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Multimodal treatment including standard chemotherapy with vincristine, doxorubicin, cyclophosphamide, ifosfamide, and etoposide for the Ewing sarcoma family of tumors in Japan: Results of the Japan Ewing Sarcoma Study 04

The survival rate in patients with Ewing sarcoma family of tumors (ESFT) in Japan was reported to be < 50% in the 1990s. The Japan Ewing Sarcoma Study Group was established to improve the prognosis of ESFT in Japan. The aim of this phase II trial was to determine the efficacy and safety of multimodal treatment for nonmetastatic ESFT.