Laboratory findings showed hypoalbuminemia (20 g/L), elevated urine albumin/creatinine ratio (668 mg/mmol), and elevated creatinine of 116 μmol/L from a baseline of 79 μmol/L.<h4>Diagnosis</h4>A diagnostic kidney biopsy was performed 6 weeks after the onset of the edema and approximately 8 weeks after his first dose of Pfizer-BioNTech COVID-19 vaccine. This evidence concerns the gene ALB and Hypoalbuminemia.