1. Compassionate Use of Tocilizumab for Treatment of SARS-CoV-2 Pneumonia
- Author
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Sanjeev Kumar, Benjamin Bluen, Hai P Tran, Stanley C. Jordan, Noriko Ammerman, Jillian Oft, R. Zabner, Cyril R. Gaultier, Rita Shane, P. Zakowski, Ashley Vo, Hayden Lowenstein, Peter Chen, Edmund Huang, Gregory Marks, Shili Ge, Ethan A. Smith, Catherine Le, and Mieko Toyoda
- Subjects
musculoskeletal diseases ,0301 basic medicine ,Microbiology (medical) ,medicine.medical_specialty ,medicine.medical_treatment ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Tocilizumab ,Internal medicine ,Major Article ,medicine ,030212 general & internal medicine ,skin and connective tissue diseases ,Adverse effect ,Mechanical ventilation ,Acute respiratory distress syndrome ,business.industry ,interleukin-6 ,COVID-19 ,Interleukin ,medicine.disease ,Clinical trial ,Pneumonia ,AcademicSubjects/MED00290 ,030104 developmental biology ,Infectious Diseases ,Cytokine ,chemistry ,SARS-CoV2 ,business ,Cytokine storm - Abstract
Background Preliminary data from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pneumonia patients indicate that a cytokine storm may increase morbidity and mortality. Tocilizumab (anti-IL-6R) is approved by the Food and Drug Administration for treatment of cytokine storm associated with chimeric antigen receptor T-cell therapy. Here we examined compassionate use of tocilizumab in patients with SARS-CoV-2 pneumonia. Methods We report on a single-center study of tocilizumab in hospitalized patients with SARS-CoV-2 pneumonia. All patients had confirmed SARS-CoV-2 pneumonia and oxygen saturations Results Twenty-seven SARS-CoV-2 pneumonia patients received one 400 mg dose of tocilizumab. Interleukin (IL)-6 was the predominant cytokine detected at tocilizumab treatment. Significant reductions in temperature and CRP were seen post-tocilizumab. However, 4 patients did not show rapid CRP declines, of whom 3 had poorer outcomes. Oxygen and vasopressor requirements diminished over the first week post-tocilizumab. Twenty-two patients required mechanical ventilation; at last follow-up, 16 were extubated. Adverse events and serious adverse events were minimal, but 2 deaths (7.4%) occurred that were felt unrelated to tocilizumab. Conclusions Compared to published reports on the morbidity and mortality associated with SARS-CoV-2, tocilizumab appears to offer benefits in reducing inflammation, oxygen requirements, vasopressor support, and mortality. The rationale for tocilizumab treatment is supported by detection of IL-6 in pathogenic levels in all patients. Additional doses of tocilizumab may be needed for those showing slow declines in CRP. Proof of efficacy awaits randomized, placebo-controlled clinical trials.
- Published
- 2020
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