Table 2. Comparison between Her2 immunohistochemistry and FISH (p<0.001).

		Her2IHC				Total
		0	1+	2+	3+
Her2FISH	Negative (n=260)	131	72	31	17	251
	Polysomy (n=66)	31	17	11	5	64
	Amplification (n=21)	0	7	1	13	21
Total		162	96	43	35	336