TBD Meeting (5424-21)

The inadequacies and challenges of transitioning pediatric rheumatology patients to adult care were highlighted in several research studies shared at the annual scientific meeting of the Childhood Arthritis and Rheumatology Research Alliance.

Steve Debenport/Getty Images

“Not surprisingly, these studies demonstrate that transition challenges remain pervasive,” Rebecca Sadun, MD, PhD, who was not involved in any of the research, said in an interview. Nevertheless, she pointed out that one of the studies showed that eight of nine sites participating in one of the studies had at least developed a formal transition policy, and three were able to fully integrate that policy into their health care system despite the ongoing pandemic.

In that study, Joyce Chang, MD, of the Children’s Hospital of Philadelphia and colleagues used structured interviews and then quantitative research to explore processes for transition polices across nine rheumatology sites. Aside from the three that had already implemented their policies, three others were preparing implementation. The other three withdrew because of COVID-19. None of the sites had reached sustainment phase. Six of the sites had access to a social work network, and two sites had fewer than four providers.

The authors found that a higher level of change efficacy or change commitment using the Organizational Readiness for Implementing Change framework did not correspond with reaching implementation.

“The first sites to reach implementation had access to [information technology] support and involved nursing, though this was not sufficient or necessary,” the authors wrote. They noted the need for strategies to reduce the burden of data collection to improve the resilience of implementation efforts against health care system stress.
 

Who more often transitions to adult care?

Effective transition policies can help reduce the likelihood of young patients falling through the cracks as they grow from adolescence into young adulthood, especially those at highest risk for losing continuity of care.

“Young adults who are both medically and socially complex are at highest risk,” said Dr. Sadun, an assistant professor of adult and pediatric rheumatology at Duke University, Durham, N.C. “This is especially true for patients with systemic illnesses, patients requiring biologic medications, and patients with custody, transportation, and financial barriers.”

Research led by Emily A. Smitherman, MD, an assistant professor of pediatric rheumatology at Children’s of Alabama in Birmingham, looked more closely at who is and is not transitioning their care. The researchers analyzed retrospective data from the CARRA Registry, including the Long-Term Follow-Up Call Registry, through December 2019. Among 1,311 patients with inactive status, 537 of these patients had juvenile idiopathic arthritis and were aged at least 18 years. Only 186 of those patients, however, had data in the Long-Term Follow-Up Registry. Patients who were Black or had lower income were less likely to have data in the Long-Term Follow-Up Registry.

Just over half the patients in the long-term registry had transferred their care to an adult rheumatologist, and 83% overall were under the care of any physician. Patients who transferred their care were significantly more likely to have private insurance (87% vs. 70%; P = .009) and were more likely to be full-time students (74% vs. 58%; P = .036).

The researchers found no association between patients’ disease status at their last CARRA Registry visit and a successful transition to adult care. However, those who had transferred care to an adult rheumatologist tended to have a higher median level of pain (4 vs. 2 on a scale of 0-10) and more disease activity (3 vs. 1 on 0-10 scale) than did those who had not transferred care (P = .022 and P = .011, respectively). A higher proportion of those who transferred care had also experienced morning stiffness over the past week (49% vs. 30%; P = .015).
 

How young adults prefer to learn transition skills

The third study aimed to better understand the experience and preferences of young adults themselves as they transitioned from pediatric to adult care. Kristine Carandang, PhD, a postdoctoral scholar at the University of California, San Diego, and colleagues first conducted focus groups with 39 adolescents and young adults, ages 16-28 years, who had rheumatic conditions. Using the qualitative data from the focus groups, they designed a survey to capture quantitative data on young patients’ experiences.

“What we’re always trying to work on is, how do we bring that youth voice more clearly into the research literature?” Courtney K. Wells, PhD, MSW, an assistant professor of social work at the University of Wisconsin–River Falls, said in an interview. She noted that both she and Dr. Carandang were patients with rheumatic diseases, so they had lived and grown up with disease themselves and then become researchers.

“We have the information that’s in the literature, but then we also both work with youth in a couple different ways, and what we hear from youth is what we heard in our paper, but it isn’t all represented in the literature,” Dr. Wells said. That disconnect is why they also included two young adults as coauthors in the study.

“As much as we appreciate the model of the six components [of health care transition], we recognize that the youth voice isn’t represented very well,” Dr. Wells said. “The way it’s written is more for doctors and policy makers and targeted for the health care system rather than the young people themselves.”

Their research bore that out. Among 137 survey respondents, aged 18-28 years, the vast majority (89%) were women and most (75%) were White. Half the patients (50%) had a diagnosis of lupus.

“For 9 out of 11 self-management and self-advocacy skills examined, there was a significant difference between how adolescent and young adult patients experienced learning self- management skills versus how they would have preferred to learn the skills,” the researchers concluded. “Overall, adolescent and young adult patients most frequently learned about transition skills from their parents. Most participants would have preferred to learn these skills from their rheumatology team.”

For example, 46.7% of the respondents learned how to communicate their medical history from their parents, but 48.5% would have preferred to learn that from their rheumatology team. Only a quarter (24.8%) had learned that skill from their health care team.

“For most of these skills, they were getting that information from their parents, which is concerning because their parents don’t necessarily have information that is accurate,” Dr. Wells said. “Their parents managed their health care, and they taught them to do it the way they were doing it.”

Just over one-third of respondents said they learned from their parents how to track their symptoms so they could answer the rheumatologists’ questions. Only one in five respondents (20.4%) had learned this skill from their rheumatology team, but 41.2% would have preferred hearing it from their health care team, compared with 22.1% who preferred learning it from their parents.

Nearly half the respondents reported learning from their parents how to advocate for themselves when dissatisfied with their care or symptoms (49.6%) and how to talk to the office staff to make appointments, fill out paperwork, and access health records (47.4%). Just over half (51.5%) would have preferred to learn about office communication from their health care team. Preferences on self-advocacy were split between learning from parents (36.8%) and learning from their health care team (31.6%).

An opportunity for other organizations to support transition

The researchers noted that education did not necessarily need to come only from rheumatologists. Other health care professionals, including nurses and social workers, could help young patients develop skills as well.

“They said they’re also open to talking to other people, but they want their rheumatologist to lead the whole process,” Dr. Wells said. While reimbursement gaps may have presented a barrier in the past, Dr. Wells said that current billing codes have removed that obstacle, allowing physicians to bill for discussing transition skills and care.

“Largely, it’s a time issue,” Dr. Wells said. “Rheumatologists are going to tell patients first about their disease, ask how their medication is working and how their health is. Then, if we have time, we’ll cover the transition pieces, and what it boils down to is that they just don’t have time.”

The respondents indicated an interest in technology that can help their education and transition, such as patient portals, telehealth, and smartphone apps.

