KRT88P and rheumatoid arthritis: Among the recent studies, the Italian study by Varisco et al. demonstrated a low risk of reactivation in occult infection, examining 33 RA patients who were HbsAg-negative and anti-HBc-positive patients with undetectable HBV DNA who underwent a median of three cycles of RTX over 34 months in association with DMARD without prophylaxis [34].