MGMT and glioblastoma: Several recent studies show that MGMT pyrosequencing is a robust technique that offers valid, reliable and quick evaluation of the MGMT promoter methylation status from formalin-fixed and paraffin-embedded glioblastoma specimens and is therefore a rational candidate method for clinical purposes [7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33].