Germline mutations in NF1 and BRCA1 in a family with neurofibromatosis type 1 and early-onset breast cancer.

Abstract:

:Neurofibromatosis type 1 (NF1) is a common dominant autosomal disorder caused by mutations in the NF1 gene. The main manifestations of NF1 are café-au-lait spots, neurofibromas, intertriginous freckling, Lisch nodules, and malignancy, including peripheral nerve sheath tumors, central nervous system gliomas, and a variety of other tumors not so clearly defined. The association between NF1 and breast cancer or other gynecologic malignancies seems uncommon and has been scarcely referred in the literature. We describe a family with two females affected by both NF1 and early-onset breast cancer, and a male with NF1. We evaluated whether the concomitance of both disorders could be attributed to a NF1 mutation and its supposed increased risk of breast cancer or to the concurrence of two NF1 and BRCA1/2 germline mutations. Mutation analyses identified a frameshift mutation in BRCA1 and a nonsense mutation in NF1. Our findings stress the importance of considering all phenotypic features in families with both NF1 and breast tumors. To offer a specific risk assessment and management of both conditions, NF1 and BRCA1/2 cancer predisposing genes should be analyzed.

authors

Campos B,Balmaña J,Gardenyes J,Valenzuela I,Abad O,Fàbregas P,Volpini V,Díez O

doi

10.1007/s10549-013-2538-6

subject

Has Abstract

pub_date

2013-06-01 00:00:00

pages

597-602

issue

2

eissn

0167-6806

issn

1573-7217

journal_volume

139

pub_type

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