Journal
JOURNAL OF CLINICAL MEDICINE
Volume 11, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/jcm11010107
Keywords
SARS-CoV-2; antiviral; Poland; tocilizumab; COVID-19; interleukin-6
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The study aimed to describe the clinical outcomes and changes in inflammatory markers in Polish patients treated with tocilizumab. The results showed that patients who died had higher levels of IL-6 and LDH compared to survivors, and further increase in LDH and IL-6 after administration of tocilizumab was a prognostic factor for unfavorable outcomes.
The COVID-19 pandemic requires the development of effective methods for the treatment of severe cases. We aimed to describe clinical outcomes and changes in inflammatory markers in Polish patients treated with tocilizumab. The medical charts of SARS-CoV-2-positive patients treated in the Department of Infectious Diseases between 4 March and 2 September 2020 were retrospectively analyzed. The patients who received tocilizumab according to the Polish Association of Epidemiologists and Infectiologists guidelines were selected for the study. We identified 29 individuals who received tocilizumab, out of whom 11 (37.9%) died. The individuals who died had significantly higher maximal interleukin-6 (IL-6) and lactate dehydrogenase (LDH) serum levels than survivors. After administration of tocilizumab, further increase in LDH and IL-6 was a prognostic factor for unfavorable outcomes. Among inflammatory markers, 7-day mean of IL-6 serum concentration was the best predictor of death (cut-off: >= 417 pg/mL; area under ROC curve = 0.81 [95% Confidence Interval: 0.63-0.98]). The serum concentrations of inflammatory markers before administration of tocilizumab did not predict the outcome, whereas IL-6 and LDH measurements after administration of tocilizumab seemed to be of predictive value.
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