NEJM 10 1 2026 Obexelimab for the Treatment of IgG4-Related Disease

This Week In Medicine · Oct 7, 2026 · 1m

A recent phase 3 clinical trial investigated obexelimab, a novel monoclonal antibody that suppresses B-cell function without destroying the cells, as a potential therapy for IgG4-related disease. Standard treatments typically rely on glucocorticoids, which often cause significant toxicity and frequently lead to relapses once stopped. To test the medication, 194 patients were randomly assigned to receive either weekly subcutaneous injections of obexelimab or a placebo while systematically tapering off steroids. The findings demonstrated that obexelimabsubstantially reduced the likelihood of…