Clinical trial NCT00657514: Ranolazine Versus Placebo Effects on Exercise Tolerance in Patients With Heart Disease and Peripheral Arterial Disease
Official title: Evaluation of Ranolazine on Skeletal Muscle Endpoints During Exercise In Subjects With Chronic Angina and Peripheral Arterial Disease
Study type: INTERVENTIONAL
Overall status: WITHDRAWN
Phase: PHASE4
Conditions: Peripheral Arterial Disease
Angina
Keywords: hemoglobin desaturation kinetics
peripheral arterial disease
chronic angina
exercise tolerance
Lead sponsor: Colorado Prevention Center
Sponsor class: OTHER
First posted: 2008-04-14
Enrollment: 0
Sex: MALE
Minimum age (years): 40
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: After 6 weeks of maximal Ranolazine therapy, tissue hemoglobin desaturation kinetics will change compared to placebo in patients with chronic angina and peripheral arterial disease.

Detailed description: Study Endpoints:

Primary Endpoint:

• The primary endpoint of this study is the change in the kinetics of tissue hemoglobin oxygen desaturation (expressed as time constants) following the onset of exercise.

Secondary endpoints of this study include percent and absolute change in:

* Peak oxygen consumption
* Pulmonary oxygen uptake on-kinetics
* Steady state level of tissue hemoglobin desaturation during exercise
* Recovery kinetics of tissue oxygen saturation following exercise

Adverse events will be collected.

Exploratory Endpoints

* Peak Walking Time (PWT)
* Claudication Onset Time (COT)
* Time to Onset of Angina (TOA)

Study Design:

Investigator-initiated, prospective, randomized, double-blind, placebo-controlled study.

Inclusion Criteria:

1. Males age \> 40 years.
2. Subjects must have chronic stable angina, meeting the labeled indications for ranolazine:

   • Ranolazine is indicated for the treatment of chronic angina. Ranolazine should be reserved for subjects who have not achieved an adequate response with other anti-anginal drugs.
3. Subjects must have a resting ankle brachial index (ABI) of \< 0.90 with a post-exercise decrement of ≥ 10% in at least one leg, OR a resting ABI of ≥0.90 to ≤ 1.00 with a post-exercise decrement of ≥ 20% in at least one leg
4. The subject has provided written informed consent to participate, understands the requirements of the study, and agrees to return for the required assessments

Exclusion Criteria:

1. Non-atherosclerotic diseases of the peripheral circulation by clinical history
2. Unable to complete the first stage of the modified, extended Astrand treadmill protocol
3. Clinically significant ECG abnormalities or changes with exercise on the screening ECG
4. Evidence of critical limb ischemia (CLI)
5. Hepatic impairment (Child-Pugh Classes A \[mild\], B \[moderate\], or C \[severe\])
6. End stage renal disease requiring dialysis
7. Hemoglobin \< 12 mg/dL.
8. Platelet count \< 90,000/mL.
9. Planned surgical/endovascular intervention for coronary artery disease (CAD) or peripheral arterial disease (PAD) in the next 3 months
10. Maximal exercise is limited by symptoms other than claudication or angina
11. Significant mental illness or drug abuse within 30 days of enrollment that in the opinion of the Investigator could impact the subject's ability to successfully complete the trial
12. Known allergy to ranolazine
13. Pre-existing QTc prolongation on a resting electrocardiogram (ECG) at Screening due to the risk of worsening of this condition with the use of ranolazine
14. Treatment with QT prolonging drugs such as Class IA (e.g. quinidine) and Class III (e.g. sotalol, dofetilide), antiarrhythmics, amiodarone, and antipsychotics (e.g. thioridazine, ziprasidone)
15. Treatment with potent or moderately potent CYP3A inhibitors including ketoconazole and other azole antifungals, diltiazem, verapamil, macrolide antibiotics, cyclosporine, rifampin or structurally related rifabutin and rifapentin, phenobarbital, phenytoin, carbamazepine, St. John's Wort, or human immunodeficiency virus (HIV) protease inhibitors
16. The subject has previously received ranolazine within the 6-months prior to enrollment
17. The subject has received an investigational drug within 90 days prior to enrollment
18. Type 1 or type 2 diabetes mellitus
19. Congestive Heart Failure, ≥ New York Heart Association (NYHA) Class III
20. History of oxygen dependent Chronic Obstructive Pulmonary Disease (COPD)
21. Body Mass Index (BMI) \>35

Eligibility criteria: Inclusion Criteria:

* Males age \> 40 years.
* Subjects must have chronic stable angina, meeting the labeled indications for ranolazine:

Ranolazine is indicated for the treatment of chronic angina. Ranolazine should be reserved for subjects who have not achieved an adequate response with other anti-anginal drugs.

