Low mutation rate of hMSH2 and hMLH1 in Taiwanese hereditary non-polyposis colorectal cancer
| العنوان: | Low mutation rate of hMSH2 and hMLH1 in Taiwanese hereditary non-polyposis colorectal cancer |
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| المؤلفون: | Jau-Min Wong, Yu Cy, Su Yn, Shu-Chen Wei, Jyy-Jih Tsai-Wu, Wang Cy, Wu Ch, Jin-Chuan Sheu |
| المصدر: | Clinical Genetics. 64:243-251 |
| بيانات النشر: | Wiley, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Genetics, congenital, hereditary, and neonatal diseases and abnormalities, Mutation rate, Mutation, Amsterdam criteria, nutritional and metabolic diseases, Biology, Gene mutation, medicine.disease_cause, digestive system diseases, Genetic determinism, Frameshift mutation, Exon, medicine, DNA mismatch repair, neoplasms, Genetics (clinical) |
| الوصف: | Hereditary non-polyposis colorectal cancer (HNPCC), the most common type of hereditary colorectal cancer, is thought to be a simple Mendelian disease involving DNA mismatch repair genes. The majority of mutations associated with HNPCC occur in the hMSH2 and hMLH1 genes. The reported incidence of mismatch repair gene mutations in HNPCC kindreds varies considerably (from 22 to 86%), and most mutations are unique. This study aimed to determine the genetic basis of Taiwanese HNPCC kindreds, focusing on the two major genes involved in this disease. A total of 15 Taiwanese HNPCC kindreds meeting the Amsterdam criteria, including 72 affected individuals among a total of 266 individuals, were analyzed using both RNA- and DNA-based methods. The mutation rate of hMSH2 and hMLH1 in these 15 kindreds was 0% and 20%, respectively, which is lower than that reported in other countries. Two novel mutations were discovered in hMLH1: one was an allelic loss of a 5.2-kb genomic fragment causing exon 16 deletion; and the other was a two-nucleotide deletion that resulted in a frameshift mutation of exon 3. We also identified one hMLH1 exon 4 mutation (a C to T transition in codon 117), which had been reported previously in western countries. This is the first genetic study of HNPCC from Taiwan. |
| تدمد: | 1399-0004 0009-9163 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::8a5f236040d93628e97847abae4a7ea5 https://doi.org/10.1034/j.1399-0004.2003.00123.x |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........8a5f236040d93628e97847abae4a7ea5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13990004 00099163 |
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