While 66.4% of respondents said they would attend an in-person health care appointment to learn skills for transitioning to adult care, 74.5% would attend a telehealth appointment, and 77.2% would complete a structured program within a patient portal.

Dr. Wells said she doesn’t see many of the health care system pressures easing up to allow rheumatologists more time for transition care, but she sees an opportunity for organizations, such as the Arthritis Foundation or Lupus Foundation of America, to step in and help.

“It is a matter of being creative and that, ultimately, is the barrier: Whose job is it to make it happen?” she said. “That’s where some other groups are going to need to be advocates.”

Another notable set of findings from this research was the need for young patients’ access to mental health and sexual/reproductive health services. Just over two-thirds of respondents preferred to discuss these topics with their rheumatology team, but only 59.1% felt comfortable starting the conversation about mental health, and only 47.4% felt comfortable broaching the topic of reproductive/sexual health. Even more patients preferred discussing use of drugs and alcohol with their health care team (71.5%), but more patients also felt comfortable initiating that discussion (72.2%).

“It may be that somebody who’s trained to address those issues, especially the mental health piece, may be more appropriate to have that role, and that’s part of the transition, too, these other larger life issues,” Dr. Wells said. “One of the benefits of going to an adult rheumatologist is that they are the most knowledgeable and prepared to help you with those topics.”

None of the individuals quoted in this story had any disclosures to report.

The inadequacies and challenges of transitioning pediatric rheumatology patients to adult care were highlighted in several research studies shared at the annual scientific meeting of the Childhood Arthritis and Rheumatology Research Alliance.

Steve Debenport/Getty Images

“Not surprisingly, these studies demonstrate that transition challenges remain pervasive,” Rebecca Sadun, MD, PhD, who was not involved in any of the research, said in an interview. Nevertheless, she pointed out that one of the studies showed that eight of nine sites participating in one of the studies had at least developed a formal transition policy, and three were able to fully integrate that policy into their health care system despite the ongoing pandemic.

In that study, Joyce Chang, MD, of the Children’s Hospital of Philadelphia and colleagues used structured interviews and then quantitative research to explore processes for transition polices across nine rheumatology sites. Aside from the three that had already implemented their policies, three others were preparing implementation. The other three withdrew because of COVID-19. None of the sites had reached sustainment phase. Six of the sites had access to a social work network, and two sites had fewer than four providers.

The authors found that a higher level of change efficacy or change commitment using the Organizational Readiness for Implementing Change framework did not correspond with reaching implementation.

“The first sites to reach implementation had access to [information technology] support and involved nursing, though this was not sufficient or necessary,” the authors wrote. They noted the need for strategies to reduce the burden of data collection to improve the resilience of implementation efforts against health care system stress.
 

Who more often transitions to adult care?

Effective transition policies can help reduce the likelihood of young patients falling through the cracks as they grow from adolescence into young adulthood, especially those at highest risk for losing continuity of care.

“Young adults who are both medically and socially complex are at highest risk,” said Dr. Sadun, an assistant professor of adult and pediatric rheumatology at Duke University, Durham, N.C. “This is especially true for patients with systemic illnesses, patients requiring biologic medications, and patients with custody, transportation, and financial barriers.”

Research led by Emily A. Smitherman, MD, an assistant professor of pediatric rheumatology at Children’s of Alabama in Birmingham, looked more closely at who is and is not transitioning their care. The researchers analyzed retrospective data from the CARRA Registry, including the Long-Term Follow-Up Call Registry, through December 2019. Among 1,311 patients with inactive status, 537 of these patients had juvenile idiopathic arthritis and were aged at least 18 years. Only 186 of those patients, however, had data in the Long-Term Follow-Up Registry. Patients who were Black or had lower income were less likely to have data in the Long-Term Follow-Up Registry.

Just over half the patients in the long-term registry had transferred their care to an adult rheumatologist, and 83% overall were under the care of any physician. Patients who transferred their care were significantly more likely to have private insurance (87% vs. 70%; P = .009) and were more likely to be full-time students (74% vs. 58%; P = .036).

The researchers found no association between patients’ disease status at their last CARRA Registry visit and a successful transition to adult care. However, those who had transferred care to an adult rheumatologist tended to have a higher median level of pain (4 vs. 2 on a scale of 0-10) and more disease activity (3 vs. 1 on 0-10 scale) than did those who had not transferred care (P = .022 and P = .011, respectively). A higher proportion of those who transferred care had also experienced morning stiffness over the past week (49% vs. 30%; P = .015).
 

How young adults prefer to learn transition skills

The third study aimed to better understand the experience and preferences of young adults themselves as they transitioned from pediatric to adult care. Kristine Carandang, PhD, a postdoctoral scholar at the University of California, San Diego, and colleagues first conducted focus groups with 39 adolescents and young adults, ages 16-28 years, who had rheumatic conditions. Using the qualitative data from the focus groups, they designed a survey to capture quantitative data on young patients’ experiences.

“What we’re always trying to work on is, how do we bring that youth voice more clearly into the research literature?” Courtney K. Wells, PhD, MSW, an assistant professor of social work at the University of Wisconsin–River Falls, said in an interview. She noted that both she and Dr. Carandang were patients with rheumatic diseases, so they had lived and grown up with disease themselves and then become researchers.

“We have the information that’s in the literature, but then we also both work with youth in a couple different ways, and what we hear from youth is what we heard in our paper, but it isn’t all represented in the literature,” Dr. Wells said. That disconnect is why they also included two young adults as coauthors in the study.

“As much as we appreciate the model of the six components [of health care transition], we recognize that the youth voice isn’t represented very well,” Dr. Wells said. “The way it’s written is more for doctors and policy makers and targeted for the health care system rather than the young people themselves.”

Their research bore that out. Among 137 survey respondents, aged 18-28 years, the vast majority (89%) were women and most (75%) were White. Half the patients (50%) had a diagnosis of lupus.

“For 9 out of 11 self-management and self-advocacy skills examined, there was a significant difference between how adolescent and young adult patients experienced learning self- management skills versus how they would have preferred to learn the skills,” the researchers concluded. “Overall, adolescent and young adult patients most frequently learned about transition skills from their parents. Most participants would have preferred to learn these skills from their rheumatology team.”

For example, 46.7% of the respondents learned how to communicate their medical history from their parents, but 48.5% would have preferred to learn that from their rheumatology team. Only a quarter (24.8%) had learned that skill from their health care team.

“For most of these skills, they were getting that information from their parents, which is concerning because their parents don’t necessarily have information that is accurate,” Dr. Wells said. “Their parents managed their health care, and they taught them to do it the way they were doing it.”

