biostudies-literatureXie LNatural Science Foundation of Beijing Municipality (Beijing Natural Science Foundation)10473https://www.ebi.ac.uk/biostudies/studies/S-EPMC12647724biostudies-literatureUnknown16(1)Relapsed or refractory osteosarcoma carries a poor prognosis after standard chemotherapy. We conducted a multicenter, randomized, phase II trial (NCT05277480) to compare apatinib plus ifosfamide/etoposide (IE) with IE alone in patients who had progressed following at least one prior line of chemotherapy. Patients were randomized 2:1 to receive apatinib (500 mg orally once daily) plus IE (ifosfamide 1.8 g/m²/day and etoposide 100 mg/m²/day, days 1-3 every 3 weeks) or IE alone (same doses, days 1-5 every 3 weeks). The primary endpoint was progression-free survival (PFS). Between April 14, 2022, and August 22, 2023, 81 patients were enrolled (53 in apatinib plus IE group and 28 in IE group). After a median follow-up of 19.9 months, the median PFS was 5.5 months (95% confidence interval [CI]: 3.9, 6.4) with apatinib plus IE compared with 3.4 months (95% CI: 1.4, 4.6) with IE (hazard ratio, 0.60; 95% CI: 0.37, 0.98; P = 0.0402). The trial met its pre-specified primary endpoint. These results suggest that apatinib plus IE may improve PFS in relapsed or refractory osteosarcoma, but as a randomized phase II study, the findings are exploratory and require confirmation in phase III trials.Nature communicationsApatinib plus ifosfamide and etoposide versus ifosfamide and etoposide in patients with advanced osteosarcomas (OAIE/PKUPH-sarcoma 11): a randomized phase II study.PMC12647724L234041Hua YLiu KWang DGuo WXie LLiu RPang ZSun XXu JJi TLi YYang YWei RChen ZHu HWu SZhou GSun KShao STang XfalseApatinib plus ifosfamide and etoposide versus ifosfamide and etoposide in patients with advanced osteosarcomas (OAIE/PKUPH-sarcoma 11): a randomized phase II study.Relapsed or refractory osteosarcoma carries a poor prognosis after standard chemotherapy. We conducted a multicenter, randomized, phase II trial (NCT05277480) to compare apatinib plus ifosfamide/etoposide (IE) with IE alone in patients who had progressed following at least one prior line of chemotherapy. Patients were randomized 2:1 to receive apatinib (500 mg orally once daily) plus IE (ifosfamide 1.8 g/m²/day and etoposide 100 mg/m²/day, days 1-3 every 3 weeks) or IE alone (same doses, days 1-5 every 3 weeks). The primary endpoint was progression-free survival (PFS). Between April 14, 2022, and August 22, 2023, 81 patients were enrolled (53 in apatinib plus IE group and 28 in IE group). After a median follow-up of 19.9 months, the median PFS was 5.5 months (95% confidence interval [CI]: 3.9, 6.4) with apatinib plus IE compared with 3.4 months (95% CI: 1.4, 4.6) with IE (hazard ratio, 0.60; 95% CI: 0.37, 0.98; P = 0.0402). The trial met its pre-specified primary endpoint. These results suggest that apatinib plus IE may improve PFS in relapsed or refractory osteosarcoma, but as a randomized phase II study, the findings are exploratory and require confirmation in phase III trials.2025-01-01T00:00:00Z2025 Nov2026-06-05T16:48:56.841Z2026-05-18T03:13:33.353ZS-EPMC126477244129060910.1038/s41467-025-65467-8