#0513 🔬 Rituximab in RA: IgG levels & infection ➡️ 164 patients (mean age 59, IgG 14g/L, dx duration 13yrs) 🧬 IgG levels ⬇️over time (6 years/25 infusions) ⚠️ Infection-related hospitalizations peaked year 1 ⬆️risk w/ concurrent steroid(HR 2.1,p=0.002) #ACR24 @RheumNow