alexa Surveillance colonoscopy improves survival in a cohort of subjects with a single mismatch repair gene mutation.
Gastroenterology

Gastroenterology

Journal of Gastrointestinal & Digestive System

Author(s): Stupart DA, Goldberg PA, Algar U, Ramesar R

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Abstract OBJECTIVE: Previous studies have shown a benefit for surveillance colonoscopy in heterogeneous groups of subjects with suspected or proven hereditary nonpolyposis colon cancer. The aim of this study was to investigate whether surveillance colonoscopy improves the survival in subjects who all carry a single mismatch repair gene defect. METHOD: This is a prospective cohort study of 178 subjects who carry a mutation of the MLH1 gene in exon 13 (C1528T). They were offered surveillance colonoscopy between 1988 and 2006, and were followed up until September 2007. RESULTS: One hundred and twenty-nine subjects underwent surveillance colonoscopy, and 49 declined. After a median follow up of 5 years, colorectal cancer was diagnosed in 14/129 (11\%) subjects in the surveillance group and 13/49 (27\%) in the nonsurveillance group (P = 0.019). Cancers in the surveillance group were at an earlier stage than in the nonsurveillance group (P = 0.032). Death from colorectal cancer occurred in three of 129 (2\%) subjects in the surveillance group, and six of 49 (12\%) in the nonsurveillance group (P = 0.021). The Kaplan-Meyer estimates for median survival from birth were 78 years in the surveillance group, and 55 years in the nonsurveillance group (P = 0.024). The Kaplan-Meyer estimates for median colorectal cancer-free survival from birth were 73 years in the surveillance group and 47 years in the nonsurveillance group (P = 0.0089). CONCLUSION: Surveillance colonoscopy was associated with improved overall and colorectal cancer-related survival in subjects carrying a single mismatch repair gene mutation. This article was published in Colorectal Dis and referenced in Journal of Gastrointestinal & Digestive System

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