CCND1 and idiopathic pulmonary fibrosis: The GSE21610 dataset identified CCND1 (AUC = 0.954) and NAP1L3 (AUC = 0.877) as biomarkers with effective values for diagnosing HF, as shown in Fig. 7A. Similarly, the genes CCND1 and NAP1L3 showed robust predictive capacity for IPF (Fig. 7B).