Just over one-third of respondents said they learned from their parents how to track their symptoms so they could answer the rheumatologists’ questions. Only one in five respondents (20.4%) had learned this skill from their rheumatology team, but 41.2% would have preferred hearing it from their health care team, compared with 22.1% who preferred learning it from their parents.

Nearly half the respondents reported learning from their parents how to advocate for themselves when dissatisfied with their care or symptoms (49.6%) and how to talk to the office staff to make appointments, fill out paperwork, and access health records (47.4%). Just over half (51.5%) would have preferred to learn about office communication from their health care team. Preferences on self-advocacy were split between learning from parents (36.8%) and learning from their health care team (31.6%).

An opportunity for other organizations to support transition

The researchers noted that education did not necessarily need to come only from rheumatologists. Other health care professionals, including nurses and social workers, could help young patients develop skills as well.

“They said they’re also open to talking to other people, but they want their rheumatologist to lead the whole process,” Dr. Wells said. While reimbursement gaps may have presented a barrier in the past, Dr. Wells said that current billing codes have removed that obstacle, allowing physicians to bill for discussing transition skills and care.

“Largely, it’s a time issue,” Dr. Wells said. “Rheumatologists are going to tell patients first about their disease, ask how their medication is working and how their health is. Then, if we have time, we’ll cover the transition pieces, and what it boils down to is that they just don’t have time.”

The respondents indicated an interest in technology that can help their education and transition, such as patient portals, telehealth, and smartphone apps.

While 66.4% of respondents said they would attend an in-person health care appointment to learn skills for transitioning to adult care, 74.5% would attend a telehealth appointment, and 77.2% would complete a structured program within a patient portal.

Dr. Wells said she doesn’t see many of the health care system pressures easing up to allow rheumatologists more time for transition care, but she sees an opportunity for organizations, such as the Arthritis Foundation or Lupus Foundation of America, to step in and help.

“It is a matter of being creative and that, ultimately, is the barrier: Whose job is it to make it happen?” she said. “That’s where some other groups are going to need to be advocates.”

Another notable set of findings from this research was the need for young patients’ access to mental health and sexual/reproductive health services. Just over two-thirds of respondents preferred to discuss these topics with their rheumatology team, but only 59.1% felt comfortable starting the conversation about mental health, and only 47.4% felt comfortable broaching the topic of reproductive/sexual health. Even more patients preferred discussing use of drugs and alcohol with their health care team (71.5%), but more patients also felt comfortable initiating that discussion (72.2%).

“It may be that somebody who’s trained to address those issues, especially the mental health piece, may be more appropriate to have that role, and that’s part of the transition, too, these other larger life issues,” Dr. Wells said. “One of the benefits of going to an adult rheumatologist is that they are the most knowledgeable and prepared to help you with those topics.”

None of the individuals quoted in this story had any disclosures to report.

The inadequacies and challenges of transitioning pediatric rheumatology patients to adult care were highlighted in several research studies shared at the annual scientific meeting of the Childhood Arthritis and Rheumatology Research Alliance.

Steve Debenport/Getty Images

“Not surprisingly, these studies demonstrate that transition challenges remain pervasive,” Rebecca Sadun, MD, PhD, who was not involved in any of the research, said in an interview. Nevertheless, she pointed out that one of the studies showed that eight of nine sites participating in one of the studies had at least developed a formal transition policy, and three were able to fully integrate that policy into their health care system despite the ongoing pandemic.

In that study, Joyce Chang, MD, of the Children’s Hospital of Philadelphia and colleagues used structured interviews and then quantitative research to explore processes for transition polices across nine rheumatology sites. Aside from the three that had already implemented their policies, three others were preparing implementation. The other three withdrew because of COVID-19. None of the sites had reached sustainment phase. Six of the sites had access to a social work network, and two sites had fewer than four providers.

The authors found that a higher level of change efficacy or change commitment using the Organizational Readiness for Implementing Change framework did not correspond with reaching implementation.

“The first sites to reach implementation had access to [information technology] support and involved nursing, though this was not sufficient or necessary,” the authors wrote. They noted the need for strategies to reduce the burden of data collection to improve the resilience of implementation efforts against health care system stress.
 

Who more often transitions to adult care?

Effective transition policies can help reduce the likelihood of young patients falling through the cracks as they grow from adolescence into young adulthood, especially those at highest risk for losing continuity of care.

“Young adults who are both medically and socially complex are at highest risk,” said Dr. Sadun, an assistant professor of adult and pediatric rheumatology at Duke University, Durham, N.C. “This is especially true for patients with systemic illnesses, patients requiring biologic medications, and patients with custody, transportation, and financial barriers.”

Research led by Emily A. Smitherman, MD, an assistant professor of pediatric rheumatology at Children’s of Alabama in Birmingham, looked more closely at who is and is not transitioning their care. The researchers analyzed retrospective data from the CARRA Registry, including the Long-Term Follow-Up Call Registry, through December 2019. Among 1,311 patients with inactive status, 537 of these patients had juvenile idiopathic arthritis and were aged at least 18 years. Only 186 of those patients, however, had data in the Long-Term Follow-Up Registry. Patients who were Black or had lower income were less likely to have data in the Long-Term Follow-Up Registry.

Just over half the patients in the long-term registry had transferred their care to an adult rheumatologist, and 83% overall were under the care of any physician. Patients who transferred their care were significantly more likely to have private insurance (87% vs. 70%; P = .009) and were more likely to be full-time students (74% vs. 58%; P = .036).

The researchers found no association between patients’ disease status at their last CARRA Registry visit and a successful transition to adult care. However, those who had transferred care to an adult rheumatologist tended to have a higher median level of pain (4 vs. 2 on a scale of 0-10) and more disease activity (3 vs. 1 on 0-10 scale) than did those who had not transferred care (P = .022 and P = .011, respectively). A higher proportion of those who transferred care had also experienced morning stiffness over the past week (49% vs. 30%; P = .015).
 

How young adults prefer to learn transition skills

The third study aimed to better understand the experience and preferences of young adults themselves as they transitioned from pediatric to adult care. Kristine Carandang, PhD, a postdoctoral scholar at the University of California, San Diego, and colleagues first conducted focus groups with 39 adolescents and young adults, ages 16-28 years, who had rheumatic conditions. Using the qualitative data from the focus groups, they designed a survey to capture quantitative data on young patients’ experiences.

“What we’re always trying to work on is, how do we bring that youth voice more clearly into the research literature?” Courtney K. Wells, PhD, MSW, an assistant professor of social work at the University of Wisconsin–River Falls, said in an interview. She noted that both she and Dr. Carandang were patients with rheumatic diseases, so they had lived and grown up with disease themselves and then become researchers.

“We have the information that’s in the literature, but then we also both work with youth in a couple different ways, and what we hear from youth is what we heard in our paper, but it isn’t all represented in the literature,” Dr. Wells said. That disconnect is why they also included two young adults as coauthors in the study.

