CDKN2A and neoplasm: The integrated diagnoses of the initial lesions (under consideration of the TERT promoter and CDKN2A/B deletion) were three CNS WHO grade 1 tumors (microcystic, meningothelial and papillary), one CNS WHO grade 2 tumor (atypical) and one anaplastic meningioma, CNS WHO grade 3.