Comprehensive application of various screening strategies of Lynch syndrome
10.3760/cma.j.issn.1671-0274.2019.07.016
- VernacularTitle: 林奇综合征的筛查策略和综合应用
- Author:
Xianhua GAO
1
;
Wei ZHANG
1
;
Lianjie LIU
1
;
Hongli YAN
2
Author Information
1. Department of Colorectal Surgery of Changhai Hospital, Shanghai 200433, China
2. Department of Reproductive Medicine Center of Changhai Hospital, Shanghai 200433, China
- Publication Type:Review
- Keywords:
Hereditary colorectal cancer;
Lynch syndrome;
Deficient mismatch repair (dMMR);
Microsatellite instability (MSI);
Screening criteria
- From:
Chinese Journal of Gastrointestinal Surgery
2019;22(7):684-688
- CountryChina
- Language:Chinese
-
Abstract:
Lynch syndrome (LS), which is the most common hereditary colorectal cancer, accounts for about 3% of all colorectal cancers. However, due to its various clinical manifestations, it is difficult to be diagnosed. The diagnosis of LS requires comprehensive application of various screening criteria (such as the Amsterdam criteria, Bethesda criteria), predictive models, risk factors, immunohistochemistry test of mismatch repair (MMR) protein, microsatellite instability (MSI) detection, MLH1 methylation detection, BRAF gene mutation detection, germline gene mutation detection, and so on. LS can be diagnosed only after the identification of pathogenic germline mutation of MMR gene. The first-degree and second-degree relatives of LS patients are recommended to be tested for the identified mutant gene. For LS patients and gene mutation carriers, LS associated cancer can be detected early or even prevented by monitoring and preventive surgery. Reproductive techniques can be used to prevent this disease from being passed down to the next generation.
