Several studies have found that the WT allele corresponding to the specific mutated RAS gene (WT HRAS in HRAS-mutated cancers [22,23]; WT NRAS in NRAS-mutated cancers [24,25]; WT KRAS in KRAS-mutated cancers [23,26,27,28,29,30]) suppresses tumorigenesis. This evidence concerns the gene HRAS and cancer.