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Diagnosis of Lynch Syndrome Based on Next-generation Sequencing in Colorectal Cancer

Lynch Syndrome Clinical Trial

Official title:
Diagnosis of Lynch Syndrome Based on the Colorectal Core™ Platform in Colorectal Cancer Patients With the Loss of Staining by Immunohistochemistry (IHC) of Any of the Mismatch Repair (MMR) Proteins: An Open-label and Multi-center Study

Clinical Trial Summary

The purpose of this study is to determine the proportion of patients diagnosed with Lynch syndrome in colorectal cancer patients with the loss of staining by immunohistochemistry (IHC) of any of the mismatch repair (MMR) proteins. Besides, this study aims to test the specificity and the sensitivity of detecting microsatellite instability (MSI) by next-generation sequencing, and to find out the consistency between IHC and MSI in colorectal cancer patients in China. In addition, researchers want to analyze the clinical characteristics and germline mutation of Lynch syndrome in Chinese population.

Clinical Trial Description

1. Detect microsatellite instability (by next-generation sequencing and PCR capillary electrophoresis) and germline mutation (by next-generation sequencing) in probands. 2. Analyze the test outcome with clinical and family information to evaluate the germline mutation status preliminarily: likely pathogenic germline mutation, variant of uncertain significance, non-pathogenic germline mutation. 3. Verify the germline mutation in blood relatives whose proband has known likely pathogenic germline mutation or variant of uncertain significance. 4. Diagnose pathogenic germline mutation and non-pathogenic germline mutation based on clinical characteristics, family information and germline mutation test outcomes (including the outcomes of probands and blood relatives). Diagnose Lynch syndrome and the pathogenic germline mutation carriers in the included population. 5. Analyze the specificity and the sensitivity of detecting microsatellite instability (MSI) by next-generation sequencing; and analyze the consistency between IHC and MSI. 6. Analyze the clinical characteristics and germline mutation of Lynch syndrome in Chinese population. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03047226
Study type Observational
Source Second Affiliated Hospital, School of Medicine, Zhejiang University
Contact
Status Completed
Phase
Start date February 28, 2017
Completion date July 31, 2018
View Details
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