Figure 4From: Assessment of HER2 status in breast cancer: overall positivity rate and accuracy by fluorescence in situ hybridization and immunohistochemistry in a single institution over 12 years: a quality control study Results HER2 amplification rate using FISH methodology as primary testing between 2005 and 2010. Slight drop of FISH positive cases were observed after applying modified ASCO scoring criteria from 2008.Back to article page