parallel group, single-dose study that compared the pharmacokinetics, safety, tolerability, and immunogenicity of the 100-mg/mL and 50-mg/mL formulations of Hadlima in healthy volunteers.
Both low- and high-concentration formulations of Humira are currently marketed in the United States. Organon said that it expects to market Hadlima in the United States on or after July 1, 2023, in accordance with a licensing agreement with AbbVie.
The prescribing information for Hadlima includes specific warnings and areas of concern. The drug should not be administered to individuals who are known to be hypersensitive to adalimumab. The drug may lower the ability of the immune system to fight infections and may increase risk of infections, including serious infections leading to hospitalization or death, such as tuberculosis, bacterial sepsis, invasive fungal infections (such as histoplasmosis), and infections attributable to other opportunistic pathogens.
A test for latent TB infection should be given before administration, and treatment of TB should begin before administration of Hadlima.
Patients taking Hadlima should not take a live vaccine.
The most common adverse effects (incidence > 10%) include infections (for example, upper respiratory infections, sinusitis), injection site reactions, headache, and rash.
A version of this article first appeared on Medscape.com.
What ketamine and psilocybin can and cannot do in depression
Recent studies with hallucinogens have raised hopes for an effective drug-based therapy to treat chronic depression. At the German Congress of Psychosomatic Medicine and Psychotherapy, Torsten Passie, MD, PhD, professor of psychiatry and psychotherapy at the Hannover (Germay) Medical School, gave a presentation on the current state of psilocybin and ketamine/esketamine research.
Dr. Passie, who also is head physician of the specialist unit for addiction and addiction prevention at the Diakonisches Werk in Hannover, has been investigating hallucinogenic substances and their application in psychotherapy for decades.
New therapies sought
In depression, gloom extends beyond the patient’s mood. For some time there has been little cause for joy with regard to chronic depression therapy. Established drug therapies hardly perform any better than placebo in meta-analyses, as a study recently confirmed. The pharmaceutical industry pulled out of psycho-pharmaceutical development more than 10 years ago. What’s more, the number of cases is rising, especially among young people, and there are long waiting times for psychotherapy appointments.
It is no wonder that some are welcoming new drug-based approaches with lysergic acid diethylamide (LSD)–like hallucinogens. In 2016, a study on psilocybin was published in The Lancet Psychiatry, although the study was unblinded and included only 24 patients.
Evoking emotions
A range of substances can be classed as hallucinogens, including psilocybin, mescaline, LSD, 3,4-methylenedioxy-methamphetamine (MDMA, also known as ecstasy), and ketamine.
Taking hallucinogens can cause a release of serotonin and dopamine, an increase in activity levels in the brain, a shift in stimulus filtering, an increase in the production of internal stimuli (inner experiences), and a change in sensory integration (for example, synesthesia).
Besides falling into a dreamlike state, patients can achieve an expansion or narrowing of consciousness if they focus on an inner experience. Internal perception increases. Perceptual routines are broken apart. Thought processes become more image-based and are more associative than normal.
Patients therefore are more capable of making new and unusual connections between different biographical or current situations. Previously unconscious ideas can become conscious. At higher doses, ego loss can occur, which can be associated with a mystical feeling of connectedness.
Hallucinogens mainly evoke and heighten emotions. Those effects may be experienced strongly as internal visions or in physical manifestations (for example, crying or laughing). In contrast, conventional antidepressants work by suppressing emotions (that is, emotional blunting).
These different mechanisms result in two contrasting management strategies. For example, SSRI antidepressants cause a patient to perceive workplace bullying as less severe and to do nothing to change the situation; the patient remains passive.
In contrast, a therapeutically guided, emotionally activating experience on hallucinogens can help the patient to try more actively to change the stressful situation.
Ketamine has a special place among hallucinogens. Unlike other hallucinogens, ketamine causes a strong clouding of consciousness, a reduction in physical sensory perception, and significant disruption in thinking and memory. It is therefore only suitable as a short-term intervention and is therapeutically impractical over the long term.
Ketamine’s effects
Ketamine, a racemic mixture of the enantiomers S-ketamine and R-ketamine, was originally used only as an analgesic and anesthetic. Owing to its rapid antidepressant effect, it has since also been used as an emergency medication for severe depression, sometimes in combination with SSRIs or serotonin noradrenaline reuptake inhibitors.
Approximately 60% of patients respond to the treatment. Whereas with conventional antidepressants, onset of action requires 10-14 days, ketamine is effective within a few hours. However, relapse always occurs, usually very quickly. After 2-3 days, the effect is usually approximately that of a placebo. An administration interval of about 2 days is optimal. However, “resistance” to the effect often develops after some time: the drug’s antidepressant effect diminishes.
Ketamine also has some unpleasant side effects, such as depersonalization, dissociation, impaired thinking, nystagmus, and psychotomimetic effects. Nausea and vomiting also occur. Interestingly, the latter does not bother the patient much, owing to the drug’s psychological effects, and it does not lead to treatment discontinuation, said Dr. Passie, who described his clinical experiences with ketamine.
Since ketamine causes a considerable clouding of consciousness, sensory disorders, and significant memory problems, it is not suitable for psychedelic-assisted psychotherapy, unlike LSD or psilocybin, he emphasized.
Ketamine 2.0?
Esketamine, the pure S-enantiomer of ketamine, has been on the market since 2019 in the form of a nasal spray (Spravato). Esketamine has been approved in combination with oral antidepressant therapy for adults with a moderate to severe episode of major depression for acute treatment of a psychiatric emergency.
A meta-analysis from 2022 concluded that the original racemic ketamine is better than the new esketamine in reducing symptoms of depression.
In his own comprehensive study, Dr. Passie concluded that the mental impairments that occur during therapy did not differ significantly between substances. The patients even felt that the side effects from esketamine therapy were much more mentally unpleasant, said Dr. Passie. He concluded that the R-enantiomer may have a kind of protective effect against some of the psychopathological effects of the S-enantiomer (esketamine).
In addition, preclinical studies have indicated that the antidepressant effects of R-enantiomer, which is not contained in esketamine, are longer lasting and stronger.
Another problem is absorption, which can be inconsistent with a nasal spray. It may differ, for example, depending on the ambient humidity or whether the patient has recently had a cold. In addition, the spray is far more expensive than the ketamine injection, said Dr. Passie. Patients must also use the nasal spray under supervision at a medical practice (as with the intravenous application) and must receive follow-up care there. It therefore offers no advantage over the ketamine injection.
According to the Institute for Quality and Efficiency in Healthcare, no additional benefit has been proven for esketamine over standard therapies for adults who have experienced a moderate to severe depressive episode when used as short-term treatment for the rapid reduction of depressive symptoms in a psychiatric emergency. The German Medical Association agreed with this evaluation in October 2021.
In the United Kingdom, the medication was never approved, owing to the fact that it was too expensive and that no studies comparing it with psychotherapy were available.
Add-on psilocybin?
What was experienced under the influence of psilocybin can also be subsequently processed and used in psychotherapy.
The acute effect of psilocybin begins after approximately 40 minutes and lasts for 4-6 hours. The antidepressant effect, if it occurs at all, is of immediate onset. Unlike ketamine/esketamine, psilocybin hardly has any physical side effects.
The neurologic mechanism of action has been investigated recently using fMRI and PET techniques. According to the investigations, the substance causes individual networks of activity in the patient’s brain to interconnect more strongly, said Dr. Passie. The thalamus, the filter station for sensory information, as well as the limbic and paralimbic structures, which generate emotions, and the cortex are all activated more strongly.
Two therapeutic settings
Psilocybin, at least in the context of studies, is used in two settings: psycholytic therapy and psychedelic therapy. Both settings originated in the 1950s and were also used with LSD as the active substance.
Psycholytic therapy with psilocybin entails multiple administrations at low doses (for example, 10-18 mg), incorporated into a longer, mostly psychodynamic therapy of around 50-100 hours (often on an inpatient basis at the beginning). It results in what is described as an extended encounter with oneself. The focus is on psychodynamic experiences, such as memories and internal conflicts. In addition, novel experiences with oneself and self-recognition are important.
Psychedelic therapy generally entails one or two sessions with a high dose (for example, 25-35 mg psilocybin). The preparation and follow-up are limited to a few sessions. These methods refer to so-called transpersonal psychology, which addresses extraordinary states of consciousness in line with religious experiences. It often leads to an intense self-confrontation as well as to new evaluations of self and world. The central element to this therapy is the experience of a mystical ego loss and the concomitant feeling of connectedness, which should help to expand one’s perspective.
Euphoria and disillusionment
The first promising studies with a few patients suffering from depression were followed by others in which the euphoria was allowed to fade away somewhat. In the first direct comparison in a methodically high-grade double-blind study, psilocybin was inferior to the SSRI antidepressant escitalopram.
“There is a great variation in response from person to person,” said Dr. Passie. “The better the study is methodically controlled, the worse the results,” he hypothesized.
“Since the method is up to 50 times more expensive in practice, compared to SSRI therapy over 6-12 weeks, the question clearly must be asked as to whether it really has any great future.”
Outlook for psilocybin
Nevertheless, Dr. Passie still sees potential in psilocybin. He considers an approach in which psilocybin therapy is more firmly incorporated into psychotherapy, with between four and 10 therapy sessions before and after administration of a lower therapeutic dose of the substance, to be more promising.
“With this kind of intensive preparation and follow-up, as well as the repeated psilocybin sessions, the patient can benefit much more than is possible with one or two high-dose sessions,” said Dr. Passie, who also is chair of the International Society for Substance-Assisted Psychotherapy. “The constant ‘in-depth work on the ego’ required for drastic therapeutic changes can be more effective and lead to permanent improvements. I have no doubt about this.”
In Dr. Passie’s opinion, the best approach would involve a dignified inpatient setting with a longer period of follow-up care and consistent posttreatment care, including group therapy. The shape of future psilocybin therapy depends on whether the rather abrupt change seen with high-dose psychedelic therapy is permanent. The answer to this question will be decisive for the method and manner of its future clinical use.
Because of the somewhat negative study results, however, the initial investors are pulling out. Dr. Passie is therefore skeptical about whether the necessary larger studies will take place and whether psilocybin will make it onto the market.
In Switzerland, which is not subject to EU restrictions, more than 30 physicians have been authorized to use psilocybin, LSD, and MDMA in psychotherapy sessions. Still, in some respects this is a special case that cannot be transferred easily to other countries, said Dr. Passie.
Possible psilocybin improvement?
Various chemical derivatives of psychoactive substances have been researched, including a psilocybin variant with the label CYB003. With CYB003, the length of the acute psychedelic experience is reduced from around 6 hours (such as with psilocybin) to 1 hour. The plasma concentration of the substance is less variable between different patients. It is assumed that its effects will also differ less from person to person.
In July, researchers began a study of the use of CYB003 in the treatment of major depression. In the randomized, double-blind, placebo-controlled study with 40 patients, multiple doses of the substance will be administered.
When asked, Dr. Passie was rather skeptical about the study. He considers the approaches with psilocybin derivatives to be the consequences of a “gold-rush atmosphere” and expects there will be no real additional benefit, especially not a reduction in the period of action.
A version of this article first appeared on Medscape.com.
Recent studies with hallucinogens have raised hopes for an effective drug-based therapy to treat chronic depression. At the German Congress of Psychosomatic Medicine and Psychotherapy, Torsten Passie, MD, PhD, professor of psychiatry and psychotherapy at the Hannover (Germay) Medical School, gave a presentation on the current state of psilocybin and ketamine/esketamine research.
Dr. Passie, who also is head physician of the specialist unit for addiction and addiction prevention at the Diakonisches Werk in Hannover, has been investigating hallucinogenic substances and their application in psychotherapy for decades.
New therapies sought
In depression, gloom extends beyond the patient’s mood. For some time there has been little cause for joy with regard to chronic depression therapy. Established drug therapies hardly perform any better than placebo in meta-analyses, as a study recently confirmed. The pharmaceutical industry pulled out of psycho-pharmaceutical development more than 10 years ago. What’s more, the number of cases is rising, especially among young people, and there are long waiting times for psychotherapy appointments.
It is no wonder that some are welcoming new drug-based approaches with lysergic acid diethylamide (LSD)–like hallucinogens. In 2016, a study on psilocybin was published in The Lancet Psychiatry, although the study was unblinded and included only 24 patients.
Evoking emotions
A range of substances can be classed as hallucinogens, including psilocybin, mescaline, LSD, 3,4-methylenedioxy-methamphetamine (MDMA, also known as ecstasy), and ketamine.
Taking hallucinogens can cause a release of serotonin and dopamine, an increase in activity levels in the brain, a shift in stimulus filtering, an increase in the production of internal stimuli (inner experiences), and a change in sensory integration (for example, synesthesia).
Besides falling into a dreamlike state, patients can achieve an expansion or narrowing of consciousness if they focus on an inner experience. Internal perception increases. Perceptual routines are broken apart. Thought processes become more image-based and are more associative than normal.
Patients therefore are more capable of making new and unusual connections between different biographical or current situations. Previously unconscious ideas can become conscious. At higher doses, ego loss can occur, which can be associated with a mystical feeling of connectedness.
Hallucinogens mainly evoke and heighten emotions. Those effects may be experienced strongly as internal visions or in physical manifestations (for example, crying or laughing). In contrast, conventional antidepressants work by suppressing emotions (that is, emotional blunting).
These different mechanisms result in two contrasting management strategies. For example, SSRI antidepressants cause a patient to perceive workplace bullying as less severe and to do nothing to change the situation; the patient remains passive.
In contrast, a therapeutically guided, emotionally activating experience on hallucinogens can help the patient to try more actively to change the stressful situation.
Ketamine has a special place among hallucinogens. Unlike other hallucinogens, ketamine causes a strong clouding of consciousness, a reduction in physical sensory perception, and significant disruption in thinking and memory. It is therefore only suitable as a short-term intervention and is therapeutically impractical over the long term.
Ketamine’s effects
Ketamine, a racemic mixture of the enantiomers S-ketamine and R-ketamine, was originally used only as an analgesic and anesthetic. Owing to its rapid antidepressant effect, it has since also been used as an emergency medication for severe depression, sometimes in combination with SSRIs or serotonin noradrenaline reuptake inhibitors.
Approximately 60% of patients respond to the treatment. Whereas with conventional antidepressants, onset of action requires 10-14 days, ketamine is effective within a few hours. However, relapse always occurs, usually very quickly. After 2-3 days, the effect is usually approximately that of a placebo. An administration interval of about 2 days is optimal. However, “resistance” to the effect often develops after some time: the drug’s antidepressant effect diminishes.
Ketamine also has some unpleasant side effects, such as depersonalization, dissociation, impaired thinking, nystagmus, and psychotomimetic effects. Nausea and vomiting also occur. Interestingly, the latter does not bother the patient much, owing to the drug’s psychological effects, and it does not lead to treatment discontinuation, said Dr. Passie, who described his clinical experiences with ketamine.
Since ketamine causes a considerable clouding of consciousness, sensory disorders, and significant memory problems, it is not suitable for psychedelic-assisted psychotherapy, unlike LSD or psilocybin, he emphasized.
Ketamine 2.0?
