Comparison of Fluorescence In Situ Hybridization and Chromogenic In Situ Hybridization for Low and High Throughput HER2 Genetic Testing

Table 2

Performance of mean CISH and mean FISH HER2 ratio assay.

CISH	FISH
	Amplified (≥2.0)	Nonamplified	Total
Amplified (≥2.0)	18	0	18
Nonamplified	1	76	77
Total	19	76	95

CISH: chromogenic in situ hybridization; FISH: fluorescence in situ hybridization; CI: confidence interval. Concordance, 99,0%; Cohen 𝜅 coefficient, 0,9664 (95% CI, 0,9010–1,0000).