Table 2.

Correlation between immunohistochemical results regarding c-erbB-2 oncoprotein (HER2) expression, using two commercial antibodies and gene status.

Immunostains		Total cases (number/%)	FISH assessment-HER2 gene status (number/%)
			Amplified cases	Nonamplified cases
HER2 3+	Dako polyclonal	7/33.33	7/100%	0
	Leica CB11 clone	6/28.57	6/100	0
HER2 2+	Dako polyclonal	7/33.33	4/57.14	3/42.86
	Leica CB11 clone	7/33.33	5/71.42	2/28.58
HER2 1+	Dako polyclonal	7/33.33	0	7/100
	Leica CB11 clone	8/38.09	0	8/100