In the setting of multiple meningiomas, although NF2-SWN is the most common tumour predisposition condition for people with ≥ 2 meningiomas before age 40, peripheral schwannomas and intracranial meningiomas can be seen in the chromosome 22 condition SMARCB1-SWN. The gene discussed is SMARCB1; the disease is intracranial meningioma.