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Characteristics of HER2+ tumors recurring on or after trastuzumab therapy
| n = 63 | |
|---|---|
| Therapeutic regimen | |
| Only adjuvant trastuzumab | 21 |
| Several lines of chemotherapy | 42 |
| Metastatic tissue site | |
| Ipsilateral breast/axilla/chest wall | 39 (62%) |
| Bone | 1 (2%) |
| Liver | 13 (21%) |
| Lung | 4 (6%) |
| Brain | 6 (9%) |
