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Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials
BACKGROUND: In a palliative situation like metastatic spinal cord compression (MSCC), overall treatment time of radiotherapy should be as short as possible. This study compared 5 × 5 Gy in 1 week to 10 × 3 Gy in 2 weeks in a prospective cohort. METHODS: Forty patients receiving 5 × 5 Gy in a phase I...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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BioMed Central
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7788916/ https://www.ncbi.nlm.nih.gov/pubmed/33413492 http://dx.doi.org/10.1186/s13014-020-01737-7 |
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author | Rades, Dirk Cacicedo, Jon Conde-Moreno, Antonio J. Segedin, Barbara Lomidze, Darejan Ciervide, Raquel Hollaender, Niels H. Schild, Steven E. |
author_facet | Rades, Dirk Cacicedo, Jon Conde-Moreno, Antonio J. Segedin, Barbara Lomidze, Darejan Ciervide, Raquel Hollaender, Niels H. Schild, Steven E. |
author_sort | Rades, Dirk |
collection | PubMed |
description | BACKGROUND: In a palliative situation like metastatic spinal cord compression (MSCC), overall treatment time of radiotherapy should be as short as possible. This study compared 5 × 5 Gy in 1 week to 10 × 3 Gy in 2 weeks in a prospective cohort. METHODS: Forty patients receiving 5 × 5 Gy in a phase II trial were matched 1:2 to 213 patients receiving 10 × 3 Gy in two previous prospective studies for tumor type, ambulatory status, time developing motor deficits, interval between tumor diagnosis and MSCC and visceral metastases. These factors were consistent in all three patients (triple) used for each 1:2 matching. Groups were compared for local progression-free survival (LPFS), motor function, ambulatory status, and overall survival (OS). RESULTS: After matching, 32 triples remained for analyses (N = 96 in total). Six-month LPFS-rates were 94% after 5 × 5 Gy and 87% after 10 × 3 Gy (p = 0.36), 6-month OS-rates 43% and 35% (p = 0.74). Improvement of motor function was achieved in 59% and 34% of patients (p = 0.028); overall response rates (improvement or no further progression of motor deficits) were 94% and 89% (p = 0.71). Post-treatment ambulatory rates were 81% after 5 × 5 Gy and 85% after 10 × 3 Gy (p = 0.61). Of non-ambulatory patients, 50% (6/12) and 46% (11/24) regained the ability to walk (p = 1.00). CONCLUSIONS: 5 × 5 Gy in 1 week appeared similarly effective as 10 × 3 Gy in 2 weeks. These results may not be applicable to long-term survivors and should be confirmed in a randomized trial directly comparing 5 × 5 Gy and 10 × 3 Gy. Trial registration clinicaltrials.gov NCT03070431. Registered 27 February 2017. |
format | Online Article Text |
id | pubmed-7788916 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-77889162021-01-07 Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials Rades, Dirk Cacicedo, Jon Conde-Moreno, Antonio J. Segedin, Barbara Lomidze, Darejan Ciervide, Raquel Hollaender, Niels H. Schild, Steven E. Radiat Oncol Short Report BACKGROUND: In a palliative situation like metastatic spinal cord compression (MSCC), overall treatment time of radiotherapy should be as short as possible. This study compared 5 × 5 Gy in 1 week to 10 × 3 Gy in 2 weeks in a prospective cohort. METHODS: Forty patients receiving 5 × 5 Gy in a phase II trial were matched 1:2 to 213 patients receiving 10 × 3 Gy in two previous prospective studies for tumor type, ambulatory status, time developing motor deficits, interval between tumor diagnosis and MSCC and visceral metastases. These factors were consistent in all three patients (triple) used for each 1:2 matching. Groups were compared for local progression-free survival (LPFS), motor function, ambulatory status, and overall survival (OS). RESULTS: After matching, 32 triples remained for analyses (N = 96 in total). Six-month LPFS-rates were 94% after 5 × 5 Gy and 87% after 10 × 3 Gy (p = 0.36), 6-month OS-rates 43% and 35% (p = 0.74). Improvement of motor function was achieved in 59% and 34% of patients (p = 0.028); overall response rates (improvement or no further progression of motor deficits) were 94% and 89% (p = 0.71). Post-treatment ambulatory rates were 81% after 5 × 5 Gy and 85% after 10 × 3 Gy (p = 0.61). Of non-ambulatory patients, 50% (6/12) and 46% (11/24) regained the ability to walk (p = 1.00). CONCLUSIONS: 5 × 5 Gy in 1 week appeared similarly effective as 10 × 3 Gy in 2 weeks. These results may not be applicable to long-term survivors and should be confirmed in a randomized trial directly comparing 5 × 5 Gy and 10 × 3 Gy. Trial registration clinicaltrials.gov NCT03070431. Registered 27 February 2017. BioMed Central 2021-01-07 /pmc/articles/PMC7788916/ /pubmed/33413492 http://dx.doi.org/10.1186/s13014-020-01737-7 Text en © The Author(s) 2021 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Short Report Rades, Dirk Cacicedo, Jon Conde-Moreno, Antonio J. Segedin, Barbara Lomidze, Darejan Ciervide, Raquel Hollaender, Niels H. Schild, Steven E. Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials |
title | Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials |
title_full | Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials |
title_fullStr | Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials |
title_full_unstemmed | Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials |
title_short | Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials |
title_sort | comparison of 5 × 5 gy and 10 × 3 gy for metastatic spinal cord compression using data from three prospective trials |
topic | Short Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7788916/ https://www.ncbi.nlm.nih.gov/pubmed/33413492 http://dx.doi.org/10.1186/s13014-020-01737-7 |
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