Low-grade fibromyxoid sarcoma and sclerosing epithelioid fibrosarcoma, outcome of advanced disease: retrospective study from the Ultra-Rare Sarcoma Working Group

Other authors

Institut Català de la Salut

[Giani C] Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy. [Denu RA] Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, USA. [Ljevar S] Department of Clinical Epidemiology and Trial Organisation, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy. [Gronchi A] Department of Sarcoma Surgery, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy. [Napolitano A] Department of Medical Oncology, The Royal Marsden NHS, London, UK. [Rosenbaum E] Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, USA. [Cicala CM] Servei d’Oncologia Mèdica, Vall d’Hebron Hospital Universitari, Barcelona, Spain. Vall d’Hebron Institute of Oncology (VHIO), Barcelona, Spain

Vall d'Hebron Barcelona Hospital Campus

Publication date

2024-10-30T07:16:04Z

2024-10-30T07:16:04Z

2024-09

Abstract

Low-grade fibromyxoid sarcoma; Sclerosing epithelioid fibrosarcoma; Systemic therapies


Sarcoma fibromixoide de bajo grado; Fibrosarcoma epitelioide esclerosante; Terapias sistémicas


Sarcoma fibromixoide de baix grau; Fibrosarcoma epitelioide esclerosant; Teràpies sistèmiques


Background To present findings from a retrospective study conducted by the Ultra-Rare Sarcoma Working Group on metastatic low-grade fibromyxoid sarcoma (LGFMS), sclerosing epithelioid fibrosarcoma (SEF), and hybrid (H)-LGFMS/SEF across 28 global centres. Methods Patients treated at participating institutions from January 2000 to September 2022 were retrospectively selected. Diagnosis was confirmed by expert pathologists. Primary endpoint was progression-free survival (PFS-1) from metastasis detection to first progression or death. PFS-2 was calculated from therapy initiation. Results A total of 101 patients were identified (32 LGFMS, 50 SEF, 19 H-LGFMS/SEF). Median (m) follow-up was 62.1 months. mPFS-1 was 28.7, 11.8, and 20.3 months for LGFMS, SEF, and H-LGFMS/SEF, respectively. mOS was 145.8, 41.9, and 113.5 months, respectively. Treatments included anthracycline-based chemotherapy, gemcitabine-based chemotherapy (G), pazopanib, trabectedin, others. mPFS-2 was: 20.1, 5.5, and 3.5 months in H-LGFMS/SEF, SEF, and LGFMS, respectively, with anthracyclines; 19.5, 7.7, and 6.9 months in LGFMS, SEF, and H-LGFMS/SEF, respectively, with pazopanib; 12.0, 9.7, and 3.1 months in H-LGFMS/SEF, LGFMS, and SEF, respectively. Occasional responses occurred with ifosfamide/oral cyclophosphamide, and prolonged stable disease with immune checkpoint inhibitors. Conclusions In this series, the largest available, metastatic LGFMS, SEF, and H-LGFMS/SEF showed different courses. Systemic agents have modest efficacy, informing future trials of novel agents for these tumours.


This work was supported by the Italian Ministry of Health, Ricerca Corrente (no grant number).

Document Type

Article


Published version

Language

English

Subjects and keywords

Quimioteràpia combinada; Tumors de parts toves - Tractament; Avaluació de resultats (Assistència sanitària); DISEASES::Neoplasms::Neoplasms by Histologic Type::Neoplasms, Connective and Soft Tissue::Neoplasms, Connective Tissue::Neoplasms, Fibrous Tissue::Fibrosarcoma; Other subheadings::Other subheadings::Other subheadings::/drug therapy; ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT::Therapeutics::Therapeutics::Drug Therapy::Antineoplastic Protocols::Therapeutics::Drug Therapy::Antineoplastic Combined Chemotherapy Protocols; DISEASES::Neoplasms::Neoplasms by Site::Soft Tissue Neoplasms; ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT::Diagnosis::Prognosis::Treatment Outcome::Progression-Free Survival; ENFERMEDADES::neoplasias::neoplasias por tipo histológico::neoplasias de tejido conjuntivo y de tejidos blandos::neoplasias de tejido conjuntivo::neoplasias de tejido fibroso::fibrosarcoma; Otros calificadores::Otros calificadores::Otros calificadores::/farmacoterapia; TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS::terapéutica::terapéutica::farmacoterapia::protocolos antineoplásicos::terapéutica::farmacoterapia::protocolos de quimioterapia antineoplásica combinada; ENFERMEDADES::neoplasias::neoplasias por localización::neoplasias de los tejidos blandos; TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS::diagnóstico::pronóstico::resultado del tratamiento::supervivencia libre de progresión

Publisher

Elsevier

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Attribution-NonCommercial-NoDerivatives 4.0 International

http://creativecommons.org/licenses/by-nc-nd/4.0/

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