NF2 and meningioma: Among these genes, NF2 frameshift mutation (c.503delC:p.K170Rfs*43) in M1 and CREBBP frameshift mutation (c.3923delT:p.L1308Cfs*30) in M2 were highlighted upon comparison with previously published data on genes mutated in at least two cases of meningiomas (Fig. 2b) [16].