TNFRSF9, SOD2, PIgR, cartilage oligomeric matrix protein, SERPINA12, fatty acid binding protein 2, neural cell adhesion molecule L1 like (CHL1), and NT‐3 were found to be associated with IL‐38, yet have not been described before in the context of COVID‐19 or IL‐38 biology. Here, TNFRSF9 is linked to COVID-19.