Mutant Trp53-R172h Has Gain-Of-Unction Or Dominant-Negative Effects In Response To Different Hematopoietic Stressors In Mice

Introduction. Mutations in TP53 are common (~18%) in patients with myelodysplastic syndrome (MDS) and acute myeloid leukemia and often undergo loss of heterozygosity. Our understanding of the hematopoietic consequences of expressing mutant TP53-R175H, one of the most common mutations in MDS, is incomplete. In addition, whether TP53-R175H confers a loss-of-function, gain-of-function, or dominant-negative effect in response to chemotherapy has not been fully explored.