Table 1:
Patient Characteristics, HERmark and p95HER2 Testing Results (91 samples).
| Characteristic | Status | No. (%) |
|---|---|---|
| HERmarka | Positive | 66 (73) |
| Equivocal | 9 (10) | |
| Negative | 16 (18) | |
| p95HER2a (3 missing) |
Positive | 43 (51) |
| Negative | 45 (49) | |
| Estrogen receptor | Positive | 49 (54) |
| Negative | 42 (46) | |
| Progesterone receptor | Positive | 29 (32) |
| Negative | 62 (68) | |
| Hormone receptor status | Positive | 54 (59) |
| Negative | 37 (41) | |
| Grade (29 missing) |
3 | 35 (56) |
| 2 | 24 (39) | |
| 1 | 3 (5) | |
| Number of metastases | >3 | 10 (11) |
| 2–3 | 48 (53) | |
| 1 | 33 (36) | |
| Age at diagnosis (years) | Median | 56 |
| Range | 31–86 |
a
Cutoffs of 10.5 and 17.8 were used for HERmark and a cutoff of 2.8 was used for p95HER2. See Materials and Methods.