NCT00494715

Brief Summary

Nephropathy of type 2 diabetes is the leading cause of end stage renal disease (ESRD) world-wide and is associated with a dramatic excess cardiovascular morbidity and mortality. Two randomized trials found that angiotensin II receptor blockers (ARBs) reduce the incidence of ESRD by about 30%, but have no appreciable effects on cardiovascular mortality. Available data suggest that ACE inhibitors might be similarly renoprotective and even more cardioprotective, but large scale trials on ACE inhibitors, alone or combined with ARBs, in overt nephropathy of type 2 diabetes are missing. This study will compare the effects, at comparable blood pressure control (systolic/diastolic \<130/80 mmHg), of dual renin-angiotensin-system (RAS) blockade by half dose of benazepril and valsartan combination therapy as compared to single RAS blockade by benazepril or valsartan alone at full dose, 20 mg and 160 mg respectively, on ESRD and cardiovascular events in high-risk patients with type 2 diabetes and overt nephropathy, defined as serum creatinine \>1.8 mg/dl and \< 3.2 mg/dl and spot morning urine albumin to creatinine ratio \>1000mg/g for the patients without previous ACE inhibitor and ARB therapy and \>500mg/g for the patients with previous ACE inhibitor or ARB therapy and no specific contraindications to the study drugs. The relationships between renal and cardiovascular outcomes will also be evaluated. 102 patients will be treated for at least 3 years. At comparable blood pressure control, the study is expected to show a more effective reduction in ESRD and cardiovascular events with combined than with single drug ACE inhibitor or ARB therapy. As compared to ARB, ACE inhibitor therapy is expected to have a similar effect on ESRD, but a superior cardioprotective effect. Applied to clinical practice, the findings should help reducing renal and cardiovascular complications, and related treatment costs, of type 2 diabetes.

Trial Health

90
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
102

participants targeted

Target at below P25 for phase_3 diabetes

Timeline
Completed

Started May 2007

Longer than P75 for phase_3 diabetes

Geographic Reach
2 countries

15 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2007

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

June 29, 2007

Completed
3 days until next milestone

First Posted

Study publicly available on registry

July 2, 2007

Completed
8.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2016

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2016

Completed
Last Updated

June 1, 2016

Status Verified

May 1, 2016

Enrollment Period

8.9 years

First QC Date

June 29, 2007

Last Update Submit

May 31, 2016

Conditions

Outcome Measures

Primary Outcomes (1)

  • Progression to ESRD (i.e. need for renal replacement therapy by chronic dialysis or renal transplantation)

    4 times a year

Secondary Outcomes (1)

  • Doubling of serum creatinine (versus baseline), Rate of GFR decline, Incidence of fatal and non-fatal cardiovascular events (stroke, acute myocardial infarction, sudden death), Albumin to creatinine ratio and 24-hour urinary protein excretion.

    4 times a year

Study Arms (3)

Benazepril

EXPERIMENTAL
Drug: Benazepril

valsartan

EXPERIMENTAL
Drug: Valsartan

benazepril/valsartan

EXPERIMENTAL
Drug: Benazepril/Valsartan

Interventions

Patients satisfying the inclusion/exclusion criteria will be randomly given equivalent doses (half the standard doses recommended by the manufacturer for blood pressure control) of benazepril (10 mg/day) or valsartan (160 mg/day) or one fourth of the standard doses of both agents in combination (benazepril 5 mg/day and valsartan 80 mg/day).If well tolerated, treatment will be up-titrated to full dose of benazepril (20 mg/day) or valsartan (320 mg/day) or one half of the standard doses of both agents in combination (benazepril 10 mg/day and valsartan 160 mg/day).

Benazepril

Patients satisfying the inclusion/exclusion criteria will be randomly given equivalent doses (half the standard doses recommended by the manufacturer for blood pressure control) of benazepril (10 mg/day) or valsartan (160 mg/day) or one fourth of the standard doses of both agents in combination (benazepril 5 mg/day and valsartan 80 mg/day).If well tolerated, treatment will be up-titrated to full dose of benazepril (20 mg/day) or valsartan (320 mg/day) or one half of the standard doses of both agents in combination (benazepril 10 mg/day and valsartan 160 mg/day).

valsartan

Patients satisfying the inclusion/exclusion criteria will be randomly given equivalent doses (half the standard doses recommended by the manufacturer for blood pressure control) of benazepril (10 mg/day) or valsartan (160 mg/day) or one fourth of the standard doses of both agents in combination (benazepril 5 mg/day and valsartan 80 mg/day).If well tolerated, treatment will be up-titrated to full dose of benazepril (20 mg/day) or valsartan (320 mg/day) or one half of the standard doses of both agents in combination (benazepril 10 mg/day and valsartan 160 mg/day).

benazepril/valsartan

Eligibility Criteria

Age40 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Males and females \>40 years old;
  • High-risk subjects with type 2 diabetes (WHO criteria);
  • Serum creatinine concentration of 1.8 mg/dl or more (but less than 3.5 mg/dl);
  • Urinary albumin to creatinine ratio \>1000mg/g for the patients without previous ACE inhibitor and ARB therapy and \>500mg/g for the patients with previous ACE inhibitor or ARB therapy (in spot morning urine)
  • Legal capacity;
  • Written informed consent.

