Table 1.

Patient demographic and tumor characteristics^*

Characteristic	Nontumor brain tissue (n = 7)	Tumor histology and grade of glioma tissues (n = 131)
		Primary glioblastoma (n = 20)	Secondary glioblastoma (n = 12)	Grade 3 astrocytoma (n = 9)	Grade 2 astrocytoma (n = 20)	Grade 3 oligoastrocytoma (n = 9)	Grade 2 oligoastrocytoma (n = 22)	Grade 2 oligodendroglioma (n = 20)	Ependymoma (n = 15)	Pilocytic astrocytoma (n = 4)
Age at diagnosis, y
Median	33	55	34.5	40	40	40	33	35.5	41	28.5
Range	23–42	21–78	18–49	23–57	21–64	26–52	19–48	20–59	19–70	22–39
Sex, No. (%)
Female	3 (43)	7 (35)	4 (33)	6 (67)	10 (50)	4 (44)	9 (41)	10 (50)	4 (27)	2 (50)
Male	4 (57)	13 (65)	8 (67)	3 (33)	10 (50)	5 (56)	13 (59)	10 (50)	11 (73)	2 (50)
Race, No. (%)
White	—	18 (90)	11 (92)	5 (56)	17 (85)	7 (78)	16 (73)	18 (90)	12 (80)	4 (100)
Hispanic	—	1 (5)	1 (8)	2 (22)	1 (5)	0	1 (4)	1 (5)	2 (13)	0
American Indian	—	0	0	0	1 (5)	0	0	0	0	0
Asian	—	0	0	1 (11)	1 (5)	0	2 (9)	1 (5)	0	0
Unknown	7 (100)	1 (5)	0	1 (11)	0	2 (22)	3 (14)	0	1 (7)	0
Survival, d
Median	NA	759	1244	1933	1584	3007	2937	2532	2498	2789
Range	NA	108–2477	466–4973	516–4494	305–4043	603–6459	612–5843	4–5988	478–5983	948–3279

^*Nontumor brain tissues (n = 7) were obtained from cancer-free patients who underwent temporal lobe resection for treatment of epilepsy at the University of California San Francisco Medical Center. Glioma tissues (n = 131) were obtained between 1990 and 2003 from the University of California San Francisco Brain Tumor Research Center Tissue Bank.