Table 2. Immunohistochemical profiles of the considered series.
| Protein | Total (n = 678) | TNBC (n = 396) | Core Basal (n = 236) | 5NP (n = 143) | p-value (Core Basal vs 5NP) | Non-TNBC (n = 276) | p-value (TNBC vs non-TNBC) |
| AR | 305/632 (48.3%) | 92/371 (24.8%) | 50/229 (21.8%) | 38/136 (27.9%) | n.s. | 209/256 (81.6%) | <0.001 |
| p53 | 268/639 (41.9%) | 202/377 (53.6%) | 129/232 (55.6%) | 70/138 (50.7%) | n.s. | 66/256 (25.7%) | <0.001 |
| EGFR | 249/648 (38.4%) | 210/381 (55.1%) | 207/235 (88.1%) | 0/143 (0.0%) | <0.001 | 37/262 (14.1%) | <0.001 |
| CK5/6 | 98/646 (15.2%) | 89/385 (23.1%) | 88/236 (37.3%) | 0/143 (0.0%) | <0.001 | 9/256 (3.5%) | <0.001 |