A novel pathogenic germline mutation in the adenomatous polyposis coli gene in a Chinese family with familial adenomatous coli |
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Authors: | Shan-Shan Jiang Jian-Jun Li Yin Li Long-Jun He Qi-Jing Wang De-Sheng Weng Ke Pan Qing Liu Jing-Jing Zhao Qiu-Zhong Pan Xiao-Fei Zhang Yan Tang Chang-Long Chen Hong-Xia Zhang Guo-Liang Xu Yi-Xin Zeng Jian-Chuan Xia |
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Institution: | 1. Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China;2. Department of Endoscopy, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China |
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Abstract: | Familial adenomatous polyposis (FAP) is an autosomal dominant disease manifesting as colorectal cancer in middle-aged patients. Mutations of the adenomatous polyposis coli (APC) gene contribute to both FAP and sporadic or familial colorectal carcinogenesis. Here we describe the identification of the causative APC gene defects associated with FAP in a Chinese pedigree. All patients with FAP were diagnosed by their combination of clinical features, family history, colonoscopy, and pathology examinations. Blood samples were collected and genomic DNA was extracted. Mutation analysis of APC was conducted by targeted next-generation sequencing, long-range PCR and Sanger sequencing. A novel mutation in exon 14–15(c.1936-2148 del) and intron 14 of the APC gene was demonstrated in all FAP patients and was absent in unaffected family members. This novel deletion causing FAP in Chinese kindred expands the germline mutation spectrum of the APC gene in the Chinese population. |
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Keywords: | APC gene familial adenomatous polyposis exon deletion targeted next-generation sequencing chinese population |
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