Table 6.
Concordance between CNB and surgical specimens for molecular subtypes including the subdivision of luminal B
| Surgical specimen | CNB Luminal A | Luminal B (HER2-) | Luminal B (HER2+) | Triple negative | HER2+ | Total | Concordance rate (%) | Kappa |
|---|---|---|---|---|---|---|---|---|
| Luminal A | 218 | 26 | 0 | 1 | 0 | 245 | 89.0 | 0.696 |
| Luminal B (HER2-) | 75 | 129 | 1 | 4 | 0 | 209 | 61.7 | |
| Luminal B (HER2+) | 0 | 1 | 58 | 0 | 2 | 61 | 95.1 | |
| HER2+ | 0 | 0 | 6 | 0 | 29 | 35 | 82.9 | |
| Triple negative | 2 | 16 | 0 | 61 | 0 | 79 | 77.2 | |
| Total | 295 | 172 | 65 | 66 | 31 | 629 | 78.7 |
CNB, core needle biopsy; HER2, human epidermal growth factor receptor 2.