Table 1 Demographics of serum samples of breast cancer patients
| Â | ER+ | HER2+ | TNBC | Total |
|---|---|---|---|---|
Case (%) | 50 (29.94) | 59 (35.33) | 58 (34.73) | 167 (100) |
Race (n = 160) | ||||
 CA | 25 (15.63) | 38 (23.75) | 27 (16.87) | 91 (56.25) |
 AA | 25 (15.63) | 16 (10) | 29 (18.12) | 70 (43.75) |
Tumor grade (n = 159) | ||||
 I | 12 (7.55) | 4 (2.51) | – | 16 (10.06) |
 II | 25 (15.72) | 15 (9.44) | 9 (5.66) | 49 (30.82) |
 III | 12 (7.55) | 36 (22.64) | 46 (28.93) | 94 (59.12) |