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A new double substitution mutation in the MEN1 gene: a limited penetrance and a specific phenotype.


ABSTRACT: Multiple endocrine neoplasia type 1 (MEN1) is an autosomal-dominant cancer syndrome that is caused by a germline mutation in the MEN1 gene encoding a tumour-suppressor protein, menin. MEN1 causes a combination of endocrine tumours such as parathyroid adenomas, pituitary adenomas, glucagonomas, gastrinomas, insulinomas, adrenocortical adenomas and non-endocrine tumours. We here present a large MEN1 family where the carriers developed mild hyperparathyroidism, multiple well-differentiated functionally active neuroendocrine tumours of the pancreas and no pituitary tumour. The causal mutation is a new double substitution in the coding region of exon 2 in the MEN1 gene c.[428T>A; 429C>T], p.Leu143His. This new mutation in the MEN1 gene is clinically relevant leading to a limited penetrance and specific phenotype.

SUBMITTER: Ullmann U 

PROVIDER: S-EPMC3658184 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature

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A new double substitution mutation in the MEN1 gene: a limited penetrance and a specific phenotype.

Ullmann Urielle U   Unuane David D   Velkeniers Brigitte B   Lissens Willy W   Wuyts Wim W   Bonduelle Maryse M  

European journal of human genetics : EJHG 20121128 6


Multiple endocrine neoplasia type 1 (MEN1) is an autosomal-dominant cancer syndrome that is caused by a germline mutation in the MEN1 gene encoding a tumour-suppressor protein, menin. MEN1 causes a combination of endocrine tumours such as parathyroid adenomas, pituitary adenomas, glucagonomas, gastrinomas, insulinomas, adrenocortical adenomas and non-endocrine tumours. We here present a large MEN1 family where the carriers developed mild hyperparathyroidism, multiple well-differentiated function  ...[more]

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