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Novel Therapies for Resistant FSGS (FONT II): Phase II Clinical Trial

Information source: New York University School of Medicine
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Focal Segmental Glomerulosclerosis

Intervention: Adalimumab (Drug); Lisinopril, losartan, and atorvastatin (Drug); galactose (Drug)

Phase: Phase 2

Status: Completed

Sponsored by: New York University School of Medicine

Official(s) and/or principal investigator(s):
Howard Trachtman, MD, Principal Investigator, Affiliation: NYU Langone Medical Center
Debbie Gipson, MD, Principal Investigator, Affiliation: University of Michigan
Jennifer Gassman, PhD, Principal Investigator, Affiliation: The Cleveland Clinic

Summary

This project will test whether adalimumab,and/or galactose can safely reduce proteinuria (abnormal amounts of protein in the urine) and protect kidney function better than standard treatment for patients with focal segmental glomerulosclerosis (FSGS).

Clinical Details

Official title: Novel Therapies for Resistant FSGS

Study design: Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome:

A reduction in proteinuria at 6 months by > 50% of the value at the time of screening, AND

An estimated GFR (GFRe) that is stable compared to value at enrollment

Secondary outcome:

Adverse effect profile

Patient satisfaction score using the TSQM questionnaire (76)

Percent change in proteinuria (evaluated as a continuous variable)

Change in or time to doubling of GFRe

Detailed description: SPECIFIC AIMS A significant percentage of patients with primary FSGS are resistant to corticosteroids and other immunosuppressive medications. In view of the rising incidence of this disease and the grim prognosis for patients with resistant disease, it is imperative that new therapeutic approaches be evaluated in an efficient and systematic manner. This will enable accurate assessment of the risk-benefit ratio of novel therapies and guide the design of future Phase III randomized clinical trials.

Specific Aim #1: To evaluate two novel therapies for resistant FSGS - - anti-TNF-α antibody

