While that study primarily highlighted molecular effects of nintedanib in the context of lung fibrosis amelioration, RNA sequencing data revealed the upregulation of genes such as Kruppel-like factor 4 (KLF4) and ETS transcription factor 6 (ETV6), both of which are mechanistically linked to VEGF regulation and expression [57,58]. Here, KLF4 is linked to pulmonary fibrosis.