Table 2.

Clinical parameters of HGG patients in TCGA (n=523)

Variable		Number of patients	Percentage of patients
Gender	Male	318	60.8%
	Female	205	39.2%
Age (years)	<59	255	48.8%
	≥59	268	51.2%
Chemotherapy	Yes	516	98.7%
	No	7	1.3%
Radiotherapy	Yes	511	97.7%
	No	12	2.3%
IDH1 mutation	Yes	32	6.1%
	No	491	93.2%

Abbreviations: IDH1, isocitrate dehydrogenase 1; HGG, high-grade glioma; TCGA, the Cancer Genome Atlas.