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Comparison of the results of IHC and FISH
| IHC scoring | Her-2 FISH amplified | Her-2 FISH non-amplified | Concordance by IHC | Discordance by IHC |
| 0 and 1+ (n = 26) | 5 | 21 | (21/26)80.8% | (5/26)19.2% |
| 2+ (n = 10) | 7 | 3 | (7/10)70.0% | (3/10)30.0% |
| 3+ (n = 14) | 13 | 1 | (13/14)92.9% | (1/14)7.1% |
IHC = immunohistochemistry; FISH = fluorescence in situ hybridization
