According to Harigai et al. [22], another study evaluated the risk of HBV reactivation in RA patients with negative HBsAg and anti-HBs positivity and/or anti-HBc positivity treated with corticosteroids (≥5 mg prednisolone or its equivalent dose), DMARDs and/or bDMARDs, [12]. The gene discussed is KRT88P; the disease is rheumatoid arthritis.