“As much as we appreciate the model of the six components [of health care transition], we recognize that the youth voice isn’t represented very well,” Dr. Wells said. “The way it’s written is more for doctors and policy makers and targeted for the health care system rather than the young people themselves.”

Their research bore that out. Among 137 survey respondents, aged 18-28 years, the vast majority (89%) were women and most (75%) were White. Half the patients (50%) had a diagnosis of lupus.

“For 9 out of 11 self-management and self-advocacy skills examined, there was a significant difference between how adolescent and young adult patients experienced learning self- management skills versus how they would have preferred to learn the skills,” the researchers concluded. “Overall, adolescent and young adult patients most frequently learned about transition skills from their parents. Most participants would have preferred to learn these skills from their rheumatology team.”

For example, 46.7% of the respondents learned how to communicate their medical history from their parents, but 48.5% would have preferred to learn that from their rheumatology team. Only a quarter (24.8%) had learned that skill from their health care team.

“For most of these skills, they were getting that information from their parents, which is concerning because their parents don’t necessarily have information that is accurate,” Dr. Wells said. “Their parents managed their health care, and they taught them to do it the way they were doing it.”

Just over one-third of respondents said they learned from their parents how to track their symptoms so they could answer the rheumatologists’ questions. Only one in five respondents (20.4%) had learned this skill from their rheumatology team, but 41.2% would have preferred hearing it from their health care team, compared with 22.1% who preferred learning it from their parents.

Nearly half the respondents reported learning from their parents how to advocate for themselves when dissatisfied with their care or symptoms (49.6%) and how to talk to the office staff to make appointments, fill out paperwork, and access health records (47.4%). Just over half (51.5%) would have preferred to learn about office communication from their health care team. Preferences on self-advocacy were split between learning from parents (36.8%) and learning from their health care team (31.6%).

An opportunity for other organizations to support transition

The researchers noted that education did not necessarily need to come only from rheumatologists. Other health care professionals, including nurses and social workers, could help young patients develop skills as well.

“They said they’re also open to talking to other people, but they want their rheumatologist to lead the whole process,” Dr. Wells said. While reimbursement gaps may have presented a barrier in the past, Dr. Wells said that current billing codes have removed that obstacle, allowing physicians to bill for discussing transition skills and care.

“Largely, it’s a time issue,” Dr. Wells said. “Rheumatologists are going to tell patients first about their disease, ask how their medication is working and how their health is. Then, if we have time, we’ll cover the transition pieces, and what it boils down to is that they just don’t have time.”

The respondents indicated an interest in technology that can help their education and transition, such as patient portals, telehealth, and smartphone apps.

While 66.4% of respondents said they would attend an in-person health care appointment to learn skills for transitioning to adult care, 74.5% would attend a telehealth appointment, and 77.2% would complete a structured program within a patient portal.

Dr. Wells said she doesn’t see many of the health care system pressures easing up to allow rheumatologists more time for transition care, but she sees an opportunity for organizations, such as the Arthritis Foundation or Lupus Foundation of America, to step in and help.

“It is a matter of being creative and that, ultimately, is the barrier: Whose job is it to make it happen?” she said. “That’s where some other groups are going to need to be advocates.”

Another notable set of findings from this research was the need for young patients’ access to mental health and sexual/reproductive health services. Just over two-thirds of respondents preferred to discuss these topics with their rheumatology team, but only 59.1% felt comfortable starting the conversation about mental health, and only 47.4% felt comfortable broaching the topic of reproductive/sexual health. Even more patients preferred discussing use of drugs and alcohol with their health care team (71.5%), but more patients also felt comfortable initiating that discussion (72.2%).

“It may be that somebody who’s trained to address those issues, especially the mental health piece, may be more appropriate to have that role, and that’s part of the transition, too, these other larger life issues,” Dr. Wells said. “One of the benefits of going to an adult rheumatologist is that they are the most knowledgeable and prepared to help you with those topics.”

None of the individuals quoted in this story had any disclosures to report.

Children with juvenile idiopathic arthritis (JIA) have nearly triple the risk of developing psoriasis after they begin therapy with tumor necrosis factor (TNF) inhibitors, according to preliminary research shared at the annual meeting of the Childhood Arthritis and Rheumatology Research Alliance (CARRA).

Previous retrospective research at the Children’s Hospital of Philadelphia had found similar results, so the goal of this study was to look at prospectively collected data from the CARRA registry that represented a broader patient population than that of a single institution, lead author Yongdong (Dan) Zhao, MD, PhD, assistant professor of rheumatology at the University of Washington, Seattle, and pediatric rheumatologist at Seattle Children’s Hospital, said in an interview.

“The take-home message is that we confirmed this finding, and everyone who prescribed this should be aware [of the risk] and also make the family aware because often the family just thinks this is eczema and they self-manage without reporting it to the physician,” Dr. Zhao said. He advised that physicians look for evidence of psoriasis at visits and, depending on the severity, be prepared with a management plan if needed.

The researchers analyzed data from patients with JIA enrolled in the CARRA registry during June 2015–January 2020. They excluded patients with a diagnosis of inflammatory bowel disease, psoriasis at or before their JIA diagnosis, or missing data regarding the timing of psoriasis diagnosis or starting TNF inhibitors.

Among 8,222 children (29% of whom were male), just over half (54%) had ever used TNF inhibitors. Most of the patients (76%) were White, and their average age at the time of JIA diagnosis was 7 years. Compared to those with no exposure to the drugs, patients who had ever been prescribed a TNF inhibitor were three times more likely to receive a diagnosis of psoriasis afterward (unadjusted hazard ratio [HR] = 3.01; P < .01). The risk dropped only slightly (HR = 2.93; P < .01) after adjustment for gender, race, family history of psoriasis, initial International League of Associations for Rheumatology classification category, and ever having taken methotrexate.

Overall median follow-up time for the cohort was 46.7 months. The overall incidence of psoriasis in the cohort was 5.28 cases per 1,000 person-years, which split into 3.24 cases for those never exposed to TNF inhibitors and 8.49 for those ever exposed. The incidence was similar (8.31 cases per 1,000 person-years) after only the first course of TNF inhibitors.

The risk appeared greatest for adalimumab, with an incidence of 12.2 cases per 1,000 person-years after a first course in TNF inhibitor-naive patients, compared to etanercept (6.31 cases) and infliximab (9.04 cases), which did not reach statistical significance. Incidence for cumulative exposure was greater for adalimumab: 13.17 cases per 1,000 person-years, compared to 5.19 cases for etanercept and 8.77 cases for infliximab.

