Inclusion Criteria:  Male or female participants aged 18 and older. Diagnosis of a primary glomerular disease confirmed from a past renal biopsy. Participants with genetic forms of FSGS may be enrolled without a renal biopsy if the clinical picture is consistent with the genetic testing results. Estimated glomerular filtration rate (eGFR) by Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) ≥ 40 mL/min/1.73m2. Urinary protein excretion ≥ 1 g/day on a 24-hour urine collection. All participants must be on the SOC therapy, including the maximally tolerated/recommended doses of an ACEi or ARB, but not both.  Exclusion Criteria:  Positive Hepatitis B (HBV), Hepatitis C (HCV), or human immunodeficiency virus (HIV) viral screening; historical or during screening. Aspartate Aminotransferase (AST) or alanine Aminotransferase (ALT) or total bilirubin > 2 x ULN. Hemoglobin A1C > 8.5%. Known predisposition to bleeding and/or thrombosis Type I diabetes mellitus. Renal disease secondary to systemic disease including but not limited to: systemic lupus erythematosus, anti-neutrophil cytoplasmic antibodies -associated diseases, anti-glomerular basement disease, secondary forms of focal segmental glomerulosclerosis, renal diseases associated with para-proteinemias, C3 glomerulopathy, and diabetic kidney disease.