IL1F10 and COVID-19: Among subjects with detectable IL‐38 plasma concentrations, there was no difference between the COVID‐19 patients and matched healthy subjects (U = 640, ndiscovery = 46, nControl = 31, p = .452 two‐tailed; U = 2537, nvalidation = 61, ncontrol = 32, p = .755 two‐tailed) (Figure 2).