Cancer medicine · 2021
Real world outcomes of combination and timing of immunotherapy with radiotherapy for melanoma with brain metastases.
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Moyers Justin T, Chong Esther G, Peng Jiahao, Tsai Hsin Hsiang Clarence, Sufficool Daniel, Shavlik David, Nagaraj Gayathri
Аннотация
INTRODUCTION: Immunotherapy (IT) and radiotherapy (RT) have improved overall survival in patients with melanoma with brain metastasis (MBM). We examined the real-world survival impact of IT and RT combination and timing strategies.
MATERIALS AND METHODS: From the facility-based National Cancer Database (NCDB) data set, 3008 cases of MBM were identified between 2011 and 2015. Six treatment cohorts were identified: stereotactic radiosurgery (SRS) + IT, SRS alone, whole brain radiotherapy (WBRT) + IT, WBRT alone, IT alone, and none. Concurrent therapy was defined as IT given within 28 days before or after RT; nonconcurrent defined as IT administered within 28-90 days of RT. The co-primary outcomes were propensity score-adjusted overall survival by treatment regimen and overall survival by RT and IT timing.
RESULTS: Median overall survival (mOS) was performed for each treatment category; SRS +IT 15.77 m; (95%CI 12.13-21.29), SRS alone (9.33 m; 95%CI: 8.0-11.3), IT alone (7.29 m; 95%CI: 5.35-12.91), WBRT +IT (4.89 m; 95%CI: 3.65-5.92), No RT or IT (3.29 m; 95%CI: 2.96-3.75), and WBRT alone (3.12 m; 95%CI 2.79-3.52). By propensity score matching, mOS for SRS +IT (15.5 m; 95%CI: 11.5-20.2) was greater than SRS alone (10.1 m; 95%CI: 8.4-11.8) (p = 0.010), and median survival for WBRT +IT (4.6 m; 95%CI: 3.4-5.6) was greater than WBRT alone (2.9 m; 95%CI: 2.5-3.5) (p < 0.001). In the SRS +IT group, 24-month landmark survival was 47% (95%CI; 42-52) for concurrent versus 37% (95%CI; 30-44) for nonconcurrent (p = 0.40).
CONCLUSION: Those who received IT in addition to WBRT and SRS experienced longer survival compared to RT modalities alone, while those receiving concurrent SRS and IT trended toward improved survival versus nonconcurrent therapy.
MATERIALS AND METHODS: From the facility-based National Cancer Database (NCDB) data set, 3008 cases of MBM were identified between 2011 and 2015. Six treatment cohorts were identified: stereotactic radiosurgery (SRS) + IT, SRS alone, whole brain radiotherapy (WBRT) + IT, WBRT alone, IT alone, and none. Concurrent therapy was defined as IT given within 28 days before or after RT; nonconcurrent defined as IT administered within 28-90 days of RT. The co-primary outcomes were propensity score-adjusted overall survival by treatment regimen and overall survival by RT and IT timing.
RESULTS: Median overall survival (mOS) was performed for each treatment category; SRS +IT 15.77 m; (95%CI 12.13-21.29), SRS alone (9.33 m; 95%CI: 8.0-11.3), IT alone (7.29 m; 95%CI: 5.35-12.91), WBRT +IT (4.89 m; 95%CI: 3.65-5.92), No RT or IT (3.29 m; 95%CI: 2.96-3.75), and WBRT alone (3.12 m; 95%CI 2.79-3.52). By propensity score matching, mOS for SRS +IT (15.5 m; 95%CI: 11.5-20.2) was greater than SRS alone (10.1 m; 95%CI: 8.4-11.8) (p = 0.010), and median survival for WBRT +IT (4.6 m; 95%CI: 3.4-5.6) was greater than WBRT alone (2.9 m; 95%CI: 2.5-3.5) (p < 0.001). In the SRS +IT group, 24-month landmark survival was 47% (95%CI; 42-52) for concurrent versus 37% (95%CI; 30-44) for nonconcurrent (p = 0.40).
CONCLUSION: Those who received IT in addition to WBRT and SRS experienced longer survival compared to RT modalities alone, while those receiving concurrent SRS and IT trended toward improved survival versus nonconcurrent therapy.