Using structural equation modeling to construct causal models of CIMP and locus-specific CpG island methylation and a large database of colorectal cancers, Tanaka et al. showed the correlation structures of 16 methylation markers and CIMP status differed between BRAF mutated, KRAS mutated, and wildtype BRAF/KRAS tumors [35]. This evidence concerns the gene KRAS and colorectal cancer.