Esketamine, the pure S-enantiomer of ketamine, has been on the market since 2019 in the form of a nasal spray (Spravato). Esketamine has been approved in combination with oral antidepressant therapy for adults with a moderate to severe episode of major depression for acute treatment of a psychiatric emergency.
A meta-analysis from 2022 concluded that the original racemic ketamine is better than the new esketamine in reducing symptoms of depression.
In his own comprehensive study, Dr. Passie concluded that the mental impairments that occur during therapy did not differ significantly between substances. The patients even felt that the side effects from esketamine therapy were much more mentally unpleasant, said Dr. Passie. He concluded that the R-enantiomer may have a kind of protective effect against some of the psychopathological effects of the S-enantiomer (esketamine).
In addition, preclinical studies have indicated that the antidepressant effects of R-enantiomer, which is not contained in esketamine, are longer lasting and stronger.
Another problem is absorption, which can be inconsistent with a nasal spray. It may differ, for example, depending on the ambient humidity or whether the patient has recently had a cold. In addition, the spray is far more expensive than the ketamine injection, said Dr. Passie. Patients must also use the nasal spray under supervision at a medical practice (as with the intravenous application) and must receive follow-up care there. It therefore offers no advantage over the ketamine injection.
According to the Institute for Quality and Efficiency in Healthcare, no additional benefit has been proven for esketamine over standard therapies for adults who have experienced a moderate to severe depressive episode when used as short-term treatment for the rapid reduction of depressive symptoms in a psychiatric emergency. The German Medical Association agreed with this evaluation in October 2021.
In the United Kingdom, the medication was never approved, owing to the fact that it was too expensive and that no studies comparing it with psychotherapy were available.
Add-on psilocybin?
What was experienced under the influence of psilocybin can also be subsequently processed and used in psychotherapy.
The acute effect of psilocybin begins after approximately 40 minutes and lasts for 4-6 hours. The antidepressant effect, if it occurs at all, is of immediate onset. Unlike ketamine/esketamine, psilocybin hardly has any physical side effects.
The neurologic mechanism of action has been investigated recently using fMRI and PET techniques. According to the investigations, the substance causes individual networks of activity in the patient’s brain to interconnect more strongly, said Dr. Passie. The thalamus, the filter station for sensory information, as well as the limbic and paralimbic structures, which generate emotions, and the cortex are all activated more strongly.
Two therapeutic settings
Psilocybin, at least in the context of studies, is used in two settings: psycholytic therapy and psychedelic therapy. Both settings originated in the 1950s and were also used with LSD as the active substance.
Psycholytic therapy with psilocybin entails multiple administrations at low doses (for example, 10-18 mg), incorporated into a longer, mostly psychodynamic therapy of around 50-100 hours (often on an inpatient basis at the beginning). It results in what is described as an extended encounter with oneself. The focus is on psychodynamic experiences, such as memories and internal conflicts. In addition, novel experiences with oneself and self-recognition are important.
Psychedelic therapy generally entails one or two sessions with a high dose (for example, 25-35 mg psilocybin). The preparation and follow-up are limited to a few sessions. These methods refer to so-called transpersonal psychology, which addresses extraordinary states of consciousness in line with religious experiences. It often leads to an intense self-confrontation as well as to new evaluations of self and world. The central element to this therapy is the experience of a mystical ego loss and the concomitant feeling of connectedness, which should help to expand one’s perspective.
Euphoria and disillusionment
The first promising studies with a few patients suffering from depression were followed by others in which the euphoria was allowed to fade away somewhat. In the first direct comparison in a methodically high-grade double-blind study, psilocybin was inferior to the SSRI antidepressant escitalopram.
“There is a great variation in response from person to person,” said Dr. Passie. “The better the study is methodically controlled, the worse the results,” he hypothesized.
“Since the method is up to 50 times more expensive in practice, compared to SSRI therapy over 6-12 weeks, the question clearly must be asked as to whether it really has any great future.”
Outlook for psilocybin
Nevertheless, Dr. Passie still sees potential in psilocybin. He considers an approach in which psilocybin therapy is more firmly incorporated into psychotherapy, with between four and 10 therapy sessions before and after administration of a lower therapeutic dose of the substance, to be more promising.
“With this kind of intensive preparation and follow-up, as well as the repeated psilocybin sessions, the patient can benefit much more than is possible with one or two high-dose sessions,” said Dr. Passie, who also is chair of the International Society for Substance-Assisted Psychotherapy. “The constant ‘in-depth work on the ego’ required for drastic therapeutic changes can be more effective and lead to permanent improvements. I have no doubt about this.”
In Dr. Passie’s opinion, the best approach would involve a dignified inpatient setting with a longer period of follow-up care and consistent posttreatment care, including group therapy. The shape of future psilocybin therapy depends on whether the rather abrupt change seen with high-dose psychedelic therapy is permanent. The answer to this question will be decisive for the method and manner of its future clinical use.
Because of the somewhat negative study results, however, the initial investors are pulling out. Dr. Passie is therefore skeptical about whether the necessary larger studies will take place and whether psilocybin will make it onto the market.
In Switzerland, which is not subject to EU restrictions, more than 30 physicians have been authorized to use psilocybin, LSD, and MDMA in psychotherapy sessions. Still, in some respects this is a special case that cannot be transferred easily to other countries, said Dr. Passie.
Possible psilocybin improvement?
Various chemical derivatives of psychoactive substances have been researched, including a psilocybin variant with the label CYB003. With CYB003, the length of the acute psychedelic experience is reduced from around 6 hours (such as with psilocybin) to 1 hour. The plasma concentration of the substance is less variable between different patients. It is assumed that its effects will also differ less from person to person.
In July, researchers began a study of the use of CYB003 in the treatment of major depression. In the randomized, double-blind, placebo-controlled study with 40 patients, multiple doses of the substance will be administered.
When asked, Dr. Passie was rather skeptical about the study. He considers the approaches with psilocybin derivatives to be the consequences of a “gold-rush atmosphere” and expects there will be no real additional benefit, especially not a reduction in the period of action.
A version of this article first appeared on Medscape.com.
Recent studies with hallucinogens have raised hopes for an effective drug-based therapy to treat chronic depression. At the German Congress of Psychosomatic Medicine and Psychotherapy, Torsten Passie, MD, PhD, professor of psychiatry and psychotherapy at the Hannover (Germay) Medical School, gave a presentation on the current state of psilocybin and ketamine/esketamine research.
Dr. Passie, who also is head physician of the specialist unit for addiction and addiction prevention at the Diakonisches Werk in Hannover, has been investigating hallucinogenic substances and their application in psychotherapy for decades.
New therapies sought
In depression, gloom extends beyond the patient’s mood. For some time there has been little cause for joy with regard to chronic depression therapy. Established drug therapies hardly perform any better than placebo in meta-analyses, as a study recently confirmed. The pharmaceutical industry pulled out of psycho-pharmaceutical development more than 10 years ago. What’s more, the number of cases is rising, especially among young people, and there are long waiting times for psychotherapy appointments.
It is no wonder that some are welcoming new drug-based approaches with lysergic acid diethylamide (LSD)–like hallucinogens. In 2016, a study on psilocybin was published in The Lancet Psychiatry, although the study was unblinded and included only 24 patients.
Evoking emotions
A range of substances can be classed as hallucinogens, including psilocybin, mescaline, LSD, 3,4-methylenedioxy-methamphetamine (MDMA, also known as ecstasy), and ketamine.
Taking hallucinogens can cause a release of serotonin and dopamine, an increase in activity levels in the brain, a shift in stimulus filtering, an increase in the production of internal stimuli (inner experiences), and a change in sensory integration (for example, synesthesia).
Besides falling into a dreamlike state, patients can achieve an expansion or narrowing of consciousness if they focus on an inner experience. Internal perception increases. Perceptual routines are broken apart. Thought processes become more image-based and are more associative than normal.
Patients therefore are more capable of making new and unusual connections between different biographical or current situations. Previously unconscious ideas can become conscious. At higher doses, ego loss can occur, which can be associated with a mystical feeling of connectedness.
Hallucinogens mainly evoke and heighten emotions. Those effects may be experienced strongly as internal visions or in physical manifestations (for example, crying or laughing). In contrast, conventional antidepressants work by suppressing emotions (that is, emotional blunting).
These different mechanisms result in two contrasting management strategies. For example, SSRI antidepressants cause a patient to perceive workplace bullying as less severe and to do nothing to change the situation; the patient remains passive.
In contrast, a therapeutically guided, emotionally activating experience on hallucinogens can help the patient to try more actively to change the stressful situation.
Ketamine has a special place among hallucinogens. Unlike other hallucinogens, ketamine causes a strong clouding of consciousness, a reduction in physical sensory perception, and significant disruption in thinking and memory. It is therefore only suitable as a short-term intervention and is therapeutically impractical over the long term.
Ketamine’s effects
Ketamine, a racemic mixture of the enantiomers S-ketamine and R-ketamine, was originally used only as an analgesic and anesthetic. Owing to its rapid antidepressant effect, it has since also been used as an emergency medication for severe depression, sometimes in combination with SSRIs or serotonin noradrenaline reuptake inhibitors.
Approximately 60% of patients respond to the treatment. Whereas with conventional antidepressants, onset of action requires 10-14 days, ketamine is effective within a few hours. However, relapse always occurs, usually very quickly. After 2-3 days, the effect is usually approximately that of a placebo. An administration interval of about 2 days is optimal. However, “resistance” to the effect often develops after some time: the drug’s antidepressant effect diminishes.
Ketamine also has some unpleasant side effects, such as depersonalization, dissociation, impaired thinking, nystagmus, and psychotomimetic effects. Nausea and vomiting also occur. Interestingly, the latter does not bother the patient much, owing to the drug’s psychological effects, and it does not lead to treatment discontinuation, said Dr. Passie, who described his clinical experiences with ketamine.
Since ketamine causes a considerable clouding of consciousness, sensory disorders, and significant memory problems, it is not suitable for psychedelic-assisted psychotherapy, unlike LSD or psilocybin, he emphasized.
Ketamine 2.0?
Esketamine, the pure S-enantiomer of ketamine, has been on the market since 2019 in the form of a nasal spray (Spravato). Esketamine has been approved in combination with oral antidepressant therapy for adults with a moderate to severe episode of major depression for acute treatment of a psychiatric emergency.
A meta-analysis from 2022 concluded that the original racemic ketamine is better than the new esketamine in reducing symptoms of depression.
In his own comprehensive study, Dr. Passie concluded that the mental impairments that occur during therapy did not differ significantly between substances. The patients even felt that the side effects from esketamine therapy were much more mentally unpleasant, said Dr. Passie. He concluded that the R-enantiomer may have a kind of protective effect against some of the psychopathological effects of the S-enantiomer (esketamine).
In addition, preclinical studies have indicated that the antidepressant effects of R-enantiomer, which is not contained in esketamine, are longer lasting and stronger.
Another problem is absorption, which can be inconsistent with a nasal spray. It may differ, for example, depending on the ambient humidity or whether the patient has recently had a cold. In addition, the spray is far more expensive than the ketamine injection, said Dr. Passie. Patients must also use the nasal spray under supervision at a medical practice (as with the intravenous application) and must receive follow-up care there. It therefore offers no advantage over the ketamine injection.
According to the Institute for Quality and Efficiency in Healthcare, no additional benefit has been proven for esketamine over standard therapies for adults who have experienced a moderate to severe depressive episode when used as short-term treatment for the rapid reduction of depressive symptoms in a psychiatric emergency. The German Medical Association agreed with this evaluation in October 2021.
In the United Kingdom, the medication was never approved, owing to the fact that it was too expensive and that no studies comparing it with psychotherapy were available.
Add-on psilocybin?
What was experienced under the influence of psilocybin can also be subsequently processed and used in psychotherapy.
The acute effect of psilocybin begins after approximately 40 minutes and lasts for 4-6 hours. The antidepressant effect, if it occurs at all, is of immediate onset. Unlike ketamine/esketamine, psilocybin hardly has any physical side effects.
The neurologic mechanism of action has been investigated recently using fMRI and PET techniques. According to the investigations, the substance causes individual networks of activity in the patient’s brain to interconnect more strongly, said Dr. Passie. The thalamus, the filter station for sensory information, as well as the limbic and paralimbic structures, which generate emotions, and the cortex are all activated more strongly.
Two therapeutic settings
Psilocybin, at least in the context of studies, is used in two settings: psycholytic therapy and psychedelic therapy. Both settings originated in the 1950s and were also used with LSD as the active substance.
Psycholytic therapy with psilocybin entails multiple administrations at low doses (for example, 10-18 mg), incorporated into a longer, mostly psychodynamic therapy of around 50-100 hours (often on an inpatient basis at the beginning). It results in what is described as an extended encounter with oneself. The focus is on psychodynamic experiences, such as memories and internal conflicts. In addition, novel experiences with oneself and self-recognition are important.
Psychedelic therapy generally entails one or two sessions with a high dose (for example, 25-35 mg psilocybin). The preparation and follow-up are limited to a few sessions. These methods refer to so-called transpersonal psychology, which addresses extraordinary states of consciousness in line with religious experiences. It often leads to an intense self-confrontation as well as to new evaluations of self and world. The central element to this therapy is the experience of a mystical ego loss and the concomitant feeling of connectedness, which should help to expand one’s perspective.
Euphoria and disillusionment
The first promising studies with a few patients suffering from depression were followed by others in which the euphoria was allowed to fade away somewhat. In the first direct comparison in a methodically high-grade double-blind study, psilocybin was inferior to the SSRI antidepressant escitalopram.
“There is a great variation in response from person to person,” said Dr. Passie. “The better the study is methodically controlled, the worse the results,” he hypothesized.
“Since the method is up to 50 times more expensive in practice, compared to SSRI therapy over 6-12 weeks, the question clearly must be asked as to whether it really has any great future.”
Outlook for psilocybin
Nevertheless, Dr. Passie still sees potential in psilocybin. He considers an approach in which psilocybin therapy is more firmly incorporated into psychotherapy, with between four and 10 therapy sessions before and after administration of a lower therapeutic dose of the substance, to be more promising.
“With this kind of intensive preparation and follow-up, as well as the repeated psilocybin sessions, the patient can benefit much more than is possible with one or two high-dose sessions,” said Dr. Passie, who also is chair of the International Society for Substance-Assisted Psychotherapy. “The constant ‘in-depth work on the ego’ required for drastic therapeutic changes can be more effective and lead to permanent improvements. I have no doubt about this.”
In Dr. Passie’s opinion, the best approach would involve a dignified inpatient setting with a longer period of follow-up care and consistent posttreatment care, including group therapy. The shape of future psilocybin therapy depends on whether the rather abrupt change seen with high-dose psychedelic therapy is permanent. The answer to this question will be decisive for the method and manner of its future clinical use.
Because of the somewhat negative study results, however, the initial investors are pulling out. Dr. Passie is therefore skeptical about whether the necessary larger studies will take place and whether psilocybin will make it onto the market.
In Switzerland, which is not subject to EU restrictions, more than 30 physicians have been authorized to use psilocybin, LSD, and MDMA in psychotherapy sessions. Still, in some respects this is a special case that cannot be transferred easily to other countries, said Dr. Passie.
Possible psilocybin improvement?
