PIK3CA and lung cancer: Known lung cancer genes (EGFR, KRAS G12C, ALK, MET, RET) were found in 33 patients; 11 had genes relevant to both lung and other cancers (ERBB2, BRAF V600, NTRK), and 37 had genes typically linked to other malignancies (NF1, PIK3CA, PALB2, FGFR2B, FBX7, RAD51).