Table 1.

Characteristics of patients included in the ependymoma TMA. Abbreviations: TMA = tissue microarray; WHO = World Health Organization.

	All patients		Pediatric patients only		Adult patients only
Variable	n	% (total)	n	% (total)	n	% (total)
Patients	379	100.0	193	50.9	186	49.1
Variable	n	% (group)	n	% (group)	n	% (group)
Age (years)
<4	53	14.0	53	27.5	—	—
4–18	140	36.9	140	72.5	—	—
>18	186	49.1	—	—	186	100.0
Gender
Female	167	44.1	71	36.8	96	51.6
Male	212	55.9	122	63.2	90	48.4
Location
Supratentorial	110	29.0	67	34.7	43	23.1
Infratentorial	269	71.0	126	65.3	143	76.9
WHO histologic grade
II	137	36.1	44	22.8	93	50.0
III	242	63.9	149	77.2	93	50.0
Cytogenetic group
1	118	31.1	32	16.6	86	46.2
2	82	21.6	64	33.2	18	9.7
3	40	10.6	26	13.5	14	7.5
n/a	139	36.7	71	36.8	68	36.6
Posterior fossa group
PFA	81	21.4	75	38.9	6	3.2
PFB	134	35.4	24	12.4	110	59.1
n/a	164	43.3	94	48.7	70	37.6
Level of resection
Gross total resection	210	55.4	91	47.2	119	64.0
Subtotal resection	169	44.6	102	52.8	67	36.0
Radiotherapy
Yes	245	64.6	76	39.4	128	68.8
No	134	35.4	117	60.6	58	31.2
Recurrence
Yes	138	36.4	87	45.1	51	27.4
No	241	63.6	106	54.9	135	72.6
Metastasis
Yes	46	12.1	37	19.2	9	4.8
No	333	87.9	156	80.8	177	95.2
Death
Yes	62	16.4	43	22.3	19	10.2
No	317	83.6	150	77.7	167	89.8