TNF inhibitors are first-line biologic treatment for JIA and have a longer track record for safety and effectiveness than that of newer drugs, Dr. Zhao said. They’re also commonly used for children with psoriasis, said Pamela Weiss, MD, associate professor of pediatrics and epidemiology, at the University of Pennsylvania, Philadelphia, and clinical research director of rheumatology at Children’s Hospital of Philadelphia. She was not involved in the study.

“TNF inhibitors are an incredibly useful class of medications for children with arthritis, including psoriatic arthritis,” Dr. Weiss said in an interview. “I don’t think these findings impact the risk-benefit profile of TNF inhibitors as paradoxical psoriasis is a known side effect of the medication and something most of us already counsel our families and patients about before starting a TNF inhibitor medication.”

Dr. Zhao likewise did not think the findings changed these drugs’ benefit-risk profile as long as people are aware of it. If the psoriasis is mild, he said, it’s often possible to continue the TNF inhibitor therapy along with a topical medication for the psoriasis, “but if it’s really severe, or by patient preference, you may have to switch to a different TNF inhibitor or stop it,” he said. Occasionally, he has added an additional biologic to treat the psoriasis because the underlying JIA disease in the patient couldn’t be controlled without the TNF inhibitor.

Dr. Weiss similarly said that management will depend on the severity and on shared decision-making between the physician, patient, and family.

“If it’s a small area, it can often be managed with topical corticosteroids,” Dr. Weiss said. “If it involves a large area of the body or severely affects the scalp, then stopping the TNF inhibitor therapy and starting another therapy that targets a different pathway might be considered.”

The research was funded by CARRA. Dr. Zhao has received research funding from Bristol-Myers Squibb and has consulted for Novartis. Dr. Weiss has received consulting fees from Pfizer and Lilly.

Children with juvenile idiopathic arthritis (JIA) have nearly triple the risk of developing psoriasis after they begin therapy with tumor necrosis factor (TNF) inhibitors, according to preliminary research shared at the annual meeting of the Childhood Arthritis and Rheumatology Research Alliance (CARRA).

Previous retrospective research at the Children’s Hospital of Philadelphia had found similar results, so the goal of this study was to look at prospectively collected data from the CARRA registry that represented a broader patient population than that of a single institution, lead author Yongdong (Dan) Zhao, MD, PhD, assistant professor of rheumatology at the University of Washington, Seattle, and pediatric rheumatologist at Seattle Children’s Hospital, said in an interview.

“The take-home message is that we confirmed this finding, and everyone who prescribed this should be aware [of the risk] and also make the family aware because often the family just thinks this is eczema and they self-manage without reporting it to the physician,” Dr. Zhao said. He advised that physicians look for evidence of psoriasis at visits and, depending on the severity, be prepared with a management plan if needed.

The researchers analyzed data from patients with JIA enrolled in the CARRA registry during June 2015–January 2020. They excluded patients with a diagnosis of inflammatory bowel disease, psoriasis at or before their JIA diagnosis, or missing data regarding the timing of psoriasis diagnosis or starting TNF inhibitors.

Among 8,222 children (29% of whom were male), just over half (54%) had ever used TNF inhibitors. Most of the patients (76%) were White, and their average age at the time of JIA diagnosis was 7 years. Compared to those with no exposure to the drugs, patients who had ever been prescribed a TNF inhibitor were three times more likely to receive a diagnosis of psoriasis afterward (unadjusted hazard ratio [HR] = 3.01; P < .01). The risk dropped only slightly (HR = 2.93; P < .01) after adjustment for gender, race, family history of psoriasis, initial International League of Associations for Rheumatology classification category, and ever having taken methotrexate.

Overall median follow-up time for the cohort was 46.7 months. The overall incidence of psoriasis in the cohort was 5.28 cases per 1,000 person-years, which split into 3.24 cases for those never exposed to TNF inhibitors and 8.49 for those ever exposed. The incidence was similar (8.31 cases per 1,000 person-years) after only the first course of TNF inhibitors.

The risk appeared greatest for adalimumab, with an incidence of 12.2 cases per 1,000 person-years after a first course in TNF inhibitor-naive patients, compared to etanercept (6.31 cases) and infliximab (9.04 cases), which did not reach statistical significance. Incidence for cumulative exposure was greater for adalimumab: 13.17 cases per 1,000 person-years, compared to 5.19 cases for etanercept and 8.77 cases for infliximab.

TNF inhibitors are first-line biologic treatment for JIA and have a longer track record for safety and effectiveness than that of newer drugs, Dr. Zhao said. They’re also commonly used for children with psoriasis, said Pamela Weiss, MD, associate professor of pediatrics and epidemiology, at the University of Pennsylvania, Philadelphia, and clinical research director of rheumatology at Children’s Hospital of Philadelphia. She was not involved in the study.

“TNF inhibitors are an incredibly useful class of medications for children with arthritis, including psoriatic arthritis,” Dr. Weiss said in an interview. “I don’t think these findings impact the risk-benefit profile of TNF inhibitors as paradoxical psoriasis is a known side effect of the medication and something most of us already counsel our families and patients about before starting a TNF inhibitor medication.”

Dr. Zhao likewise did not think the findings changed these drugs’ benefit-risk profile as long as people are aware of it. If the psoriasis is mild, he said, it’s often possible to continue the TNF inhibitor therapy along with a topical medication for the psoriasis, “but if it’s really severe, or by patient preference, you may have to switch to a different TNF inhibitor or stop it,” he said. Occasionally, he has added an additional biologic to treat the psoriasis because the underlying JIA disease in the patient couldn’t be controlled without the TNF inhibitor.

Dr. Weiss similarly said that management will depend on the severity and on shared decision-making between the physician, patient, and family.

“If it’s a small area, it can often be managed with topical corticosteroids,” Dr. Weiss said. “If it involves a large area of the body or severely affects the scalp, then stopping the TNF inhibitor therapy and starting another therapy that targets a different pathway might be considered.”

The research was funded by CARRA. Dr. Zhao has received research funding from Bristol-Myers Squibb and has consulted for Novartis. Dr. Weiss has received consulting fees from Pfizer and Lilly.

Children with juvenile idiopathic arthritis (JIA) have nearly triple the risk of developing psoriasis after they begin therapy with tumor necrosis factor (TNF) inhibitors, according to preliminary research shared at the annual meeting of the Childhood Arthritis and Rheumatology Research Alliance (CARRA).

Previous retrospective research at the Children’s Hospital of Philadelphia had found similar results, so the goal of this study was to look at prospectively collected data from the CARRA registry that represented a broader patient population than that of a single institution, lead author Yongdong (Dan) Zhao, MD, PhD, assistant professor of rheumatology at the University of Washington, Seattle, and pediatric rheumatologist at Seattle Children’s Hospital, said in an interview.

