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Adult Soft Tissue Sarcoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Treatment Option Overview


An additional multicenter randomized trial (EORTC-62931 [NCT00002641]), the largest trial reported to date using adjuvant doxorubicin (75 mg/m2) plus ifosfamide (5000 mg/m2), was subsequently published in abstract form and was not included in the above meta-analysis.[33] The results differed from those reported in the meta-analysis.[32] After local therapy, 351 patients were randomly assigned to five 21-day cycles of adjuvant therapy versus observation. The trial was stopped for futility because the 5-year RFS was 52% in both arms. OS was 64% in the chemotherapy arm versus 69% in the observation arm. In a subsequent abstract, the EORTC investigators reported a combined analysis of this trial and their previous trial (EORTC-62771) [34] of adjuvant cyclophosphamide plus doxorubicin plus DTIC (CYVADIC), representing the two largest trials of adjuvant therapy for adult soft tissue sarcoma in the literature.[35] The combined analysis showed no improvement in either RFS or OS associated with adjuvant chemotherapy.[35][Level of evidence: 1iiA]

In summary, the impact of adjuvant chemotherapy on survival is not clear but is likely to be small in absolute magnitude. Therefore, in discussions with a patient, any potential benefits should be considered in the context of the short- and long-term toxicities of the chemotherapy.

Role of regional hyperthermia

The use of regional hyperthermia to enhance the local effects of systemic chemotherapy in the neoadjuvant and adjuvant setting is under investigation. In a multicenter phase III trial, 341 patients with high-risk (tumor ≥5 cm, grade 2-3, and deep to fascia) soft tissue sarcomas (149 extremity tumors and 192 nonextremity tumors) were randomly allocated to receive four 21-day cycles of chemotherapy (etoposide 125 mg/m2 on days 1 and 4; ifosfamide 1500 mg/m2 on days 1-4; doxorubicin 50 mg/m2 on day 1) with or without regional hyperthermia both before and after local therapy.[36] Approximately 11% of the patients were being treated for recurrent tumors. The regional hyperthermia was designed to produce tumor temperatures of 42°C for 60 minutes and was given on days 1 and 4 of each chemotherapy cycle. After the first four cycles of chemotherapy, definitive surgical excision of the tumor was performed, if possible, followed by radiation therapy, if indicated (i.e., a 52.7 Gy median dose delivered), and then the last four cycles of chemotherapy plus or minus hyperthermia. Three of the nine treatment centers with particular expertise in hyperthermia treated 91% of the patients in the trial.

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