Table 1 Sample characteristics
| Â | Nulliparous | Recent pregnancy | Distant pregnancy |
|---|---|---|---|
Sample size | 19 | 17 | 17 |
Tumor size (cm) (mean ± SD) | 2.7 ± 1.7 | 2.0 ± 1.2 | 4.6 ± 4.5 |
Age at diagnosis (mean ± SD) | 36 ± 5 | 38 ± 3 | 36 ± 7 |
Pregnancies (mean ± SD) | 0 | 2.0 ± 1.0 | 1.9 ± 0.7 |
Tumor grade | Â | Â | Â |
 I | 2 (11 %) | 0 (0 %) | 2 (12 %) |
 II | 12 (63 %) | 2 (12 %) | 4 (24 %) |
 III | 4 (21 %) | 13 (76 %) | 10 (59 %) |
 NA | 1 (5 %) | 2 (12 %) | 1 (6 %) |
ERα+ | 16 (84 %) | 9 (53 %) | 7 (41 %) |
PR+ | 10 (53Â %) | 9 (53Â %) | 6 (35Â %) |
Her2/neu+ | 8 (42Â %) | 6 (35Â %) | 5 (29Â %) |
Triple negative status | Â | Â | Â |
 TNBCs | 1 (5 %) | 7 (41 %) | 7 (41 %) |
 Non-TNBCs | 18 (95 %) | 10 (59 %) | 10 (59 %) |