Table 1.

Strong Correlation between EGFR Gene Amplification Status and EGFR Protein Expression at the Cell Membrane in Human GBMs (n = 64).

EGFR Amplification	EGFR Protein Expression (IHC Score)
	0	1+	2+	3+	Total
No	14	15	10	2	41
Yes, focal	1	1	1	3	6
Yes, diffuse	0	1	2	14	17
Total	15	17	13	19	64