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Concordance of human epidermal growth factor receptor 2 (HER2) status between biopsy and surgical resection specimens
| HER2 status in surgical resection | Total | |||
|---|---|---|---|---|
| Unamplified | Amplified | |||
| HER2 status in biopsy | Unamplified | 58 | 6 | 64 |
| Amplified | 0 | 6 | 6 | |
| Total | 58 | 12 | 70 | |
