HLA DQA1*05 and risk of anti-TNF treatment failure and anti-drug antibody development in children with Crohn's Disease: HLA DQA1*05 and Pediatric Crohn's Disease
Document Type
Journal Article
Publication Date
10-18-2024
Journal
The American journal of gastroenterology
DOI
10.14309/ajg.0000000000003135
Abstract
OBJECTIVES: HLA DQA1*05 has been associated with the development of anti-drug antibodies (ADA) to tumor necrosis factor antagonists (anti-TNF) and treatment failure among adults with Crohn's disease (CD). However, findings from other studies have been inconsistent with limited pediatric data. METHODS: We analyzed banked serum from patients with CD < 21 years of age enrolled in COMBINE, a multi-center, prospective randomized trial of anti-TNF monotherapy vs. combination with methotrexate. The primary outcome was a composite of factors indicative of treatment failure. The secondary outcome was ADA development. RESULTS: A trend towards increased treatment failure among HLA DQA1*05 positive participants was not significant (HR 1.58, 95% CI 0.95-2.62; p=0.08). After stratification by HLA DQA1*05 and by methotrexate vs. placebo, patients who were HLA DQA1*05 negative and assigned to methotrexate experienced less treatment failures than HLA DQA1*05 positive patients on placebo (HR 0.31, 95% CI 0.13-0.70; p=0.005).A trend toward increased ADA development among HLA DQA1*05 positive participants was not significant (odds ratio [OR] 1.96, 95% CI 0.90-4.31, p=0.09). After further stratification, HLA DQA1*05 negative participants assigned to methotrexate were less likely to develop ADA relative to HLA DQA1*05 positive patients on placebo (OR 0.12, 95% CI 0.03-0.55; p=0.008). CONCLUSIONS: In a randomized trial of children with CD initiating anti-TNF, 40% were HLA DQ-A1*05 positive, which was associated with a trend toward increased risk of both treatment failure and ADA. These risks were mitigated, but not eliminated, by adding oral methotrexate. HLA DQ-A1*05 is an important biomarker for prognosis and risk stratification.
APA Citation
Adler, Jeremy; Galanko, Joseph A.; Ammoury, Rana; Benkov, Keith J.; Bousvaros, Athos; Boyle, Brendan; Cabrera, José M.; Chun, Kelly Y.; Dorsey, Jill; Ebach, Dawn R.; Firestine, Ann M.; Gulati, Ajay S.; Herfarth, Hans H.; Jester, Traci W.; Kaplan, Jess L.; Leibowitz, Ian; Linville, Tiffany M.; Margolis, Peter A.; Minar, Phillip; Molle-Rios, Zarela; Moses, Jonathan; Olano, Kelly; Pashankar, Dinesh S.; Pitch, Lisa; Saeed, Shehzad A.; Samson, Charles M.; Sandberg, Kelly; Steiner, Steven J.; Strople, Jennifer A.; Sullivan, Jillian S.; Wali, Prateek D.; and Kappelman, Michael D., "HLA DQA1*05 and risk of anti-TNF treatment failure and anti-drug antibody development in children with Crohn's Disease: HLA DQA1*05 and Pediatric Crohn's Disease" (2024). GW Authored Works. Paper 5813.
https://hsrc.himmelfarb.gwu.edu/gwhpubs/5813
Department
Pediatrics