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Pharmacotherapy . Beneficial and Harmful Outcomes of Tocilizumab in Severe COVID-19: A Systematic Review and Meta-Analysis

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  • Pharmacotherapy . Beneficial and Harmful Outcomes of Tocilizumab in Severe COVID-19: A Systematic Review and Meta-Analysis


    Pharmacotherapy


    . 2021 Sep 24.
    doi: 10.1002/phar.2627. Online ahead of print.
    Beneficial and Harmful Outcomes of Tocilizumab in Severe COVID-19: A Systematic Review and Meta-Analysis


    Manuel Rubio-Rivas 1 , Carlos G Forero 2 , Jose María Mora-Luján 1 , Abelardo Montero 1 , Francesc Formiga 1 , Narcís A Homs 1 , Joan Albà-Albalate 1 , Laura Sánchez 1 , Jordi Rello 2 3 4 , Xavier Corbella 1 2



    Affiliations

    Abstract

    Introduction: The results of studies of tocilizumab (TCZ) in COVID-19 are contradictory. Our study aims to update the medical evidence from controlled observational studies and randomized clinical trials (RCT) on the use of TCZ in hospitalized patients with COVID-19.
    Methods: We searched the following databases from January 1, 2020 to April 13, 2021 (date of the last search): MEDLINE database through the PubMed search engine and Scopus, using the terms ("COVID-19" [Supplementary Concept]) AND "tocilizumab" [Supplementary Concept]).
    Results: 64 studies were included in the present study, 54 were controlled observational studies (50 retrospective and 4 prospective) and 10 were RCT. The overall results provided data from 20,616 hospitalized patients with COVID-19: 7,668 patients received TCZ in addition to standard of care (SOC) (including 1,915 patients admitted to intensive care units (ICU) with reported mortality), and 12,948 patients only receiving SOC (including 4,410 patients admitted to ICU with reported mortality). After applying the random-effects model, hospital-wide (including ICU) pooled mortality odds ratio (OR) of patients with COVID-19 treated with TCZ was 0.73 (95% confidence interval (CI)= 0.56-0.93). The pooled hospital-wide mortality OR was 1.25 (95% CI = 0.74-2.18) in patients admitted at conventional wards versus 0.66 (95% CI = 0.59-0.76) in patients admitted to the ICU. The pooled OR of hospital-wide mortality (including ICU) of COVID-19 patients treated with TCZ plus corticosteroids (CS) was 0.67 (95% CI = 0.54-0.84). The pooled in-hospital mortality OR was 0.71 (95% CI = 0.35-1.42) when TCZ was early administered (≤10 days from symptom onset) versus 0.83 (95% CI 0.48-1.45) for late administration (>10 days from symptom onset). The meta-analysis did not find significantly higher risk for secondary infections in COVID-19 patients treated with TCZ.
    Conclusions: TCZ prevented mortality in patients hospitalized for COVID-19. This benefit was seen to a greater extent in patients receiving concomitant CS and when TCZ administration occurred within the first 10 days after symptom onset.

    Keywords: COVID-19; Coronavirus; Meta-analysis; SARS-CoV-2; Systematic review; Tocilizumab.

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