Various chemical derivatives of psychoactive substances have been researched, including a psilocybin variant with the label CYB003. With CYB003, the length of the acute psychedelic experience is reduced from around 6 hours (such as with psilocybin) to 1 hour. The plasma concentration of the substance is less variable between different patients. It is assumed that its effects will also differ less from person to person.
In July, researchers began a study of the use of CYB003 in the treatment of major depression. In the randomized, double-blind, placebo-controlled study with 40 patients, multiple doses of the substance will be administered.
When asked, Dr. Passie was rather skeptical about the study. He considers the approaches with psilocybin derivatives to be the consequences of a “gold-rush atmosphere” and expects there will be no real additional benefit, especially not a reduction in the period of action.
A version of this article first appeared on Medscape.com.
Degree of PPG reduction linked with ascites control after TIPS
A reduction in portal hepatic pressure gradient (PPG) soon after implantation of a transjugular intrahepatic portosystemic shunt (TIPS) greater than 60% was associated with improved ascites control at 6 weeks in a study published in Hepatology.
“The probability of ascites resolution is much higher if PPG reduction exceeded 60% of PPG before TIPS,” wrote the researchers, led by co–first authors Alexander Queck, MD, a postdoctoral researcher in the department of internal medicine at University Hospital Frankfurt (Germany) and Goethe University Frankfurt, and Louise Schwierz, MD, of the department of internal medicine in the University Hospital Bonn (Germany). “This study suggests that, even in patients with uncomplicated TIPS insertion, a short-term follow-up 6 weeks after TIPS should be scheduled to be able to predict their course of disease.”
The authors investigated the decrease of PPG in a single-center, retrospective analysis of 341 patients with liver cirrhosis undergoing TIPS insertion for recurrent or refractory ascites between March 1994 and July 2015. During each procedure, portal and inferior vena cava pressures were invasively measured and correlated with patients’ outcomes and ascites progression over time. In 241 patients, or 71%, chronic alcohol consumption was the reason for cirrhosis development, followed by 13% with chronic viral hepatitis (n = 43). Median survival after TIPS insertion was 102 weeks, and 19 patients received liver transplants over time.
Median portal pressure before TIPS placement was 28 mm Hg, which decreased to a median of 21 mm Hg after TIPS. Median PPG levels were 19 mm Hg before TIPS and 8 mm Hg immediately after TIPS placement.
At the time of TIPS placement, 65 patients, or 19%, had hepatic encephalopathy, and nine had severe hepatic encephalopathy. Six weeks after TIPS, two had episodes of hepatic encephalopathy.
After 6 weeks, ascites significantly improved through TIPS insertion. About 47% had a complete resolution of ascites at 6 weeks, whereas 29% had ascites detectable only by ultrasound and 24% of patients still needed large-volume paracentesis. There was an association between extent of PPG reduction and ascites resolution: Median PPG reduction was 55% of initial PPG in patients with persistence of severe ascites, 58% in patients with ascites detected by ultrasound, and 65% in patients with complete resolution of ascites at 6 weeks after TIPS.
Ascites resolved in 54% of patients with higher PPG reduction (60% or above), compared with 39% of patients with lower PPG reduction (below 60%). Ascites that was detected by ultrasound in another 27% of patients with higher PPG reduction, compared with 31% of patients with lower PPG reduction. In addition, persistent severe ascites was seen in 19% of patients with higher PPG reduction, compared with 30% of patients with lower PPG reduction.
The authors also noted the importance of timing follow-up evaluation: They noted that post-TIPS follow-up is a frequent question and not yet standardized; in this study, they found that, with follow-up at 6 weeks, they could “clearly stratify the course post TIPS” and this could “detect patients at high risk of unstable course of disease.”
PPG reduction of more than 60% after TIPS correlated with resolution of severe ascites 6 weeks after TIPS, the study authors concluded.
“This is one of the first studies that highlights the optimal goal for a portal pressure gradient in the setting of refractory ascites post TIPS procedure,” said Neeral Shah, MD, an associate professor of gastroenterology and hepatology and transplant hepatology specialist at the University of Virginia, Charlottesville.
“It is exciting to see some data from patients examining a question we have always thought to be true but have never quantified,” he said. “As a clinician who refers patients for TIPS, one of my biggest concerns is that significant shunting of blood past liver tissue through a TIPS can lead to the development of confusion.”
Dr. Shah, who wasn’t involved with the study, pointed to ongoing questions about hepatic encephalopathy around TIPS. The study authors didn’t find an issue with this among their study population, and some patients had improvements in their mental status after TIPS.
“This has not been my experience in those patients with hepatic encephalopathy at baseline pre-TIPS,” Dr. Shah said. “This point will need to be clarified further, especially if we are aiming for portal pressure gradients of 10 mm Hg or less in all patients with refractory ascites.”
The study authors declared that the research was conducted without commercial or financial relationships that could be construed as a potential conflict of interest. The authors were supported by the German Research Foundation, the German Federal Ministry of Education and Research, the European Union’s Horizon 2020 research program, and Goethe University Frankfurt. Dr. Shah reported no relevant disclosures.
A reduction in portal hepatic pressure gradient (PPG) soon after implantation of a transjugular intrahepatic portosystemic shunt (TIPS) greater than 60% was associated with improved ascites control at 6 weeks in a study published in Hepatology.
“The probability of ascites resolution is much higher if PPG reduction exceeded 60% of PPG before TIPS,” wrote the researchers, led by co–first authors Alexander Queck, MD, a postdoctoral researcher in the department of internal medicine at University Hospital Frankfurt (Germany) and Goethe University Frankfurt, and Louise Schwierz, MD, of the department of internal medicine in the University Hospital Bonn (Germany). “This study suggests that, even in patients with uncomplicated TIPS insertion, a short-term follow-up 6 weeks after TIPS should be scheduled to be able to predict their course of disease.”
The authors investigated the decrease of PPG in a single-center, retrospective analysis of 341 patients with liver cirrhosis undergoing TIPS insertion for recurrent or refractory ascites between March 1994 and July 2015. During each procedure, portal and inferior vena cava pressures were invasively measured and correlated with patients’ outcomes and ascites progression over time. In 241 patients, or 71%, chronic alcohol consumption was the reason for cirrhosis development, followed by 13% with chronic viral hepatitis (n = 43). Median survival after TIPS insertion was 102 weeks, and 19 patients received liver transplants over time.
Median portal pressure before TIPS placement was 28 mm Hg, which decreased to a median of 21 mm Hg after TIPS. Median PPG levels were 19 mm Hg before TIPS and 8 mm Hg immediately after TIPS placement.
At the time of TIPS placement, 65 patients, or 19%, had hepatic encephalopathy, and nine had severe hepatic encephalopathy. Six weeks after TIPS, two had episodes of hepatic encephalopathy.
After 6 weeks, ascites significantly improved through TIPS insertion. About 47% had a complete resolution of ascites at 6 weeks, whereas 29% had ascites detectable only by ultrasound and 24% of patients still needed large-volume paracentesis. There was an association between extent of PPG reduction and ascites resolution: Median PPG reduction was 55% of initial PPG in patients with persistence of severe ascites, 58% in patients with ascites detected by ultrasound, and 65% in patients with complete resolution of ascites at 6 weeks after TIPS.
Ascites resolved in 54% of patients with higher PPG reduction (60% or above), compared with 39% of patients with lower PPG reduction (below 60%). Ascites that was detected by ultrasound in another 27% of patients with higher PPG reduction, compared with 31% of patients with lower PPG reduction. In addition, persistent severe ascites was seen in 19% of patients with higher PPG reduction, compared with 30% of patients with lower PPG reduction.
The authors also noted the importance of timing follow-up evaluation: They noted that post-TIPS follow-up is a frequent question and not yet standardized; in this study, they found that, with follow-up at 6 weeks, they could “clearly stratify the course post TIPS” and this could “detect patients at high risk of unstable course of disease.”
PPG reduction of more than 60% after TIPS correlated with resolution of severe ascites 6 weeks after TIPS, the study authors concluded.
“This is one of the first studies that highlights the optimal goal for a portal pressure gradient in the setting of refractory ascites post TIPS procedure,” said Neeral Shah, MD, an associate professor of gastroenterology and hepatology and transplant hepatology specialist at the University of Virginia, Charlottesville.
“It is exciting to see some data from patients examining a question we have always thought to be true but have never quantified,” he said. “As a clinician who refers patients for TIPS, one of my biggest concerns is that significant shunting of blood past liver tissue through a TIPS can lead to the development of confusion.”
Dr. Shah, who wasn’t involved with the study, pointed to ongoing questions about hepatic encephalopathy around TIPS. The study authors didn’t find an issue with this among their study population, and some patients had improvements in their mental status after TIPS.
“This has not been my experience in those patients with hepatic encephalopathy at baseline pre-TIPS,” Dr. Shah said. “This point will need to be clarified further, especially if we are aiming for portal pressure gradients of 10 mm Hg or less in all patients with refractory ascites.”
The study authors declared that the research was conducted without commercial or financial relationships that could be construed as a potential conflict of interest. The authors were supported by the German Research Foundation, the German Federal Ministry of Education and Research, the European Union’s Horizon 2020 research program, and Goethe University Frankfurt. Dr. Shah reported no relevant disclosures.
A reduction in portal hepatic pressure gradient (PPG) soon after implantation of a transjugular intrahepatic portosystemic shunt (TIPS) greater than 60% was associated with improved ascites control at 6 weeks in a study published in Hepatology.
“The probability of ascites resolution is much higher if PPG reduction exceeded 60% of PPG before TIPS,” wrote the researchers, led by co–first authors Alexander Queck, MD, a postdoctoral researcher in the department of internal medicine at University Hospital Frankfurt (Germany) and Goethe University Frankfurt, and Louise Schwierz, MD, of the department of internal medicine in the University Hospital Bonn (Germany). “This study suggests that, even in patients with uncomplicated TIPS insertion, a short-term follow-up 6 weeks after TIPS should be scheduled to be able to predict their course of disease.”
The authors investigated the decrease of PPG in a single-center, retrospective analysis of 341 patients with liver cirrhosis undergoing TIPS insertion for recurrent or refractory ascites between March 1994 and July 2015. During each procedure, portal and inferior vena cava pressures were invasively measured and correlated with patients’ outcomes and ascites progression over time. In 241 patients, or 71%, chronic alcohol consumption was the reason for cirrhosis development, followed by 13% with chronic viral hepatitis (n = 43). Median survival after TIPS insertion was 102 weeks, and 19 patients received liver transplants over time.
Median portal pressure before TIPS placement was 28 mm Hg, which decreased to a median of 21 mm Hg after TIPS. Median PPG levels were 19 mm Hg before TIPS and 8 mm Hg immediately after TIPS placement.
At the time of TIPS placement, 65 patients, or 19%, had hepatic encephalopathy, and nine had severe hepatic encephalopathy. Six weeks after TIPS, two had episodes of hepatic encephalopathy.
After 6 weeks, ascites significantly improved through TIPS insertion. About 47% had a complete resolution of ascites at 6 weeks, whereas 29% had ascites detectable only by ultrasound and 24% of patients still needed large-volume paracentesis. There was an association between extent of PPG reduction and ascites resolution: Median PPG reduction was 55% of initial PPG in patients with persistence of severe ascites, 58% in patients with ascites detected by ultrasound, and 65% in patients with complete resolution of ascites at 6 weeks after TIPS.
Ascites resolved in 54% of patients with higher PPG reduction (60% or above), compared with 39% of patients with lower PPG reduction (below 60%). Ascites that was detected by ultrasound in another 27% of patients with higher PPG reduction, compared with 31% of patients with lower PPG reduction. In addition, persistent severe ascites was seen in 19% of patients with higher PPG reduction, compared with 30% of patients with lower PPG reduction.
The authors also noted the importance of timing follow-up evaluation: They noted that post-TIPS follow-up is a frequent question and not yet standardized; in this study, they found that, with follow-up at 6 weeks, they could “clearly stratify the course post TIPS” and this could “detect patients at high risk of unstable course of disease.”
PPG reduction of more than 60% after TIPS correlated with resolution of severe ascites 6 weeks after TIPS, the study authors concluded.
“This is one of the first studies that highlights the optimal goal for a portal pressure gradient in the setting of refractory ascites post TIPS procedure,” said Neeral Shah, MD, an associate professor of gastroenterology and hepatology and transplant hepatology specialist at the University of Virginia, Charlottesville.
“It is exciting to see some data from patients examining a question we have always thought to be true but have never quantified,” he said. “As a clinician who refers patients for TIPS, one of my biggest concerns is that significant shunting of blood past liver tissue through a TIPS can lead to the development of confusion.”
Dr. Shah, who wasn’t involved with the study, pointed to ongoing questions about hepatic encephalopathy around TIPS. The study authors didn’t find an issue with this among their study population, and some patients had improvements in their mental status after TIPS.
“This has not been my experience in those patients with hepatic encephalopathy at baseline pre-TIPS,” Dr. Shah said. “This point will need to be clarified further, especially if we are aiming for portal pressure gradients of 10 mm Hg or less in all patients with refractory ascites.”
The study authors declared that the research was conducted without commercial or financial relationships that could be construed as a potential conflict of interest. The authors were supported by the German Research Foundation, the German Federal Ministry of Education and Research, the European Union’s Horizon 2020 research program, and Goethe University Frankfurt. Dr. Shah reported no relevant disclosures.
FROM HEPATOLOGY
Sun Protection Factor Testing: A Call for an In Vitro Method
The sun protection factor (SPF) value indicates to consumers the level of protection that a given sunscreen formulation provides against erythemally effective UV radiation (UVR). 1 In vivo SPF testing, the gold standard for determining SPF, yields highly variable results and can harm human test participants. 2 In vitro SPF testing methodologies have been under development for years but none have (yet) replaced the in vivo test required by national and international regulatory agencies.
Recent European studies have shown strong data to support a highly standardized in vitro method,1 now under development by the International Organization for Standardization (ISO)—potentially to serve as a new SPF determination standard.1,3 Academia and industry should follow this example and actively take steps to develop and validate a suitable replacement for in vivo SPF testing.
In Vivo SPF Testing
The in vivo SPF test involves comparing doses of UVR necessary to induce erythema in human participants with and without sunscreen applied.2 Although this method has long been the standard for SPF determination, it is associated with the following major disadvantages:
- Cost: The in vivo test is expensive.
- Variability: Results of the test are subject to high interlaboratory variability due to the inherent subjectivity of identifying erythema, the variable skin types of human participants, and other laboratory-dependent factors.2 A study found that the average coefficient of variation for SPF values obtained from 3 or 4 laboratories to be 20%—with values exceeding 50% in some cases. With that level of variability, the same sunscreen may be labeled SPF 30, SPF 50, or SPF 50+, thereby posing a health risk to consumers who rely on the accuracy of such claims. In fact, Miksa et al2 concluded that “the largest obstacle to a reliable SPF assessment for consumer health is the in vivo SPF test itself.”
- Ethical concerns: Human participants are intentionally exposed to harmful UVR until sunburn is achieved. For that reason, there have been calls to abandon the practice of in vivo testing.1
Alternatives to In Vivo SPF Testing
There has been international interest in developing in silico and in vitro alternatives to the in vivo SPF test. These options are attractive because they are relatively inexpensive; avoid exposing human participants to harmful UVR; and have the potential to be more accurate and more reproducible than in vivo tests.
