All samples were sufficient for basic molecular analyses of isocitrate dehydrogenase 1/2, telomerase reverse transcriptase promoter, H3 histone family 3A, serine/threonine kinase B-RAF, and O-6-methylguanine deoxyribonucleic acid methyltransferase promoter methylation in gliomas and myeloid differentiation primary response gene 88 for PCNSLs. This evidence concerns the gene MARK2 and central nervous system cancer.