FAP and non-small cell lung carcinoma: The overexpression of phosphatidylethanolamine‐binding protein 4 (PEBP4) promotes NSCLC cell proliferation and EMT by regulating the HH pathway (50) while fibroblast activation protein α (FAPα) promoted LSCC cell growth, adhesion, and migration in vitro via the PI3K and HH pathways (51).