ALDH1A1 and acute myeloid leukemia: Using this cohort, we demonstrate that mRNA expression of ALDH1A1 gene can be used to distinguish adverse from favourable risk and that altered ALDH1A1 gene group (92% with increased ALDH1A1 mRNA), confirming that AML that lacks expression of ALDH1A1 are favourable risk exhibit a lower overall survival rate than unaltered group.10