Table 1 Characteristics of participating breast cancer patients with ER+/HER2− tumors a
Characteristics | Patients, n(%) | Measurement results | Patients, n(%) |
|---|---|---|---|
Age, yr | ER (Allred score b ) | ||
<50 | 250 (45%) | 0 | 53 (9.6%) |
≥50 | 305 (55%) | 3 | 5 (0.9%) |
Menopausal status | 4 | 14 (2.5%) | |
Premenopausal | 300 (54%) | 5 | 28 (5.1%) |
Postmenopausal | 255 (46%) | 6 | 66 (11.9%) |
Nodal status | 7 | 130 (23.4%) | |
N1 | 357 (64%) | 8 | 256 (46.1%) |
N2 | 151 (27%) | Unknown | 3 (0.5%) |
N3 | 47 (9%) | PR (Allred score b ) | |
T stage | 0 | 104 (18.7%) | |
1 | 252 (45%) | 3 | 10 (1.8%) |
2 | 276 (50%) | 4 | 14 (2.5%) |
3 | 27 (5%) | 5 | 42 (7.6%) |
Grade | 6 | 48 (8.7%) | |
1 | 91 (16%) | 7 | 65 (11.7%) |
2 | 260 (47%) | 8 | 268 (48.3%) |
3 | 157 (28%) | Unknown | 4 (0.7%) |
Unknown | 47 (9%) | Ki67 (%) | |
Median (min-max) = 5 (0 to 80) | |||
Treatment arm | Low (<14%) | 400 (72.1%) | |
FEC | 280 (50.5) | High (≥14%) | 134 (24.1%) |
FEC-P | 275 (49.5) | Unknown | 21 (3.8%) |