HLA-DQA1*05 ASSOCIATES WITH IMMUNOGENICITY AND LOSS OF RESPONSE TO ANTI-TNF THERAPY IN THE IBD POPULATION: A META-ANALYSIS

The human leukocyte antigen (HLA) allele group HLA-DQA1*05 has been associated with the development of antidrug antibodies (ADA) to tumor necrosis factor antagonists (anti-TNF)1 in the inflammatory bowel disease (IBD) population, except in the setting of proactive optimization2. We performed a meta-analysis to determine the prevalence of HLADQA1*05 carriage, to define the association of HLA-DQA1*05 on immunogenicity and loss of response (LOR) to anti-TNF, and to explore the impact of therapeutic drug monitoring (TDM) on this association.

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