Nguyen 2015.

Study characteristics
Study design	Cohort
Study setting	Setting: Oncological Centre, University Hospital of Strasbourg Country: France Dates: cases treated and followed up between 2006 and 2010
Selection of participants	Participants aged > 18 years with treatment‐naive GBM
Participant characteristics	Sample size: 106 (deaths: NR) Age: median NR, SD NR; aged ≥ 50 years: 78%, aged < 50 years: 22% Sex: 63% men KPS: NR
Tumour characteristics	GBM: 100% First diagnosis: 100% Biopsy: 12%; subtotal resection: 34%; total resection: 34%; gross‐total (no residual tumour on MRI), subtotal (residual tumour on MRI) IDH1 wild‐type: 98%; IDH2 wild‐type: NR
Treatment regimen	Stupp protocol
MGMT promoter methylation tests implemented	FSQ‐MS‐PCR
Dates and follow‐up	Timing of MGMT assessment: at diagnosis Start time for follow‐up: NR; follow‐up: median 17.4; range 2–92.8 months
Notes