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Somatic mutations of the β-TrCP gene in gastric cancer

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Kim CJ, Song JH, Cho YG, Kim YS, Kim SY, Nam SW, Yoo NJ, Lee JY, Park WS. Somatic mutations of the β-TrCP gene in gastric cancer. APMIS 2007;115:127–33.

Beta-TrCP is a component of the ubiquitin ligase complex targeting β-catenin for proteasomal degradation, and is a negative regulator of Wnt/β-catenin signaling. To determine whether genetic alterations of the β-TrCP gene are involved in the development or progression of gastric cancer, we analyzed its somatic mutations in 95 gastric cancers by single-strand conformational polymorphism and sequencing. We found five missense mutations (5.3%): A99V, H342Y, H425Y, C206Y, and G260E. Tissue carrying mutations showed moderate to strong cytoplasmic and/or nuclear staining of β-catenin by immunohistochemistry. Thus, somatic mutations of the β-TrCP gene may contribute to the development of gastric cancer through β-catenin stabilization.
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Keywords: Gastric cancer; Wnt signal; beta-catenin; immunohistochemistry; mutation

Document Type: Research Article

Affiliations: 1: Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul and 2: Department of Pathology, College of Medical School, Cheju National University, Jeju-do, Korea

Publication date: 2007-02-01

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