and galactose - - against standard therapy

Specific Aim #2: To identify one or more novel agents as candidates for future study in a Phase III randomized clinical trial OVERALL STUDY DESIGN Screening/Run-In: There is no formal run-in period in the phase II trial because patients with resistant FSGS who will be eligible for this study often have unstable kidney function and are prone to sudden decline in GFR. An effort will be made to achieve randomization within 2 weeks of the screening visit. In order to achieve a comparable baseline assessment prior to initiation of one of the novel therapies, the patients must be off all immunosuppressive medications for 30 days. In addition, patients will be placed on the maximal tolerated doses of an ACEI, an ARB, and a lipid-lowering drug defined above based upon measurements of blood pressure, serum K+, creatinine, and cholesterol concentrations. Patients will have to be on stable doses of the ACEI/ARB treatment for a minimum of 2 weeks prior to randomization into the FONT Phase II study to insure that the initiation of novel therapy does not coincide with a hemodynamically induced change in proteinuria. In order to implement this part of conservative medical therapy, a 2-12 week Screening/Run-In period will precede randomization. Rescreening will be necessary if patients are not randomized to one of the three treatment arms within 12 weeks of the initial screening assessment. Duration of novel therapy: Novel therapies will be administered for 6 months before assessing efficacy, i. e., >50% reduction in proteinuria. Although the novel therapies target renal fibrosis, it is anticipated that this period of treatment will be sufficient to document a beneficial effect on proteinuria. Screening/Run-In: There is no formal run-in period in the phase II trial because patients with resistant FSGS who will be eligible for this study often have unstable kidney function and are prone to sudden decline in GFR. An effort will be made to achieve randomization within 2 weeks of the screening visit. In order to achieve a comparable baseline assessment prior to initiation of one of the novel therapies, the patients must be off all immunosuppressive medications for 30 days. In addition, patients will be placed on the maximal tolerated doses of an ACEI, an ARB, and a lipid-lowering drug defined above based upon measurements of blood pressure, serum K+, creatinine, and cholesterol concentrations. Patients will have to be on stable doses of the ACEI/ARB treatment for a minimum of 2 weeks prior to randomization into the FONT Phase II study to insure that the initiation of novel therapy does not coincide with a hemodynamically induced change in proteinuria. In order to implement this part of conservative medical therapy, a 2-12 week Screening/Run-In period will precede randomization. Rescreening will be necessary if patients are not randomized to one of the three treatment arms within 12 weeks of the initial screening assessment. Duration of novel therapy: Novel therapies will be administered for 6 months before assessing efficacy, i. e., >50% reduction in proteinuria. Although the novel therapies target renal fibrosis, it is anticipated that this period of treatment will be sufficient to document a beneficial effect on proteinuria. Frequency of visits: Patients will be evaluated after 0, 2, 8, 16, and 26 weeks of treatment with the novel therapy or conservative medical therapy alone. Thus, there will be a total of 6 visits during the treatment period. A follow-up evaluation will be performed at 1 month, 3 months, and 6 months after discontinuation of the novel therapy, and then every 6 months until the end of the funding period. Baseline studies 1. Interval History and physical examination 2. Urine protein and creatinine excretion Proteinuria (Up/c) will be expressed as the protein: creatinine ratio (mg: mg) in an early morning specimen. 3. Serum creatinine and calculated GFR, glucose, albumin, pregnancy test 4. A urine, plasma, serum and DNA sample will be collected for storage in the NIDDK FSGS-CT Biorepository. A request will be made to store any residual renal tissue collected for clinical indications during the FONT trial in the NIDDK Biorepository. Follow-up assessment: Week 2, 8, and 16 Visits 1. Interval history, physical examination, assessment of adverse events 2. First morning urine protein excretion 3. Laboratory analysis as charted below. Urine pregnancy test at 8 and 16 week visit Final Outcome Visit (Week 26) 1. History and physical examination 2. Morning urine protein and creatinine excretion x 2 (The value will represent the average of two samples collected during the week before the visit.) 3. Serum creatinine and calculated GFR, Serum Na+, K+, HCO3, Cl-, glucose, CPK 4. BUN, albumin, cholesterol, AST, ALT, alkaline phosphatase, CBC, ANA, C3 levels, pregnancy test 5. Urine, serum and plasma for biorepository 6. TSQM patient questionnaire Preliminary safety, patient tolerance, and PK data for the two novel therapies, rosiglitazone and adalimumab, that will be used in the Phase II trial were generated through the successful performance of a Phase I study. In the phase I study, a total of 21 patients were enrolled. 11 were assigned to receive rosiglitazone, and 10 were assigned to receive adalimumab. The patients were evenly divided by gender and pubertal stage. All patients had a GFR >50 mL/min/1. 73 m2. There were no serious adverse events necessitating the withdrawal of study drug. Rosiglitazone was stopped in one child due to a questionable allergy. The patients tolerated the experimental medications adequately based on the results of the Treatment Satisfaction Questionnaire for Medication (TSQM) which was administered at week 16. The PK analyses indicated that the rosiglitazone dose needs to be increased to account for increased clearance and reduced area under the curve in patients with resistant FSGS and nephrotic range proteinuria. For adalumimab, clearance was also enhanced especially after receiving multiple doses. However, these results of the adalimumab PK analyses indicate that no dose adjustment was required. The PK data for each drug were presented in abstract form at the annual meeting of the American Society of Nephrology and a manuscript summarizing the complete findings in patients treated with rosiglitazone has been submitted for publication. This Phase II will again rely on the considerable investment of time and resources on the part of the study investigators and the NIH/NIDDK gained through the FSGS-CT (UO1-DK-63455) and the Phase I portion of the FONT study (DK70341). Schneider Children's Hospital (SCH) and University of North Carolina-Chapel Hill (UNC) resources including the GCRCs that were utilized in the R21phase of them study will be available for the R33 portion of the FONT project. Preliminary safety, patient tolerance, and PK data for the two novel therapies, rosiglitazone and adalimumab, that will be used in the Phase II trial were generated through the successful performance of a Phase I study. In the phase I study, a total of 21 patients were enrolled. 11 were assigned to receive rosiglitazone, and 10 were assigned to receive adalimumab. The patients were evenly divided by gender and pubertal stage. All patients had a GFR >50 mL/min/1. 73 m2. There were no serious adverse events necessitating the withdrawal of study drug. Rosiglitazone was stopped in one child due to a questionable allergy. The patients tolerated the experimental medications adequately based on the results of the Treatment Satisfaction Questionnaire for Medication (TSQM) which was administered at week 16. The PK analyses indicated that the rosiglitazone dose needs to be increased to account for increased clearance and reduced area under the curve in patients with resistant FSGS and nephrotic range proteinuria. For adalumimab, clearance was also enhanced especially after receiving multiple doses. However, these results of the adalimumab PK analyses indicate that no dose adjustment was required. The PK data for each drug were presented in abstract form at the annual meeting of the American Society of Nephrology and a manuscript summarizing the complete findings in patients treated with rosiglitazone has been submitted for publication. This Phase II will again rely on the considerable investment of time and resources on the part of the study investigators and the NIH/NIDDK gained through the FSGS-CT (UO1-DK-63455) and the Phase I portion of the FONT study (DK70341). Schneider Children's Hospital (SCH) and University of North Carolina-Chapel Hill (UNC) resources including the GCRCs that were utilized in the R21phase of them study will be available for the R33 portion of the FONT project.

