Risk of COVID-19 death for people with a pre-existing cancer diagnosis prior to COVID-19-vaccination: A systematic review and meta-analysis

Julia Steinberg* (Corresponding Author), Suzanne Hughes, Harriet Hui, Matthew J Allsop, Sam Egger, Michael David, Michael Caruana, Peter Coxeter, Chelsea Carle, Tonia Onyeka, Isabel Rewais, Maria J Monroy Iglesias, Nuria Vives, Feixue Wei, Derrick Bary Abila, Giulia Carreras, Marilina Santero, Emma L O'Dowd, Gigi Lui, Musliu Adetola TolaniMaeve Mullooly, Shing Fung Lee, Rebecca Landy, Sharon J B Hanley, Gemma Binefa, Charlene M McShane, Muluken Gizaw, Poongulali Selvamuthu, Houda Boukheris, Annet Nakaganda, Isil Ergin, Fabio Ynoe Moraes, Nahari Timilshina, Ashutosh Kumar, Diama B Vale, Ana Molina-Barceló, Lisa M Force, Denise Joan Campbell, Yuqing Wang, Fang Wan, Anna-Lisa Baker, Ramnik Singh, Rehana Abdus Salam, Susan Yuill, Richa Shah, Iris Lansdorp-Vogelaar, Aasim Yusuf, Ajay Aggarwal, Raul Murillo, Julie S Torode, Erich V Kliewer, Freddie Bray, Kelvin K W Chan, BC Research Institute, Vancouver, British Columbia, Canada, Timothy P Hanna, Ophira Ginsburg, Mieke Van Hemelrijck, Richard Sullivan, Felipe Roitberg, André M Ilbawi, Isabelle Soerjomataram, Karen Canfell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

While previous reviews found a positive association between pre-existing cancer diagnosis and COVID-19-related death, most early studies did not distinguish long-term cancer survivors from those recently diagnosed/treated, nor adjust for important confounders including age. We aimed to consolidate higher-quality evidence on risk of COVID-19-related death for people with recent/active cancer (compared to people without) in the pre-COVID-19-vaccination period. We searched the WHO COVID-19 Global Research Database (20 December 2021), and Medline and Embase (10 May 2023). We included studies adjusting for age and sex, and providing details of cancer status. Risk-of-bias assessment was based on the Newcastle-Ottawa Scale. Pooled adjusted odds or risk ratios (aORs, aRRs) or hazard ratios (aHRs) and 95% confidence intervals (95% CIs) were calculated using generic inverse-variance random-effects models. Random-effects meta-regressions were used to assess associations between effect estimates and time since cancer diagnosis/treatment. Of 23 773 unique title/abstract records, 39 studies were eligible for inclusion (2 low, 17 moderate, 20 high risk of bias). Risk of COVID-19-related death was higher for people with active or recently diagnosed/treated cancer (general population: aOR = 1.48, 95% CI: 1.36-1.61, I2  = 0; people with COVID-19: aOR = 1.58, 95% CI: 1.41-1.77, I2  = 0.58; inpatients with COVID-19: aOR = 1.66, 95% CI: 1.34-2.06, I2  = 0.98). Risks were more elevated for lung (general population: aOR = 3.4, 95% CI: 2.4-4.7) and hematological cancers (general population: aOR = 2.13, 95% CI: 1.68-2.68, I2  = 0.43), and for metastatic cancers. Meta-regression suggested risk of COVID-19-related death decreased with time since diagnosis/treatment, for example, for any/solid cancers, fitted aOR = 1.55 (95% CI: 1.37-1.75) at 1 year and aOR = 0.98 (95% CI: 0.80-1.20) at 5 years post-cancer diagnosis/treatment. In conclusion, before COVID-19-vaccination, risk of COVID-19-related death was higher for people with recent cancer, with risk depending on cancer type and time since diagnosis/treatment.

Original languageEnglish
Pages (from-to)1394-1412
Number of pages19
JournalInternational Journal of Cancer
Volume154
Issue number8
Early online date11 Dec 2023
DOIs
Publication statusE-pub ahead of print - 11 Dec 2023

Bibliographical note

Research Funding
National Health and Medical Research Council. Grant Number: APP1194679
World Health Organization
Article Funding
Open access publishing facilitated by The University of Sydney, as part of the Wiley - The University of Sydney agreement via the Council of Australian University Librarians.

Keywords

  • Cancer
  • Covid-19
  • death
  • meta-analysis
  • systematic review

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