Wed Dec 08 2021

NEW ARTICLE

suPAR independently predicts severity and length of hospitalisation in patients with COVID-19

Efficient healthcare based on prognostic variables in hospitalised patients with COVID-19 could reduce the risk of complications and death. Recently, suPAR was shown to predict respiratory failure, kidney injury, and clinical outcome in patients with SARS-CoV-2 infection.

Results

Patients had significantly higher suPAR levels compared to controls (P < 0.001). Levels were higher in severely/critically (median 6.6 ng/mL) compared with moderately ill patients (median 5.0 ng/mL; P = 0.002). In addition, suPAR levels correlated with length of hospitalisation (rho = 0.35; P = 0.006). Besides suPAR, LDH, CRP, neutrophil count, neutrophil-to-monocyte and neutrophil-to-lymphocyte ratio, body mass index, and chronic renal failure were discriminators of COVID-19 severity and/or predictors of length of hospitalisation.

Conclusion

Admission levels of suPAR were higher in patients who developed severe/critical COVID-19 and associated with length of hospital stay. In addition, we showed that suPAR functioned as an independent predictor of COVID-19 disease severity.

Background

Efficient healthcare based on prognostic variables in hospitalised patients with COVID-19 could reduce the risk of complications and death. Recently, soluble urokinase Plasminogen Activator Receptor (suPAR) was shown to predict respiratory failure, kidney injury, and clinical outcome in patients with SARS-CoV-2 infection. The aim of this study was to investigate the value of suPAR as a prognostic tool, in comparison with other variables, regarding disease severity and length of hospital stay in patients with COVID-19.

Patients and Methods

Individuals hospitalised with COVID-19 (40 males, 20 females; median age 57.5 years) with a median symptom duration of 10 days and matched, healthy controls (n = 30) were included. Admission levels of suPAR were measured in serum by enzyme-linked immunosorbent assay. Blood cell counts, C-reactive protein (CRP) levels, lactate dehydrogenase (LDH), plasma creatinine, and estimated glomerular filtration rates were analysed and oxygen demand, level of care, and length of hospitalisation were recorded.

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suPAR is used in clinical routine in 38 hospitals

38 hospitals use suPAR in clinical routine for triage of patients in the Emergency Departments and COVID-19 units. Clinical routine is defined by the placement of two Purchasing Orders within the last 12 months rolling. This period covers October 1, 2021, until September 30, 2022.
Some hospital locations cannot be disclosed due to confidentiality.

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