“The take-home message is that we confirmed this finding, and everyone who prescribed this should be aware [of the risk] and also make the family aware because often the family just thinks this is eczema and they self-manage without reporting it to the physician,” Dr. Zhao said. He advised that physicians look for evidence of psoriasis at visits and, depending on the severity, be prepared with a management plan if needed.

The researchers analyzed data from patients with JIA enrolled in the CARRA registry during June 2015–January 2020. They excluded patients with a diagnosis of inflammatory bowel disease, psoriasis at or before their JIA diagnosis, or missing data regarding the timing of psoriasis diagnosis or starting TNF inhibitors.

Among 8,222 children (29% of whom were male), just over half (54%) had ever used TNF inhibitors. Most of the patients (76%) were White, and their average age at the time of JIA diagnosis was 7 years. Compared to those with no exposure to the drugs, patients who had ever been prescribed a TNF inhibitor were three times more likely to receive a diagnosis of psoriasis afterward (unadjusted hazard ratio [HR] = 3.01; P < .01). The risk dropped only slightly (HR = 2.93; P < .01) after adjustment for gender, race, family history of psoriasis, initial International League of Associations for Rheumatology classification category, and ever having taken methotrexate.

Overall median follow-up time for the cohort was 46.7 months. The overall incidence of psoriasis in the cohort was 5.28 cases per 1,000 person-years, which split into 3.24 cases for those never exposed to TNF inhibitors and 8.49 for those ever exposed. The incidence was similar (8.31 cases per 1,000 person-years) after only the first course of TNF inhibitors.

The risk appeared greatest for adalimumab, with an incidence of 12.2 cases per 1,000 person-years after a first course in TNF inhibitor-naive patients, compared to etanercept (6.31 cases) and infliximab (9.04 cases), which did not reach statistical significance. Incidence for cumulative exposure was greater for adalimumab: 13.17 cases per 1,000 person-years, compared to 5.19 cases for etanercept and 8.77 cases for infliximab.

TNF inhibitors are first-line biologic treatment for JIA and have a longer track record for safety and effectiveness than that of newer drugs, Dr. Zhao said. They’re also commonly used for children with psoriasis, said Pamela Weiss, MD, associate professor of pediatrics and epidemiology, at the University of Pennsylvania, Philadelphia, and clinical research director of rheumatology at Children’s Hospital of Philadelphia. She was not involved in the study.

“TNF inhibitors are an incredibly useful class of medications for children with arthritis, including psoriatic arthritis,” Dr. Weiss said in an interview. “I don’t think these findings impact the risk-benefit profile of TNF inhibitors as paradoxical psoriasis is a known side effect of the medication and something most of us already counsel our families and patients about before starting a TNF inhibitor medication.”

Dr. Zhao likewise did not think the findings changed these drugs’ benefit-risk profile as long as people are aware of it. If the psoriasis is mild, he said, it’s often possible to continue the TNF inhibitor therapy along with a topical medication for the psoriasis, “but if it’s really severe, or by patient preference, you may have to switch to a different TNF inhibitor or stop it,” he said. Occasionally, he has added an additional biologic to treat the psoriasis because the underlying JIA disease in the patient couldn’t be controlled without the TNF inhibitor.

Dr. Weiss similarly said that management will depend on the severity and on shared decision-making between the physician, patient, and family.

“If it’s a small area, it can often be managed with topical corticosteroids,” Dr. Weiss said. “If it involves a large area of the body or severely affects the scalp, then stopping the TNF inhibitor therapy and starting another therapy that targets a different pathway might be considered.”

The research was funded by CARRA. Dr. Zhao has received research funding from Bristol-Myers Squibb and has consulted for Novartis. Dr. Weiss has received consulting fees from Pfizer and Lilly.

A quarter of children receiving treatment with rituximab developed hypogammaglobulinemia within 18 months of starting the drug, according to preliminary research shared at the annual scientific meeting of the Childhood Arthritis and Rheumatology Research Alliance. The findings lend support to previous research identifying a risk of hypogammaglobulinemia in children and adolescents taking rituximab and the need for monitoring immunoglobulin levels in those prescribed it.

Marija Stepanovic/Getty Images Marija Stepanovic

“Our study highlights a role for heightened vigilance of rituximab-associated hypogammaglobulinemia and infections in pediatric patients with rheumatic conditions,” Mei-Sing Ong, PhD, of Harvard Medical School and the Harvard Pilgrim Health Care Institute, both in Boston, and colleagues concluded. “Increased risks appeared to be mediated, at least in part, by exposure to glucocorticoids (hypogammaglobulinemia and serious infections) or cyclophosphamide (hypogammaglobulinemia) administered prior to rituximab.”

The observational study involved a cohort of 93 patients, aged 2-25 years, treated at Boston Children’s Hospital during 2009-2019. The patients received rituximab for a wide range of rheumatic diseases, including systemic lupus erythematosus, vasculitis, juvenile idiopathic arthritis, and juvenile dermatomyositis or other polymyositis. The researchers excluded patients who had previously had hypogammaglobulinemia before using rituximab.

In this cohort, 26.9% of patients developed hypogammaglobulinemia, and 20.4% of patients developed an infectious complication within 18 months of beginning rituximab treatment. The infection was serious enough to require inpatient treatment in more than half of those who developed infections (57.9%).

Risk of new-onset hypogammaglobulinemia increased with decreasing age (P = .004), and males were more than four times more likely to develop the condition (odds ratio, 4.55; P = .012). Risk of an infection was also more likely among younger patients (OR, 0.87; P = .039).

Patients with vasculitis were fivefold more likely to develop the hypogammaglobulinemia than were those with other rheumatic diseases after the researchers accounted for age, sex, underlying disease, and medication use (OR, 5.04; P = .017). Risk was also greater in patients with exposure to cyclophosphamide in the year before starting rituximab (OR, 3.76; P = .032), although the finding narrowly reached statistical significance after adjustment for those covariates (OR, 4.41; P = .048).

Glucocorticoid treatment in the month before rituximab was associated with an elevated risk of hypogammaglobulinemia before adjustment (OR, 4.53; P = .007) but lost significance after adjustment. Those taking glucocorticoids had a greater than eightfold increase in infection risk (OR, 8.5; P = .006) before adjustment, which dropped to a fivefold risk after accounting for age, sex, underlying disease, and medication use (OR, 5.4; P = .040).

Monitoring needed for relatively common side effect

The findings are consistent with those seen in a cohort study conducted at Lurie Children’s Hospital of Chicago and published in 2019, said Amer M. Khojah, MD, an attending physician in allergy, immunology, and rheumatology at Lurie and an assistant professor of pediatrics at Northwestern University, also in Chicago. He was not involved in the current study.

