Dose Reduction of Preoperative Radiotherapy in Myxoid Liposarcoma A Nonrandomized Controlled Trial
| Autor: | A.N. Scholten, Augustinus D.G. Krol, Aisha Miah, Nina L. Jebsen, Elizabeth H. Baldini, Uta Flucke, Khin Thway, Houke M. Klomp, Piet van den Ende, Winan J. van Houdt, Hester van Boven, Erik van Werkhoven, Yvonne Schrage, Judith V.M.G. Bovée, Jos A. van der Hage, Jan F. Ubbels, Rick L. Haas, Pètra M. Braam, Johannes J. Bonenkamp, Shane Zaidi, Øyvind S. Bruland, Jules Lansu, Winette T. A. van der Graaf, Frits van Coevorden |
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| Přispěvatelé: | RS: GROW - R3 - Innovative Cancer Diagnostics & Therapy |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Cancer Research medicine.medical_specialty medicine.medical_treatment EUROPEAN-ORGANIZATION Rare cancers Radboud Institute for Molecular Life Sciences [Radboudumc 9] Radiation Dosage law.invention Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14] 03 medical and health sciences 0302 clinical medicine EXCELLENT LOCAL-CONTROL Randomized controlled trial POSTOPERATIVE RADIOTHERAPY Interquartile range law RADIATION-THERAPY Preoperative Care medicine Clinical endpoint Humans 030212 general & internal medicine Prospective Studies CELL NEOADJUVANT THERAPY Neoadjuvant therapy Original Investigation Myxoid liposarcoma business.industry HEALTH-STATUS OUTCOMES Middle Aged medicine.disease Liposarcoma Myxoid RANDOMIZED-TRIAL Surgery Clinical trial Regimen SOFT-TISSUE SARCOMA Oncology 030220 oncology & carcinogenesis SURVIVAL Female Sarcoma business Rare cancers Radboud Institute for Health Sciences [Radboudumc 9] |
| Zdroj: | JAMA Oncology, 7(1):205865. American Medical Association JAMA Oncology, 7(1). American Medical Association JAMA Oncology, 7(1). AMER MEDICAL ASSOC Jama Oncology, 7 JAMA Oncol JAMA oncology, 7(1), 1-8. AMER MEDICAL ASSOC Jama Oncology, 7, 1 |
| ISSN: | 2374-2437 |
| DOI: | 10.1001/jamaoncol.2020.5865 |
| Popis: | Item does not contain fulltext IMPORTANCE: Currently, preoperative radiotherapy for all soft-tissue sarcomas is identical at a 50-Gy dose level, which can be associated with morbidity, particularly wound complications. The observed clinical radiosensitivity of the myxoid liposarcoma subtype might offer the possibility to reduce morbidity. OBJECTIVE: To assess whether a dose reduction of preoperative radiotherapy for myxoid liposarcoma would result in comparable oncological outcome with less morbidity. DESIGN, SETTING, AND PARTICIPANTS: The Dose Reduction of Preoperative Radiotherapy in Myxoid Liposarcomas (DOREMY) trial is a prospective, single-group, phase 2 nonrandomized controlled trial being conducted in 9 tertiary sarcoma centers in Europe and the US. Participants include adults with nonmetastatic, biopsy-proven and translocation-confirmed myxoid liposarcoma of the extremity or trunk who were enrolled between November 24, 2010, and August 1, 2019. Data analyses, using both per-protocol and intention-to-treat approaches, were conducted from November 24, 2010, to January 31, 2020. INTERVENTIONS: The experimental preoperative radiotherapy regimen consisted of 36 Gy in once-daily 2-Gy fractions, with subsequent definitive surgical resection after an interval of 4 or more weeks. MAIN OUTCOMES AND MEASURES: As a short-term evaluable surrogate for local control, the primary end point was centrally reviewed pathologic treatment response. The experimental regimen was regarded as a success when 70% or more of the resection specimens showed extensive treatment response, defined as 50% or greater of the tumor volume containing treatment effects. Morbidity outcomes consisted of wound complications and late toxic effects. RESULTS: Among the 79 eligible patients, 44 (56%) were men and the median (interquartile range) age was 45 (39-56) years. Two patients did not undergo surgical resection because of intercurrent metastatic disease. Extensive pathological treatment response was observed in 70 of 77 patients (91%; posterior mean, 90.4%; 95% highest probability density interval, 83.8%-96.4%). The local control rate was 100%. The rate of wound complication requiring intervention was 17%, and the rate of grade 2 or higher toxic effects was 14%. CONCLUSIONS AND RELEVANCE: The findings of the DOREMY nonrandomized clinical trial suggest that deintensification of preoperative radiotherapy dose is effective and oncologically safe and is associated with less morbidity than historical controls, although differences in radiotherapy techniques and follow-up should be considered. A 36-Gy dose delivered in once-daily 2-Gy fractions is proposed as a dose-fractionation approach for myxoid liposarcoma, given that phase 3 trials are logistically impossible to execute in rare cancers. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02106312. |
| Databáze: | OpenAIRE |
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