ALB and obesity due to melanocortin 4 receptor deficiency: After intravitreal ranibizumab injection, existing proteinuria raised to a nephrotic level in multiple occurrences. Renal biopsy performed when proteinuria was 14 g/day and serum albumin 2.9 g/dL. It showed DN and acute TIN (eosinophil dominant inflammation and tubulitis). The patient has Class 3 obesity, as well