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Efficacy and safety of sorafenib in a subset of patients with advanced soft tissue sarcoma from a Phase II randomized discontinuation trial

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Summary

Aim Phase II multi-disease randomized discontinuation trial to assess the safety and efficacy of sorafenib including patients with advanced soft tissue sarcoma (STS). Methods Sorafenib (400 mg twice daily) was initially administered for 12 weeks. Patients with: ≥25% tumour shrinkage continued sorafenib; ≥25% tumour growth discontinued; other patients were randomized and received sorafenib or placebo. Results Twenty-six patients (median age 55 years) were enrolled. Common drug-related adverse events, including fatigue, hand–foot skin reaction, rash or gastrointestinal disturbances, were manageable, reversible and generally low grade. Fatigue, skin toxicity, nausea, diarrhoea and hypertension occurred at grade ≥3 in 19% of patients. After 12 weeks eight (31%) patients had not progressed. Three patients who experienced tumour shrinkage and continued on sorafenib, and five (19%) were randomized either to continue sorafenib or to receive placebo. Of the three patients randomized to sorafenib, one achieved a partial response and two had SD. Overall one patient achieved a partial response and three further patients achieved minor responses. Conclusions There was evidence of disease activity in STS as defined by tumor regressions including one objective partial response. Further investigation in STS is warranted.

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Acknowledgements

Assistance in drafting this manuscript was provided by Chameleon and paid for by Bayer Pharmaceuticals Ltd. Bayer held the database, provided statistical support and provided information on toxicity and response. Bayer was not involved in the decision to publish the data on sarcoma or in the interpretation of the data. Dr A Patnaik assisted with patient recruitment and treatment.

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Correspondence to I. R. Judson.

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Pacey, S., Ratain, M.J., Flaherty, K.T. et al. Efficacy and safety of sorafenib in a subset of patients with advanced soft tissue sarcoma from a Phase II randomized discontinuation trial. Invest New Drugs 29, 481–488 (2011). https://doi.org/10.1007/s10637-009-9367-9

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  • DOI: https://doi.org/10.1007/s10637-009-9367-9

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