Trial record 2 of 2 for:    "Nephrosclerosis"

Aldosterone Breakthrough During Diovan, Tekturna, and Combination Therapy in Patients With Proteinuric Kidney Disease

This study has been completed.
Sponsor:
Collaborator:
Novartis Pharmaceuticals
Information provided by (Responsible Party):
Pietro Canetta, MD, Columbia University
ClinicalTrials.gov Identifier:
NCT01129557
First received: May 21, 2010
Last updated: July 31, 2013
Last verified: July 2013
  Purpose

Primary Hypothesis: Aldosterone breakthrough will occur at a far lower frequency during renin inhibition (0-10% over 9 months), alone or in combination with an ARB, compared to conventional ARB therapy (35-45% over 9 months). The investigators hypothesize that aldosterone breakthrough occurs due to accumulation of active precursor substances, most notably angiotensin II, produced in response to conventional RAAS blockade with ACEinhibitors and ARBs. The investigators believe that direct renin inhibition (DRI) should minimize this accumulation and therefore significantly lower or possibly eliminate the breakthrough effect.

Interruption of the renin-angiotensin-aldosterone system (RAAS) with angiotensin-converting enzyme inhibitors (ACE-Is) and angiotensin receptor blockers (ARBs), alone and in combination, has become a leading therapy to slow the progression of chronic heart and kidney disease. Both types of drugs inhibit the formation of aldosterone, a hormone, which has been shown to have harmful effects on patients with chronic heart and kidney disorders. This treatment is effective but not perfect since, even after an initial improvement, many patients become worse over the long term. This may be due to an unexpected increase in aldosterone, a phenomenon called "aldosterone breakthrough."

The purpose of this study is to find out whether the use of a direct renin inhibitor (DRI) alone, or in combination with an angiotensin receptor blocker (ARB), will lessen the occurrence of aldosterone breakthrough since direct renin inhibitors inhibit the formation of aldosterone at a very early step. This study will compare the effectiveness of adding Diovan (valsartan) or Tekturna (aliskiren) or a combination of Diovan and Tekturna to the usual antihypertensive treatment. The investigators will follow blood pressure, aldosterone levels, and urinary protein levels over 9 months to evaluate which of these therapies is most effective for treating hypertension in patients with proteinuric kidney disease.


Condition Intervention Phase
Proteinuric Kidney Disease
Diabetic Nephropathy
Hypertensive Nephrosclerosis
IgA Nephropathy
Focal Segmental Glomerulosclerosis
Glomerulopathy (Obesity-associated)
Glomerulonephritis, Membranous
Drug: aliskiren [direct renin inhibitor (DRI)]
Drug: valsartan [angiotensin receptor blocker (ARB)]
Drug: aliskiren + valsartan (DRI + ARB)
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Aldosterone Breakthrough During Diovan (Valsartan), Tekturna (Aliskiren), and Combination (Valsartan+Aliskiren) Anti-hypertensive Therapy in Patients With Proteinuric Kidney Disease

Resource links provided by NLM:


Further study details as provided by Columbia University:

Primary Outcome Measures:
  • Cumulative incidence of aldosterone breakthrough [ Time Frame: 9 months ] [ Designated as safety issue: No ]
    The primary outcome of this study is the 9-month cumulative incidence of aldosterone breakthrough, defined as a sustained increase in 24-hour urine aldosterone above baseline, in each treatment arm.


Secondary Outcome Measures:
  • Mean change in urine aldosterone and plasma aldosterone [ Time Frame: 3-, 6-, and 9-months ] [ Designated as safety issue: No ]
    Secondary outcome #1: Mean change in urine aldosterone and plasma aldosterone at 3-, 6-, and 9-months of each treatment arm

  • Mean change in 24-hour proteinuria [ Time Frame: at 3-, 6-, and 9-months ] [ Designated as safety issue: No ]
    Secondary outcome #2: Mean change in 24-hour proteinuria at 3-, 6-, and 9-months of each treatment arm

  • Less than 10% decline in proteinuria [ Time Frame: 9 months ] [ Designated as safety issue: No ]
    Secondary outcome #3: Number and percentage of patients, in each treatment arm, with <10% decline in proteinuria over study period

  • Greater than 50% decline in proteinuria [ Time Frame: 9 months ] [ Designated as safety issue: No ]
    Secondary outcome #4: Number and percentage of patients, in each treatment arm, with >50% decline in proteinuria over study period

  • Change in office blood pressure measurement [ Time Frame: at 3-, 6-, and 9-months ] [ Designated as safety issue: No ]
    Secondary outcome #5: Mean change at 3-, 6-, and 9-months of each treatment arm in office blood pressure measurement


Enrollment: 46
Study Start Date: September 2009
Study Completion Date: December 2012
Primary Completion Date: January 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Tekturna Drug: aliskiren [direct renin inhibitor (DRI)]
Tekturna 300 mg PO once daily for 9 months
Other Names:
  • Tekturna 150 mg PO QD + Diovan 160 mg PO QD for 9 months.
  • Diovan 320 mg PO QD for 9 months.
Active Comparator: Diovan Drug: valsartan [angiotensin receptor blocker (ARB)]
Diovan 320 mg PO once daily for 9 months
Other Names:
  • Tekturna 300 mg PO QD for 9 months
  • Tekturna 150 mg PO QD + Diovan 160 mg PO QD for 9 months.
Active Comparator: Tekturna + Diovan Drug: aliskiren + valsartan (DRI + ARB)
Tekturna 150 mg PO once daily + Diovan 160 mg PO once daily for 9 months
Other Names:
  • Tekturna 300 mg PO QD for 9 months
  • Diovan (valsartan) 320 mg PO once daily for 9 months.

