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Table 2 Summary of HER2 manual grading and FISH scores

From: Computer-assisted assessment of the Human Epidermal Growth Factor Receptor 2 immunohistochemical assay in imaged histologic sections using a membrane isolation algorithm and quantitative analysis of positive controls

FISH Score IHC = 0 IHC = 1 IHC = 2 IHC = 3 Total
≤ 1.7 25 22 15 6 68
1.8 – 2.2 1 1 2 0 4
≥ 2.3 2 3 5 17 27
Total 28 26 22 23 99