What is the role of genetics in colon carcinogenesis?

Updated: Apr 15, 2020
  • Author: Tomislav Dragovich, MD, PhD; Chief Editor: N Joseph Espat, MD, MS, FACS  more...
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Answer

Other important genes in colon carcinogenesis include the KRAS oncogene, chromosome 18 loss of heterozygosity (LOH) leading to inactivation of SMAD4 (DPC4), and DCC (deleted in colon cancer) tumor suppression genes. Chromosome arm 17p deletion and mutations affecting the p53 tumor suppressor gene confer resistance to programmed cell death (apoptosis) and are thought to be late events in colon carcinogenesis.


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