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"DGGE screening of mutations in mismatch repair genes (hMSH2 and hMLH1) in 34 Swedish families with colorectal cancer."

Liu T, Wahlberg S, Rubio C, Holmberg E, Gronberg H, Lindblom A



Published Jan. 1, 1998 in Clin Genet volume 53 .

Pubmed ID: 9611074

Abstract:
Hereditary non-polyposis colorectal cancer (HNPCC) is an autosomal dominantly inherited syndrome which confers an increased risk for colorectal cancer and endometrial cancer as well as other tumors. It is caused by germline DNA mismatch repair (MMR) gene mutations in five MMR genes, hMSH2, hMLH1, hPMS1, hPMS2 and hMSH6. Finding mutations in these high risk families means that you can offer presymptomatic carrier diagnosis and thereby identify individuals with a very high risk for cancer. These persons benefit from counseling and should be offered surveillance. We have used DGGE to screen members from 34 families for mutations in hMLH1 and hMSH2. Six mutations in five families were found, five of these mutations are new. Besides, three new polymorphisms were identified. The mutations were found in two of seven Amsterdam criteria HNPCC families and in three of four families with at least one case of early onset of CRC (before 35), suggesting there are appropriate families to be chosen for mutation screening in MMR genes.


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Last modification of this entry: Oct. 6, 2010

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