In Vitro Protocols—Many such in vitro tests exist; all generally involve applying a layer of sunscreen to an artificial substrate, exposing it to UVR from a solar simulator, and measuring the UVR transmittance through the product and film by spectrophotometry.1 Prior shortcomings of this method have included suboptimal reproducibility, lack of data on substrate and product properties, and lack of demonstrated equivalency to in vivo SPF testing.4
In Silico Protocols—These tests use data on the UV spectra of sunscreen filters, physical characteristics of sunscreen films on skin, and the unique photoinstability of filters to calculate expected UVR transmittance and SPF of sunscreens based on their ingredients.5 Reports have shown high correlation with in vivo values. Results are not subject to random error; reproducibility is theoretically perfect.5
Regulatory Agencies and In Vitro Testing
In the United States, sunscreens are regulated as over-the-counter drugs. In vivo testing is the only US Food and Drug Administration (FDA)–approved method for determining SPF for labeling purposes.1 In a 2007 Proposed Rule and a 2011 Final Rule, the FDA stated that in vitro SPF tests were an inadequate alternative to in vivo tests because of their shortcomings.4,6
Acknowledging the potential benefits of in vitro testing, the FDA wrote that it would consider in vitro alternatives if equivalency to the in vivo test could be proved.6 The agency has not published an official stance on in vitro SPF testing since those statements in 2007 and 2011. Of note, the FDA deems in vitro testing sufficient for making claims of broad-spectrum coverage.4
In contrast to the regulatory scenario in the United States, Europe regulates sunscreens as cosmetics, and the European Union (EU) has banned animal testing of cosmetics,7 which poses a problem for the development of new sunscreens. It is not surprising, therefore, that in 2006 the European Commission (the executive arm of the EU) published a mandate that in vitro SPF testing methods be actively developed due to ethical concerns associated with in vivo methods.8 In 2017, the International Organization for Standardization released specific validation criteria for proposed in vitro tests to facilitate the eventual approval of such methods.1
Progress of In Vitro Methods
In recent years, advances in in vitro SPF testing methods have addressed shortcomings noted previously by the FDA, which has led to notably improved reproducibility of results and correlation with in vivo values, in large part due to strict standardization of protocols,1 such as tight temperature control of samples, a multisubstrate approach, robotic product application to ensure even distribution, and pre-irradiation of sunscreen samples.
With these improvements, a 2018 study demonstrated an in vitro SPF testing methodology that exceeded published ISO validation criteria for emulsion-type products.1 This method was found to have low interlaboratory variability and high correlation with in vivo SPF values (Pearson r=0.88). Importantly, the authors noted that the consistency and reliability of in vitro SPF testing requires broad institution of a single unified method.1
The method described in the 2018 study1 has been accepted by the ISO Technical Committee and is undergoing further development3
Final Thoughts and Future Steps
Recent data confirm the potential viability of in vitro testing as a primary method of determining SPF values.1 Although ISO has moved forward with development of this method, the FDA has been quiet on in vitro SPF testing since 2011.4 The agency has, however, acknowledged the disadvantages of in vivo broad-spectrum testing, including exposure of human participants to harmful UVR and poor interlaboratory reproducibility.6
Given the technical developments and substantial potential benefits of in vitro testing, we believe that it is time for the FDA to revisit this matter. We propose that the FDA take 2 steps toward in vitro testing. First, publish specific validation criteria that would be deemed necessary for approval of such a test, similar to what ISO published in 2017. Second, thoroughly assess new data supporting the viability of available in vitro testing to determine if the FDA’s stated position that in vitro testing is inadequate remains true.
Although these 2 steps will be important to the process, adoption of an in vitro standard will require more than statements from the FDA. Additional funding should be allocated to researchers who are studying in vitro methodologies, and companies that profit from the multibillion-dollar sunscreen industry should be encouraged to invest in the development of more accurate and more ethical alternatives to in vivo SPF testing.
In vitro SPF testing is inexpensive, avoids the moral quandary of intentionally sunburning human participants, and is more reliable than in vivo testing. It is time for the FDA to facilitate the efforts of academia and industry in taking concrete steps toward approval of an in vitro alternative to in vivo SPF testing.
- Pissavini M, Tricaud C, Wiener G, et al. Validation of an in vitro sun protection factor (SPF) method in blinded ring-testing. Int J Cosmet Sci. 2018;40:263-268. doi:10.1111/ics.12459
- Miksa S, Lutz D, Guy C, et al. Sunscreen sun protection factor claim based on in vivo interlaboratory variability. Int J Cosmet Sci. 2016;38:541-549. doi:10.1111/ics.12333
- ISO/CD 23675: Cosmetics—sun protection test methods—in vitro determination of sun protection factor. International Organization for Standardization (ISO). July 25, 2020. Accessed May 17, 2022. https://www.iso.org/standard/76616.html
- US Food and Drug Administration. Labeling and effectiveness testing; sunscreen drug products for over-the-counter human use. Fed Regist. 2011;76(117):35620-35665. Accessed August 9, 2022. https://www.govinfo.gov/content/pkg/FR-2011-06-17/pdf/2011-14766.pdf
- Herzog B, Osterwalder U. Simulation of sunscreen performance. Pure Appl Chem. 2015;87:937-951. doi:10.1515/pac-2015-0401
- US Food and Drug Administration. Sunscreen drug products for over-the-counter human use; proposed amendment of final monograph. Fed Regist. 2007;72(165):49070-49122. Published August 27, 2007. Accessed August 9, 2022. https://www.govinfo.gov/content/pkg/FR-2007-08-27/pdf/07-4131.pdf
- Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products. November 30, 2009. Accessed August 10, 2022. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02009R1223-20190813
- European Commission Recommendation 2006/647/EC. Published September 22, 2006. Accessed August 10, 2022. http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32006H0647
The sun protection factor (SPF) value indicates to consumers the level of protection that a given sunscreen formulation provides against erythemally effective UV radiation (UVR). 1 In vivo SPF testing, the gold standard for determining SPF, yields highly variable results and can harm human test participants. 2 In vitro SPF testing methodologies have been under development for years but none have (yet) replaced the in vivo test required by national and international regulatory agencies.
Recent European studies have shown strong data to support a highly standardized in vitro method,1 now under development by the International Organization for Standardization (ISO)—potentially to serve as a new SPF determination standard.1,3 Academia and industry should follow this example and actively take steps to develop and validate a suitable replacement for in vivo SPF testing.
In Vivo SPF Testing
The in vivo SPF test involves comparing doses of UVR necessary to induce erythema in human participants with and without sunscreen applied.2 Although this method has long been the standard for SPF determination, it is associated with the following major disadvantages:
- Cost: The in vivo test is expensive.
- Variability: Results of the test are subject to high interlaboratory variability due to the inherent subjectivity of identifying erythema, the variable skin types of human participants, and other laboratory-dependent factors.2 A study found that the average coefficient of variation for SPF values obtained from 3 or 4 laboratories to be 20%—with values exceeding 50% in some cases. With that level of variability, the same sunscreen may be labeled SPF 30, SPF 50, or SPF 50+, thereby posing a health risk to consumers who rely on the accuracy of such claims. In fact, Miksa et al2 concluded that “the largest obstacle to a reliable SPF assessment for consumer health is the in vivo SPF test itself.”
- Ethical concerns: Human participants are intentionally exposed to harmful UVR until sunburn is achieved. For that reason, there have been calls to abandon the practice of in vivo testing.1
Alternatives to In Vivo SPF Testing
There has been international interest in developing in silico and in vitro alternatives to the in vivo SPF test. These options are attractive because they are relatively inexpensive; avoid exposing human participants to harmful UVR; and have the potential to be more accurate and more reproducible than in vivo tests.
In Vitro Protocols—Many such in vitro tests exist; all generally involve applying a layer of sunscreen to an artificial substrate, exposing it to UVR from a solar simulator, and measuring the UVR transmittance through the product and film by spectrophotometry.1 Prior shortcomings of this method have included suboptimal reproducibility, lack of data on substrate and product properties, and lack of demonstrated equivalency to in vivo SPF testing.4
In Silico Protocols—These tests use data on the UV spectra of sunscreen filters, physical characteristics of sunscreen films on skin, and the unique photoinstability of filters to calculate expected UVR transmittance and SPF of sunscreens based on their ingredients.5 Reports have shown high correlation with in vivo values. Results are not subject to random error; reproducibility is theoretically perfect.5
Regulatory Agencies and In Vitro Testing
In the United States, sunscreens are regulated as over-the-counter drugs. In vivo testing is the only US Food and Drug Administration (FDA)–approved method for determining SPF for labeling purposes.1 In a 2007 Proposed Rule and a 2011 Final Rule, the FDA stated that in vitro SPF tests were an inadequate alternative to in vivo tests because of their shortcomings.4,6
Acknowledging the potential benefits of in vitro testing, the FDA wrote that it would consider in vitro alternatives if equivalency to the in vivo test could be proved.6 The agency has not published an official stance on in vitro SPF testing since those statements in 2007 and 2011. Of note, the FDA deems in vitro testing sufficient for making claims of broad-spectrum coverage.4
In contrast to the regulatory scenario in the United States, Europe regulates sunscreens as cosmetics, and the European Union (EU) has banned animal testing of cosmetics,7 which poses a problem for the development of new sunscreens. It is not surprising, therefore, that in 2006 the European Commission (the executive arm of the EU) published a mandate that in vitro SPF testing methods be actively developed due to ethical concerns associated with in vivo methods.8 In 2017, the International Organization for Standardization released specific validation criteria for proposed in vitro tests to facilitate the eventual approval of such methods.1
Progress of In Vitro Methods
In recent years, advances in in vitro SPF testing methods have addressed shortcomings noted previously by the FDA, which has led to notably improved reproducibility of results and correlation with in vivo values, in large part due to strict standardization of protocols,1 such as tight temperature control of samples, a multisubstrate approach, robotic product application to ensure even distribution, and pre-irradiation of sunscreen samples.
With these improvements, a 2018 study demonstrated an in vitro SPF testing methodology that exceeded published ISO validation criteria for emulsion-type products.1 This method was found to have low interlaboratory variability and high correlation with in vivo SPF values (Pearson r=0.88). Importantly, the authors noted that the consistency and reliability of in vitro SPF testing requires broad institution of a single unified method.1
The method described in the 2018 study1 has been accepted by the ISO Technical Committee and is undergoing further development3
Final Thoughts and Future Steps
Recent data confirm the potential viability of in vitro testing as a primary method of determining SPF values.1 Although ISO has moved forward with development of this method, the FDA has been quiet on in vitro SPF testing since 2011.4 The agency has, however, acknowledged the disadvantages of in vivo broad-spectrum testing, including exposure of human participants to harmful UVR and poor interlaboratory reproducibility.6
Given the technical developments and substantial potential benefits of in vitro testing, we believe that it is time for the FDA to revisit this matter. We propose that the FDA take 2 steps toward in vitro testing. First, publish specific validation criteria that would be deemed necessary for approval of such a test, similar to what ISO published in 2017. Second, thoroughly assess new data supporting the viability of available in vitro testing to determine if the FDA’s stated position that in vitro testing is inadequate remains true.
Although these 2 steps will be important to the process, adoption of an in vitro standard will require more than statements from the FDA. Additional funding should be allocated to researchers who are studying in vitro methodologies, and companies that profit from the multibillion-dollar sunscreen industry should be encouraged to invest in the development of more accurate and more ethical alternatives to in vivo SPF testing.
In vitro SPF testing is inexpensive, avoids the moral quandary of intentionally sunburning human participants, and is more reliable than in vivo testing. It is time for the FDA to facilitate the efforts of academia and industry in taking concrete steps toward approval of an in vitro alternative to in vivo SPF testing.
The sun protection factor (SPF) value indicates to consumers the level of protection that a given sunscreen formulation provides against erythemally effective UV radiation (UVR). 1 In vivo SPF testing, the gold standard for determining SPF, yields highly variable results and can harm human test participants. 2 In vitro SPF testing methodologies have been under development for years but none have (yet) replaced the in vivo test required by national and international regulatory agencies.
Recent European studies have shown strong data to support a highly standardized in vitro method,1 now under development by the International Organization for Standardization (ISO)—potentially to serve as a new SPF determination standard.1,3 Academia and industry should follow this example and actively take steps to develop and validate a suitable replacement for in vivo SPF testing.
In Vivo SPF Testing
The in vivo SPF test involves comparing doses of UVR necessary to induce erythema in human participants with and without sunscreen applied.2 Although this method has long been the standard for SPF determination, it is associated with the following major disadvantages:
- Cost: The in vivo test is expensive.
- Variability: Results of the test are subject to high interlaboratory variability due to the inherent subjectivity of identifying erythema, the variable skin types of human participants, and other laboratory-dependent factors.2 A study found that the average coefficient of variation for SPF values obtained from 3 or 4 laboratories to be 20%—with values exceeding 50% in some cases. With that level of variability, the same sunscreen may be labeled SPF 30, SPF 50, or SPF 50+, thereby posing a health risk to consumers who rely on the accuracy of such claims. In fact, Miksa et al2 concluded that “the largest obstacle to a reliable SPF assessment for consumer health is the in vivo SPF test itself.”
- Ethical concerns: Human participants are intentionally exposed to harmful UVR until sunburn is achieved. For that reason, there have been calls to abandon the practice of in vivo testing.1
Alternatives to In Vivo SPF Testing
There has been international interest in developing in silico and in vitro alternatives to the in vivo SPF test. These options are attractive because they are relatively inexpensive; avoid exposing human participants to harmful UVR; and have the potential to be more accurate and more reproducible than in vivo tests.
In Vitro Protocols—Many such in vitro tests exist; all generally involve applying a layer of sunscreen to an artificial substrate, exposing it to UVR from a solar simulator, and measuring the UVR transmittance through the product and film by spectrophotometry.1 Prior shortcomings of this method have included suboptimal reproducibility, lack of data on substrate and product properties, and lack of demonstrated equivalency to in vivo SPF testing.4
In Silico Protocols—These tests use data on the UV spectra of sunscreen filters, physical characteristics of sunscreen films on skin, and the unique photoinstability of filters to calculate expected UVR transmittance and SPF of sunscreens based on their ingredients.5 Reports have shown high correlation with in vivo values. Results are not subject to random error; reproducibility is theoretically perfect.5
Regulatory Agencies and In Vitro Testing
In the United States, sunscreens are regulated as over-the-counter drugs. In vivo testing is the only US Food and Drug Administration (FDA)–approved method for determining SPF for labeling purposes.1 In a 2007 Proposed Rule and a 2011 Final Rule, the FDA stated that in vitro SPF tests were an inadequate alternative to in vivo tests because of their shortcomings.4,6
Acknowledging the potential benefits of in vitro testing, the FDA wrote that it would consider in vitro alternatives if equivalency to the in vivo test could be proved.6 The agency has not published an official stance on in vitro SPF testing since those statements in 2007 and 2011. Of note, the FDA deems in vitro testing sufficient for making claims of broad-spectrum coverage.4
In contrast to the regulatory scenario in the United States, Europe regulates sunscreens as cosmetics, and the European Union (EU) has banned animal testing of cosmetics,7 which poses a problem for the development of new sunscreens. It is not surprising, therefore, that in 2006 the European Commission (the executive arm of the EU) published a mandate that in vitro SPF testing methods be actively developed due to ethical concerns associated with in vivo methods.8 In 2017, the International Organization for Standardization released specific validation criteria for proposed in vitro tests to facilitate the eventual approval of such methods.1
Progress of In Vitro Methods
In recent years, advances in in vitro SPF testing methods have addressed shortcomings noted previously by the FDA, which has led to notably improved reproducibility of results and correlation with in vivo values, in large part due to strict standardization of protocols,1 such as tight temperature control of samples, a multisubstrate approach, robotic product application to ensure even distribution, and pre-irradiation of sunscreen samples.
