SMARCB1 and Clear Cell Meningioma: In addition, mutations in the SMARCE1 gene (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily E, member 1) have been reported in clear cell meningioma, and mutations in the SMARCB1 gene (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily B, member 1) are involved in multiple meningiomas.