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Pilot Assessment of the Effects of Bardoxolone Methyl on Renal Perfusion, Systemic Haemodynamics and Cardiac Function in Patients With Chronic Kidney Disease and Type 2 Diabetes

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01551446
Recruitment Status : Withdrawn (IDMC recommendation for safety concerns)
First Posted : March 12, 2012
Last Update Posted : November 2, 2012
Information provided by (Responsible Party):
Reata Pharmaceuticals, Inc.

Brief Summary:
This study is to evaluate the variability of several pharmacodynamic measures of kidney function, cardiovascular function, cerebral perfusion, and haemodynamics.

Condition or disease Intervention/treatment Phase
Renal Insufficiency, Chronic Diabetes Mellitus, Type 2 Drug: Bardoxolone Methyl Phase 1

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 0 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Pilot Assessment of the Effects of Bardoxolone Methyl on Renal Perfusion, Systemic Haemodynamics and Cardiac Function in Patients With Chronic Kidney Disease and Type 2 Diabetes
Study Start Date : April 2012
Estimated Primary Completion Date : November 2012
Estimated Study Completion Date : October 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Kidney Diseases

Arm Intervention/treatment
Experimental: Bardoxolone Methyl 20mg Drug: Bardoxolone Methyl
Oral, once daily

Primary Outcome Measures :
  1. Change in renal perfusion [ Time Frame: 20 weeks ]
    The change in renal perfusion measured by ASL-MRI Scanning

Secondary Outcome Measures :
  1. Change in cardiac function [ Time Frame: 20 weeks ]
    The change in cardiac function measured by cardiac MRI scanning

  2. Change in cerebral perfusion [ Time Frame: 20 weeks ]
    The change in cerebral perfusion measured by cerebral ASL MRI

  3. Change in haemodynamic variables [ Time Frame: 20 weeks ]
    The change in the following haemodynamic variables: non-invasive measurement of cardiac output, heart rate, blood pressure and baroreflex sensitivity

  4. Change in arterial stiffness [ Time Frame: 20 weeks ]
    The change in arterial stiffness measured using cartoi-femoral Pulsewave Velocity Assessment and Augmentation Index

  5. Change in body composition [ Time Frame: 20 weeks ]
    The change in body composition measured using Bioelectrical Impedance Analysis

  6. Number of participants with adverse events and serious adverse events [ Time Frame: 20 weeks ]
  7. Plasma concentration of bardoxolone methyl [ Time Frame: 20 weeks ]
  8. Change in cerebral white matter microstructure [ Time Frame: 20 weeks ]
  9. Change in total body water [ Time Frame: 20 weeks ]
    The change in total body water measured using Bioelectrical Impedance Analysis

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Screening eGFR ≥15.0 and ≤60.0 mL/min/1.73 m2;
  2. A history of type 2 diabetes; diagnosis should have been made at ≥ 30 years of age (if diabetes developed at a younger age, a fasting C-peptide level must be ≥ 0.1 ng/mL to confirm type 2 diabetes);
  3. Male or female patients at least 18 years of age;
  4. Treatment with an angiotensin converting enzyme (ACE) inhibitor and/or an angiotensin II receptor blocker (ARB) for at least 6 weeks prior to Study Day 1. The dosage of ACE inhibitor and/or ARB must be stable for 2 weeks prior to and/or during screening (i.e., no change in dosage or medication). Patients not taking an ACE inhibitor and/or ARB, or taking an ACE inhibitor and/or ARB at levels below the goal dose set by K/DOQI guidelines must have a documented medical contraindication (e.g., hyperkalemia, hypotension), which the investigator must provide and discuss with a medical monitor prior to Study Day 1. Patients not taking an ACE inhibitor and/or ARB because of a medical contraindication must have discontinued treatment at least 8 weeks prior to Study Day 1;
  5. Mean systolic blood pressure (SBP) ≤160 mmHg and ≥105 mmHg and mean diastolic blood pressure (DBP) ≤90 mmHg during screening; both mean SBP and mean DBP (determined as the average of three readings) must be within the described range during the screening period;
  6. Willing to practice methods of birth control (both males who have partners of childbearing potential and females of childbearing potential) during screening, while taking study drug and for at least 30 days after the last dose of study drug is ingested;
  7. Serum magnesium level must be ≥1.3 mEq/L (0.65 mmol/L) during the screening period;
  8. Willing and able to cooperate with all aspects of the protocol;
  9. Willing to and able to give written informed consent for study participation.

