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Study Questions First-Line Treatment for Advanced Sarcoma

By R&D Editors | March 25, 2014

(Source: EORTC)A European Organization for Research and Treatment of Cancer (EORTC) study published in The Lancet Oncology does not support administration of intensified doxorubicin and ifosfamide for palliation of advanced soft tissue sarcoma, unless the objective is to shrink the tumor.
 
Dr. Ian Judson of the Royal Marsden Hospital in London and coordinator of this study, said: “Our clinical trial was designed to compare combination treatment with doxorubicin and ifosfamide to treatment with doxorubicin alone, and our results show that the combination chemotherapy did not improve overall survival. So, if the goal of treatment is to control the disease, then administering doxorubicin alone is appropriate. On the other hand, if the goal is to shrink the tumor before another intervention or to relieve symptoms, then combination treatment is justifiable. The observed lack of improvement in overall survival points to the need for better treatments for patients with this disease.”
 
For some thirty years, patients with soft tissue sarcomas have been treated with doxorubicin and ifosfamide, but few studies have directly assessed whether doxorubicin should be administered alone or in combination with ifosfamide. EORTC trial 62012 assessed whether the addition of ifosfamide to doxorubicin improves survival of patients with advanced soft-tissue sarcoma compared with doxorubicin alone.
 
Between April 2003 and May 2010, EORTC trial 62012 randomized 455 patients aged 18 to 60 years with unresectable locally advanced or metastatic high-grade soft-tissue sarcoma to receive either doxorubicin alone (228 patients) or intensified doxorubicin plus ifosfamide (227 patients, combination group) as first-line treatment. At a median follow-up of 56 months in the doxorubicin alone group and 59 months in the combination group, no significant difference was observed in median overall survival in the doxorubicin alone group and 14.3 months in the combination group; hazard ratio. Median progression-free survival was significantly higher in the combination group than for the doxorubicin alone group. More patients in the doxorubicin and ifosfamide group than in the doxorubicin alone group had an overall response.
 
The most common grade 3 and 4 toxic effects were all more common in the combination than in the doxorubicin alone group: leucopenia, neutropenia, febrile neutropenia, anemia and thrombocytopenia.
 
The intergroup Phase 3 randomized, controlled EORTC 62012 was conducted at 38 hospitals in ten countries: Belgium, Canada, Denmark, France, Germany, Slovakia, Spain, Switzerland, The Netherlands and the United Kingdom. EORTC trial 62012 was supported by Cancer Research UK, EORTC Charitable Trust, United Kingdom National Health Service, Canadian Cancer Society Research Institute and an Educational Grant from Amgen.
 
Date: March 25, 2014
Source: European Organization for Research and Treatment of Cancer

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