TP53TG1 and idiopathic pulmonary fibrosis: LncRNA RP11−395B7.4, TBX2−AS1, STARD13−AS, TP53TG1, and ZNF561−AS1 with top degree were significantly down-regulated in IPF fibroblasts compared with normal fibroblasts (P-value < 0.05, Student’s t-test, Fig. 3b).