Nephrotic Syndrome Study Network Digital Pathology Scoring System (NDPSS) scoring matrices used in the original NDPSS (A), first modification (NDPSS1) (B), and second modification (NDPSS2) (C). Each descriptor was scored by using a drop-down menu that appeared when the appropriate cell was clicked. Abbreviations: GBM, glomerular basement membrane; glom, glomerulus; L#, image level number; WSI, whole slide imaging.