Another study assessed the levels of C-reactive protein (CRP), antimicrobial antibodies, autoantibodies (such as IgA-, IgM-, and IgG-class rheumatoid factors (RF)), and antibodies to cyclic citrullinated peptide (anti-CCP) in 22 patients with RA treated with RTX. The gene discussed is CD79A; the disease is rheumatoid arthritis.