Prognostic relevance of disseminated tumor cells in the bone marrow and biological factors of 265 primary breast carcinomas

Table 3 Distribution of HER2 immunohistochemistry and fluorescence in situ hybridization

HER2 IHC	HER2 amplification	No. of cases	% FISH positive
0	Negative	62
	Positive	10	13.9
1+	Negative	37
	Positive	9	19.5
2+	Negative	9
	Positive	7	43.7
3+	Negative	5
	Positive	10	66.7

Correlation p < 0.001. FISH = fluorescence in situ hybridization; HER2 = human epithelial growth factor receptor 2; IHC = immunohistochemistry.

ISSN: 1465-542X