Table 1.

Brain tumor gene expression.

	Expression levels relative to normal brain (n = 23; data from Sun et al., 2006)
	AC	ODG	GBM
n	26	50	77
PTN	0.0004	<0.0001	<0.0001
MK	<0.0001	0.0001	<0.0001
ALK	NS	NS	0.013
PTPRz	<0.0001	<0.0001	<0.0001

mRNA expression of PTN, MK, ALK, PTPRz in normal brain versus brain tumors from the Oncomine data base were used for the analysis. The number of patients in each group and the p-value for the comparisons of expression levels of the respective gene are indicated. NS, not significant, p > 0.05. AC, astrocytoma; ODG, oligodendroglioma; GBM, glioblastoma multiforme. Modified from Stylianou et al. (2009).