TABLE 1.

Patient and Tumor Characteristics

		n	%
Age	Adult	383	98.2
	Pediatric	7	1.8
	Total	390
Lineage	Astrocytoma	316	81
	Oligodendroglioma	33	8.5
	Glioma NOS	41	10.5
	Total	390
High vs Low grade	High-grade	317	83.6
	Low-grade	62	16.4
	Total	379
WHO Grade	I	6	1.7
	II	52	14.6
	III	62	17.4
	IV	237	66.4
	Total	357
IDH-1 status	Wild-type	266	71.9
	Mutant	104	28.1
	Total	370
IDH-2 status	Wild-type	358	98.6
	Mutant	5	1.4
	Total	363
Tumor location	Frontal	113	35.5
	Temporal	96	30.2
	Parietal	57	17.9
	Occipital	11	3.5
	Posterior fossa	11	3.5
	Other	19	6
	Frontotemporal	2	0.6
	Frontoparietal	3	0.9
	Temporoparietal	3	0.9
	Parieto-occipital	3	0.9
	Total	318

NOS, not otherwise specified.