Metastatic extraskeletal Ewing's sarcoma treated with trabectedin: A case report
Jorge Hernando-CuberoPilar M. Sanz-MoncasiAlba Hernández-GarcíaIsabel Pajares-BernardJavier Martínez‐Trufero
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Abstract:
The Ewing's sarcoma family of tumors (ESFT) comprises a number of rare malignant tumors. Standard first-line treatment for patients with these tumors includes chemotherapy with a five-drug regimen of vincristine, doxorubicin (Adriamycin®) and cyclophosphamide, alternating with ifosfamide and etoposide (VAC/IE). In cases of inadequate response, there are a number of second-line regimens available. However, further treatment options are required for those patients with disease unresponsive to standard treatment. Trabectedin is a novel treatment option for patients with ESFT. The present study reports the case of a Caucasian 69-year-old female patient who presented with a soft tissue mass on the chest wall that had developed 7 months earlier. A computed tomography scan revealed a 9×8×7-cm mass on the anterior chest wall above the pectoral muscle. Histopathological evaluations and molecular analysis indicated that it was consistent with a metastatic extraskeletal Ewing's sarcoma. The patient was treated with an alternating VAC/IE regimen; however, an inadequate response was observed. The patient received second-line treatment with a gemcitabine and dacarbazine combination regimen, but the disease progressed. Subsequently, treatment with trabectedin (1.5 mg/m2 as a 24-h continuous infusion every 3 weeks) was initiated. Trabectedin treatment resulted in long-lasting (18 months) progression-free survival. It is vital that novel drugs continue to being developed for patients with ESFT following progression subsequent to standard chemotherapy. The current report presents a case of a patient with metastatic, pre-treated Ewing's sarcoma achieving disease stabilization with trabectedin. Based on these results and the observed tolerability profile, trabectedin represents an alternative treatment for patients with ESFT. Further studies are required in order to determine the efficacy of trabectedin as monotherapy or in combination with other drugs. It is also important to identify which tumor subtypes, specific translocations and patient profiles will benefit the most from treatment with trabectedin.Keywords:
Trabectedin
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Epirubicin
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Soft tissue sarcomas are rare disease and the development of efficacious drug is urgently needed. The challenge is continuing, and recently 2 drugs, trabectedin and eribulin, were approved in Japan. Both drugs were investigated in patients with liposarcoma or leiomyosarcoma in randomized phase III trials as compared to dacarbazine. Eribulin was superior in terms of overall survival and trabectedin was superior in terms of progression-free survival compared to dacarbazine. This article reviews the efficacy and safety of both drugs.
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Background We performed a randomized phase 3 study of trabectedin versus dacarbazine in previously‐treated patients with liposarcoma/leiomyosarcoma (LPS/LMS). Methods Patients were randomized 2:1 to trabectedin (n = 384) or dacarbazine (n = 193) administered intravenously every 3 weeks. The primary objective was overall survival (OS). Secondary objectives were progression‐free survival, objective response rate, safety, and patient‐reported outcomes, all previously reported and demonstrating superior disease control with trabectedin. Results of the final OS analysis in preplanned subgroups of patients with LPS/LMS are presented. Results At the time of the final OS analysis, 577 patients had been assigned randomly, including 423 (73%) with LMS and 154 (27%) with LPS. The median duration of treatment exposure was higher in the trabectedin arm compared with the dacarbazine arm (4 vs 2 cycles), as was the proportion of patients receiving an extended number of therapy courses (≥6 cycles: 42% vs 22%). This pattern was consistent across histological subgroups: the median number of treatment cycles (4 vs 2 for both subgroups) and proportion of patients with ≥6 treatment cycles (LMS, 43% vs 24%; LPS, 40% vs 16%). Despite improved disease control by trabectedin, no improvement in OS was observed; the final median OS for trabectedin versus dacarbazine was 13.7 versus 13.1 months ( P = .49). Sensitivity analyses of OS suggest confounding by post‐study anticancer therapies, which were utilized in most patients in both treatment arms (71% vs 69%, respectively). Conclusion The final OS results demonstrated comparable survival between LPS/LMS patients receiving trabectedin or dacarbazine, which is consistent with the interim analysis results. Both LPS and LMS demonstrated improved disease control with trabectedin.
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A study of combination chemotherapy with nitrosomethylurea, vincristine and peplomycin or bleomycetin given an 5-6-day cycles showed the cytotoxic regimens to be more effective than single-agent treatment with dacarbazine for disseminated melanoma of the skin with metastases to the subcutaneous fat, lymph nodes, lungs and other viscera. In a group of 129 such patients, complete (12%) and partial remission (38%) was observed with the former combination whereas with nitrosomethylurea, vincristine and bleomycetin, complete and partial response rates were 7.6 and 26.9%, respectively.
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Abstract The prognosis of uterine leiomyosarcoma (LMS) is notoriously poor and a standard chemotherapy for patients with uterine LMS has not yet been established. Here, we describe two patients with recurrent LMS of the uterus who were treated with mesna, doxorubicin, ifosfamide and dacarbazine chemotherapy; one achieved complete and the other partial remission.
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Background . Doxorubicin/ifosfamide is a first-line systemic chemotherapy for the majority of advanced soft tissue sarcoma (ASTS) subtypes. Trabectedin is indicated for the treatment of ASTS after failure of anthracyclines and/or ifosfamide; however it is being increasingly used off-label as a first-line treatment. This study estimated the cost effectiveness of these two treatments in the first-line management of ASTS in Italy, Spain, and Sweden. Methods . A Markov model was constructed to estimate the cost effectiveness of doxorubicin/ifosfamide compared to trabectedin monotherapy, defined as the cost per QALY gained, in each country. Results . First-line treatment with doxorubicin/ifosfamide resulted in lower two-year healthcare costs and more QALYs than first-line treatment with trabectedin monotherapy in all three countries. Probabilistic sensitivity analysis showed that at a cost per QALY threshold of €35,000, >90% of a cohort would be cost effectively treated with doxorubicin/ifosfamide compared to trabectedin monotherapy in all three countries. Conclusion . Within the model’s limitations, first-line treatment of patients with ASTS with doxorubicin/ifosfamide instead of trabectedin monotherapy affords a cost-effective use of publicly funded healthcare resources in Italy, Spain, and Sweden and is therefore the preferred treatment in all three countries. These findings support the recommendation that trabectedin should remain a second-line treatment.
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