NF2 GA were found as the most frequent GA in asbestos nonexposed patients with a third of the patients carrying NF2 mutations.26NF2 GA are less frequent in ovarian serous carcinoma, glioblastoma multiforme, breast, colorectal, skin, hepatic, medullary thyroid, prostate cancer, and melanoma.10 This evidence concerns the gene NF2 and Familial prostate cancer.