Table 1. Favorable prognostic factors in locoregional radiation therapy for patients with de novo stage IV breast cancer.
| Author/year | Favorable prognostic factors | References |
|---|---|---|
| Le Scodan, 2009 | Visceral metastasis | (2) |
| Nguyen, 2012 | ECOG PS 0–1 | (15) |
| ER (+) | ||
| Clear surgical margin | ||
| Single subsite | ||
| Bone-only metastasis | ||
| 1–4 metastatic lesions | ||
| Pons-Tostivint, 2019 | HR(+)/HER2(−) | (17) |
| HER2 (+) | ||
| Bone-only metastasis | ||
| Visceral metastasis without CNS involvement | ||
| Mauro, 2016 | KPS ≥60 | (21) |
| 1–3 metastatic lesions | ||
| The use of hormone therapy | ||
| Radiation dose >30 Gy |
+, positive; −, negative. ECOG PS, Eastern Cooperative Oncology Group Performance Status; ER, estrogen receptor; HR, hormone receptor; HER2, human epidermal growth factor receptor 2.