Revascularization of Renal Artery Stenosis Versus Medical Therapy for the Treatment of Ischemic Nephropathy

Chronic Kidney Disease Clinical Trial

— NITER  

Official title:

Phase 4 Study of Medical Therapy Versus Medical Therapy Plus Renal Artery Stenting in Preventing the Progression of Renal Failure in Atherosclerotic Renovascular Disease

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT01023373
• Other study ID #: 388-2002
• Status: Active, not recruiting
• Phase: Phase 4
• First received: December 1, 2009
• Last updated: December 1, 2009
• Start date: October 2003
• Est. completion date: May 2009

Study information

• Verified date: December 2009
• Source: Azienda Unità Sanitaria Locale di Piacenza
• Contact: n/a
• Is FDA regulated: No
• Health authority: Italy: National Monitoring Centre for Clinical Trials - Ministry of Health
• Study type: Interventional

Clinical Trial Summary

The aim of the study is to value, in patients with chronic kidney disease and hypertension, whether medical therapy plus interventional renal artery revascularization is superior to medical therapy alone for the treatment of hemodynamically significant (>70%) atherosclerotic renal artery stenosis, diagnosed by duplex doppler ultrasonography and confirmed by magnetic resonance angiography, in terms of avoidance of the progression of renal damage, control of hypertension and in reducing the cerebro and cardiovascular complications.

Description:

Atherosclerotic renovascular disease (ARVD), due to renal hypoperfusion caused by mono or bilateral renal artery stenosis (RAS), is a increasing cause of chronic kidney disease and many elderly patients start dialysis due to ARDVD. Moreover ARVD is frequently progressive and reduces life-expectancy more than other causes of end stage renal disease, with a mortality rate higher than in patients with stable angina, similar to that of patients operated for colon cancer.

Unfortunately, there is not a definite therapy to cure this disease, despite important advancements in both medical therapy and in interventional radiology. Aim of the study is to see whether percutaneous transluminal interventional radiology plus stenting (PTRS) of the renal artery offers more, in terms of both preventing the progression of renal failure and controlling the hypertension, compared with the medical therapy addressed to control hypertension, improve the dyslipidemic profile and optimise the platelet anti-aggregant therapy, following the most recent guidelines. The eligible patients will be centrally randomized to:

1. medical treatment with hypotensive drugs (all class of hypotensive agents will be used according to single-center experience including drugs agent on renin-angiotensin-aldosterone-system, when permitted), lipid lowering therapy (namely all class of statins-or hydroxymethylglutaryl-coA reductase inhibitors)and anti-platelet (acetylsalicylate and/or ticlopidine or clopidrogel according to single-center experience) or to

2. the same medical therapy, as previously described in group a, associated with PTRS, according to a standardized protocol, with a follow up at 2 years extended to other 2 years

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 80
• Est. completion date: May 2009
• Est. primary completion date: September 2008
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 45 Years to 80 Years

Eligibility

Inclusion Criteria:

• Age = 80 years

• Presence of ostial renal artery stenosis = 70% (determined by Duplex Doppler ultrasonography and confirmed by Magnetic Resonance valuated by at least two experienced operators)

• Serum creatinine = 3 mg/dl and/or creatinine clearance (Modification of Diet in Renal Disease, MDRD formula)= 30 ml/min, defined as stage 3 or greater CKD based on National Kidney Foundation classification

• Longitudinal ultrasonographic diameter of the stenotic kidney = 8 cm

• Blood pressure values = 150/90 mmHg with the use of less than four hypotensives drugs

Exclusion Criteria:

• Age > 80 years

• Other well-known nephropathy cause of renal failure

• Duplex doppler ultrasonography Resistive Index values >0.8

• Total occlusion of renal artery lumen

• Occurrence of cerebral or cardiac vascular diseases in the 6 months before the enrolment in the study

• Malignancy with a life expectation less than one year

• Previous documented cholesterol thrombo embolization episodes (clinically, bioptically or instrumentally)

• Liver failure

• Cardiac failure (NYHA IV class) or instable angina

• Well-known intolerance or contraindications to the use of iodinated contrast media, to statins or to anti platelets drugs

• Previous renal angioplasty

• Pregnancy

Study Design

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

Related Conditions & MeSH terms

• Atherosclerosis
• Chronic Kidney Disease
• Constriction, Pathologic
• Hypertension, Renovascular
• Ischemia
• Ischemic Nephropathy
• Kidney Diseases
• Renal Artery Obstruction
• Renal Artery Stenosis
• Renal Insufficiency, Chronic

Intervention

Drug:
• Medical treatment
hypotensive drugs, statins and anti-platelets

Procedure:
• PTRS
Percutaneous transluminal renal artery stenting. The same medical therapy, as in group A, plus PTRS

Device:
• renal artery stent
Non-drug intervention, percutaneous transluminal renal artery stent angioplasty
• renal artery stent
Adding the renal artery stenting (in group B) to the optimal medical therapy (as in group A) that includes hypotensive drugs, statins and antiplatelet therapy

Locations

Country	Name	City	State
Italy	Divisione di Nefrologia e Dialisi, "Guglielmo da Saliceto" Hospital, Azienda USL Piacenza	Piacenza

Sponsors (1)

Lead Sponsor	Collaborator
Azienda Unità Sanitaria Locale di Piacenza

Country where clinical trial is conducted

Italy, 

References & Publications (1)

Scarpioni R, Michieletti E, Cristinelli L, Ugolotti U, Scolari F, Venturelli C, Cancarini G, Pecchini P, Malberti F, Maroldi R, Rozzi G, Olivetti L. Atherosclerotic renovascular disease: medical therapy versus medical therapy plus renal artery stenting in — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Death, Initiation of dialysis therapy or either serum creatinine increase more than 20% or reduction by > 20% in estimated clearance of creatinine (with MDRD formula)		0.5, 1 and 2 years follow up plus extended 4 yrs	Yes
Secondary	Systolic and diastolic blood pressure values at 0.5, 1 and 2 yrs follow up, with an extended follow up after 2 yrs		0.5, 1 and 2 years follow up plus extended 4 yrs	Yes
Secondary	Number of hypotensive drugs		0.5, 1 and 2 years follow up plus extended 4 yrs	Yes
Secondary	Results of renal scintigraphy		0.5, 1 and 2 years follow up plus extended 4 yrs	Yes
Secondary	Incidence of complications due to interventional manoeuvres		0.5, 1 and 2 years follow up plus extended 4 yrs	Yes
Secondary	Changes in the incidence of vascular complications in extra-renal districts		0.5, 1 and 2 years follow up plus extended 4 yrs	Yes