BRAF and colonic neoplasm: A promoter polymorphism in MLH1 (−93G > A) was associated with CIMP, MLH1 methylation, and BRAF mutations in unstable sporadic colon tumors and not in stable tumors, suggesting the genetic variant may be acting at a relatively late stage of carcinogenesis to drive CIMP-positive tumors down the microsatellite instability pathway [63].