Figure 3E shows that the GAP score (HR 1.474, 95% CI: 1.287–1.687, p < 0.001) and m6A regulator risk score (HR 1.420, 95% CI: 1.180–1.709, p < 0.001) remained IPF predictors. The BALF-derived GSE28221 series was used to perform univariate Cox regression analysis on the 33 m6A regulators extracted from the data set (Supplementary Figures S2A). YTHDC1 was a protective m6A regulator (p = 0.048). Here, YTHDC1 is linked to idiopathic pulmonary fibrosis.