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Updated: Feb 25, 2026

Tumorsphere Derivation and Treatment from Primary Tumor Cells Isolated from Mouse Rhabdomyosarcomas
Published on: September 13, 2019
Olaratumab for the treatment of soft-tissue sarcoma
Alexandra Pender1, Robin L Jones1,2
1Sarcoma Unit, Department of Medicine, The Royal Marsden NHS Foundation Trust, London, UK.
Abstract:
The outcome for patients with unresectable/metastatic soft tissue sarcoma remains poor with few treatment options. In the first line setting, a number of randomized trials have shown no difference in overall survival between combination anthracycline schedules and single agent doxorubicin. A Phase Ib/randomized Phase II trial of doxorubicin with or without the monoclonal antibody to PDGFR-α, olaratumab, demonstrated a significant difference in median overall survival in favor of the olaratumab arm. The results of this trial led to approval of olaratumab in combination with doxorubicin in adult anthracycline-naive unresectable soft tissue sarcoma. In this review, we describe some of the preclinical and early clinical data of olaratumab in sarcomas, the Phase Ib/II trial and ongoing trials with olaratumab in sarcomas.
Insights
Olaratumab, combined with doxorubicin, offers a new treatment option for unresectable soft tissue sarcoma, improving overall survival in patients previously untreated with anthracyclines.
Area of Science:
- Oncology
- Medical Oncology
- Sarcoma Research
Background:
- Soft tissue sarcoma (STS) has a poor prognosis in advanced stages.
- Current first-line treatments lack significant survival benefits.
Purpose of the Study:
- To review preclinical and clinical data for olaratumab in sarcoma.
- To discuss the Phase Ib/II trial results and ongoing studies of olaratumab.
Main Methods:
- Review of preclinical studies and early clinical data.
- Analysis of a Phase Ib/randomized Phase II trial comparing doxorubicin with or without olaratumab.
- Discussion of ongoing clinical trials.
Main Results:
- A Phase Ib/II trial showed improved median overall survival with olaratumab plus doxorubicin.
- This combination led to regulatory approval for specific STS patient populations.
Conclusions:
- Olaratumab represents a significant advancement in first-line treatment for unresectable STS.
- Further trials are evaluating olaratumab's role in various sarcoma settings.
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