Treatment With Stereotactic Ablative Radiotherapy for Up to 5 Oligometastases in Patients With Cancer

SABR波动模型 医学 人口 前列腺癌 放射治疗 癌症 离格 乳腺癌 肺癌 队列 肿瘤科 内科学 外科 随机波动 波动性(金融) 环境卫生 金融经济学 经济
作者
Robert Olson,Will Jiang,Mitchell Liu,Alanah Bergman,Devin Schellenberg,Benjamin Mou,Abraham Alexander,Hannah Carolan,Fred Hsu,Stacy Miller,Siavash Atrchian,Elisa Chan,Clement Ho,Islam Mohamed,Angela Lin,Tanya Berrang,Andrew Bang,Nick Chng,Quinn Matthews,Sarah Baker,Vicky Huang,Ante Mestrovic,Derek Hyde,C. Lund,Howard Pai,Boris Valev,Shilo Lefresene,Scott Tyldesley
出处
期刊:JAMA Oncology [American Medical Association]
卷期号:8 (11): 1644-1644 被引量:32
标识
DOI:10.1001/jamaoncol.2022.4394
摘要

After the publication of the landmark SABR-COMET trial, concerns arose regarding high-grade toxic effects of treatment with stereotactic ablative body radiotherapy (SABR) for oligometastases.To document toxic effects of treatment with SABR in a large cohort from a population-based, provincial cancer program.From November 2016 to July 2020, 381 patients across all 6 cancer centers in British Columbia were treated in this single-arm, phase 2 trial of treatment with SABR for patients with oligometastatic or oligoprogressive disease. During this period, patients were only eligible to receive treatment with SABR in these settings in trials within British Columbia; therefore, this analysis is population based, with resultant minimal selection bias compared with previously published SABR series.Stereotactic ablative body radiotherapy to up to 5 metastases.Rate of grade 2, 3, 4, and 5 toxic effects associated with SABR.Among 381 participants (122 women [32%]), the mean (SD; range) age was 68 (11.1; 30-97) years, and the median (range) follow-up was 25 (1-54) months. The most common histological findings were prostate cancer (123 [32%]), colorectal cancer (63 [17%]), breast cancer (42 [11%]), and lung cancer (33 [9%]). The number of SABR-treated sites were 1 (263 [69%]), 2 (82 [22%]), and 3 or more (36 [10%]). The most common sites of SABR were lung (188 [34%]), nonspine bone (136 [25%]), spine (85 [16%]), lymph nodes (78 [14%]), liver (29 [5%]), and adrenal (15 [3%]). Rates of grade 2, 3, 4, and 5 toxic effects associated with SABR (based on the highest-grade toxic effect per patient) were 14.2%; (95% CI, 10.7%-17.7%), 4.2% (95% CI, 2.2%-6.2%), 0%, and 0.3% (95% CI, 0%-0.8%), respectively. The cumulative incidence of grade 2 or higher toxic effects associated with SABR at year 2 by Kaplan-Meier analysis was 8%, and for grade 3 or higher, 4%.This single-arm, phase 2 clinical trial found that the incidence of grade 3 or higher SABR toxic effects in this population-based study was less than 5%. Furthermore, the rates of grade 2 or higher toxic effects (18.6%) were lower than previously published for SABR-COMET (29%). These results suggest that SABR treatment for oligometastases has acceptable rates of toxic effects and potentially support further enrollment in randomized phase 3 clinical trials.ClinicalTrials.gov Identifier: NCT02933242.
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