MGMT and glioblastoma: The objective of the present study was the epidemiological evaluation of the methylation of the MGMT promoter in Peruvian patients with glioblastoma and the standardisation of the PCR technique in paraffin-embedded [formalin-fixed paraffin-embedded (FFPE)] samples from the Instituto Nacional de Enfermedades Neoplasicas (INEN) in Lima, Peru.