Vein-Coronary Atherosclerosis And Rosiglitazone After Bypass Surgery: The VICTORY Trial

Diabetes Clinical Trial

— VICTORY  

Official title:

A Multicenter Randomized Double-Blind Trial Comparing Rosiglitazone to Placebo for the Prevention of Atherosclerosis Progression After Coronary Bypass Surgery in Diabetic Patients

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00169832
• Other study ID #: 49653/416
• Secondary ID: ISRCTN54136716
• Status: Completed
• Phase: Phase 3
• First received: September 12, 2005
• Last updated: October 9, 2008
• Start date: June 2003
• Est. completion date: July 2007

Study information

• Verified date: October 2008
• Source: Laval University
• Contact: n/a
• Is FDA regulated: No
• Health authority: Canada: Health Canada
• Study type: Interventional

Clinical Trial Summary

HYPOTHESES

• Rosiglitazone in diabetic patients with previous coronary bypass surgery may prevent or slow the progression of atherosclerosis in SVGs and native coronary arteries.

• Rosiglitazone has favorable effects on adipose tissue distribution variables as well as on thrombosis, pro-inflammatory, and lipid profiles in diabetic patients after coronary bypass artery surgery.

• Rosiglitazone therapy influences favorably metabolism and clinical outcomes in diabetic patients after coronary artery bypass surgery.

OBJECTIVES

• PRIMARY To assess the efficacy of rosiglitazone to reduce atherosclerosis progression in vein grafts in diabetic patients after coronary bypass surgery by using IVUS imaging after a 12 mo follow-up.

• SECONDARY

• To prospectively compare the secondary IVUS endpoints.

• To prospectively compare the angiographic endpoints.

• To prospectively compare the metabolic risk factor endpoints.

• To prospectively compare the body composition and distribution endpoints.

• To prospectively compare the clinical outcomes of rosiglitazone versus standard care using composite endpoints.

Description:

STUDY DESIGN

This is a prospective multicenter randomized placebo-controlled double-blind trial assessing the efficacy and safety of rosiglitazone in the prevention of atherosclerosis progression in vein grafts and native coronary arteries of diabetic patients. Stable diabetic patients with previous coronary bypass surgery (≥ 1 year ≤ 10 years) will be screened. After baseline evaluation, all eligible patients will undergo baseline coronary angiogram. IVUS will be performed in a segment length of at least 40 mm in a SVG suitable for IVUS analysis and in a segment length of at least 20 mm in the anastomosed native coronary artery corresponding to the SVG chosen. Following the IVUS procedure, patients will be randomized to either rosiglitazone treatment or to placebo in addition to their standard clinical care. Study drug will be titrated over an 8-week period up to a dose of 8 mg/day (or to maximum tolerated dose). The patients will receive the study drug or the placebo for 50-54 weeks in a double-blind manner. At the beginning and at 2, 4, 6, 8, 10 and 12 months of treatment, patients will be subjected to a set of morphological, physiological and metabolic evaluations. At the final visit (12 months), patients will also be submitted to IVUS and angiography.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 193
• Est. completion date: July 2007
• Est. primary completion date: July 2007
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 40 Years to 75 Years

Eligibility

Inclusion Criteria:

AT SCREENING:

1. Male or female, aged = 40 years & = 75 years.

2. Women of childbearing potential with contraceptive measure, or of non-childbearing potential or surgically sterile.

3. Type 2 diabetes mellitus.

4. Patients with no new medication for hyperglycemia and no change in dose of oral hypoglycemic medication within the last 3 mo prior to screening.

5. Diabetic patients with ischemic heart disease and CABG with at least one SVG (=1 yr & =10 yrs).

6. Patient agrees to participate.

7. Patient legally capable of giving consent and understand what participation in study entails, potential risks and benefits, freedom to withdraw without any prejudice to subsequent medical arrangement or treatment, sign an ICF prior to any protocol specific procedure.

AT IVUS & ANGIOGRAPHY (VISIT 2):

Subject eligible if at least 1), 2) and 3) of the following criteria apply:

1. Patient with at least 1 patent SVG.

2. Segment length of at least 40 mm in SVG suitable for IVUS.

3. Reference of target (SVG) diameter = 2.5 mm.

If anastomosed native coronary artery or non grafted coronary artery can be evaluated, the following criteria must be met:

4. Reference of target anastomosed native coronary artery or non grafted coronary artery diameter= 2.5 mm.

5. Segment length of at least 20 mm in anastomosed native coronary artery corresponding to SVG chosen or, in case of impossibility of performing IVUS in the anastomosed coronary artery, a non grafted coronary artery (= 30 mm length segment) might be used for reference.

