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Association between PD-1 expression and breast cancer intrinsic subtype
| Intrinsic subtype | PD-1+
|
PD-1−
|
p value | ||
|---|---|---|---|---|---|
| (n) | (%) | (n) | (%) | < 0.0001 | |
| Luminal A (ER+ and/or PR+, HER2−, Ki-67 < 14 %) | 4 | 4.7 | 81 | 95.3 | |
| Luminal B (HER2-negative) ER+ and/or PR+, HER2−, Ki-67 < 14 %) | 38 | 12.1 | 276 | 87.9 | |
| Luminal B (HER2-positive) (ER+ and/or PR+, HER2+) | 14 | 18.7 | 61 | 81.3 | |
| HER2 type (ER−, PR−, HER2+) | 13 | 23.2 | 43 | 76.8 | |
| Basal-like (ER−, PR−, HER2−) | 35 | 27.3 | 93 | 72.7 | |
