ETP-ALL subtype has the highest frequencies of SUZ12del (16.7%; p = 0.025), while CDKN2A/Bdel (p < 0.001), CASP8AP2del, LEF1del, PTENdel, and IL7Rmut, were not found in this subtype. The gene discussed is CDKN2A; the disease is acute lymphoblastic leukemia.