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Efficacy of tocilizumab in COVID-19: A review of the current evidence.
Sci Prog. 2021 Jul-Sep; 104(3):368504211030372.SP

Abstract

As cases of coronavirus 2019 (COVID-19) keep rising, reported deaths are increasing. Public health measures have been implemented with mixed efficacy. As vaccines are becoming more widely available and accessible globally, treating critically ill COVID-19 patients remains an issue with only dexamethasone found to be therapeutically effective to date. However, trials studying the efficacy of IL-6 inhibitors, namely tocilizumab have been underway with promising results. This paper is a narrative review that aims to review the current evidence provided by randomized clinical trials (RCT) for the use of tocilizumab in COVID-19. Electronic database searches were carried out in Medline, PubMed, Embase, Google Scholar, and ongoing clinical trial registries with the period set from January 1, 2020 to February 20, 2021. Prepublication manuscripts were found using the pre-print repository medRxiv. Keywords included "COVID-19,""coronavirus,""SARS-CoV-2,""sepsis,""pneumonia,""cytokine storm,""cytokine release syndrome,""IL-6 inhibitors," and "tocilizumab," as exact phrases, and a combination of subject headings according to databases syntax. Only trials with a clear and well-defined methodology, at least 100 patients recruited, and which have had results published either after peer review or in pre-print were included. In hospitalized patients with severe COVID-19, who are hypoxic and have a CRP ≥ 75 mg/L, the current evidence favors the use of a combination of tocilizumab and corticosteroids to reduce mortality, among other clinical benefits. There is also overwhelming evidence of the good safety profile of tocilizumab with only few cases of neutropenia reported with a decrease in infection rates. Tocilizumab is currently thought to work through the inhibition of IL-6 receptors (IL-6R), preventing downstream activation of pro-inflammatory reactions and cytokine release syndrome.

Authors+Show Affiliations

Global Health Institute, American University of Beirut, Hamra, Beirut, Lebanon.Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center, Hamra, Beirut, Lebanon.

Pub Type(s)

Journal Article
Comment

Language

eng

PubMed ID

34236264

Citation

Alam, Walid, and Abdul Rahman Bizri. "Efficacy of Tocilizumab in COVID-19: a Review of the Current Evidence." Science Progress, vol. 104, no. 3, 2021, p. 368504211030372.
Alam W, Bizri AR. Efficacy of tocilizumab in COVID-19: A review of the current evidence. Sci Prog. 2021;104(3):368504211030372.
Alam, W., & Bizri, A. R. (2021). Efficacy of tocilizumab in COVID-19: A review of the current evidence. Science Progress, 104(3), 368504211030372. https://doi.org/10.1177/00368504211030372
Alam W, Bizri AR. Efficacy of Tocilizumab in COVID-19: a Review of the Current Evidence. Sci Prog. 2021 Jul-Sep;104(3):368504211030372. PubMed PMID: 34236264.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Efficacy of tocilizumab in COVID-19: A review of the current evidence. AU - Alam,Walid, AU - Bizri,Abdul Rahman, PY - 2021/7/8/entrez PY - 2021/7/9/pubmed PY - 2021/7/14/medline KW - COVID-19 KW - IL-6 inhibitors KW - clinical outcomes KW - mortality KW - randomized clinical trial KW - review KW - tocilizumab SP - 368504211030372 EP - 368504211030372 JF - Science progress JO - Sci Prog VL - 104 IS - 3 N2 - As cases of coronavirus 2019 (COVID-19) keep rising, reported deaths are increasing. Public health measures have been implemented with mixed efficacy. As vaccines are becoming more widely available and accessible globally, treating critically ill COVID-19 patients remains an issue with only dexamethasone found to be therapeutically effective to date. However, trials studying the efficacy of IL-6 inhibitors, namely tocilizumab have been underway with promising results. This paper is a narrative review that aims to review the current evidence provided by randomized clinical trials (RCT) for the use of tocilizumab in COVID-19. Electronic database searches were carried out in Medline, PubMed, Embase, Google Scholar, and ongoing clinical trial registries with the period set from January 1, 2020 to February 20, 2021. Prepublication manuscripts were found using the pre-print repository medRxiv. Keywords included "COVID-19,""coronavirus,""SARS-CoV-2,""sepsis,""pneumonia,""cytokine storm,""cytokine release syndrome,""IL-6 inhibitors," and "tocilizumab," as exact phrases, and a combination of subject headings according to databases syntax. Only trials with a clear and well-defined methodology, at least 100 patients recruited, and which have had results published either after peer review or in pre-print were included. In hospitalized patients with severe COVID-19, who are hypoxic and have a CRP ≥ 75 mg/L, the current evidence favors the use of a combination of tocilizumab and corticosteroids to reduce mortality, among other clinical benefits. There is also overwhelming evidence of the good safety profile of tocilizumab with only few cases of neutropenia reported with a decrease in infection rates. Tocilizumab is currently thought to work through the inhibition of IL-6 receptors (IL-6R), preventing downstream activation of pro-inflammatory reactions and cytokine release syndrome. SN - 2047-7163 UR - https://www.unboundmedicine.com/medline/citation/34236264/Efficacy_of_tocilizumab_in_COVID-19:_A_review_of_the_current_evidence. L2 - https://journals.sagepub.com/doi/10.1177/00368504211030372?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -