IFIH1 and myositis disease: For myositis-specific autoantibodies, there was 1 positive case (anti-MDA5 antibody) in the AFOP group and 11 positive cases in the non-AFOP group (EJ: 2 cases, Jo-1: 2, MDA5: 2, PL-7: 1, PM-Scl75: 1, OJ: 1, SRP: 1, and Mi-2: 1).