Table 1.
Clinical characteristics of the study population.
| TNBC | ER+HER2− | ER-HER2+ | ER+HER2+ | Healthy volunteers | |
|---|---|---|---|---|---|
| Numbers | 18 | 15 | 15 | 15 | 15 |
| Age at diagnosis (median, range) | 51 (32–68) | 50 (33–75) | 53 (38–81) | 44 (23–64) | 38 (20–58) |
| Sex | |||||
| Female | 100% (18) | 100% (15) | 100% (15) | 100% (15) | 100% (15) |
| Ethnicity | |||||
| Caucasian | 50% (9) | 67% (10) | 60% (9) | 73% (11) | 60% (9) |
| BAME | 27% (5) | 20% (3) | 33% (5) | 27% (4) | 40% (6) |
| Unknown | 22 (4) | 13% (2) | 7% (1) | – | – |
| Histological type | |||||
| Ductal | 94% (17) | 80% (12) | 73% (11) | 87% (13) | NA |
| Lobular | 6% (1) | 20% (3) | 4% (4) | 13% (2) | NA |
| Grade (% n) | |||||
| 1 | 6% (1) | 7% (1) | – | – | NA |
| 2 | 17% (3) | 47% (7) | 27% (4) | 53% (8) | NA |
| 3 | 78% (14) | 47% (7) | 73% (11) | 47% (7) | NA |
| Stage at the time of bleed point (% n) | |||||
| 1 | 22% (4) | 20% (3) | 0% (0) | 27% (4) | NA |
| 2 | 33% (6) | 40% (6) | 40% (6) | 40% (6) | NA |
| 3 | 22% (4) | 20% (3) | 27% (4) | 7% (1) | NA |
| 4 | 22% (4) | 20% (3) | 33% (5) | 27% (4) | NA |
NA, not applicable.