When they were included into the multivariate equation, BAFF > 2971.5 pg/mL was an independent risk factor for RP-ILD in anti-MDA5+DM patients (OR = 9.389, 95% CI = 1.609–54.769; p = 0.013) (Table 3). This evidence concerns the gene TNFSF13B and dermatomyositis.