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Psoriasis Associated With Tumor Necrosis Factor Inhibitors in Children With Inflammatory Diseases
Lisa H Buckley1, Rui Xiao2, Marissa J Perman3
1Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, and Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee.
Insights
Children with inflammatory bowel disease (IBD), juvenile idiopathic arthritis (JIA), and chronic noninfectious osteomyelitis (CNO) have a higher incidence of psoriasis, especially when treated with tumor necrosis factor inhibitors (TNFi). This study quantifies this increased risk.
Area of Science:
- Pediatric Rheumatology
- Dermatology
- Gastroenterology
Background:
- Psoriasis incidence is elevated in pediatric patients with IBD, JIA, and CNO.
- The role of tumor necrosis factor inhibitors (TNFi) in the development of psoriasis in these pediatric populations requires further investigation.
Purpose of the Study:
- To estimate the incidence rate (IR) of psoriasis in children with IBD, JIA, and CNO.
- To compare psoriasis incidence between children exposed to TNFi and those not exposed.
- To compare psoriasis incidence in these pediatric cohorts to the general pediatric population.
Main Methods:
- Retrospective cohort study of 4,111 children diagnosed with IBD, JIA, or CNO between 2008 and 2018.
- TNFi exposure defined by prescription of specific biologic agents (adalimumab, etanercept, infliximab, certolizumab, golimumab).
- Incident psoriasis was the primary outcome, with IRs, standardized incidence ratios (SIRs), and Cox proportional hazards models used for analysis.
Main Results:
- Children with TNFi exposure had a significantly higher incidence of psoriasis (12.3 per 1,000 person-years) compared to those without TNFi exposure (3.8 per 1,000 person-years).
- The standardized incidence ratio (SIR) for psoriasis was 18 overall, with higher rates in the TNFi-exposed group (SIR 30) versus the unexposed group (SIR 9.3).
- TNFi exposure was associated with a 3.84-fold increased hazard of developing psoriasis (95% CI 2.28-6.47; P < 0.001).
Conclusions:
- Pediatric patients with IBD, JIA, and CNO exhibit an increased incidence of psoriasis compared to the general pediatric population.
- TNFi therapy in these pediatric cohorts is associated with a substantially higher risk of developing psoriasis.
- Further research is warranted to understand the mechanisms and management strategies for psoriasis in pediatric patients on TNFi therapy.
Objective:
To estimate the incidence rate (IR) of psoriasis in children with inflammatory bowel disease (IBD), juvenile idiopathic arthritis (JIA), and chronic noninfectious osteomyelitis (CNO) with tumor necrosis factor inhibitor (TNFi) exposure as compared to children without TNFi exposure and to the general pediatric population.
Methods:
This was a single-center retrospective cohort study of children with IBD, JIA, or CNO from 2008 to 2018. TNFi exposure was defined as a prescription for adalimumab, etanercept, infliximab, certolizumab, or golimumab, and the primary outcome was incident psoriasis. IRs and standardized incidence ratios (SIRs) were calculated. Cox proportional hazards models were used to assess the association of psoriasis with TNFi exposure and other risk factors.
Results:
Of the 4,111 children who met inclusion criteria, 1,614 (39%) had TNFi exposure and 2,497 (61%) did not, with 4,705 and 6,604 person-years of follow-up, respectively. There were 58 cases (IR 12.3 per 1,000 person-years) and 25 cases (IR 3.8 per 1,000 person-years) of psoriasis in children with and without TNFi exposure, respectively. The SIR was 18 (95% confidence interval [95% CI] 15-22) overall, 30 (95% CI 23-39) for children with TNFi exposure, and 9.3 (95% CI 6.3-14) for children without TNFi exposure. The hazard ratio of psoriasis comparing TNFi exposure to no TNFi exposure was 3.84 (95% CI 2.28-6.47; P < 0.001).
Conclusion:
Children with IBD, JIA, and CNO had an increased rate of psoriasis compared to the general pediatric population, with the highest rate in those with TNFi exposure.
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