Predictors of Disease Progression in Primary Focal Segmental Glomerulosclerosis

Inclusion Criteria: * Patients with biopsy-proven primary focal segmental glomerulosclerosis. * Patients who have a renal biopsy available for reviewing including 8 or more glomeruli. * Patients who have been followed-up for at least 6 months or have progressed to primary outcome regardless the duration of follow-up. Exclusion Criteria: * Patients who have secondary focal segmental glomerulosclerosis attributable to any other condition (e.g., obesity, HIV, relevant drug exposure). * Patients who have a genetic mutation or variation creating a tendency for developing focal segmental glomerulosclerosis. * Patients who are unwilling or unable to consent.