Clinical characteristics of stage IV osteogenic sarcoma patients who did not respond to chemotherapy and were treated with apatinib
| Characteristics | Value |
|---|---|
| Gender | |
| Male | 23/34 (67.6%) |
| Female | 11/34 (32.4%) |
| Age, years | |
| Average | 35.24 |
| Range | 11–73 |
| Distribution | |
| ≤ 42 | 21/34 (61.8%) |
| > 42 | 13/34 (38.2%) |
| ECOG score | |
| 0 | 2/34 (5.9%) |
| 1 | 17/34 (50%) |
| 2 | 14/34 (41.2%) |
| 3 | 1/34 (2.9%) |
| Subtype (%) | |
| Osteosarcoma | 18/34 (52.9%) |
| EWS/PNET | 7/34 (20.6%) |
| Bone UPS | 4/34 (11.8%) |
| Chondrosarcoma | 3/34 (8.8%) |
| Chordoma | 2/34 (5.9%) |
| Metastatic site | |
| Lung | 34/34 (100%) |
| Lung and others | 8/34 (23.5%) |
ECOG, Eastern Cooperative Oncology Group; EWS/PNET, Ewing’s sarcoma/primitive neuroectodermal tumor; UPS, undifferentiated pleomorphic sarcoma.