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Pancreatic cancer and a novel MSH2 germline alteration.

ABSTRACT:

Objective

The objective of this study was to describe a novel MSH2 missense alteration cosegregating with pancreatic cancer.

Methods

The method used was an observational study of a kindred in which a novel MSH2 missense alteration was identified.

Results

We report a family in which a MSH2 P349L missense alteration is cosegregating with pancreatic cancers among 3 nonsmoking first-degree relatives. Lynch syndrome-related tumors from individuals carrying this alteration consistently showed loss of immunohistochemical expression of MSH2, and in silico analyses support the interpretation of this DNA alteration as likely pathogenic.

Conclusions

The MSH2 P349L may increase the risk for pancreatic cancer beyond the usual mutations in DNA mismatch repair genes; however, studies of additional families with the identical missense alteration are needed to confirm this initial impression.

SUBMITTER: Lindor NM

PROVIDER: S-EPMC3425611 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature

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Pancreatic cancer and a novel MSH2 germline alteration.

Lindor Noralane M NM Petersen Gloria M GM Spurdle Amanda B AB Thompson Bryony B Goldgar David E DE Thibodeau Stephen N SN

Pancreas 20111001 7

<h4>Objective</h4>The objective of this study was to describe a novel MSH2 missense alteration cosegregating with pancreatic cancer.<h4>Methods</h4>The method used was an observational study of a kindred in which a novel MSH2 missense alteration was identified.<h4>Results</h4>We report a family in which a MSH2 P349L missense alteration is cosegregating with pancreatic cancers among 3 nonsmoking first-degree relatives. Lynch syndrome-related tumors from individuals carrying this alteration consis ...[more]

PMID: 21926548

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