Kim 2016.

Study characteristics
Study design	Cohort
Study setting	Setting: University College of Medicine, Busan; Ungkyunkwan University School of Medicine, Changwon Country: South Korea Dates: tissue collected between 1997 and 2012
Selection of participants	Study set included FFPE brain tumour tissue diagnosed as GBM. All people underwent surgical resection or biopsy sampling of their tumours
Participant characteristics	Sample size: 104 (deaths: 79) Age: mean 51.4; range 26.4–87.2 years Sex: 55.8% men KPS: median NR; KPS ≥ 70: 71.2%; KPS < 70: 28.8%
Tumour characteristics	GBM: 100% First diagnosis: NR Biopsy: 4.8%; subtotal resection: 57.7%; total resection: 37.5% IDH1 wild‐type: NR; IDH2 wild‐type: NR
Treatment regimen	Concurrent TMZ chemoradiotherapy
MGMT promoter methylation tests implemented	MSP, PSQ
Dates and follow‐up	Timing of MGMT assessment: not explicitly reported but presumably on tissue harvested during biopsy/resection Start time for follow‐up: date of diagnosis; follow‐up: median NR; range 3.2–41.5 months
Notes