A Study to Evaluate PF-06730512 in Adults With Focal Segmental Glomerulosclerosis (FSGS)

Open to people ages 18 years and up

1. Adults age 18 years and older who have a confirmed biopsy diagnosis of FSGS.
2. Estimated glomerular filtration rate (eGFR) greater than or equal to 45 ml/min/1.73 m2. If eGFR is 30 - 45 ml/min/1.73 m2, a recent biopsy (within 12 months prior to Screening) must demonstrate < 50% tubulointerstitial fibrosis.
3. Urine protein:creatinine ratio (UPCR) greater than 1.5 g/g at screening.
4. Treated with at least one but not more than 3 classes of immunosuppressants either alone or in combination, or has a contraindication to use of an immunosuppressant or is intolerant to an immunosuppressant per investigator judgment.

1. Diagnosis of collapsing FSGS.
2. Advanced chronic changes on renal biopsy as evidenced by greater than 50% tubulointerstitial fibrosis.
3. Organ transplant.
4. History of malignancy, with the exception of basal or squamous cell carcinoma that has been treated and fully resolved for a minimum of 5 years.
5. Body mass index (BMI) greater than 45 kg/m2.
6. Subjects with a history of prior treatment with or use of interferon, lithium, pamidronate, mTOR inhibitors (eg, sirolimus), testosterone/anabolic steroids, anthracycline (eg, doxorubicin), heroin.