Evangeline Samuel1, Gabrielle Lie2, Adithya Balasubramanian2, Alison Hiong3, Yeojeong So1, Mark Voskoboynik3, Maggie Moore3, Mark Shackleton4, Andrew Haydon4, Tom John2, Paul L R Mitchell2, Ben Markman5, Peter Briggs5, Sagun Parakh6. 1. Department of Medical Oncology, Monash Health, Clayton, Melbourne, Australia. 2. Department of Medical Oncology, Austin Health, Heidelberg, Melbourne, Australia. 3. Department of Medical Oncology, Alfred Health, Melbourne, Australia. 4. Department of Medical Oncology, Alfred Health, Melbourne, Australia; School of Clinical Sciences, Monash University, Melbourne, Australia. 5. Department of Medical Oncology, Monash Health, Clayton, Melbourne, Australia; School of Clinical Sciences, Monash University, Melbourne, Australia. 6. Department of Medical Oncology, Monash Health, Clayton, Melbourne, Australia; School of Clinical Sciences, Monash University, Melbourne, Australia. Electronic address: sagun.parakh@monash.edu.
Abstract
BACKGROUND: The impact of radiotherapy (RT) on the efficacy and toxicity of immune checkpoint inhibitors (ICIs) in patients with metastatic non-small-cell lung cancer (NSCLC) is unclear. MATERIALS AND METHODS: We identified patients with metastatic NSCLC treated with the anti-programmed death 1 antibodies nivolumab or pembrolizumab between January 2016 and May 2019 at 3 tertiary centers, who were also treated with palliative RT either during or within 3 months of starting anti-programmed death 1 treatment. Patient demographics, tumor characteristics, and treatment history were collected. Response rates, progression-free survival (PFS), and overall survival (OS) were analyzed and correlated with RT use. RESULTS: A total of 269 patients were identified, with a median follow-up of 19.4 months. The median age was 70 years (range, 35-90 years), and they were 63% male, 60% smokers, and 65% had adenocarcinoma histology. At the commencement of ICI treatment, the majority (86%) had ≥ 1 line of prior therapy and 34% had brain metastases. A total of 102 (38%) patients received RT within 3 months of starting ICI or subsequently during ICI treatment. Of patients that received RT, 86 (84%) received conventional hypofractionated RT, and, in the majority, 81 (79%) the intent of RT was symptom control. The use of RT did not increase grade 3/4 immune-related adverse events. The overall median PFS was 2.0 months (95% confidence interval, 1.3-2.6 months) and the median OS was 9.0 months (95% confidence interval, 6.4-9.5 months). There were no significant differences in median PFS (3.0 vs. 2.0 months; P = .515) and median OS (9.0 vs. 9.0 months; P = .917) in the patients who received RT versus those that did not. CONCLUSIONS: In patients with metastatic NSCLC, the addition of RT to ICI was not associated with increased toxicity or improved survival. Crown
BACKGROUND: The impact of radiotherapy (RT) on the efficacy and toxicity of immune checkpoint inhibitors (ICIs) in patients with metastatic non-small-cell lung cancer (NSCLC) is unclear. MATERIALS AND METHODS: We identified patients with metastatic NSCLC treated with the anti-programmed death 1 antibodies nivolumab or pembrolizumab between January 2016 and May 2019 at 3 tertiary centers, who were also treated with palliative RT either during or within 3 months of starting anti-programmed death 1 treatment. Patient demographics, tumor characteristics, and treatment history were collected. Response rates, progression-free survival (PFS), and overall survival (OS) were analyzed and correlated with RT use. RESULTS: A total of 269 patients were identified, with a median follow-up of 19.4 months. The median age was 70 years (range, 35-90 years), and they were 63% male, 60% smokers, and 65% had adenocarcinoma histology. At the commencement of ICI treatment, the majority (86%) had ≥ 1 line of prior therapy and 34% had brain metastases. A total of 102 (38%) patients received RT within 3 months of starting ICI or subsequently during ICI treatment. Of patients that received RT, 86 (84%) received conventional hypofractionated RT, and, in the majority, 81 (79%) the intent of RT was symptom control. The use of RT did not increase grade 3/4 immune-related adverse events. The overall median PFS was 2.0 months (95% confidence interval, 1.3-2.6 months) and the median OS was 9.0 months (95% confidence interval, 6.4-9.5 months). There were no significant differences in median PFS (3.0 vs. 2.0 months; P = .515) and median OS (9.0 vs. 9.0 months; P = .917) in the patients who received RT versus those that did not. CONCLUSIONS: In patients with metastatic NSCLC, the addition of RT to ICI was not associated with increased toxicity or improved survival. Crown
Authors: Zhengfei Zhu; Jianjiao Ni; Xuwei Cai; Shengfa Su; Hongqing Zhuang; Zhenzhou Yang; Ming Chen; Shenglin Ma; Conghua Xie; Yaping Xu; Jiancheng Li; Hong Ge; Anwen Liu; Lujun Zhao; Chuangzhou Rao; Congying Xie; Nan Bi; Zhouguang Hui; Guangying Zhu; Zhiyong Yuan; Jun Wang; Lina Zhao; Wei Zhou; Chai Hong Rim; Arturo Navarro-Martin; Ben G L Vanneste; Dirk De Ruysscher; J Isabelle Choi; Jacek Jassem; Joe Y Chang; Lucyna Kepka; Lukas Käsmann; Michael T Milano; Paul Van Houtte; Rafal Suwinski; Alberto Traverso; Hiroshi Doi; Yang-Gun Suh; Georges Noël; Natsuo Tomita; Roman O Kowalchuk; Terence T Sio; Baosheng Li; Bing Lu; Xiaolong Fu Journal: Transl Lung Cancer Res Date: 2022-09