Fourteen meningiomas (63%) had NF2 alterations, consisting of: (i) NF2 mutations coupled with the deletion of the second allele in three cases (6M; 13M and 15M); (ii) monoallelic NF2 mutations in eight cases (2M, 4M, 9M, 10M, 14M, 16M, 18M and 22M); (iii) NF2 heterozygous deletion in three cases (3M, 5M, 17M) (Figure 1). The gene discussed is NF2; the disease is meningioma.