MAGI2 mRNA levels were positively correlated with eGFR in isolated glomeruli of FSGS patients (Hodgin FSGS Glom dataset, Fig. 14B), in kidney biopsies of patients after kidney transplantation (Saint-Mezard Transplant Kidney, Fig. 14C), and in glomeruli isolated from diabetic kidney disease patients (Fig. 14D). This evidence concerns the gene MAGI2 and focal segmental glomerulosclerosis.