p53 dosage can impede KrasG12D- and KrasQ61R-mediated tumorigenesis.

Abstract excerpt

Mice engineered with a G12D versus Q61R mutation in Kras exhibited differences in tumorigenesis. Namely, the incidence or grade of oral or forestomach squamous epithelial lesions was more prevalent in the KrasG12D background while hematolymphopoietic disease was more prevalent in the KrasQ61R background. Loss of the Trp53 gene encoding the tumor suppressor p53 enhances the ability of oncogenic Kras to initiate...

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