IDH2 and lung cancer: The nNGM (national Network Genomic Medicine lung cancer) demands the detection of defined areas including variant hot spots in 26 Genes (ALK, BRAF, CTNNB1, EGFR, ERBB2, FGFR1, FGFR2, FGFR3, FGFR4, HRAS, IDH1, IDH2, KEAP1, KRAS, MAP2K1, MET, NRAS, NTRK1, NTRK2, NTRK3, PIK3CA, PTEN, RET, ROS1, STK11, TP53).