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HER2 status and median overall survival
| Method for ascertaining HER2 | HER2 positive | HER2 negative | Log-rank P value |
| CB11 | 11.3 months | 13.1 months | 0.14 |
| FISH | 10.9 months | 13.1 months | 0.26 |
| HercepTest: 2–3 versus 0–1 | 11.5 months | 13.2 months | 0.84 |
FISH, fluorescence in situ hybridization.