With these improvements, a 2018 study demonstrated an in vitro SPF testing methodology that exceeded published ISO validation criteria for emulsion-type products.1 This method was found to have low interlaboratory variability and high correlation with in vivo SPF values (Pearson r=0.88). Importantly, the authors noted that the consistency and reliability of in vitro SPF testing requires broad institution of a single unified method.1
The method described in the 2018 study1 has been accepted by the ISO Technical Committee and is undergoing further development3
Final Thoughts and Future Steps
Recent data confirm the potential viability of in vitro testing as a primary method of determining SPF values.1 Although ISO has moved forward with development of this method, the FDA has been quiet on in vitro SPF testing since 2011.4 The agency has, however, acknowledged the disadvantages of in vivo broad-spectrum testing, including exposure of human participants to harmful UVR and poor interlaboratory reproducibility.6
Given the technical developments and substantial potential benefits of in vitro testing, we believe that it is time for the FDA to revisit this matter. We propose that the FDA take 2 steps toward in vitro testing. First, publish specific validation criteria that would be deemed necessary for approval of such a test, similar to what ISO published in 2017. Second, thoroughly assess new data supporting the viability of available in vitro testing to determine if the FDA’s stated position that in vitro testing is inadequate remains true.
Although these 2 steps will be important to the process, adoption of an in vitro standard will require more than statements from the FDA. Additional funding should be allocated to researchers who are studying in vitro methodologies, and companies that profit from the multibillion-dollar sunscreen industry should be encouraged to invest in the development of more accurate and more ethical alternatives to in vivo SPF testing.
In vitro SPF testing is inexpensive, avoids the moral quandary of intentionally sunburning human participants, and is more reliable than in vivo testing. It is time for the FDA to facilitate the efforts of academia and industry in taking concrete steps toward approval of an in vitro alternative to in vivo SPF testing.
- Pissavini M, Tricaud C, Wiener G, et al. Validation of an in vitro sun protection factor (SPF) method in blinded ring-testing. Int J Cosmet Sci. 2018;40:263-268. doi:10.1111/ics.12459
- Miksa S, Lutz D, Guy C, et al. Sunscreen sun protection factor claim based on in vivo interlaboratory variability. Int J Cosmet Sci. 2016;38:541-549. doi:10.1111/ics.12333
- ISO/CD 23675: Cosmetics—sun protection test methods—in vitro determination of sun protection factor. International Organization for Standardization (ISO). July 25, 2020. Accessed May 17, 2022. https://www.iso.org/standard/76616.html
- US Food and Drug Administration. Labeling and effectiveness testing; sunscreen drug products for over-the-counter human use. Fed Regist. 2011;76(117):35620-35665. Accessed August 9, 2022. https://www.govinfo.gov/content/pkg/FR-2011-06-17/pdf/2011-14766.pdf
- Herzog B, Osterwalder U. Simulation of sunscreen performance. Pure Appl Chem. 2015;87:937-951. doi:10.1515/pac-2015-0401
- US Food and Drug Administration. Sunscreen drug products for over-the-counter human use; proposed amendment of final monograph. Fed Regist. 2007;72(165):49070-49122. Published August 27, 2007. Accessed August 9, 2022. https://www.govinfo.gov/content/pkg/FR-2007-08-27/pdf/07-4131.pdf
- Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products. November 30, 2009. Accessed August 10, 2022. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02009R1223-20190813
- European Commission Recommendation 2006/647/EC. Published September 22, 2006. Accessed August 10, 2022. http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32006H0647
- Pissavini M, Tricaud C, Wiener G, et al. Validation of an in vitro sun protection factor (SPF) method in blinded ring-testing. Int J Cosmet Sci. 2018;40:263-268. doi:10.1111/ics.12459
- Miksa S, Lutz D, Guy C, et al. Sunscreen sun protection factor claim based on in vivo interlaboratory variability. Int J Cosmet Sci. 2016;38:541-549. doi:10.1111/ics.12333
- ISO/CD 23675: Cosmetics—sun protection test methods—in vitro determination of sun protection factor. International Organization for Standardization (ISO). July 25, 2020. Accessed May 17, 2022. https://www.iso.org/standard/76616.html
- US Food and Drug Administration. Labeling and effectiveness testing; sunscreen drug products for over-the-counter human use. Fed Regist. 2011;76(117):35620-35665. Accessed August 9, 2022. https://www.govinfo.gov/content/pkg/FR-2011-06-17/pdf/2011-14766.pdf
- Herzog B, Osterwalder U. Simulation of sunscreen performance. Pure Appl Chem. 2015;87:937-951. doi:10.1515/pac-2015-0401
- US Food and Drug Administration. Sunscreen drug products for over-the-counter human use; proposed amendment of final monograph. Fed Regist. 2007;72(165):49070-49122. Published August 27, 2007. Accessed August 9, 2022. https://www.govinfo.gov/content/pkg/FR-2007-08-27/pdf/07-4131.pdf
- Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products. November 30, 2009. Accessed August 10, 2022. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02009R1223-20190813
- European Commission Recommendation 2006/647/EC. Published September 22, 2006. Accessed August 10, 2022. http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32006H0647
Practice Points
- The methodology for determining sun protection factor (SPF) that currently is accepted by the US Food and Drug Administration is an expensive and imprecise in vivo test that exposes human participants to harmful UV radiation.
- In vitro tests for determining SPF may be viable alternatives to the current in vivo gold standard.
- Researchers and the sunscreen industry should actively develop these in vitro methodologies to adopt a more accurate and less harmful test for SPF.
Intralesional Human Papillomavirus Vaccine Therapy for Recalcitrant Plantar Wart Triggers Gout Flare
To the Editor:
There is increasing evidence supporting the use of the human papillomavirus (HPV) vaccine in the treatment of recalcitrant common warts.1 We describe a potential complication associated with HPV vaccine treatment of warts that would be of interest to dermatologists.
A 70-year-old woman presented with a plantar wart measuring 6 mm in diameter at the base of the right hallux of 5 years’ duration. Prior failed therapies for wart removal included multiple paring treatments, cryotherapy, and topical salicylic acid 40% to 60%. The patient had no notable comorbidities; no history of gout; and no known risk factors for gout, such as hypertension, renal insufficiency, diuretic use, obesity, family history, or trauma.
Prior reports cited effective treatment of recalcitrant warts with recombinant HPV vaccines, both intralesionally1 and intramuscularly.2,3 With this knowledge in mind, we administered an intralesional injection with 0.1-mL recombinant HPV 9-valent vaccine to the patient’s plantar wart. Gradual erythema and swelling of the right first metatarsophalangeal joint developed over the next 7 days. Synovial fluid analysis demonstrated negatively birefringent crystals. The patient commenced treatment with colchicine and indomethacin and improved over the next 5 days. The wart resolved 3 months later and required no further treatment.
Prophylactic quadrivalent HPV vaccines have shown efficacy in treating HPV-associated precancerous and cancerous lesions.4 Case reports have suggested that HPV vaccines may be an effective treatment option for recalcitrant warts,1-3,5 especially in cases that do not respond to traditional treatment. It is possible that the mechanism of wart treatment involves overlap in the antigenic epitopes of the HPV types targeted by the vaccine vs the HPV types responsible for causing warts.2 Papillomaviruslike particles, based on the L1 capsid protein, can induce a specific CD8+ activation signal, leading to a vaccine-induced cytotoxic T-cell response that targets the wart cells with HPV-like antigens.6 The HPV vaccine contains aluminium, which has been shown to activate NLRP3 inflammasome,5 which may trigger gout by increasing monosodium urate crystal deposition via IL-1β production.7 This may lead to an increased risk for gout flares, an adverse effect of the HPV vaccine. This finding is supported by other studies of aluminium-containing vaccines that show an association with gout.6 It is noted that these vaccines are mostly delivered intramuscularly or subcutaneously in some cases.
We reported a case of gout triggered by intralesional HPV vaccine treatment of warts. It is unclear whether the gout was induced by the vaccine itself or whether it was due to trauma caused by the intralesional injection near the joint space. Based on our findings, we recommend that patients receiving intralesional injections for wart treatment be advised of this potential adverse effect, especially if they have risk factors for gout or have a history of gout.
- Nofal A, Marei A, Ibrahim AM et al. Intralesional versus intramuscular bivalent human papillomavirus vaccine in the treatment of recalcitrant common warts. J Am Acad Dermatol. 2020;82:94-100.
- Venugopal SS, Murrell DF. Recalcitrant cutaneous warts treated with recombinant quadrivalent human papillomavirus vaccine (types 6, 11, 16, and 18) in a developmentally delayed, 31-year-old white man. Arch Dermatol. 2010;146:475-477.
- Daniel BS, Murrell DF. Complete resolution of chronic multiple verruca vulgaris treated with quadrivalent human papillomavirus vaccine. JAMA Dermatol. 2013;149:370-372.
- Kenter GG, Welters MJ, Valentijn AR, et al. Vaccination against HPV-16 oncoproteins for vulvar intraepithelial neoplasia. N Engl J Med. 2009;361:1838-1847.
- Eisenbarth SC, Colegio OR, O’Connor W, et al. Crucial role for the NALP3 inflammasome in the immunostimulatory properties of aluminium adjuvants. Nature. 2008;453:1122-1166.
- Bellone S, El-Sahwi K, Cocco E, et al. Human papillomavirus type 16 (HPV-16) virus-like particle L1-specific CD8+ cytotoxic T lymphocytes (CTLs) are equally effective as E7-specific CD8+ CTLs in killing autologous HPV-16-positive tumor cells in cervical cancer patients: implications for L1 dendritic cell-based therapeutic vaccines. J Virol. 2009;83:6779-6789.
- Yokose C, McCormick N, Chen C, et al. Risk of gout flares after vaccination: a prospective case cross-over study. Ann Rheum Dis. 2019;78:1601-1604.
To the Editor:
There is increasing evidence supporting the use of the human papillomavirus (HPV) vaccine in the treatment of recalcitrant common warts.1 We describe a potential complication associated with HPV vaccine treatment of warts that would be of interest to dermatologists.
A 70-year-old woman presented with a plantar wart measuring 6 mm in diameter at the base of the right hallux of 5 years’ duration. Prior failed therapies for wart removal included multiple paring treatments, cryotherapy, and topical salicylic acid 40% to 60%. The patient had no notable comorbidities; no history of gout; and no known risk factors for gout, such as hypertension, renal insufficiency, diuretic use, obesity, family history, or trauma.
Prior reports cited effective treatment of recalcitrant warts with recombinant HPV vaccines, both intralesionally1 and intramuscularly.2,3 With this knowledge in mind, we administered an intralesional injection with 0.1-mL recombinant HPV 9-valent vaccine to the patient’s plantar wart. Gradual erythema and swelling of the right first metatarsophalangeal joint developed over the next 7 days. Synovial fluid analysis demonstrated negatively birefringent crystals. The patient commenced treatment with colchicine and indomethacin and improved over the next 5 days. The wart resolved 3 months later and required no further treatment.
Prophylactic quadrivalent HPV vaccines have shown efficacy in treating HPV-associated precancerous and cancerous lesions.4 Case reports have suggested that HPV vaccines may be an effective treatment option for recalcitrant warts,1-3,5 especially in cases that do not respond to traditional treatment. It is possible that the mechanism of wart treatment involves overlap in the antigenic epitopes of the HPV types targeted by the vaccine vs the HPV types responsible for causing warts.2 Papillomaviruslike particles, based on the L1 capsid protein, can induce a specific CD8+ activation signal, leading to a vaccine-induced cytotoxic T-cell response that targets the wart cells with HPV-like antigens.6 The HPV vaccine contains aluminium, which has been shown to activate NLRP3 inflammasome,5 which may trigger gout by increasing monosodium urate crystal deposition via IL-1β production.7 This may lead to an increased risk for gout flares, an adverse effect of the HPV vaccine. This finding is supported by other studies of aluminium-containing vaccines that show an association with gout.6 It is noted that these vaccines are mostly delivered intramuscularly or subcutaneously in some cases.
We reported a case of gout triggered by intralesional HPV vaccine treatment of warts. It is unclear whether the gout was induced by the vaccine itself or whether it was due to trauma caused by the intralesional injection near the joint space. Based on our findings, we recommend that patients receiving intralesional injections for wart treatment be advised of this potential adverse effect, especially if they have risk factors for gout or have a history of gout.
To the Editor:
There is increasing evidence supporting the use of the human papillomavirus (HPV) vaccine in the treatment of recalcitrant common warts.1 We describe a potential complication associated with HPV vaccine treatment of warts that would be of interest to dermatologists.
A 70-year-old woman presented with a plantar wart measuring 6 mm in diameter at the base of the right hallux of 5 years’ duration. Prior failed therapies for wart removal included multiple paring treatments, cryotherapy, and topical salicylic acid 40% to 60%. The patient had no notable comorbidities; no history of gout; and no known risk factors for gout, such as hypertension, renal insufficiency, diuretic use, obesity, family history, or trauma.
Prior reports cited effective treatment of recalcitrant warts with recombinant HPV vaccines, both intralesionally1 and intramuscularly.2,3 With this knowledge in mind, we administered an intralesional injection with 0.1-mL recombinant HPV 9-valent vaccine to the patient’s plantar wart. Gradual erythema and swelling of the right first metatarsophalangeal joint developed over the next 7 days. Synovial fluid analysis demonstrated negatively birefringent crystals. The patient commenced treatment with colchicine and indomethacin and improved over the next 5 days. The wart resolved 3 months later and required no further treatment.
Prophylactic quadrivalent HPV vaccines have shown efficacy in treating HPV-associated precancerous and cancerous lesions.4 Case reports have suggested that HPV vaccines may be an effective treatment option for recalcitrant warts,1-3,5 especially in cases that do not respond to traditional treatment. It is possible that the mechanism of wart treatment involves overlap in the antigenic epitopes of the HPV types targeted by the vaccine vs the HPV types responsible for causing warts.2 Papillomaviruslike particles, based on the L1 capsid protein, can induce a specific CD8+ activation signal, leading to a vaccine-induced cytotoxic T-cell response that targets the wart cells with HPV-like antigens.6 The HPV vaccine contains aluminium, which has been shown to activate NLRP3 inflammasome,5 which may trigger gout by increasing monosodium urate crystal deposition via IL-1β production.7 This may lead to an increased risk for gout flares, an adverse effect of the HPV vaccine. This finding is supported by other studies of aluminium-containing vaccines that show an association with gout.6 It is noted that these vaccines are mostly delivered intramuscularly or subcutaneously in some cases.