Exclusion Criteria:

AT SCREENING:

1. Clinically significant abnormality at screening tests & exams.

2. Type 1 diabetes or history of diabetic ketoacidosis.

3. Uncontrolled type 2 diabetes mellitus.

4. Recent MI or ACS (= 90 days).

5. History of hypersensitivity to thiazolidinediones (TZD) or compounds of similar chemical structures.

6. Last LVEF= 35%.

7. SBP>170mmHg or DBP>100mmHg at screening/baseline should be appropriately treated and under control prior to randomization.

8. Unstable or Canadian Cardiovascular Society class III and IV angina, acute heart failure or congestive heart failure (NYHA class III and IV).

9. History of hepatocellular reaction/severe oedema/other potentially fluid-related AE associated with use of any TZD or PPAR-? agonist.

10. Hepatic disease.

11. Renal dysfunction.

12. Anemia.

13. TG = 10 mmol/L.

14. History of PCI in all SVG(s).

15. Known occlusion(s) of all SVG(s).

16. Treatment involving TZD within 3 mo prior to screening.

17. Chronic use (= 6 mo) of insulin for glycemic control at any time in the past or administration of insulin any time within the last 12 mo.

18. Allergy to contrast agents.

19. Current intake of anorectic agents or have been taken off an anorectic agent or equivalent within 3 mo prior to screening.

20. Patients for whom oral or injectable corticosteroids are used on a regular or recurrent basis.

21. Recent history/suspicion of current drug abuse or alcohol abuse within last 6 mo.

22. Women breast feeding, pregnant, or planning to become pregnant during conduct of trial and for 30 days after study completion.

23. Other illness that precludes survival.

24. History of malignancy within the last 5 yrs.

25. Concurrent participation in other investigational device or drug studies and/or having received any experimental therapeutic agents within 30 days of the screening.

26. Use of any investigational drug for glycemic control within 3 mo of the screening.

27. Patient travelling out of town/country for periods exceeding 2 mo.

28. Medical condition which may interfere with intake and/or absorption of study medication.

29. Patients unwilling or unable to comply with procedures.

30. Recent major surgery within 90 days of the screening.

AT IVUS AND ANGIOGRAPHY (VISIT 2):

1. PCI was performed on the target segment(s) after CABG.

2. Target SVG and/or target native coronary artery show = 50% angiographic lesion precluding IVUS.

3. Thrombus/thrombus aspect in target vessels.

4. Target vessel has been subjected to surgical endarterectomy.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention

Related Conditions & MeSH terms

• Atherosclerosis
• Coronary Artery Bypass Grafting
• Diabetes

Intervention

Drug:
• Rosiglitazone or placebo
Rosiglitazone 4 to 8 mg/day or placebo, for 12 months

Locations

Country	Name	City	State
Canada	CRMSBC	Bonaventure	Quebec
Canada	QEII Health Sciences Center - Halifax Infirmary	Halifax	Nova Scotia
Canada	Hamilton Health Sciences - Mc Master Clinic	Hamilton	Ontario
Canada	CHUM Notre-Dame Hospital	Montreal	Quebec
Canada	Laval Hospital	Sainte-Foy	Quebec
Canada	Toronto General Hospital	Toronto	Ontario
Spain	Hospital Del Mar	Barcelona
Spain	Hospital Universitari Vall D'Hebron	Barcelona
Spain	Hospital Universitarion Son Dureta	Palma de Mallorca

Sponsors (2)

Lead Sponsor	Collaborator
Laval University	GlaxoSmithKline

Countries where clinical trial is conducted

Canada,  Spain, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in plaque volume in one SVG (by IVUS)		12 months	No
Secondary	1 Change in plaque volume in segment of anastomosed coronary artery		12 months	No
Secondary	2 Changes in lumen and total vessel volumes and lumen plaque total vessel areas in SVG and coronary segments		12 months	No
Secondary	3 Changes in qualitative plaque characterization in the SVG and coronary segments		12 months	No
Secondary	4 Patients showing atherosclerosis changes		12 months	No
Secondary	5 Atherosclerosis changes concordance and discordance		12 months	No
Secondary	6 New occlusions in native coronary arteries or SVGs		12 months	No
Secondary	7 Changes in reference and minimum lumen diameters of the SVG		12 months	No
Secondary	8 Per patient percentage of initially patent SVGs that had significant progression of atherosclerosis at the site of greatest change at follow-up		12 months	No
Secondary	9 Changes of indices for comprehensive lipid thrombosis and pro-inflammatory profiles as well as glucose-insulin homeostasis, microalbuminuria, adhesion molecules, adipokines, and other markers relevant to the evaluation and management of cardiovascular		12 months	No
Secondary	10 Changes in abdominal areas and volumes of adipose tissue areas		12 months	No
Secondary	11 Changes in body composition, body weight, waist circumference and BMI		12 months	No
Secondary	12 Clinical laboratory parameters, physical examinations, vital signs, ECGs, concomitant medication and adverse events		12 months	No
Secondary	13 Death, MI, TIA, stroke, hospitalization and ischemia-driven interventions		12 months	No
Secondary	14 Fluid retention		12 months	No