Deficient expression of DNA repair enzymes in early progression to sporadic colon cancer

Abstract excerpt

BACKGROUND: Cancers often arise within an area of cells (e.g. an epithelial patch) that is predisposed to the development of cancer, i.e. a "field of cancerization" or "field defect." Sporadic colon cancer is characterized by an elevated mutation rate and genomic instability. If a field defect were deficient in DNA repair, DNA damages would tend to escape repair and give rise to carcinogenic mutations. PURPOSE:...

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