Detailed Description:

This is a randomized, open-label, three-arm study comparing Diovan (valsartan, an ARB), Tekturna (aliskiren, a DRI), and the combination of valsartan + aliskiren (i.e. ARB + DRI). One hundred twenty subjects (40 per arm) will be treated with Tekturna, Diovan, or a combination of both drugs for 9 months on top of their usual antihypertensive treatment. Changes in urinary aldosterone excretion will be monitored during therapy to measure the incidence of aldosterone breakthrough, defined as any sustained positive change from baseline urinary aldosterone excretion by the completion of the 9-month study period. This frequency measure will be compared during ARB, DRI, and ARB + DRI therapy. Changes in urinary protein excretion will also be monitored alongside the urinary aldosterone levels to determine whether aldosterone breakthrough is associated with refractory proteinuria. This is an innovative study that will be the first to (1) examine aldosterone breakthrough during DRI therapy, and (2) explore whether addition of a DRI to an ARB protects against aldosterone breakthrough. In addition, this will be the first study to examine whether DRI therapy (alone or in combination with ARB) is effective therapy for hypertension in patients with non-diabetic proteinuric kidney disease.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Proteinuria > 300 mg/day
  • Normal to mildly reduced kidney function (eGFR > 45 ml/min/1.73m2)
  • Systolic blood pressure >130 mm Hg
  • Diastolic blood pressure >70 mm Hg
  • Diagnoses of diabetic nephropathy, hypertensive nephrosclerosis, IgA nephropathy, focal segmental glomerulosclerosis, membranoproliferative glomerulonephritis, membranous nephropathy, fibrillary glomerulonephritis, or obesity-associated glomerulopathy

Exclusion Criteria:

  • Concomitant use of cyclosporine (which can interact with aliskiren)
  • Inability to undergo 6 week washout period if already on RAAS-blocking drug(s) (includes renin inhibitor, ACE-inhibitor, ARB, and mineralocorticoid receptor blocker)
  • eGFR < 45 ml/min/1.73m2
  • Urine protein excretion < 300 mg/day
  • Serum K > 5.0 mEq/l
  • Systolic blood pressure > 170 mm Hg or < 130 mm Hg after washout period
  • Diastolic blood pressure > 110 mm Hg or < 70 mm Hg after washout period
  • Congestive heart failure NYHA class III and IV
  • History of any cardiovascular events (stroke, TIA, MI, unstable angina, CABG, PCI, CHF hospitalization) in 3 months prior to study visit 1
  • 2nd or 3rd degree heart block without a pacemaker or other uncontrolled arrhythmia
  • Clinically significant valvular disease
  • Known renal artery stenosis
  • Any surgical or medical condition that might significantly alter the pharmacokinetics of the study drugs (n.b. bariatric surgery > 6 months prior to visit 1 is not an exclusion)
  • History or evidence of drug or alcohol abuse within the last 12 months
  • Any concurrent life threatening condition with a life expectancy less than 2 years
  • Pregnant or nursing (lactating) women
  • Women of child-bearing potential unless postmenopausal for at least 1 year, surgically sterile, or using effective methods of contraception as defined by local health authorities
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01129557

Locations
United States, New York
Columbia University Medical Center
New York, New York, United States, 10032
Sponsors and Collaborators
Columbia University
Novartis Pharmaceuticals
Investigators
Principal Investigator: Pietro Canetta, MD Columbia University
  More Information

Publications:
Responsible Party: Pietro Canetta, MD, Instructor in Clinical Medicine, Nephrology, Columbia University
ClinicalTrials.gov Identifier: NCT01129557     History of Changes
Other Study ID Numbers: AAAE0863, #IIRP-906
Study First Received: May 21, 2010
Last Updated: July 31, 2013
Health Authority: United States: Institutional Review Board

Additional relevant MeSH terms:
Nephrosclerosis
Diabetic Nephropathies
Glomerulonephritis
Glomerulonephritis, IGA
Glomerulonephritis, Membranous
Glomerulosclerosis, Focal Segmental
Kidney Diseases
Obesity
Urologic Diseases
Diabetes Complications
Diabetes Mellitus
Endocrine System Diseases
Nephritis
Autoimmune Diseases
Immune System Diseases
Overnutrition
Nutrition Disorders
Overweight
Body Weight
Signs and Symptoms
Valsartan
Antihypertensive Agents
Angiotensin Receptor Antagonists
Cardiovascular Agents
Therapeutic Uses
Pharmacologic Actions
Angiotensin II Type 1 Receptor Blockers
Molecular Mechanisms of Pharmacological Action

ClinicalTrials.gov processed this record on April 17, 2014