Furthermore, 6 months after rituximab treatment, mean glucocorticoid dosage was below 10 mg/d for all patient groups (RA 5.6 mg/d, GPA 6.4 mg/d, CTD 7.2 mg/d), except for EGPA (11.5 mg/d) and the cumulative glucocorticoid dosage was not different between GPA/MPA, RA, and CTD patients. The gene discussed is GYPA; the disease is rheumatoid arthritis.