We reported a case of gout triggered by intralesional HPV vaccine treatment of warts. It is unclear whether the gout was induced by the vaccine itself or whether it was due to trauma caused by the intralesional injection near the joint space. Based on our findings, we recommend that patients receiving intralesional injections for wart treatment be advised of this potential adverse effect, especially if they have risk factors for gout or have a history of gout.
- Nofal A, Marei A, Ibrahim AM et al. Intralesional versus intramuscular bivalent human papillomavirus vaccine in the treatment of recalcitrant common warts. J Am Acad Dermatol. 2020;82:94-100.
- Venugopal SS, Murrell DF. Recalcitrant cutaneous warts treated with recombinant quadrivalent human papillomavirus vaccine (types 6, 11, 16, and 18) in a developmentally delayed, 31-year-old white man. Arch Dermatol. 2010;146:475-477.
- Daniel BS, Murrell DF. Complete resolution of chronic multiple verruca vulgaris treated with quadrivalent human papillomavirus vaccine. JAMA Dermatol. 2013;149:370-372.
- Kenter GG, Welters MJ, Valentijn AR, et al. Vaccination against HPV-16 oncoproteins for vulvar intraepithelial neoplasia. N Engl J Med. 2009;361:1838-1847.
- Eisenbarth SC, Colegio OR, O’Connor W, et al. Crucial role for the NALP3 inflammasome in the immunostimulatory properties of aluminium adjuvants. Nature. 2008;453:1122-1166.
- Bellone S, El-Sahwi K, Cocco E, et al. Human papillomavirus type 16 (HPV-16) virus-like particle L1-specific CD8+ cytotoxic T lymphocytes (CTLs) are equally effective as E7-specific CD8+ CTLs in killing autologous HPV-16-positive tumor cells in cervical cancer patients: implications for L1 dendritic cell-based therapeutic vaccines. J Virol. 2009;83:6779-6789.
- Yokose C, McCormick N, Chen C, et al. Risk of gout flares after vaccination: a prospective case cross-over study. Ann Rheum Dis. 2019;78:1601-1604.
- Nofal A, Marei A, Ibrahim AM et al. Intralesional versus intramuscular bivalent human papillomavirus vaccine in the treatment of recalcitrant common warts. J Am Acad Dermatol. 2020;82:94-100.
- Venugopal SS, Murrell DF. Recalcitrant cutaneous warts treated with recombinant quadrivalent human papillomavirus vaccine (types 6, 11, 16, and 18) in a developmentally delayed, 31-year-old white man. Arch Dermatol. 2010;146:475-477.
- Daniel BS, Murrell DF. Complete resolution of chronic multiple verruca vulgaris treated with quadrivalent human papillomavirus vaccine. JAMA Dermatol. 2013;149:370-372.
- Kenter GG, Welters MJ, Valentijn AR, et al. Vaccination against HPV-16 oncoproteins for vulvar intraepithelial neoplasia. N Engl J Med. 2009;361:1838-1847.
- Eisenbarth SC, Colegio OR, O’Connor W, et al. Crucial role for the NALP3 inflammasome in the immunostimulatory properties of aluminium adjuvants. Nature. 2008;453:1122-1166.
- Bellone S, El-Sahwi K, Cocco E, et al. Human papillomavirus type 16 (HPV-16) virus-like particle L1-specific CD8+ cytotoxic T lymphocytes (CTLs) are equally effective as E7-specific CD8+ CTLs in killing autologous HPV-16-positive tumor cells in cervical cancer patients: implications for L1 dendritic cell-based therapeutic vaccines. J Virol. 2009;83:6779-6789.
- Yokose C, McCormick N, Chen C, et al. Risk of gout flares after vaccination: a prospective case cross-over study. Ann Rheum Dis. 2019;78:1601-1604.
Practice Points
- Human papillomavirus (HPV) vaccines are increasingly used for recalcitrant warts.
- We describe an unreported adverse effect of gout flare following HPV vaccine treatment of plantar wart.
Asking patients about their gender identity: ‘Normalize’ the discussion and other recommendations
PORTLAND, ORE. –
“From the patient perspective, there’s nothing more awkward than having an awkward provider asking awkward questions,” Howa Yeung, MD, MSc, assistant professor of dermatology at Emory University, Atlanta, said at the annual meeting of the Pacific Dermatologic Association.
In 2014, Sean Cahill, PhD, and Harvey Makadon, MD, published an article recommending the inclusion of sexual orientation and gender identity questions in electronic medical records, a practice that Dr. Yeung characterized as “the most patient-centered way to collect sexual orientation and gender identity information. The most important thing is to ask routinely on an intake form where they fill it out themselves. All electronic medical records have the capacity to do so.”
On the other hand, when asking new patients about their sexual orientation and gender identity in person, it’s important to normalize the discussion and ask in an inclusive way, said Dr. Yeung, who was the lead author on published recommendations on dermatologic care for LGBTQ persons published in the Journal of the American Academy of Dermatology. “For example, I always say, ‘I’m Howa Yeung. I use him pronouns,’ ” he said. “ ‘How should I address you?’ Then they will tell you. Allow people to lead the way.”
Other suggested tips in the JAAD article include to avoid using terms such as “sir” or “miss” until the patient’s gender identify is ascertained. Instead, use gender-neutral terms such as “they” or “the patient” when referring to new patients. Do not use the pronoun “it.” If a patient’s name does not match a name in the medical record, ask, “What is the name on your insurance/records?” and avoid assuming gender(s) of a patient’s partner or parents. Instead, consider asking, “Who did you bring with you today?” “Are you in a relationship?” “What are the names of your parents?”
Normalizing questions about the patient’s sexual history is also key. “I tell patients that I routinely ask about sexual history for patients with similar skin issues because it helps me provide the best care for them,” Dr. Yeung said. “I also discuss confidentiality and documentation.”
Dr. Yeung reported having no relevant disclosures.
PORTLAND, ORE. –
“From the patient perspective, there’s nothing more awkward than having an awkward provider asking awkward questions,” Howa Yeung, MD, MSc, assistant professor of dermatology at Emory University, Atlanta, said at the annual meeting of the Pacific Dermatologic Association.
In 2014, Sean Cahill, PhD, and Harvey Makadon, MD, published an article recommending the inclusion of sexual orientation and gender identity questions in electronic medical records, a practice that Dr. Yeung characterized as “the most patient-centered way to collect sexual orientation and gender identity information. The most important thing is to ask routinely on an intake form where they fill it out themselves. All electronic medical records have the capacity to do so.”
On the other hand, when asking new patients about their sexual orientation and gender identity in person, it’s important to normalize the discussion and ask in an inclusive way, said Dr. Yeung, who was the lead author on published recommendations on dermatologic care for LGBTQ persons published in the Journal of the American Academy of Dermatology. “For example, I always say, ‘I’m Howa Yeung. I use him pronouns,’ ” he said. “ ‘How should I address you?’ Then they will tell you. Allow people to lead the way.”
Other suggested tips in the JAAD article include to avoid using terms such as “sir” or “miss” until the patient’s gender identify is ascertained. Instead, use gender-neutral terms such as “they” or “the patient” when referring to new patients. Do not use the pronoun “it.” If a patient’s name does not match a name in the medical record, ask, “What is the name on your insurance/records?” and avoid assuming gender(s) of a patient’s partner or parents. Instead, consider asking, “Who did you bring with you today?” “Are you in a relationship?” “What are the names of your parents?”
Normalizing questions about the patient’s sexual history is also key. “I tell patients that I routinely ask about sexual history for patients with similar skin issues because it helps me provide the best care for them,” Dr. Yeung said. “I also discuss confidentiality and documentation.”
Dr. Yeung reported having no relevant disclosures.
PORTLAND, ORE. –
“From the patient perspective, there’s nothing more awkward than having an awkward provider asking awkward questions,” Howa Yeung, MD, MSc, assistant professor of dermatology at Emory University, Atlanta, said at the annual meeting of the Pacific Dermatologic Association.
In 2014, Sean Cahill, PhD, and Harvey Makadon, MD, published an article recommending the inclusion of sexual orientation and gender identity questions in electronic medical records, a practice that Dr. Yeung characterized as “the most patient-centered way to collect sexual orientation and gender identity information. The most important thing is to ask routinely on an intake form where they fill it out themselves. All electronic medical records have the capacity to do so.”
On the other hand, when asking new patients about their sexual orientation and gender identity in person, it’s important to normalize the discussion and ask in an inclusive way, said Dr. Yeung, who was the lead author on published recommendations on dermatologic care for LGBTQ persons published in the Journal of the American Academy of Dermatology. “For example, I always say, ‘I’m Howa Yeung. I use him pronouns,’ ” he said. “ ‘How should I address you?’ Then they will tell you. Allow people to lead the way.”
Other suggested tips in the JAAD article include to avoid using terms such as “sir” or “miss” until the patient’s gender identify is ascertained. Instead, use gender-neutral terms such as “they” or “the patient” when referring to new patients. Do not use the pronoun “it.” If a patient’s name does not match a name in the medical record, ask, “What is the name on your insurance/records?” and avoid assuming gender(s) of a patient’s partner or parents. Instead, consider asking, “Who did you bring with you today?” “Are you in a relationship?” “What are the names of your parents?”
Normalizing questions about the patient’s sexual history is also key. “I tell patients that I routinely ask about sexual history for patients with similar skin issues because it helps me provide the best care for them,” Dr. Yeung said. “I also discuss confidentiality and documentation.”
Dr. Yeung reported having no relevant disclosures.
AT PDA 2022
AML’s seasonal peak suggests viral or environmental etiology
Most diagnoses of acute myeloid leukemia (AML) are made during January. This finding strongly implies that seasonal factors, such as infectious agents or environmental triggers, influence the development or proliferation of the disease, which points to prevention opportunities. This was the conclusion of an international study led by a team from the Jiménez Díaz Foundation University Hospital Health Research Institute (IIS-FJD) in Madrid, in collaboration with colleagues from the University of Bristol, England. Their work was published in the British Journal of Haematology.
The study’s aim was to investigate the potential seasonal and long-term trends in AML diagnosis in an overall population and in subgroups according to sex and age. To do so, the researchers examined 26,472 cases of AML diagnosed in Spain between 2004 and 2015. They found seasonality in the diagnosis of this type of leukemia. This “could point to there being an underlying seasonal etiology at play,” noted one of the main authors of the study, Juan Manuel Alonso, MD, a physician in the IIS-FJD’s department of hematology and hemotherapy.
“The environmental triggers involved could be radiation, pollution, allergens, or infectious agents like viruses. We’re leaning toward viruses, because there are already distinct solid tumor and hematologic cancers that are caused by them and because, in the winter months, there’s an increased incidence of cancers due to viral infections,” Dr. Alonso said in an interview. “The etiological mechanism should be different from that exerted by chronic viral pressure, because here we’re dealing with an acute and aggressive disease that probably needs a short incubation period.”
Various hypotheses
In an interview, David Martínez, MD, a hematologist at La Fe University Hospital in Valencia, Spain, described the research as “an extremely well done and much-discussed study on AML, a disease that appears to be diagnosed more frequently at a certain time of year – namely, January.
“There’s no clear explanation for this finding,” Dr. Martínez said. “Several possible reasons have been put forward and are being talked about. The one that seems to hold the most water is the hypothesis that infectious agents and environmental factors may have a greater influence. This is because the idea that they’re involved in neoplastic diseases is nothing new. In fact, there are a lot of publications and a good amount of scientific evidence that link viral infections and environmental factors with the development of oncologic diseases.”
AML is a rare disease yet is responsible for many cancer-related deaths. Mutations that cause AML can occur due to an inherited mutant gene or exposure to certain carcinogens, such as chemotherapy, radiotherapy, ionizing radiation, tobacco, and benzene. These findings are broadly similar to those of a large U.S.-based study by Calip et al., who found a peak of adult AML diagnoses during December and January from 1992 to 2008. Previous smaller studies have provided conflicting evidence, likely due to lower power or to the use of less advanced statistical approaches.
Seasonal factors involved?
Demonstration of seasonal variation in the occurrence of AML would, firstly, provide supportive evidence of etiology by seasonal factors, such as infectious agents or environmental factors, and, secondly, focus research onto the etiologic role of such factors.
The current study used population-based data on cases of AML occurring in Spain from a nationwide hospital discharge registry for the years 2004 to 2015. “This is, to our knowledge, the largest study aimed at investigating the potential seasonal and long-term trends in AML incidence in an overall population and in subgroups according to sex and age while employing novel statistical models with serial dependence for discrete-valued time series,” wrote the researchers.
They extracted information from the register of each case about the date of admission, discharge date, the anonymous identifier for each patient, International Classification of Diseases (ICD)–9 codes, sex, and date of birth, from which they derived age groups as described for the at-risk population. For patients hospitalized on more than one occasion, only the record corresponding to their first diagnosis of AML was selected.
AML cases per month were standardized to months of equal length.
Age/sex-standardized monthly incidence rates of AML were calculated using the census of Spanish population in 2010 as a “standard” population. Age-standardized and sex-standardized monthly incidence rates of AML were calculated.
Nine separate time-series decompositions were performed as an initial exploratory analysis on the monthly incidence rates of AML using data for all cases and data for each sex and age group. Nine separate Poisson generalized linear autoregressive moving average (GLARMA) models were fitted to evaluate the temporal dynamics in AML incidence using data for all cases, and data for each sex and age group.
Long-term trend
A total of 26,472 patients with a first diagnosis of active AML were hospitalized in Spain and registered at the country’s Minimum Basic Data Set (CMBD) during 2004-2015. In the end, there were 26,475 patients in the study population; a greater proportion of cases were male (56.0%), and the median age at diagnosis was 67 years.
Seasonal and trend decomposition using Loess decomposition of the incidence rates observed in the overall population exhibited seasonal fluctuation with a peak in January. A slight upward trend was apparent from visual inspection with an upturn in early 2005 and a downturn at the end of 2013. As for the differences by sex groups and age groups, Dr. Alonso said, “For both sexes and in age groups 5-19, 20-49, and 50-64 years, we found that the results were identical to those found in the overall population.”
The final model included an upward linear long-term trend, as well as the variables monthly seasonality and December 2015. The estimated monthly long-term trend implies that the monthly incidence rates of AML diagnoses annually increased by 0.4% (95% confidence interval [CI], 0.2%-0.6%; P = .0011), given that the other covariates are held constant.
January displayed the highest incidence rate of AML, with a minimum average difference of 7%, when compared with February (95% CI, 2%-12%; P = .0143) and a maximum average difference of 16%, compared with November (95% CI, 11%-21%; P < .0001) and August (95% CI, 10%-21%; P < .0001).
The incidence rate of AML for December 2015 was 0.43 (95% CI, 0.34-0.54; P < .0001) times the average incidence rate for the rest of the study period.
Potential role of viruses
“We have to keep in mind that infectious agents (viral infections) and environmental factors (allergens) don’t disappear in the warmer months,” Dr. Martínez added. “There are just other viruses and different factors. We don’t know the role or the weight that each one of the factors has, either individually or specifically, in the development of AML. In addition, we know that AML is a very heterogeneous disease and that various factors, including genetic ones, can be involved in its etiopathogenesis.”
