MUC1 and interstitial lung disease: Multivariate analysis revealed that positive non-Jo-1 antibodies (OR: 8.88, 95% CI: 1.243–63.462, p = 0.030), NLR (OR: 6.412, 95% CI: 1.166–35.255, p = 0.033), and serum KL-6 (OR: 27.796, 95% CI: 1.978–390.596, p = 0.014) were independent risk factors for PPF in patients with ASS-ILD.