Table 3.
Concordance rates of molecular subtypesa.
| Main focus | Minor focus | Concordance rate (%) | Kappa | p-value | ||||
|---|---|---|---|---|---|---|---|---|
| LA | LB (HER2−) | LB (HER2+) | HER2+ | TNBC | 80.1 | 0.830 | <0.001 | |
| LA | 104 | 6 | 1 | 3 | 3 | |||
| LB (HER2−) | 32 | 93 | 4 | 1 | 5 | |||
| LB (HER2+) | 4 | 4 | 42 | 0 | 0 | |||
| HER2+ | 0 | 0 | 2 | 39 | 6 | |||
| TNBC | 3 | 1 | 1 | 1 | 32 | |||
a
The cutoff value of Ki67 was 20% for differentiating luminal A-like and luminal B-like (HER2−).
HER2, human epidermal growth factor receptor 2; HR, hormone receptor; LA, luminal A-like; LB, luminal B-like; TNBC, triple negative breast cancer.