FCGR2A and ulcerative colitis: For example, FCGR2A‐131H has been associated with increased incidence of Graves' disease,88 ulcerative colitis,89, 90, 91 childhood immune thrombocytopenic purpura (ITP),83, 84, 85 and Kawasaki disease (KD),80, 81, 82 whereas FCGR2A‐131R has been associated with sepsis94, 95 and SLE.92, 93