GRIK2 and acute lymphoblastic leukemia: 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