A 61-year-old Japanese man with nephrotic syndrome due to focal segmental glomerulosclerosis was initially responding well to steroid therapy .
O O O B-OrganismTaxon O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O O O O O B-ChemicalEntity O O