Eligibility

Minimum age: 1 Year. Maximum age: 65 Years. Gender(s): Both.

Criteria:

Inclusion Criteria:

- Primary FSGS confirmed by renal biopsy OR documentation of a genetic mutation in a

podocyte protein associated with the disease

- Failure to respond to prior therapy at least one of the following immunosuppressive

medications - - cyclosporine, tacrolimus, mycophenolate mofetil, sirolimus - or other

agents prescribed to lower proteinuria

- Age 1-65 years at onset of proteinuria

- Age 1-65 years at time of randomization

- Estimated GFR ≥40 mL/min/1. 73 m2 using Schwartz (age <18 yr) or Cockroft-Gault (age

<18 yr) formula at screening and ≥30 mL/min/1. 73 m2 at the end of the Run-In Period and at the time of randomization

- Up/c > 1. 0 g/g creatinine on first morning void

- Steroid resistance defined as failure to achieve sustained Up/c < 1. 0 following a

standard course of prednisone/prednisolone/methylprednisolone prescribed for FSGS therapy, OR contraindication/anticipated intolerance to steroid therapy defined as severe obesity, documented decreased bone density, family history of diabetes, or a psychiatric disorder.

- Willingness to follow the protocol, including medications, baseline and follow-up

visits, and procedures. Exclusion Criteria:

- Lactation, pregnancy, or refusal of birth control in women of child bearing potential

- Participation in another therapeutic trial involving protocol mandated administration

of a immunosuppressive medication concurrently or 30 days prior to randomization

- Active/serious infection (including, but not limited to Hepatitis B or C, HIV)

- History of malignancy

- Abnormality in age appropriate cancer screening in accord with ACS 2003 guidelines

(appendix 17. 6)

- Patients with uncontrolled blood pressure > 140/90 or > 95th percentile for

age/height at the end of the run in period

- Diabetes mellitus Type I or II

- Organ transplantation

- Congestive heart failure

- History of prior myocardial infarction

- SLE or multiple sclerosis

- Hepatic disease, defined as serum ALT/AST levels more than 2. 5x the upper limit of

normal

- Hematocrit <27%

- Immunosuppressive therapy with cyclosporine, tacrolimus, mycophenolate mofetil,

azathioprine, or rapamycin in the 30 days prior or Rituximab in the 90 days prior to randomization

- Prior treatment with the study medications, rosiglitazone or adalimumab

- Allergy to one of the study medications, i. e., rosiglitazone, adalimumab, lisinopril,

losartan or atorvastatin

Locations and Contacts

University of Alberta, Edmonton, Alberta T6G 2R7, Canada

University of Miami, Miami, Florida 33136, United States

Emory University, Atlanta, Georgia 30322, United States

University of Kansas, Kansas City, Kansas 66160, United States

Boston Children's Hospital, Boston, Massachusetts 02115, United States

University of Michigan, Ann Arbor, Michigan 48109, United States

Mayo Clinic, Rochester, Minnesota 55901, United States

Children's Mercy Hospital, Kansas City, Missouri 64108, United States

Cardinal Glennon Children's Medical Center, Saint Louis, Missouri 63104, United States

Steven and Alexandra Cohen Children's Medical Center of New York, New Hyde Park, New York 11040, United States

Columbia University Medical Center, New York, New York 10032, United States

NYU Langone Medical Center, New York, New York 10016, United States

Carolinas Medical Center, Charlotte, North Carolina 28207, United States

Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, United States

Ohio State University, Columbus, Ohio 43205, United States

Doernbecher Children's Hospital, Portland, Oregon 97239, United States

Medical University of South Carolina, Charleston, South Carolina 29425, United States

Texas Tech University, El Paso, Texas 79905, United States

Additional Information

Starting date: December 2008
Last updated: April 10, 2014

Page last updated: August 23, 2015

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