Results of the EICESS-92 Study: Two Randomized Trials of Ewing's Sarcoma Treatment—Cyclophosphamide Compared With Ifosfamide in Standard-Risk Patients and Assessment of Benefit of Etoposide Added to Standard Treatment in High-Risk Patients

作者：Michael Paulussen, Alan Craft, Ian Lewis, Allan Hackshaw, Carolyn Douglas, Jürgen Dunst, Andreas Schuck, Winfried Winkelmann, Gabriele Köhler, Christopher Poremba, A. Zoubek, Ruth Ladenstein, Henk van den Berg, Andrea Hunold, A.M. Cassoni, D. Spooner, R. J. Grimer, Jeremy Whelan, Anne McTiernan, H. Jürgens · 发表于：Journal of Clinical Oncology · 年份：2008 · DOI：10.1200/jco.2008.16.5720 · 被引用次数：267 · 研究领域：Sarcoma Diagnosis and Treatment、Lung Cancer Research Studies、Pancreatic and Hepatic Oncology Research

PURPOSE: The European Intergroup Cooperative Ewing's Sarcoma Study investigated whether cyclophosphamide has a similar efficacy as ifosfamide in standard-risk (SR) patients and whether the addition of etoposide improves survival in high-risk (HR) patients. PATIENTS AND METHODS: SR patients (localized tumors, volume <100 mL) were randomly assigned to receive four courses of vincristine, dactinomycin, ifosfamide, and doxorubicin (VAIA) induction therapy followed by 10 courses of either VAIA or vincristine, dactinomycin, cyclophosphamide, and doxorubicin (VACA; cyclophosphamide replacing ifosfamide). HR patients (volume >or=100 mL or metastases) were randomly assigned to receive 14 courses of either VAIA or VAIA plus etoposide (EVAIA). Outcome measures were event-free survival (EFS; defined as the time to first recurrence, progression, second malignancy, or death) and overall survival (OS). RESULTS: A total of 647 patients were randomly assigned: 79 SR patients were assigned to VAIA, 76 SR patients were assigned to VACA, 240 HR were assigned to VAIA, and 252 HR patients were assigned to EVAIA. The median follow-up was 8.5 years. In the SR group, the hazard ratios (VACA v VAIA) for EFS and OS were 0.91 (95% CI, 0.55 to 1.53) and 1.08 (95% CI, 0.58 to 2.03), respectively. There was a higher incidence of hematologic toxicities in the VACA arm. In the HR group, the EFS and OS hazard ratios (EVAIA v VAIA) indicated a 17% reduction in the risk of an event (95% CI, -35% to 5%; P = .12)...