Omar Abdel-Rahman1, Mona Fouad2. 1. Clinical Oncology Department, Faculty of Medicine, Ain Shams University, Lotfy Elsayed Street, Cairo 11665, Egypt omar.abdelrhman@med.asu.edu.eg. 2. Medical Microbiology and Immunology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Abstract
BACKGROUND: A meta-analysis of the risk of pneumonitis associated with the use of immune checkpoint inhibitors in cancer patients has been conducted. METHODS: Eligible publications included randomized trials of cancer patients on immune checkpoint inhibitors, describing events of all-grade and high-grade pneumonitis. RESULTS: After exclusion of noneligible citations, a total of 11 clinical trials were eligible for the meta-analysis. The odds ratio was 3.96 [95% confidence interval (CI): 2.02-7.79; p < 0.0001] for all-grade pneumonitis and 2.87 (95% CI: 0.90-9.20; p = 0.08) for high-grade pneumonitis. Moreover, the odds ratio of all-grade pneumonitis with a nivolumab/ipilimumab combination versus ipilimumab monotherapy was 3.68 (95% CI: 1.59-8.50; p = 0.002) and, for high-grade pneumonitis, it was 1.86(95% CI: 0.36-9.53; p = 0.46). Subgroup analysis did not reveal a difference between lung cancer patients and other cancer patients in the risk of pneumonitis. CONCLUSIONS: Our analysis provided evidence that the use of immune checkpoint inhibitors is associated with an increased risk of all-grade pneumonitis compared with chemotherapy or placebo controls.
BACKGROUND: A meta-analysis of the risk of pneumonitis associated with the use of immune checkpoint inhibitors in cancerpatients has been conducted. METHODS: Eligible publications included randomized trials of cancerpatients on immune checkpoint inhibitors, describing events of all-grade and high-grade pneumonitis. RESULTS: After exclusion of noneligible citations, a total of 11 clinical trials were eligible for the meta-analysis. The odds ratio was 3.96 [95% confidence interval (CI): 2.02-7.79; p < 0.0001] for all-grade pneumonitis and 2.87 (95% CI: 0.90-9.20; p = 0.08) for high-grade pneumonitis. Moreover, the odds ratio of all-grade pneumonitis with a nivolumab/ipilimumab combination versus ipilimumab monotherapy was 3.68 (95% CI: 1.59-8.50; p = 0.002) and, for high-grade pneumonitis, it was 1.86(95% CI: 0.36-9.53; p = 0.46). Subgroup analysis did not reveal a difference between lung cancerpatients and other cancerpatients in the risk of pneumonitis. CONCLUSIONS: Our analysis provided evidence that the use of immune checkpoint inhibitors is associated with an increased risk of all-grade pneumonitis compared with chemotherapy or placebo controls.
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