TTF1 and non-small cell lung carcinoma: The other subtype displayed NSCLC-like features with intact TP53/RB1 function, NOTCH mutations, and genes commonly found in NSCLC such as STK11/KRAS/TTF1 mutations resembling adenocarcinoma or KEAP1 mutations resembling squamous cell carcinoma, or SOX2/FGFR1 amplification.