In AML; FLT3 (4 times), DNMT3A (3), NPM1 (3), IDH2 (2), NRAS (2), TP53 (2), ASLX1 (2), IDH1 (1), EZH2 (1), TET2 (1), KRAS (1), and SF3B1 (1) mutations were detected. The gene discussed is TET2; the disease is acute myeloid leukemia.