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TableĀ 1 Concordance between IHC versus FISH

From: Her2 assessment using quantitative reverse transcriptase polymerase chain reaction reliably identifies Her2 overexpression without amplification in breast cancer cases

IHC testing FISH testing, N (%)
FISH positive FISH negative
0 0 (0) 44 (100)
1+ 0 (0) 13 (100)
2+ 6 (12.2) 43 (87.8)
3+ 45 (95.7) 2 (4.3)
  1. IHC immunohistochemistry, FISH fluorescence in situ hybridization