“The main takeaway from this study is that we need to be careful about this side effect because it’s relatively common,” Dr. Khojah said in an interview.

At his institution, all patients undergo baseline labs to measure IgG levels prior to initiating rituximab and then have labs drawn again at 3 months and 1 year after starting the drug. Transient hypogammaglobulinemia may not require treatment, he said, but if it persists or the patient develops an infection, treatment with intravenous immunoglobulin is indicated. Yet the drug is so commonly used across a wide range of specialties that there’s a great deal of variability in clinical practice in terms of monitoring and follow-up, Dr. Khojah said.

“The problem is, if you don’t measure it, the patient might be get hypogammaglobulinemia and you don’t know it,” potentially leading to infections that the physician may or may not hear about, he said. “If you are the one who gives them the rituximab, you need to make sure they don’t get the side effects” or that they receive treatment if they do, he said.

“These data are supportive of the necessity to follow patients closely for infection after rituximab, especially considering that many infections may be severe and require hospitalization,” Dr. McAtee said in an interview. “The period of immunosuppression and subsequent infection risk following rituximab, even after single courses, may last well beyond a year following a single course. This is particularly true in patients receiving concurrent immunosuppressive therapy.”

Dr. McAtee similarly published data this year finding frequent infections among young patients receiving rituximab. Hypogammaglobulinemia is already more likely in patients who require rituximab because of other immunosuppressive medication they often take, but the risk “jumped substantially following rituximab,” he said. In addition to patients with low levels of IgG, 41% of patients showed low levels of IgM in that study.

“Nearly a third of patients with normal baseline IgM had persistently low levels more than a year after rituximab, consistent with prolonged B-cell recovery,” Dr. McAtee said. “It is necessary to highlight the importance of IgM in these patients, as common strategies to treat hypogammaglobulinemia, specifically intravenous immunoglobulin, do not replete IgM.”

Neither Dr. Khojah nor Dr. McAtee saw the risk of hypogammaglobulinemia as a reason to avoid rituximab when indicated.

“It is often the best choice for patients whose diseases have not responded to first-line therapies,” Dr. McAtee said. “This and similar studies inform the risk-benefit decision that the medical team must make, as well as the medical surveillance to be considered for patients following a course of rituximab. Going forward, strategies to mitigate infection risk after rituximab, particularly in the first 3 months when they are most common, should be pursued.”

The research was funded by CARRA, which receives funding from the Arthritis Foundation. The authors did not note whether they had any disclosures. Dr. Khojah and Dr. McAtee had no disclosures.

A quarter of children receiving treatment with rituximab developed hypogammaglobulinemia within 18 months of starting the drug, according to preliminary research shared at the annual scientific meeting of the Childhood Arthritis and Rheumatology Research Alliance. The findings lend support to previous research identifying a risk of hypogammaglobulinemia in children and adolescents taking rituximab and the need for monitoring immunoglobulin levels in those prescribed it.

Marija Stepanovic/Getty Images Marija Stepanovic

“Our study highlights a role for heightened vigilance of rituximab-associated hypogammaglobulinemia and infections in pediatric patients with rheumatic conditions,” Mei-Sing Ong, PhD, of Harvard Medical School and the Harvard Pilgrim Health Care Institute, both in Boston, and colleagues concluded. “Increased risks appeared to be mediated, at least in part, by exposure to glucocorticoids (hypogammaglobulinemia and serious infections) or cyclophosphamide (hypogammaglobulinemia) administered prior to rituximab.”

The observational study involved a cohort of 93 patients, aged 2-25 years, treated at Boston Children’s Hospital during 2009-2019. The patients received rituximab for a wide range of rheumatic diseases, including systemic lupus erythematosus, vasculitis, juvenile idiopathic arthritis, and juvenile dermatomyositis or other polymyositis. The researchers excluded patients who had previously had hypogammaglobulinemia before using rituximab.

In this cohort, 26.9% of patients developed hypogammaglobulinemia, and 20.4% of patients developed an infectious complication within 18 months of beginning rituximab treatment. The infection was serious enough to require inpatient treatment in more than half of those who developed infections (57.9%).

Risk of new-onset hypogammaglobulinemia increased with decreasing age (P = .004), and males were more than four times more likely to develop the condition (odds ratio, 4.55; P = .012). Risk of an infection was also more likely among younger patients (OR, 0.87; P = .039).

Patients with vasculitis were fivefold more likely to develop the hypogammaglobulinemia than were those with other rheumatic diseases after the researchers accounted for age, sex, underlying disease, and medication use (OR, 5.04; P = .017). Risk was also greater in patients with exposure to cyclophosphamide in the year before starting rituximab (OR, 3.76; P = .032), although the finding narrowly reached statistical significance after adjustment for those covariates (OR, 4.41; P = .048).

Glucocorticoid treatment in the month before rituximab was associated with an elevated risk of hypogammaglobulinemia before adjustment (OR, 4.53; P = .007) but lost significance after adjustment. Those taking glucocorticoids had a greater than eightfold increase in infection risk (OR, 8.5; P = .006) before adjustment, which dropped to a fivefold risk after accounting for age, sex, underlying disease, and medication use (OR, 5.4; P = .040).

Monitoring needed for relatively common side effect

The findings are consistent with those seen in a cohort study conducted at Lurie Children’s Hospital of Chicago and published in 2019, said Amer M. Khojah, MD, an attending physician in allergy, immunology, and rheumatology at Lurie and an assistant professor of pediatrics at Northwestern University, also in Chicago. He was not involved in the current study.

“The main takeaway from this study is that we need to be careful about this side effect because it’s relatively common,” Dr. Khojah said in an interview.

At his institution, all patients undergo baseline labs to measure IgG levels prior to initiating rituximab and then have labs drawn again at 3 months and 1 year after starting the drug. Transient hypogammaglobulinemia may not require treatment, he said, but if it persists or the patient develops an infection, treatment with intravenous immunoglobulin is indicated. Yet the drug is so commonly used across a wide range of specialties that there’s a great deal of variability in clinical practice in terms of monitoring and follow-up, Dr. Khojah said.

“The problem is, if you don’t measure it, the patient might be get hypogammaglobulinemia and you don’t know it,” potentially leading to infections that the physician may or may not hear about, he said. “If you are the one who gives them the rituximab, you need to make sure they don’t get the side effects” or that they receive treatment if they do, he said.

“These data are supportive of the necessity to follow patients closely for infection after rituximab, especially considering that many infections may be severe and require hospitalization,” Dr. McAtee said in an interview. “The period of immunosuppression and subsequent infection risk following rituximab, even after single courses, may last well beyond a year following a single course. This is particularly true in patients receiving concurrent immunosuppressive therapy.”

