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Zeng M, Yao X, Pan Y, Gu H, Xiong F, Yin X, Wu B, Chen T. A novel APC mutation associated with Gardner syndrome in a Chinese family. Gene 2024; 896:148051. [PMID: 38043837 DOI: 10.1016/j.gene.2023.148051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/19/2023] [Accepted: 11/29/2023] [Indexed: 12/05/2023]
Abstract
Gardner syndrome (GS) is a specific form of familial adenomatous polyposis (FAP), which manifests as colorectal polyps, multiple osteomas and soft tissue tumors, and in the oral cavity as osteomas of the jaws, odontomas, and abnormal tooth counts. The underlying cause of GS is attributed to mutations in the APC gene. Mutations in this gene disrupt the normal functioning of the protein and lead to the development of GS. To further investigate GS, a family affected by the syndrome was selected from Dongguan, Guangdong Province. The family members underwent a comprehensive survey, which involved collecting clinical data and peripheral venous blood samples. The samples were then used for genetic analysis. Whole exome sequencing (WES) and Sanger sequencing techniques were utilized to screen and identify specific mutation sites in the APC gene. The clinical findings for the GS family included the presence of gastrointestinal polyps and odontomas. After analyzing the genetic sequencing results, a novel mutation site c.4266dupA on the APC gene was found in the patients, which leading to the APC protein truncation. As a result of this study, it is suggested that odontoma may be an early indicator of GS. Additionally, the identification of this novel mutation site in the APC gene expands the known spectrum of genetic mutations associated with the disease. This discovery has significant implications for the early diagnosis of GS, thus enabling timely intervention to reduce the risk of developing colon cancer and other related diseases.
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Affiliation(s)
- Ming Zeng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; School of Stomatology, Southern Medical University, Guangzhou 510515, China
| | - Xinchen Yao
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; School of Stomatology, Southern Medical University, Guangzhou 510515, China
| | - Yuhua Pan
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Hongxiang Gu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastro Enterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Fu Xiong
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Guangzhou, Guangdong, China; Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xuemin Yin
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Buling Wu
- Shenzhen Stomatological Hospital (Pingshan), Southern Medical University, Shenzhen 518118, China.
| | - Ting Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
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