DPP4 and non-small cell lung carcinoma: Consequently, five ferroptosis-related genes (FANCD2, GCLC, SLC7A11, ALOX15, and DPP4) were discovered to be expressed differentially and to have an impact on immune-related pathways in NSCLC, confirming a putative correlation between ferroptosis and NSCLC and revealing new insights on ferroptosis for NSCLC clinical immunotherapy [72].