With respect to the stem cell theory in this leukemia, Dr. Alonso emphasized that, “in theory, the virus could fit into it with no problem. That said, any other environmental agent could also produce the described phenomenon where the rapid proliferation of quiescent leukemic stem cells is stimulated, thereby hastening the diagnosis.”
“Should the etiological factor be found,” Dr. Martínez noted, “we can try to reduce exposure and thereby decrease the incidence of AML. On the other hand, discovering how the environmental factor stimulates the proliferation of quiescent leukemic [stem] cells could enhance our knowledge about the regulation of that.”
As to whether there is evidence for the involvement of infections in other hematologic malignancies, Dr. Martínez reported, “This has already been seen. And this study shows other examples (Epstein-Barr virus and human T-cell lymphotropic virus type 1 with lymphomas), and there could also be Helicobacter pylori and lymphomas.”
Outside of hematology, human papillomavirus has been associated with cervical cancer, tobacco with lung cancer, sun with skin cancer, and diet with the development of some solid neoplasms.
“The study speaks about the concept of a latency period. To accept the idea that a factor or virus that’s more prevalent in winter produces, on its own, AML in a few weeks or months means accepting the idea of a very short latency period – something that’s not usually the case. For that, another explanation is given: An abnormal immune response or that a seasonal infectious agent can be capable of promoting leukemogenesis. These are also hypotheses to be explored in the future,” suggested Dr. Martínez.
New research network
Several potential limitations of this study should be considered. One limitation is that AML cases were obtained from the CMBD registry as defined by ICD-9, and no other AML classifications were available. Another limitation is that information on the date of onset of clinical symptoms was not available for analysis. In addition, a further limitation related to the source of their data may have led the researchers to underestimate the incidence rates of AML in older patients, as only hospitalized patients were captured in their study.
As for continuing the research, the results make it necessary to carry out complementary epidemiologic studies that will examine the association between seasonal risk factors and the increased diagnosis of AML during winter months.
To go forward, the first step would be to secure funding. For this purpose, a network is being put together featuring collaborators from other world-renowned research groups that are at the top of their respective disciplines. Through this network, they hope to be able to apply together for public research grants from countries in Europe and elsewhere as well as to establish collaborations with various companies in the private sector.
“This could open up new therapeutic avenues in the future, as we could try to force leukemic stem cells to divide, thereby reducing the resistance that the standard treatments usually demonstrate,” Dr. Alonso concluded.
Dr. Alonso received research funding from Incyte, Pfizer International, and Astellas Pharma outside the present work. Dr. Martínez disclosed no relevant financial relationships.
This article was translated from the Medscape Spanish edition. A version of the article appeared on Medscape.com.
Most diagnoses of acute myeloid leukemia (AML) are made during January. This finding strongly implies that seasonal factors, such as infectious agents or environmental triggers, influence the development or proliferation of the disease, which points to prevention opportunities. This was the conclusion of an international study led by a team from the Jiménez Díaz Foundation University Hospital Health Research Institute (IIS-FJD) in Madrid, in collaboration with colleagues from the University of Bristol, England. Their work was published in the British Journal of Haematology.
The study’s aim was to investigate the potential seasonal and long-term trends in AML diagnosis in an overall population and in subgroups according to sex and age. To do so, the researchers examined 26,472 cases of AML diagnosed in Spain between 2004 and 2015. They found seasonality in the diagnosis of this type of leukemia. This “could point to there being an underlying seasonal etiology at play,” noted one of the main authors of the study, Juan Manuel Alonso, MD, a physician in the IIS-FJD’s department of hematology and hemotherapy.
“The environmental triggers involved could be radiation, pollution, allergens, or infectious agents like viruses. We’re leaning toward viruses, because there are already distinct solid tumor and hematologic cancers that are caused by them and because, in the winter months, there’s an increased incidence of cancers due to viral infections,” Dr. Alonso said in an interview. “The etiological mechanism should be different from that exerted by chronic viral pressure, because here we’re dealing with an acute and aggressive disease that probably needs a short incubation period.”
Various hypotheses
In an interview, David Martínez, MD, a hematologist at La Fe University Hospital in Valencia, Spain, described the research as “an extremely well done and much-discussed study on AML, a disease that appears to be diagnosed more frequently at a certain time of year – namely, January.
“There’s no clear explanation for this finding,” Dr. Martínez said. “Several possible reasons have been put forward and are being talked about. The one that seems to hold the most water is the hypothesis that infectious agents and environmental factors may have a greater influence. This is because the idea that they’re involved in neoplastic diseases is nothing new. In fact, there are a lot of publications and a good amount of scientific evidence that link viral infections and environmental factors with the development of oncologic diseases.”
AML is a rare disease yet is responsible for many cancer-related deaths. Mutations that cause AML can occur due to an inherited mutant gene or exposure to certain carcinogens, such as chemotherapy, radiotherapy, ionizing radiation, tobacco, and benzene. These findings are broadly similar to those of a large U.S.-based study by Calip et al., who found a peak of adult AML diagnoses during December and January from 1992 to 2008. Previous smaller studies have provided conflicting evidence, likely due to lower power or to the use of less advanced statistical approaches.
Seasonal factors involved?
Demonstration of seasonal variation in the occurrence of AML would, firstly, provide supportive evidence of etiology by seasonal factors, such as infectious agents or environmental factors, and, secondly, focus research onto the etiologic role of such factors.
The current study used population-based data on cases of AML occurring in Spain from a nationwide hospital discharge registry for the years 2004 to 2015. “This is, to our knowledge, the largest study aimed at investigating the potential seasonal and long-term trends in AML incidence in an overall population and in subgroups according to sex and age while employing novel statistical models with serial dependence for discrete-valued time series,” wrote the researchers.
They extracted information from the register of each case about the date of admission, discharge date, the anonymous identifier for each patient, International Classification of Diseases (ICD)–9 codes, sex, and date of birth, from which they derived age groups as described for the at-risk population. For patients hospitalized on more than one occasion, only the record corresponding to their first diagnosis of AML was selected.
AML cases per month were standardized to months of equal length.
Age/sex-standardized monthly incidence rates of AML were calculated using the census of Spanish population in 2010 as a “standard” population. Age-standardized and sex-standardized monthly incidence rates of AML were calculated.
Nine separate time-series decompositions were performed as an initial exploratory analysis on the monthly incidence rates of AML using data for all cases and data for each sex and age group. Nine separate Poisson generalized linear autoregressive moving average (GLARMA) models were fitted to evaluate the temporal dynamics in AML incidence using data for all cases, and data for each sex and age group.
Long-term trend
A total of 26,472 patients with a first diagnosis of active AML were hospitalized in Spain and registered at the country’s Minimum Basic Data Set (CMBD) during 2004-2015. In the end, there were 26,475 patients in the study population; a greater proportion of cases were male (56.0%), and the median age at diagnosis was 67 years.
Seasonal and trend decomposition using Loess decomposition of the incidence rates observed in the overall population exhibited seasonal fluctuation with a peak in January. A slight upward trend was apparent from visual inspection with an upturn in early 2005 and a downturn at the end of 2013. As for the differences by sex groups and age groups, Dr. Alonso said, “For both sexes and in age groups 5-19, 20-49, and 50-64 years, we found that the results were identical to those found in the overall population.”
The final model included an upward linear long-term trend, as well as the variables monthly seasonality and December 2015. The estimated monthly long-term trend implies that the monthly incidence rates of AML diagnoses annually increased by 0.4% (95% confidence interval [CI], 0.2%-0.6%; P = .0011), given that the other covariates are held constant.
January displayed the highest incidence rate of AML, with a minimum average difference of 7%, when compared with February (95% CI, 2%-12%; P = .0143) and a maximum average difference of 16%, compared with November (95% CI, 11%-21%; P < .0001) and August (95% CI, 10%-21%; P < .0001).
The incidence rate of AML for December 2015 was 0.43 (95% CI, 0.34-0.54; P < .0001) times the average incidence rate for the rest of the study period.
Potential role of viruses
“We have to keep in mind that infectious agents (viral infections) and environmental factors (allergens) don’t disappear in the warmer months,” Dr. Martínez added. “There are just other viruses and different factors. We don’t know the role or the weight that each one of the factors has, either individually or specifically, in the development of AML. In addition, we know that AML is a very heterogeneous disease and that various factors, including genetic ones, can be involved in its etiopathogenesis.”
With respect to the stem cell theory in this leukemia, Dr. Alonso emphasized that, “in theory, the virus could fit into it with no problem. That said, any other environmental agent could also produce the described phenomenon where the rapid proliferation of quiescent leukemic stem cells is stimulated, thereby hastening the diagnosis.”
“Should the etiological factor be found,” Dr. Martínez noted, “we can try to reduce exposure and thereby decrease the incidence of AML. On the other hand, discovering how the environmental factor stimulates the proliferation of quiescent leukemic [stem] cells could enhance our knowledge about the regulation of that.”
As to whether there is evidence for the involvement of infections in other hematologic malignancies, Dr. Martínez reported, “This has already been seen. And this study shows other examples (Epstein-Barr virus and human T-cell lymphotropic virus type 1 with lymphomas), and there could also be Helicobacter pylori and lymphomas.”
Outside of hematology, human papillomavirus has been associated with cervical cancer, tobacco with lung cancer, sun with skin cancer, and diet with the development of some solid neoplasms.
“The study speaks about the concept of a latency period. To accept the idea that a factor or virus that’s more prevalent in winter produces, on its own, AML in a few weeks or months means accepting the idea of a very short latency period – something that’s not usually the case. For that, another explanation is given: An abnormal immune response or that a seasonal infectious agent can be capable of promoting leukemogenesis. These are also hypotheses to be explored in the future,” suggested Dr. Martínez.
New research network
Several potential limitations of this study should be considered. One limitation is that AML cases were obtained from the CMBD registry as defined by ICD-9, and no other AML classifications were available. Another limitation is that information on the date of onset of clinical symptoms was not available for analysis. In addition, a further limitation related to the source of their data may have led the researchers to underestimate the incidence rates of AML in older patients, as only hospitalized patients were captured in their study.
As for continuing the research, the results make it necessary to carry out complementary epidemiologic studies that will examine the association between seasonal risk factors and the increased diagnosis of AML during winter months.
To go forward, the first step would be to secure funding. For this purpose, a network is being put together featuring collaborators from other world-renowned research groups that are at the top of their respective disciplines. Through this network, they hope to be able to apply together for public research grants from countries in Europe and elsewhere as well as to establish collaborations with various companies in the private sector.
“This could open up new therapeutic avenues in the future, as we could try to force leukemic stem cells to divide, thereby reducing the resistance that the standard treatments usually demonstrate,” Dr. Alonso concluded.
Dr. Alonso received research funding from Incyte, Pfizer International, and Astellas Pharma outside the present work. Dr. Martínez disclosed no relevant financial relationships.
This article was translated from the Medscape Spanish edition. A version of the article appeared on Medscape.com.
Most diagnoses of acute myeloid leukemia (AML) are made during January. This finding strongly implies that seasonal factors, such as infectious agents or environmental triggers, influence the development or proliferation of the disease, which points to prevention opportunities. This was the conclusion of an international study led by a team from the Jiménez Díaz Foundation University Hospital Health Research Institute (IIS-FJD) in Madrid, in collaboration with colleagues from the University of Bristol, England. Their work was published in the British Journal of Haematology.
The study’s aim was to investigate the potential seasonal and long-term trends in AML diagnosis in an overall population and in subgroups according to sex and age. To do so, the researchers examined 26,472 cases of AML diagnosed in Spain between 2004 and 2015. They found seasonality in the diagnosis of this type of leukemia. This “could point to there being an underlying seasonal etiology at play,” noted one of the main authors of the study, Juan Manuel Alonso, MD, a physician in the IIS-FJD’s department of hematology and hemotherapy.
“The environmental triggers involved could be radiation, pollution, allergens, or infectious agents like viruses. We’re leaning toward viruses, because there are already distinct solid tumor and hematologic cancers that are caused by them and because, in the winter months, there’s an increased incidence of cancers due to viral infections,” Dr. Alonso said in an interview. “The etiological mechanism should be different from that exerted by chronic viral pressure, because here we’re dealing with an acute and aggressive disease that probably needs a short incubation period.”
Various hypotheses
In an interview, David Martínez, MD, a hematologist at La Fe University Hospital in Valencia, Spain, described the research as “an extremely well done and much-discussed study on AML, a disease that appears to be diagnosed more frequently at a certain time of year – namely, January.
“There’s no clear explanation for this finding,” Dr. Martínez said. “Several possible reasons have been put forward and are being talked about. The one that seems to hold the most water is the hypothesis that infectious agents and environmental factors may have a greater influence. This is because the idea that they’re involved in neoplastic diseases is nothing new. In fact, there are a lot of publications and a good amount of scientific evidence that link viral infections and environmental factors with the development of oncologic diseases.”
AML is a rare disease yet is responsible for many cancer-related deaths. Mutations that cause AML can occur due to an inherited mutant gene or exposure to certain carcinogens, such as chemotherapy, radiotherapy, ionizing radiation, tobacco, and benzene. These findings are broadly similar to those of a large U.S.-based study by Calip et al., who found a peak of adult AML diagnoses during December and January from 1992 to 2008. Previous smaller studies have provided conflicting evidence, likely due to lower power or to the use of less advanced statistical approaches.
Seasonal factors involved?
Demonstration of seasonal variation in the occurrence of AML would, firstly, provide supportive evidence of etiology by seasonal factors, such as infectious agents or environmental factors, and, secondly, focus research onto the etiologic role of such factors.
The current study used population-based data on cases of AML occurring in Spain from a nationwide hospital discharge registry for the years 2004 to 2015. “This is, to our knowledge, the largest study aimed at investigating the potential seasonal and long-term trends in AML incidence in an overall population and in subgroups according to sex and age while employing novel statistical models with serial dependence for discrete-valued time series,” wrote the researchers.
They extracted information from the register of each case about the date of admission, discharge date, the anonymous identifier for each patient, International Classification of Diseases (ICD)–9 codes, sex, and date of birth, from which they derived age groups as described for the at-risk population. For patients hospitalized on more than one occasion, only the record corresponding to their first diagnosis of AML was selected.
AML cases per month were standardized to months of equal length.
Age/sex-standardized monthly incidence rates of AML were calculated using the census of Spanish population in 2010 as a “standard” population. Age-standardized and sex-standardized monthly incidence rates of AML were calculated.
Nine separate time-series decompositions were performed as an initial exploratory analysis on the monthly incidence rates of AML using data for all cases and data for each sex and age group. Nine separate Poisson generalized linear autoregressive moving average (GLARMA) models were fitted to evaluate the temporal dynamics in AML incidence using data for all cases, and data for each sex and age group.
Long-term trend
A total of 26,472 patients with a first diagnosis of active AML were hospitalized in Spain and registered at the country’s Minimum Basic Data Set (CMBD) during 2004-2015. In the end, there were 26,475 patients in the study population; a greater proportion of cases were male (56.0%), and the median age at diagnosis was 67 years.
Seasonal and trend decomposition using Loess decomposition of the incidence rates observed in the overall population exhibited seasonal fluctuation with a peak in January. A slight upward trend was apparent from visual inspection with an upturn in early 2005 and a downturn at the end of 2013. As for the differences by sex groups and age groups, Dr. Alonso said, “For both sexes and in age groups 5-19, 20-49, and 50-64 years, we found that the results were identical to those found in the overall population.”