Dr. McAtee similarly published data this year finding frequent infections among young patients receiving rituximab. Hypogammaglobulinemia is already more likely in patients who require rituximab because of other immunosuppressive medication they often take, but the risk “jumped substantially following rituximab,” he said. In addition to patients with low levels of IgG, 41% of patients showed low levels of IgM in that study.

“Nearly a third of patients with normal baseline IgM had persistently low levels more than a year after rituximab, consistent with prolonged B-cell recovery,” Dr. McAtee said. “It is necessary to highlight the importance of IgM in these patients, as common strategies to treat hypogammaglobulinemia, specifically intravenous immunoglobulin, do not replete IgM.”

Neither Dr. Khojah nor Dr. McAtee saw the risk of hypogammaglobulinemia as a reason to avoid rituximab when indicated.

“It is often the best choice for patients whose diseases have not responded to first-line therapies,” Dr. McAtee said. “This and similar studies inform the risk-benefit decision that the medical team must make, as well as the medical surveillance to be considered for patients following a course of rituximab. Going forward, strategies to mitigate infection risk after rituximab, particularly in the first 3 months when they are most common, should be pursued.”

The research was funded by CARRA, which receives funding from the Arthritis Foundation. The authors did not note whether they had any disclosures. Dr. Khojah and Dr. McAtee had no disclosures.

A quarter of children receiving treatment with rituximab developed hypogammaglobulinemia within 18 months of starting the drug, according to preliminary research shared at the annual scientific meeting of the Childhood Arthritis and Rheumatology Research Alliance. The findings lend support to previous research identifying a risk of hypogammaglobulinemia in children and adolescents taking rituximab and the need for monitoring immunoglobulin levels in those prescribed it.

Marija Stepanovic/Getty Images Marija Stepanovic

“Our study highlights a role for heightened vigilance of rituximab-associated hypogammaglobulinemia and infections in pediatric patients with rheumatic conditions,” Mei-Sing Ong, PhD, of Harvard Medical School and the Harvard Pilgrim Health Care Institute, both in Boston, and colleagues concluded. “Increased risks appeared to be mediated, at least in part, by exposure to glucocorticoids (hypogammaglobulinemia and serious infections) or cyclophosphamide (hypogammaglobulinemia) administered prior to rituximab.”

The observational study involved a cohort of 93 patients, aged 2-25 years, treated at Boston Children’s Hospital during 2009-2019. The patients received rituximab for a wide range of rheumatic diseases, including systemic lupus erythematosus, vasculitis, juvenile idiopathic arthritis, and juvenile dermatomyositis or other polymyositis. The researchers excluded patients who had previously had hypogammaglobulinemia before using rituximab.

In this cohort, 26.9% of patients developed hypogammaglobulinemia, and 20.4% of patients developed an infectious complication within 18 months of beginning rituximab treatment. The infection was serious enough to require inpatient treatment in more than half of those who developed infections (57.9%).

Risk of new-onset hypogammaglobulinemia increased with decreasing age (P = .004), and males were more than four times more likely to develop the condition (odds ratio, 4.55; P = .012). Risk of an infection was also more likely among younger patients (OR, 0.87; P = .039).

Patients with vasculitis were fivefold more likely to develop the hypogammaglobulinemia than were those with other rheumatic diseases after the researchers accounted for age, sex, underlying disease, and medication use (OR, 5.04; P = .017). Risk was also greater in patients with exposure to cyclophosphamide in the year before starting rituximab (OR, 3.76; P = .032), although the finding narrowly reached statistical significance after adjustment for those covariates (OR, 4.41; P = .048).

Glucocorticoid treatment in the month before rituximab was associated with an elevated risk of hypogammaglobulinemia before adjustment (OR, 4.53; P = .007) but lost significance after adjustment. Those taking glucocorticoids had a greater than eightfold increase in infection risk (OR, 8.5; P = .006) before adjustment, which dropped to a fivefold risk after accounting for age, sex, underlying disease, and medication use (OR, 5.4; P = .040).

Monitoring needed for relatively common side effect

The findings are consistent with those seen in a cohort study conducted at Lurie Children’s Hospital of Chicago and published in 2019, said Amer M. Khojah, MD, an attending physician in allergy, immunology, and rheumatology at Lurie and an assistant professor of pediatrics at Northwestern University, also in Chicago. He was not involved in the current study.

“The main takeaway from this study is that we need to be careful about this side effect because it’s relatively common,” Dr. Khojah said in an interview.

At his institution, all patients undergo baseline labs to measure IgG levels prior to initiating rituximab and then have labs drawn again at 3 months and 1 year after starting the drug. Transient hypogammaglobulinemia may not require treatment, he said, but if it persists or the patient develops an infection, treatment with intravenous immunoglobulin is indicated. Yet the drug is so commonly used across a wide range of specialties that there’s a great deal of variability in clinical practice in terms of monitoring and follow-up, Dr. Khojah said.

“The problem is, if you don’t measure it, the patient might be get hypogammaglobulinemia and you don’t know it,” potentially leading to infections that the physician may or may not hear about, he said. “If you are the one who gives them the rituximab, you need to make sure they don’t get the side effects” or that they receive treatment if they do, he said.

“These data are supportive of the necessity to follow patients closely for infection after rituximab, especially considering that many infections may be severe and require hospitalization,” Dr. McAtee said in an interview. “The period of immunosuppression and subsequent infection risk following rituximab, even after single courses, may last well beyond a year following a single course. This is particularly true in patients receiving concurrent immunosuppressive therapy.”

Dr. McAtee similarly published data this year finding frequent infections among young patients receiving rituximab. Hypogammaglobulinemia is already more likely in patients who require rituximab because of other immunosuppressive medication they often take, but the risk “jumped substantially following rituximab,” he said. In addition to patients with low levels of IgG, 41% of patients showed low levels of IgM in that study.

“Nearly a third of patients with normal baseline IgM had persistently low levels more than a year after rituximab, consistent with prolonged B-cell recovery,” Dr. McAtee said. “It is necessary to highlight the importance of IgM in these patients, as common strategies to treat hypogammaglobulinemia, specifically intravenous immunoglobulin, do not replete IgM.”

Neither Dr. Khojah nor Dr. McAtee saw the risk of hypogammaglobulinemia as a reason to avoid rituximab when indicated.

“It is often the best choice for patients whose diseases have not responded to first-line therapies,” Dr. McAtee said. “This and similar studies inform the risk-benefit decision that the medical team must make, as well as the medical surveillance to be considered for patients following a course of rituximab. Going forward, strategies to mitigate infection risk after rituximab, particularly in the first 3 months when they are most common, should be pursued.”

The research was funded by CARRA, which receives funding from the Arthritis Foundation. The authors did not note whether they had any disclosures. Dr. Khojah and Dr. McAtee had no disclosures.