Table 1.

HIF-1 and tryptase coexpression in correlation with meningioma grade

Meningioma grade	Tryptase expression (−) (%)		Tryptase expression (+) (%)		Tryptase expression (++) (%)		p value
Low grade meningioma (G1) n = 104							p = 0.003
HIF-1 (−)	29	27.1	11	10.7	6	5.8
HIF-1 (+)	32	31.1	14	13.6	10	9.6
HIF-1 (++)	1	1.0	0	0.0	1	1.0
High grade meningioma (G2 or G3) n = 50
HIF-1 (−)	3	6.0	5	10.0	0	0.0
HIF-1 (+)	2	4.0	34	68.0	5	10
HIF-1 (++)	0	0.0	0	0.0	1	2.0