TAF9 and systemic lupus erythematosus: In addition, the IgG antibody responses to CMVpp65 and the human TAF9 protein were evaluated using the sera from rheumatic patients with CMV IgG-positive statuses, including SLE (n = 163), SS (n = 64), RA (n = 76), gout (n = 70), and AS (n = 52).