KRAS and acute promyelocytic leukemia: It was also determined that cell death was not induced in several KRAS wild-type/mutant leukemia cell types, Jurkat (acute T-cell leukemia, RAS wild-type), THP-1 (NRAS G12D), K562 (chronic myeloid leukemia, RAS wild-type), or NB-4 (acute promyelocytic leukemia M3, KRAS A18D) cells.