Meningiomas with combined NF2/SMARCB1 mutations (2 genes in close physical proximity to one another on chromosome 22q) may be more commonly found along the anterior falx.39,45 Alterations in several meningioma driver genes (including NF2 and TRAF7) have also been found in normal leptomeninges with similar anatomic predilection.46 This evidence concerns the gene NF2 and meningioma.