* Subjects must have a resting ankle brachial index (ABI) of \< 0.90 with a post-exercise decrement of ≥ 10% in at least one leg, OR a resting ABI of ≥0.90 to ≤ 1.00 with a post-exercise decrement of ≥ 20% in at least one leg
* The subject has provided written informed consent to participate, understands the requirements of the study, and agrees to return for the required assessments

Exclusion Criteria:

* Non-atherosclerotic diseases of the peripheral circulation by clinical history
* Unable to complete the first stage of the modified, extended Astrand treadmill protocol
* Clinically significant ECG abnormalities or changes with exercise on the screening ECG
* Evidence of critical limb ischemia (CLI)
* Hepatic impairment (Child-Pugh Classes A \[mild\], B \[moderate\], or C \[severe\])
* End stage renal disease requiring dialysis
* Hemoglobin \< 12 mg/dL.
* Platelet count \< 90,000/mL.
* Planned surgical/endovascular intervention for coronary artery disease (CAD) or peripheral arterial disease (PAD) in the next 3 months
* Maximal exercise is limited by symptoms other than claudication or angina
* Significant mental illness or drug abuse within 30 days of enrollment that in the opinion of the Investigator could impact the subject's ability to successfully complete the trial
* Known allergy to ranolazine
* Pre-existing QTc prolongation on a resting electrocardiogram (ECG) at Screening due to the risk of worsening of this condition with the use of ranolazine
* Treatment with QT prolonging drugs such as Class IA (e.g. quinidine) and Class III (e.g. sotalol, dofetilide), antiarrhythmics, amiodarone, and antipsychotics (e.g. thioridazine, ziprasidone)
* Treatment with potent or moderately potent CYP3A inhibitors including ketoconazole and other azole antifungals, diltiazem, verapamil, macrolide antibiotics, cyclosporine, or human immunodeficiency virus (HIV) protease inhibitors
* The subject has previously received ranolazine within the 6-months prior to enrollment
* The subject has received an investigational drug within 90 days prior to enrollment
* Type 1 or type 2 diabetes mellitus
* Congestive Heart Failure, ≥ New York Heart Association (NYHA) Class III
* History of oxygen dependent Chronic Obstructive Pulmonary Disease (COPD)
* Body Mass Index (BMI) \>35

Primary outcomes:
measure: skeletal muscle hemoglobin desaturation kinetics
timeFrame: 6 weeks
Secondary outcomes:
measure: peak exercise oxygen consumption
timeFrame: 6 weeks
measure: Pulmonary oxygen uptake on-kinetics
timeFrame: 6 weeks
measure: Steady state level of tissue hemoglobin desaturation during exercise
timeFrame: 6 weeks
measure: Recovery kinetics of tissue oxygen saturation following exercise
timeFrame: 6 weeks
measure: adverse events
timeFrame: 6 weeks
measure: Peak Walking Time (PWT)
timeFrame: 6 weeks
measure: Claudication Onset Time (COT)
timeFrame: 6 weeks
measure: Time to Onset of Angina (TOA)
timeFrame: 6 weeks
Other outcomes:
Locations:
city: Aurora
country: United States
facility: University of Colorado at Denver
state: Colorado
city: Denver
country: United States
facility: Denver Health and Hospital Authority (DHHA)
state: Colorado
city: Denver
country: United States
facility: Department of Veteran Affairs Medical Center
state: Colorado
Study officials:
affiliation: The Univesity of Colorado at Denver
name: Mark R Nehler, MD
role: PRINCIPAL_INVESTIGATOR
affiliation: Colorado Prevention Center
name: William R Hiatt, MD
role: STUDY_CHAIR
References:
citation: Bauer TA, Regensteiner JG, Brass EP, Hiatt WR. Oxygen uptake kinetics during exercise are slowed in patients with peripheral arterial disease. J Appl Physiol (1985). 1999 Aug;87(2):809-16. doi: 10.1152/jappl.1999.87.2.809.
citation: Barstow TJ, Lamarra N, Whipp BJ. Modulation of muscle and pulmonary O2 uptakes by circulatory dynamics during exercise. J Appl Physiol (1985). 1990 Mar;68(3):979-89. doi: 10.1152/jappl.1990.68.3.979.
citation: Bauer TA, Brass EP, Hiatt WR. Impaired muscle oxygen use at onset of exercise in peripheral arterial disease. J Vasc Surg. 2004 Sep;40(3):488-93. doi: 10.1016/j.jvs.2004.06.025.