TP53 and neoplasm: Note that these grading results for K‐only tumors are lower than those observed in the KrasLSL‐G12D/+; p53fl/fl (KP) tumors from sgNf1.3 mice (Fig 1D), which can likely be attributed to the tumor‐suppressive effects of p53 expression in the K‐only autochthonous tumors.