Table 1.

Overview of TCGA, French GWAS and French seq series and mutation status of tumours

Dataset	Controls	Cases (GBM/non-GBM)	Case groupings
			IDH status		EGFR		CDKN2A		Molecular subgroup						WHO 2016 classification
			mut	wt	amp	wt	del	wt	IDH-only	TERT-IDH	TERT-only	Triple −ve	Triple +ve	Total	AstroIDH-mut	Astro IDH-wt	Oligo 1p19q	GBM IDH-mut	GBM IDH-wt	Total
TCGA	2648	521 (183/338)	293	228	246	270	254	262	100	4	45	10	65	224	166	51	116	10	171	514
French GWAS	1190	1423 (430/993)	366	498	118	628	173	573	169	46	309	141	85	750	188	214	95	27	233	757
French seq	5527	704 (181/523)	427	277	101	592	144	549	181	28	185	92	199	685	178	114	218	31	148	689
Total	9365	2648 (795/1854)	1086	1003	465	1490	571	1384	450	78	539	243	349	1659	532	379	429	68	552	1960

Amp amplified, astro astrocytoma, del deleted, mut mutated, oligo oligodendroglioma, wt wildtype