The final model included an upward linear long-term trend, as well as the variables monthly seasonality and December 2015. The estimated monthly long-term trend implies that the monthly incidence rates of AML diagnoses annually increased by 0.4% (95% confidence interval [CI], 0.2%-0.6%; P = .0011), given that the other covariates are held constant.
January displayed the highest incidence rate of AML, with a minimum average difference of 7%, when compared with February (95% CI, 2%-12%; P = .0143) and a maximum average difference of 16%, compared with November (95% CI, 11%-21%; P < .0001) and August (95% CI, 10%-21%; P < .0001).
The incidence rate of AML for December 2015 was 0.43 (95% CI, 0.34-0.54; P < .0001) times the average incidence rate for the rest of the study period.
Potential role of viruses
“We have to keep in mind that infectious agents (viral infections) and environmental factors (allergens) don’t disappear in the warmer months,” Dr. Martínez added. “There are just other viruses and different factors. We don’t know the role or the weight that each one of the factors has, either individually or specifically, in the development of AML. In addition, we know that AML is a very heterogeneous disease and that various factors, including genetic ones, can be involved in its etiopathogenesis.”
With respect to the stem cell theory in this leukemia, Dr. Alonso emphasized that, “in theory, the virus could fit into it with no problem. That said, any other environmental agent could also produce the described phenomenon where the rapid proliferation of quiescent leukemic stem cells is stimulated, thereby hastening the diagnosis.”
“Should the etiological factor be found,” Dr. Martínez noted, “we can try to reduce exposure and thereby decrease the incidence of AML. On the other hand, discovering how the environmental factor stimulates the proliferation of quiescent leukemic [stem] cells could enhance our knowledge about the regulation of that.”
As to whether there is evidence for the involvement of infections in other hematologic malignancies, Dr. Martínez reported, “This has already been seen. And this study shows other examples (Epstein-Barr virus and human T-cell lymphotropic virus type 1 with lymphomas), and there could also be Helicobacter pylori and lymphomas.”
Outside of hematology, human papillomavirus has been associated with cervical cancer, tobacco with lung cancer, sun with skin cancer, and diet with the development of some solid neoplasms.
“The study speaks about the concept of a latency period. To accept the idea that a factor or virus that’s more prevalent in winter produces, on its own, AML in a few weeks or months means accepting the idea of a very short latency period – something that’s not usually the case. For that, another explanation is given: An abnormal immune response or that a seasonal infectious agent can be capable of promoting leukemogenesis. These are also hypotheses to be explored in the future,” suggested Dr. Martínez.
New research network
Several potential limitations of this study should be considered. One limitation is that AML cases were obtained from the CMBD registry as defined by ICD-9, and no other AML classifications were available. Another limitation is that information on the date of onset of clinical symptoms was not available for analysis. In addition, a further limitation related to the source of their data may have led the researchers to underestimate the incidence rates of AML in older patients, as only hospitalized patients were captured in their study.
As for continuing the research, the results make it necessary to carry out complementary epidemiologic studies that will examine the association between seasonal risk factors and the increased diagnosis of AML during winter months.
To go forward, the first step would be to secure funding. For this purpose, a network is being put together featuring collaborators from other world-renowned research groups that are at the top of their respective disciplines. Through this network, they hope to be able to apply together for public research grants from countries in Europe and elsewhere as well as to establish collaborations with various companies in the private sector.
“This could open up new therapeutic avenues in the future, as we could try to force leukemic stem cells to divide, thereby reducing the resistance that the standard treatments usually demonstrate,” Dr. Alonso concluded.
Dr. Alonso received research funding from Incyte, Pfizer International, and Astellas Pharma outside the present work. Dr. Martínez disclosed no relevant financial relationships.
This article was translated from the Medscape Spanish edition. A version of the article appeared on Medscape.com.
FROM THE BRITISH JOURNAL OF HEMATOLOGY
Pediatricians at odds over gender-affirming care for trans kids
Some members of the American Academy of Pediatrics say its association leadership is blocking discussion about a resolution asking for a “rigorous systematic review” of gender-affirming care guidelines.
At issue is 2018 guidance that states children can undergo hormonal therapy after they are deemed appropriate candidates following a thorough mental health evaluation.
Critics say minors under age 18 may be getting “fast-tracked” to hormonal treatment too quickly or inappropriately and can end up regretting the decision and facing medical conditions like sterility.
Five AAP members, which has a total membership of around 67,000 pediatricians in the United States and Canada, this year penned Resolution 27, calling for a possible update of the guidelines following consultation with stakeholders that include mental health and medical clinicians, parents, and patients “with diverse views and experiences.”
Those members and others in written comments on a members-only website accuse the AAP of deliberately silencing debate on the issue and changing resolution rules. Any AAP member can submit a resolution for consideration by the group’s leadership at its annual policy meeting.
This year, the AAP sent an email to members stating it would not allow comments on resolutions that had not been “sponsored” by one of the group’s 66 chapters or 88 internal committees, councils, or sections.
That’s why comments were not allowed on Resolution 27, said Mark Del Monte, the AAP’s CEO. A second attempt to get sponsorship during the annual leadership forum, held earlier this month in Chicago, also failed, he noted. Mr. Del Monte told this news organization that changes to the resolution process are made every year and that no rule changes were directly associated with Resolution 27.
But one of the resolution’s authors said there was sponsorship when members first drafted the suggestion. Julia Mason, MD, a board member for the Society for Evidence-based Gender Medicine and a pediatrician in private practice in Gresham, Ore., says an AAP chapter president agreed to second Resolution 27 but backed off after attending a different AAP meeting. Dr. Mason did not name the member.
On Aug. 10, AAP President Moira Szilagyi, MD, PhD, wrote in a blog on the AAP website – after the AAP leadership meeting in Chicago – that the lack of sponsorship “meant no one was willing to support their proposal.”
The AAP Leadership Council’s 154 voting entities approved 48 resolutions at the meeting, all of which will be referred to the AAP Board of Directors for potential, but not definite, action as the Board only takes resolutions under advisement, Mr. Del Monte notes.
In an email allowing members to comment on a resolution (number 28) regarding education support for caring for transgender patients, 23 chose to support Resolution 27 instead.
“I am wholeheartedly in support of Resolution 27, which interestingly has been removed from the list of resolutions for member comment,” one comment read. “I can no longer trust the AAP to provide medical evidence-based education with regard to care for transgender individuals.”
“We don’t need a formal resolution to look at the evidence around the care of transgender young people. Evaluating the evidence behind our recommendations, which the unsponsored resolution called for, is a routine part of the Academy’s policy-writing process,” wrote Dr. Szilagyi in her blog.
Mr. Del Monte says that “the 2018 policy is under review now.”
So far, “the evidence that we have seen reinforces our policy that gender-affirming care is the correct approach,” Mr. Del Monte stresses. “It is supported by every mainstream medical society in the world and is the standard of care,” he maintains.
Among those societies is the World Professional Association for Transgender Health, which in the draft of its latest Standards of Care (SOC8) – the first new guidance on the issue for 10 years – reportedly lowers the age for “top surgery” to 15 years.
The final SOC8 will most likely be published to coincide with WPATH’s annual meeting in September in Montreal.
Opponents plan to protest outside the AAP’s annual meeting, in Anaheim in October, Dr. Mason says.
“I’m concerned that kids with a transient gender identity are being funneled into medicalization that does not serve them,” Dr. Mason says. “I am worried that the trans identity is valued over the possibility of desistance,” she adds, admitting that her goal is to have fewer children transition gender.
Last summer, AAP found itself in hot water on the same topic when it barred SEGM from having a booth at the AAP annual meeting in 2021, as reported by this news organization.
A version of this article first appeared on Medscape.com.
Some members of the American Academy of Pediatrics say its association leadership is blocking discussion about a resolution asking for a “rigorous systematic review” of gender-affirming care guidelines.
At issue is 2018 guidance that states children can undergo hormonal therapy after they are deemed appropriate candidates following a thorough mental health evaluation.
Critics say minors under age 18 may be getting “fast-tracked” to hormonal treatment too quickly or inappropriately and can end up regretting the decision and facing medical conditions like sterility.
Five AAP members, which has a total membership of around 67,000 pediatricians in the United States and Canada, this year penned Resolution 27, calling for a possible update of the guidelines following consultation with stakeholders that include mental health and medical clinicians, parents, and patients “with diverse views and experiences.”
Those members and others in written comments on a members-only website accuse the AAP of deliberately silencing debate on the issue and changing resolution rules. Any AAP member can submit a resolution for consideration by the group’s leadership at its annual policy meeting.
This year, the AAP sent an email to members stating it would not allow comments on resolutions that had not been “sponsored” by one of the group’s 66 chapters or 88 internal committees, councils, or sections.
That’s why comments were not allowed on Resolution 27, said Mark Del Monte, the AAP’s CEO. A second attempt to get sponsorship during the annual leadership forum, held earlier this month in Chicago, also failed, he noted. Mr. Del Monte told this news organization that changes to the resolution process are made every year and that no rule changes were directly associated with Resolution 27.
But one of the resolution’s authors said there was sponsorship when members first drafted the suggestion. Julia Mason, MD, a board member for the Society for Evidence-based Gender Medicine and a pediatrician in private practice in Gresham, Ore., says an AAP chapter president agreed to second Resolution 27 but backed off after attending a different AAP meeting. Dr. Mason did not name the member.
On Aug. 10, AAP President Moira Szilagyi, MD, PhD, wrote in a blog on the AAP website – after the AAP leadership meeting in Chicago – that the lack of sponsorship “meant no one was willing to support their proposal.”
The AAP Leadership Council’s 154 voting entities approved 48 resolutions at the meeting, all of which will be referred to the AAP Board of Directors for potential, but not definite, action as the Board only takes resolutions under advisement, Mr. Del Monte notes.
In an email allowing members to comment on a resolution (number 28) regarding education support for caring for transgender patients, 23 chose to support Resolution 27 instead.
“I am wholeheartedly in support of Resolution 27, which interestingly has been removed from the list of resolutions for member comment,” one comment read. “I can no longer trust the AAP to provide medical evidence-based education with regard to care for transgender individuals.”
“We don’t need a formal resolution to look at the evidence around the care of transgender young people. Evaluating the evidence behind our recommendations, which the unsponsored resolution called for, is a routine part of the Academy’s policy-writing process,” wrote Dr. Szilagyi in her blog.
Mr. Del Monte says that “the 2018 policy is under review now.”
So far, “the evidence that we have seen reinforces our policy that gender-affirming care is the correct approach,” Mr. Del Monte stresses. “It is supported by every mainstream medical society in the world and is the standard of care,” he maintains.
Among those societies is the World Professional Association for Transgender Health, which in the draft of its latest Standards of Care (SOC8) – the first new guidance on the issue for 10 years – reportedly lowers the age for “top surgery” to 15 years.
The final SOC8 will most likely be published to coincide with WPATH’s annual meeting in September in Montreal.
Opponents plan to protest outside the AAP’s annual meeting, in Anaheim in October, Dr. Mason says.
“I’m concerned that kids with a transient gender identity are being funneled into medicalization that does not serve them,” Dr. Mason says. “I am worried that the trans identity is valued over the possibility of desistance,” she adds, admitting that her goal is to have fewer children transition gender.
Last summer, AAP found itself in hot water on the same topic when it barred SEGM from having a booth at the AAP annual meeting in 2021, as reported by this news organization.
A version of this article first appeared on Medscape.com.
Some members of the American Academy of Pediatrics say its association leadership is blocking discussion about a resolution asking for a “rigorous systematic review” of gender-affirming care guidelines.
At issue is 2018 guidance that states children can undergo hormonal therapy after they are deemed appropriate candidates following a thorough mental health evaluation.
Critics say minors under age 18 may be getting “fast-tracked” to hormonal treatment too quickly or inappropriately and can end up regretting the decision and facing medical conditions like sterility.
Five AAP members, which has a total membership of around 67,000 pediatricians in the United States and Canada, this year penned Resolution 27, calling for a possible update of the guidelines following consultation with stakeholders that include mental health and medical clinicians, parents, and patients “with diverse views and experiences.”
Those members and others in written comments on a members-only website accuse the AAP of deliberately silencing debate on the issue and changing resolution rules. Any AAP member can submit a resolution for consideration by the group’s leadership at its annual policy meeting.
This year, the AAP sent an email to members stating it would not allow comments on resolutions that had not been “sponsored” by one of the group’s 66 chapters or 88 internal committees, councils, or sections.
That’s why comments were not allowed on Resolution 27, said Mark Del Monte, the AAP’s CEO. A second attempt to get sponsorship during the annual leadership forum, held earlier this month in Chicago, also failed, he noted. Mr. Del Monte told this news organization that changes to the resolution process are made every year and that no rule changes were directly associated with Resolution 27.
But one of the resolution’s authors said there was sponsorship when members first drafted the suggestion. Julia Mason, MD, a board member for the Society for Evidence-based Gender Medicine and a pediatrician in private practice in Gresham, Ore., says an AAP chapter president agreed to second Resolution 27 but backed off after attending a different AAP meeting. Dr. Mason did not name the member.
On Aug. 10, AAP President Moira Szilagyi, MD, PhD, wrote in a blog on the AAP website – after the AAP leadership meeting in Chicago – that the lack of sponsorship “meant no one was willing to support their proposal.”
The AAP Leadership Council’s 154 voting entities approved 48 resolutions at the meeting, all of which will be referred to the AAP Board of Directors for potential, but not definite, action as the Board only takes resolutions under advisement, Mr. Del Monte notes.
In an email allowing members to comment on a resolution (number 28) regarding education support for caring for transgender patients, 23 chose to support Resolution 27 instead.
“I am wholeheartedly in support of Resolution 27, which interestingly has been removed from the list of resolutions for member comment,” one comment read. “I can no longer trust the AAP to provide medical evidence-based education with regard to care for transgender individuals.”
“We don’t need a formal resolution to look at the evidence around the care of transgender young people. Evaluating the evidence behind our recommendations, which the unsponsored resolution called for, is a routine part of the Academy’s policy-writing process,” wrote Dr. Szilagyi in her blog.
Mr. Del Monte says that “the 2018 policy is under review now.”
So far, “the evidence that we have seen reinforces our policy that gender-affirming care is the correct approach,” Mr. Del Monte stresses. “It is supported by every mainstream medical society in the world and is the standard of care,” he maintains.
Among those societies is the World Professional Association for Transgender Health, which in the draft of its latest Standards of Care (SOC8) – the first new guidance on the issue for 10 years – reportedly lowers the age for “top surgery” to 15 years.
The final SOC8 will most likely be published to coincide with WPATH’s annual meeting in September in Montreal.
Opponents plan to protest outside the AAP’s annual meeting, in Anaheim in October, Dr. Mason says.
“I’m concerned that kids with a transient gender identity are being funneled into medicalization that does not serve them,” Dr. Mason says. “I am worried that the trans identity is valued over the possibility of desistance,” she adds, admitting that her goal is to have fewer children transition gender.
Last summer, AAP found itself in hot water on the same topic when it barred SEGM from having a booth at the AAP annual meeting in 2021, as reported by this news organization.
A version of this article first appeared on Medscape.com.