[Malignant mesothelioma and constitutional BAP1 gene mutations]

Area of Science:

• Oncology
• Genetics
• Molecular Biology

Background:

• Malignant mesothelioma is a rare cancer often linked to asbestos exposure.
• Familial cases of mesothelioma are associated with constitutional mutations of the BAP1 gene.
• The BAP1 gene encodes a deubiquitinating enzyme involved in DNA repair and differentiation.

Purpose of the Study:

• To synthesize current literature on BAP1 gene function.
• To review tumor risks associated with BAP1 alterations.
• To discuss the follow-up of patients with constitutional BAP1 mutations.

Main Methods:

• Literature synthesis and review.
• Analysis of BAP1 gene function and mutation data.
• Compilation of tumor risks linked to BAP1 alterations.

Main Results:

• Somatic, bi-allelic BAP1 inactivation occurs in about half of malignant mesotheliomas.
• Constitutional BAP1 alterations, though rare, are autosomal dominant and increase risk for mesothelioma, uveal/cutaneous melanomas, and clear cell renal carcinomas.
• The causal link between germline BAP1 mutations and mesothelioma requires further investigation.

Conclusions:

• Constitutional BAP1 mutations confer a significant risk for multiple cancer types.
• There is a lack of established clinical management guidelines for patients with constitutional BAP1 mutations in France.
• Further research is needed to clarify the role of germline BAP1 mutations in mesothelioma development and to establish patient management protocols.