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Sci Rep . Serum IL-28A/IFN-λ2 is linked to disease severity of COVID-19

tetano

Editor, Senior Moderator
Sci Rep


. 2022 Mar 31;12(1):5458.
doi: 10.1038/s41598-022-09544-8.
Serum IL-28A/IFN-λ2 is linked to disease severity of COVID-19


Yosuke Fukuda[SUP] 1 [/SUP], Tetsuya Homma[SUP] 2 [/SUP], Hideki Inoue[SUP] 1 [/SUP], Yuiko Goto[SUP] 1 [/SUP], Yoko Sato[SUP] 1 [/SUP], Hitoshi Ikeda[SUP] 1 [/SUP], Chisato Onitsuka[SUP] 1 [/SUP], Hiroki Sato[SUP] 1 [/SUP], Kaho Akimoto[SUP] 1 [/SUP], Takaya Ebato[SUP] 1 [/SUP], Hiromitsu Suganuma[SUP] 1 [/SUP], Tomoko Kawahara[SUP] 1 [/SUP], Hatsuko Mikuni[SUP] 1 [/SUP], Yoshitaka Uchida[SUP] 1 [/SUP], Shintaro Suzuki[SUP] 1 [/SUP], Akihiko Tanaka[SUP] 1 [/SUP], Hironori Sagara[SUP] 1 [/SUP]



Affiliations

Abstract

Type III interferons (IFNs) play an important role in respiratory viral infections, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. This study aimed to determine whether the expression of serum type III IFNs predicted disease severity among patients with the coronavirus disease (COVID-19). A retrospective cohort study was conducted of patients admitted to a single hospital between March 21, 2020, and March 31, 2021. Patients were divided into mild to moderate I (MM) and moderate II to severe (MS) groups based on the COVID-19 severity classification developed by the Japanese Ministry of Health, Labor and Welfare. A total of 257 patients were included in the analysis. Human interleukin-28A (IL-28A/IFN-λ2) expression was significantly lower, and interleukin (IL)-6 expression was significantly higher in the MS group than in the MM group (both p < 0.001). In addition, IL-28A/IFN-λ2 was statistically significantly inversely correlated with the time from disease onset to negative SARS-CoV-2 PCR results (p = 0.049). Multivariable logistic regression analysis showed that IL-28A/IFN-λ2 was an independent predictor of disease severity (p = 0.021). The low expression of IL-28A/IFN-λ2 may serve as a serum biomarker that predicts the severity of COVID-19, possibly through the mechanism of delayed viral elimination.
 
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