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  • Title: Genetic heterogeneity and unmapped genes for colorectal cancer.
    Author: Lewis CM, Neuhausen SL, Daley D, Black FJ, Swensen J, Burt RW, Cannon-Albright LA, Skolnick MH.
    Journal: Cancer Res; 1996 Mar 15; 56(6):1382-8. PubMed ID: 8640829.
    Abstract:
    Colorectal cancer (CRC) has a strong familial component. Candidate genes for colorectal cancer have been identified through mutations in four mismatch repair genes (hMSH2, hMLH1, hPMS1, and hPMS2) and genes that are deleted or mutated in tumors (DCC, APC, and p53). Linkage analysis of candidate loci/regions was performed in 10 kindreds ascertained for common colorectal cancer from the Utah Population Database. Evidence for linkage to candidate genes was assessed using two- or three-point logarithm of the odds ratio scores with markers spanning the region of localization. One kindred is linked to hMSH2 and also fits the criteria for hereditary nonpolyposis colorectal cancer, having early age of onset and high penetrance for CRC. The remaining nine kindreds are unlinked to the candidate genes tested. These kindreds have a later age of onset and a lower penetrance than hereditary nonpolyposis colorectal cancer kindreds. these results indicate that further unmapped susceptibility loci may be responsible for much of the familial aggregation of CRC.
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