Expression of Bmi-1 in Pediatric Brain Tumors as a New Independent Prognostic Marker of Patient Survival

Table 1

Correlation of the Bmi-1 gene expression to clinico-pathologic features of pediatric brain tumors.

	Cases	The Bmi-1 gene expression; (fold change)	𝑃 value
All tumors	56	4.85	0.009
Sex			0.75
Male	30	4.50
Female	26	5.35
Embryonal/gliomas			0.046
Embryonal	16	3.59
Gliomas	40	5.54
Tumor grade			0.03
High grade	26	6.85
Low grade	30	2.75
Tumor type			0.061
Medulloblastoma	11	3.53
Astrocytomas	19	5.11
Ependymomas	16	8.64
Other	10	2.89