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Published on: February 17, 2022
Treatment With Tocilizumab for Patients With COVID-19 Infections: A Case-Series Study
Yoonsun Mo1,2, Obed Adarkwah2, John Zeibeq2
1Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, New York, USA.
Abstract:
Tocilizumab (TCZ), a humanized monoclonal antibody targeting the interleukin-6 receptor, holds the potential for treating coronavirus disease 2019 (COVID-19) patients, particularly those at high risk of cytokine storm syndrome. However, data regarding the clinical impact of treatment with TCZ in patients with COVID-19 are limited. This study was conducted to evaluate the safety and effectiveness of TCZ as an adjunct therapy for the treatment of severe COVID-19 infection. This was a retrospective observational chart review of confirmed COVID-19 patients who received TCZ, along with other COVID-19 therapies. The outcomes of interest included changes in vital signs such as temperature and laboratory biomarkers, duration of mechanical ventilation, adverse events possibly associated with TCZ, and intensive care unit and hospital lengths of stay. This study included 38 patients with an average age of 63 years (IQR, 48-70 years). The average dose of TCZ given was 519 ± 61 mg. Median C-reactive protein significantly decreased following TCZ administration (189.9 vs 54.8 mg/L, P = .003). Nineteen of all febrile patients before the initiation of TCZ (73%) became fever free on the fourth day of TCZ treatment. Following TCZ treatment, 11 patients developed infections because of multidrug-resistant bacteria, and elevated liver transaminases were observed in 6 patients. The preliminary findings of this study suggested TCZ appeared to ameliorate COVID-19-related cytokine storm syndrome. However, large randomized, controlled trials are needed to investigate whether treatment with TCZ is associated with better outcomes in COVID-19.
Insights
Tocilizumab (TCZ) may help severe COVID-19 patients by reducing inflammation and fever. While preliminary, this suggests TCZ could be a valuable treatment for cytokine storm syndrome in COVID-19 patients.
Area of Science:
- Immunology
- Infectious Diseases
- Pharmacology
Background:
- Interleukin-6 receptor inhibition with Tocilizumab (TCZ) is a potential treatment for severe COVID-19.
- Cytokine storm syndrome is a serious complication of COVID-19.
- Limited data exists on TCZ's clinical impact in COVID-19 patients.
Purpose of the Study:
- To evaluate the safety and effectiveness of TCZ as an adjunct therapy for severe COVID-19.
- To assess TCZ's impact on vital signs, laboratory biomarkers, and clinical outcomes.
Main Methods:
- Retrospective observational chart review of 38 confirmed COVID-19 patients treated with TCZ.
- Analysis of changes in temperature, C-reactive protein, duration of mechanical ventilation, and length of stay.
- Monitoring for adverse events, including infections and elevated liver enzymes.
Main Results:
- Median C-reactive protein significantly decreased post-TCZ administration (189.9 to 54.8 mg/L, P = .003).
- 73% of febrile patients became fever-free by day four of TCZ treatment.
- Adverse events included multidrug-resistant bacterial infections (11 patients) and elevated liver transaminases (6 patients).
Conclusions:
- TCZ appears to ameliorate COVID-19-related cytokine storm syndrome.
- TCZ demonstrated potential in reducing key inflammatory markers and fever in severe COVID-19 patients.
- Further large randomized controlled trials are necessary to confirm TCZ's efficacy and safety in COVID-19 treatment.
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