You may not qualify if:

  • Specific contraindications or history of hypersensitivity to the study drugs or other;
  • Serum potassium ≥ 6 mEq/L despite diuretic therapy, and optimized metabolic and acid/base control;
  • Bilateral renal artery stenosis;
  • Previous history of allergy or intolerance, or evidence of immunologically-mediated renal disease, systemic diseases, cancer;
  • Drug or alcohol abuse;
  • Any chronic clinical conditions that may affect completion of the trial or confound data interpretation;
  • Pregnancy or lactating;
  • Women of childbearing potential without following a scientifically accepted form of contraception;
  • Legal incapacity and/or other circumstances rendering the patient unable to understand the nature, scope and possible consequence of the trial;
  • Evidence of an uncooperative attitude;
  • Any evidence that patient will not be able to complete the trial follow-up;
  • Dual RAS blockade with an ACE inhibitor and an ARB.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (15)

Hospital "Azienda Ospedaliera Ospedali Riuniti di Bergamo" - Unit of Diabetology

Bergamo, Bergamo, Italy

Location

Clinical Research Center for Rare Diseases "Aldo e Cele Daccò"

Ranica, Bergamo, Italy

Location

Hospital "Bolognini"

Seriate, Bergamo, Italy

Location

Hospital "S.Marta e S.Venera"

Acireale, Catania, Italy

Location

Hospital "Vittorio Emanuele-Ferrarotto-Santo Bambino"

Catania, Catania, Italy

Location

Hospital " Casa Sollievo della Sofferenza" - Unit of Nephrology

San Giovanni Rotondo, Foggia, Italy

Location

University "Federico II"

Napoli, Napoli, Italy

Location

Hospital "G:Mazzini"

Teramo, Teramo, Italy

Location

IRCCS San Raffaele - Unit of General Medicine

Milan, Italy

Location

Hospital "Azienda Ospedaliera di Parma" - Unit of Nephrology

Parma, Italy

Location

Hospital "Azienda Ospedaliera di Treviglio e Caravaggio" - Ambulatory of Ponte San Pietro

Ponte San Pietro, Italy

Location

Hospital "Azienda Ospedaliera di Treviglio e Caravaggio" Unit of Diabetology and Metabolic Diseases

Romano di Lombardia, Italy

Location

University - AUSL 1 - Institute of Medical Pathology

Sassari, Italy

Location

Hospital "Azienda Ospedaliera di Treviglio-Caravaggio"Unit of Diabetology and Metabolic Diseases

Treviglio, Italy

Location

Clinical Department of Endocrinology, Diabetes and Metabolic Diseases University Medical Centre Ljubljana

Ljubljana, 1000, Slovenia

Location

Related Publications (2)

  • Natale P, Palmer SC, Navaneethan SD, Craig JC, Strippoli GF. Angiotensin-converting-enzyme inhibitors and angiotensin receptor blockers for preventing the progression of diabetic kidney disease. Cochrane Database Syst Rev. 2024 Apr 29;4(4):CD006257. doi: 10.1002/14651858.CD006257.pub2.

  • Cohen DL, Townsend RR. Is there added value to adding ARB to ACE inhibitors in the management of CKD? J Am Soc Nephrol. 2009 Aug;20(8):1666-8. doi: 10.1681/ASN.2008040381. Epub 2008 Sep 5.

MeSH Terms

Conditions

Diabetes Mellitus

Interventions

benazeprilValsartan

Condition Hierarchy (Ancestors)

Glucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System Diseases

Intervention Hierarchy (Ancestors)

TetrazolesAzolesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsValineAmino Acids, Branched-ChainAmino AcidsAmino Acids, Peptides, and ProteinsAmino Acids, Essential

Study Officials

  • Giuseppe Remuzzi, MD

    Mario Negri Institute for Pharmacological Research

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 29, 2007

First Posted

July 2, 2007

Study Start

May 1, 2007

Primary Completion

April 1, 2016

Study Completion

April 1, 2016

Last Updated

June 1, 2016

Record last verified: 2016-05

Locations