Comparison of 5 × 5 Gy and 10 × 3 Gy for metastatic spinal cord compression using data from three prospective trials

Radiation Oncology

Niels H. Hollaender¹  Jon Cacicedo²  Steven E. Schild³  Raquel Ciervide⁴  Antonio J. Conde-Moreno⁵  Dirk Rades⁶  Barbara Segedin⁷  Darejan Lomidze⁸ 

[1] Department of Oncology and Palliative Units, Zealand University Hospital, Naestved, Denmark;Department of Radiation Oncology, Cruces University Hospital/Biocruces Health Research Institute, Barakaldo, Spain;Department of Radiation Oncology, Mayo Clinic, Scottsdale, AZ, USA;Department of Radiation Oncology, University Hospital HM Hospitales, Sanchinarro, Madrid, Spain;Department of Radiation Oncology, University and Polytechnic Hospital La Fe, Valencia, Spain;Department of Radiation Oncology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany;Department of Radiotherapy, Institute of Oncology Ljubljana, Ljubljana, Slovenia;Radiation Oncology Department, HTMC University Clinic Tbilisi, Tbilisi, Georgia;

关键词: Metastatic spinal cord compression;    Radiotherapy alone;    Local progression-free survival;    Motor function;    Ambulatory status;    Overall survival;   

DOI  :  10.1186/s13014-020-01737-7

来源: Springer

【 摘 要 】

BackgroundIn 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.MethodsForty 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).ResultsAfter 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).Conclusions5 × 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.

【 授权许可】

CC BY