In T‐LBL or T‐ALL, GRIK2 (6q16.3), CASP8AP2 (6q15‐16.1), and EPHA7 (6q16.1) were reported as candidates for tumor suppressor genes in this deletion region, but it is unclear whether they are involved in the difference between LBL and ALL.24, 25, 26. Here, CASP8AP2 is linked to acute lymphoblastic leukemia.