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BMC Cancer
. 2025 May 22;25(1):922.
doi: 10.1186/s12885-025-14318-2. Early mortality in patients with cancer and COVID-19 infection treated with immunotherapy
Jacques Raphael 1 2 , Britney Le 3 , Simron Singh 4 , Phillip Blanchette 5 3 , Maureen Trudeau 4 , Melody Lam 3 , Matthew Cheung 4
Affiliations
Background: Immunotherapy in the presence of COVID-19 infections raises concerns because of potential overlapping clinical complications and immune system enhancement. Further investigation is warranted to establish its safety and to improve clinical decisions.
Methods: We conducted a retrospective cohort study using linked health administrative data from Ontario, Canada to assess 30-day mortality in patients with solid tumors who were treated with immunotherapy within 120 days before testing positive for COVID-19. A stepwise multivariable logistic regression model was used to identify clinical factors associated with 30-day mortality.
Results: Between January 2020 and April 2023, 281 patients tested positive for COVID-19 and were included in our study. The mean age was 68 (Standard Deviation: 10.3), 45% (127/281) were females and 58% (163/281) had lung cancer. 59% of patients (167/281) were treated with single agent immunotherapy, and almost 80% received at least one dose of COVID-19 vaccine. The 30-day mortality was 22% (63/281) and < 5% of patients were admitted to ICU or required ventilation. Factors associated with higher mortality were older age (Odds Ratio (OR) 1.60, 95% confidence interval (CI) 1.07-2.39), prior radiation therapy (OR 2.38, 95%CI 1.08-5.28), lower hemoglobin (< 10 g/dl) (OR 4.08, 95%CI 1.89-8.82) and higher leucocytes count (> 11,000/mm3) (OR 3.63, 95%CI 1.55-8.52).
Conclusions: Immunotherapy does not seem to increase the risk of 30-day mortality in patients with COVID-19 infections compared to published outcomes of patients with cancer and COVID-19. Mortality was associated with certain clinical characteristics that need to be carefully examined when prescribing immunotherapy during future comparable pandemics.
Keywords: COVID-19; Immunotherapy; Mortality; Ontario; Solid tumors.
. 2025 May 22;25(1):922.
doi: 10.1186/s12885-025-14318-2. Early mortality in patients with cancer and COVID-19 infection treated with immunotherapy
Jacques Raphael 1 2 , Britney Le 3 , Simron Singh 4 , Phillip Blanchette 5 3 , Maureen Trudeau 4 , Melody Lam 3 , Matthew Cheung 4
Affiliations
- PMID: 40405109
- DOI: 10.1186/s12885-025-14318-2
Background: Immunotherapy in the presence of COVID-19 infections raises concerns because of potential overlapping clinical complications and immune system enhancement. Further investigation is warranted to establish its safety and to improve clinical decisions.
Methods: We conducted a retrospective cohort study using linked health administrative data from Ontario, Canada to assess 30-day mortality in patients with solid tumors who were treated with immunotherapy within 120 days before testing positive for COVID-19. A stepwise multivariable logistic regression model was used to identify clinical factors associated with 30-day mortality.
Results: Between January 2020 and April 2023, 281 patients tested positive for COVID-19 and were included in our study. The mean age was 68 (Standard Deviation: 10.3), 45% (127/281) were females and 58% (163/281) had lung cancer. 59% of patients (167/281) were treated with single agent immunotherapy, and almost 80% received at least one dose of COVID-19 vaccine. The 30-day mortality was 22% (63/281) and < 5% of patients were admitted to ICU or required ventilation. Factors associated with higher mortality were older age (Odds Ratio (OR) 1.60, 95% confidence interval (CI) 1.07-2.39), prior radiation therapy (OR 2.38, 95%CI 1.08-5.28), lower hemoglobin (< 10 g/dl) (OR 4.08, 95%CI 1.89-8.82) and higher leucocytes count (> 11,000/mm3) (OR 3.63, 95%CI 1.55-8.52).
Conclusions: Immunotherapy does not seem to increase the risk of 30-day mortality in patients with COVID-19 infections compared to published outcomes of patients with cancer and COVID-19. Mortality was associated with certain clinical characteristics that need to be carefully examined when prescribing immunotherapy during future comparable pandemics.
Keywords: COVID-19; Immunotherapy; Mortality; Ontario; Solid tumors.