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BAP1 cancer syndrome: malignant mesothelioma, uveal and cutaneous melanoma, and MBAITs

Powers, A and Bryant-Greenwood, P and Krausz, T and Hyjek, E and Tate, R and Friedberg, J and Weigel, T and Pass, HI and Yang, H (2012) BAP1 cancer syndrome: malignant mesothelioma, uveal and cutaneous melanoma, and MBAITs. Journal of Translational Medicine, 10 (1).

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Abstract

Background: BRCA1-associated protein 1 (BAP1) is a tumor suppressor gene located on chromosome 3p21. Germline BAP1 mutations have been recently associated with an increased risk of malignant mesothelioma, atypical melanocytic tumors and other neoplasms. To answer the question if different germline BAP1 mutations may predispose to a single syndrome with a wide phenotypic range or to distinct syndromes, we investigated the presence of melanocytic tumors in two unrelated families (L and W) with germline BAP1 mutations and increased risk of malignant mesothelioma.Methods: Suspicious cutaneous lesions were clinically and pathologically characterized and compared to those present in other families carrying BAP1 mutations. We then conducted a meta-analysis of all the studies reporting BAP1-mutated families to survey cancer risk related to the germline BAP1 mutation (means were compared using t-test and proportions were compared with Pearson χ2 test or two-tailed Fisher's exact test).Results: Melanocytic tumors: of the five members of the L family studied, four (80%) carried a germline BAP1 mutation (p.Gln684*) and also presented one or more atypical melanocytic tumors; of the seven members of W family studied, all carried a germline BAP1 mutation (p.Pro147fs*48) and four of them (57%) presented one or more atypical melanocytic tumors, that we propose to call " melanocytic BAP1-mutated atypical intradermal tumors" (MBAITs). Meta-analysis: 118 individuals from seven unrelated families were selected and divided into a BAP1-mutated cohort and a BAP1-non-mutated cohort. Malignant mesothelioma, uveal melanoma, cutaneous melanoma, and MBAITs prevalence was significantly higher in the BAP1-mutated cohort (p ≤ 0.001).Conclusions: Germline BAP1 mutations are associated with a novel cancer syndrome characterized by malignant mesothelioma, uveal melanoma, cutaneous melanoma and MBAITs, and possibly by other cancers. MBAITs provide physicians with a marker to identify individuals who may carry germline BAP1 mutations and thus are at high risk of developing associated cancers. © 2012 Carbone et al.; licensee BioMed Central Ltd.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Powers, A
Bryant-Greenwood, P
Krausz, T
Hyjek, E
Tate, R
Friedberg, J
Weigel, T
Pass, HI
Yang, H
Date: 30 August 2012
Date Type: Publication
Journal or Publication Title: Journal of Translational Medicine
Volume: 10
Number: 1
DOI or Unique Handle: 10.1186/1479-5876-10-179
Schools and Programs: School of Medicine > Pathology
Refereed: Yes
Date Deposited: 29 Nov 2016 21:06
Last Modified: 12 Jan 2019 22:55
URI: http://d-scholarship.pitt.edu/id/eprint/29844

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