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- Title
The Novel Germline Mutation of hMSH2 Gene in a Case of a Hereditary Non-polyposis Colorectal Cancer (HNPCC) Patient Who Meets the Revised Amsterdam Criteria.
- Authors
Tomita, Naohiro; Fukunaga, Mutsumi; Ohzato, Hiroki; Tamura, Shigeyuki; Sugimoto, Keishi; Aihara, Tomohiko; Miki, Hirofumi; Takatsuka, Yuuichi; Matsuura, Nariaki; Iwanaga, Takeshi; Fukayama, Noriko; Sugano, Kokichi
- Abstract
Hereditary non-polyposis colorectal cancer (HNPCC) is a very important clinical entity in oncology. In order to identify HNPCC, the international diagnostic criteria named ‘Amsterdam criteria’ have been used. In this report, we present a case of an HNPCC patient who met the revised Amsterdam criteria after the sequential history taking in which a novel germline mutation of hMSH2 gene was detected by genetic testing. The proband was a 69-year-old Japanese female who was admitted to our hospital with a diagnosis of advanced ascending colon cancer. Microsatellite instability (MSI) analysis revealed high MSI in the resected tumor tissue. PCR/direct sequencing analysis of the genomic DNA revealed the TTG(Leu) to TAG(Stop) nonsense mutation at codon 302 in exon 5 of the hMSH2 gene, which was considered to be a pathogenic mutation. According to the Human Mutation Database and International Collaborative Group on HNPCC (ICG-HNPCC) Database, this type of nonsense mutation is the first report in the hMSH2 gene.
- Publication
Japanese Journal of Clinical Oncology, 2003, Vol 33, Issue 9, p486
- ISSN
0368-2811
- Publication type
Article
- DOI
10.1093/jjco/hyg082