KIM-1 and NAG were significantly correlated with level of proteinuria in the COVID-19 cohort (KIM-1: ρ = 0.54, NAG: ρ = 0.68, each p < 0.001) and in the control cohort (KIM-1: ρ = 0.61, p < 0.001, NAG: ρ = 0.59, p < 0.05). Here, HAVCR1 is linked to COVID-19.