ABCB7 and diabetes mellitus: In multivariate analysis, age ≥65 years (aOR 5,04; 95% CI: 1.51-16.78), diabetes mellitus (aOR 3,15; 95% CI : 1.14-8.72), ASAT >40 UI/L (aOR 7,08; 95% CI: 2.40-20.87), ferritin >300 ng/mL (aOR13,47; 95% CI: 1.56-26.25) were the independent factors associated with proteinuria in COVID-19 patients (Table 3).