ii) We did not perform pooled analyses of the potential risk factors [such as Antinuclear antibody (ANA) (6, 20, 28), HRCT pattern (6, 7), and Krebs Von den Lungen-6 (KL-6) (14, 24, 26, 31)] and outcomes of RP-ILD associated with recurrence, hospitalization, and mortality in some RP-ILD patients. The gene discussed is MUC1; the disease is interstitial lung disease.