Table 2.

Comparison of three different HER2 immunohistochemistry scoring systems with ERBB2 gene amplification status by FISH

	ERBB2 amplification			Spearman's rho	p-value
	Present (N = 19)	Absent (N = 13)
HER2 breast			0.934		< 0.01
0	0	7
1	0	3
2	1	3
3	18	0
HER2 GI			0.803		< 0.01
0	0	7
1	0	0
2	0	3
3	19	3
HER2 Salivary gland			0.964		< 0.01
0	0	7
1	0	4
2	0	2
3	19	0