Exclusion Criteria:

  1. Type 1 diabetes mellitus (juvenile onset). If a history of diabetic ketoacidosis exists, a fasting C-peptide level must confirm type 2 diabetes;
  2. Known non-diabetic renal disease (e.g., known polycystic kidney disease, family history of a hereditary form of kidney disease, or congenital absence of one kidney) [nephrosclerosis superimposed on diabetic kidney disease is acceptable];
  3. Ongoing clinical investigation with evidence (e.g., unexplained hematuria or red blood cell or white blood cell casts) suggesting non-diabetic renal disease other than nephrosclerosis;
  4. History of a renal donation, transplant or a planned transplant from a living donor during the study;
  5. Albumin/creatinine (ACR) during screening period greater than 3500 mg/g (395.5 mg/mmol);
  6. Hemoglobin A1c level >11.0% (97 mmol/mol) during screening period;
  7. Acute dialysis or acute kidney injury within 12 weeks prior to screening or during screening;
  8. Clinical signs and/or symptoms of uremia and expected need for renal replacement therapy within 6 weeks following Study Day 1, as assessed by the investigator;
  9. Recently active cardiovascular disease defined as:

    • Unstable angina pectoris within 12 weeks before Study Day 1;
    • Myocardial infarction, coronary artery bypass graft surgery, or percutaneous transluminal coronary angioplasty/stent within 12 weeks before Study Day 1;
    • Cerebrovascular accident, including transient ischemic attack within 12 weeks before Study Day 1;
  10. Clinical diagnosis of severe obstructive valvular heart disease or severe obstructive hypertrophic cardiomyopathy;
  11. Atrioventricular block, 2o or 3o;
  12. Administration of a contrast agent that may induce nephropathy within 30 days prior to Study Day 1 or planned during the study;
  13. Systemic immunosuppression for more than 2 weeks, cumulatively, within the 12 weeks prior to Study Day 1 or anticipated need for immunosuppression during the study;
  14. Total bilirubin, aspartate transaminase (AST), or alanine transaminase (ALT) level greater than the upper limit of normal (ULN) or alkaline phosphatase level >2x ULN on ANY screening laboratory test result;
  15. Female patients who are pregnant, intend to become pregnant during the study, or are nursing;
  16. BMI < 18.5 kg/m2;
  17. Known hypersensitivity to any component of the study drug;
  18. Current history of drug or alcohol abuse, as assessed by the investigator;
  19. Clinically significant infection requiring intravenous administration of antibiotics or hospitalization within 6 weeks prior to or during the screening period;
  20. Hepatitis B surface antigen positive;
  21. Diagnosis or treatment of a malignancy in the past 5 years, excluding non-melanoma skin cancer and carcinoma in situ of the cervix, or a condition highly likely to transform into a malignancy during the course of the study;
  22. A clinical condition that, in the judgment of the investigator, could potentially pose a health risk to the patient while involved in the study;
  23. Participation in a clinical study involving any intervention within 30 days prior to Study Day 1, concurrent participation in such a study, or participation in a prior clinical study involving bardoxolone methyl in any form;
  24. Unable to understand verbal or written information in English;
  25. Mental incapacity to consent;
  26. Contraindications to MRI (implants, pace makers, claustrophobia).

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Responsible Party: Reata Pharmaceuticals, Inc. Identifier: NCT01551446     History of Changes
Other Study ID Numbers: 402-C-1103
First Posted: March 12, 2012    Key Record Dates
Last Update Posted: November 2, 2012
Last Verified: November 2012

Additional relevant MeSH terms:
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Kidney Diseases
Renal Insufficiency, Chronic
Renal Insufficiency
Diabetes Mellitus
Diabetes Mellitus, Type 2
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Urologic Diseases