The Influence of Smoking Status on Prasugrel and Clopidogrel Treated Subjects Taking Aspirin and Having Stable Coronary Artery Disease

Completed · Phase 4

Conditions studied: Coronary Artery Disease

In brief

This study is being conducted to determine if smoking will influence the platelet aggregation inhibition ability of clopidogrel and prasugrel. It will also determine if smoking has any effect on the plasma concentrations of the active metabolite of prasugrel and the active and inactive metabolites of clopidogrel. The primary hypothesis is that smoking status will influence the antiplatelet effects and active metabolite concentrations of clopidogrel but will have no impact on prasugrel's antiplatelet effects or active metabolite concentrations.

Key facts

Study ID

NCT01260584

Run by

Daiichi Sankyo

People needed

110

Starts

2010-11-01

Expected to finish

2011-09-01

Last updated by the study team

2019-01-09

Who can join

Age: 18 and older, up to 74. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Male or female subjects > or = 18 years and <75 years of age;
• Weight > or = 60 kg;
• On aspirin therapy (81 mg to 325 mg daily) at the time of screening and able to maintain a consistent aspirin dosing regimen from the baseline visit through the final study visit;
• Subjects who do not have contraindications for a thienopyridine (ie, prasugrel, clopidogrel, or ticlopidine) and have a history of stable atherosclerosis represented by CAD, defined as any of the following:
• Chronic stable angina;
• Documented prior ACS event > or = 30 days before screening and not currently prescribed or currently on thienopyridine therapy;
• Previous coronary revascularization including percutaneous transluminal coronary angioplasty, stent, or coronary artery bypass graft;
• Coronary Artery Disease (> or = 40% obstruction) in at least one coronary vessel after angiography;
• Documented history of positive stress test; or
• High coronary artery calcium score (> or = 90th percentile for age and gender) determined by cardiac computed tomography scan;
• Current smokers who smoke > or = ½ pack per day of cigarettes with a NicAlert™ level of 6;
• Non-smokers with a NicAlert level of 0, 1, or 2;
• Female subjects who meet one of the following:
• Women of childbearing potential with a negative serum pregnancy test at screening, who are not breastfeeding, do not plan to become pregnant during the study, and agree to use an approved method of birth control during the study. Approved methods of birth control are intrauterine device, diaphragm plus spermicide, or female condom plus spermicide. Abstinence, partner's use of condoms, partner's vasectomy, and hormonal contraceptives are NOT acceptable methods of contraception;
• Women who have been postmenopausal for at least 1 year or have had a hysterectomy, bilateral salpingo-oophorectomy, or tubal ligation at least 6 months prior to signing the Informed Consent Form (ICF); and
• Subjects with a competent mental condition to provide written informed consent before entering the study.

You may not qualify if…

• Subjects who received a bare metal stent and/or a drug-eluting stent within the last 12 months;
• Subjects who have had an angiogram < or = 7 days before randomization;
• Any other formal indication for the use of a thienopyridine;
• Subjects with a history of refractory ventricular arrhythmias;
• Subjects with a history of an implantable defibrillator device;
• Subjects with a history or evidence of congestive heart failure (New York Heart Association Class III or above) within 6 months prior to screening;
• Subjects with significant hypertension (systolic blood pressure >180 mmHg or diastolic blood pressure >110 mmHg) at either the time of screening or baseline assessment;
• Bleeding risk exclusion criteria:
• Any known contraindication to treatment with an anticoagulant or antiplatelet agent;
• Prior history or clinical suspicion of cerebral vascular malformations, intracranial tumor, transient ischemic attack, or stroke, or recent history (within 3 months) of head trauma;
• Prior history or presence of significant bleeding disorders (eg, hematemesis, melena, severe or recurrent epistaxis, hemoptysis, hematuria, or intraocular bleeding);
• History (within the last 5 years) or presence of gastric ulcers. Previous history of duodenal ulcer is acceptable but must have been successfully surgically or medically treated with no further evidence of disease in the past 6 months (from screening);
• Prior history of abnormal bleeding tendency (ie, prolonged bleeding on dental extraction, tonsillectomy, or previous surgical procedure);
• Known prior history or presence of thrombocytopenia (platelet count <100,000/mm3) or thrombocytosis (platelet count >500,000/mm3) or recent history (within 6 months) of hemoglobin <10 mg/dL;
• International normalized ratio (INR) >1.5 or activated partial thromboplastin time (aPTT) > upper limit of normal (ULN) of laboratory reference range at screening;
• History of major surgery, severe trauma, fracture, or organ biopsy within 3 months prior to enrollment;
• Prior/concomitant therapy exclusion criteria:
• Subjects taking prasugrel, clopidogrel, ticlopidine, cilostazol, dipyridamole, warfarin, heparin, direct thrombin inhibitors, or GPIIb/IIIa inhibitors < or = 10 days prior to randomization or during study participation;
• Use (or planned use) of fibrinolytic agents within 30 days before screening or during study participation;
• Subjects receiving treatment with nonsteroidal anti-inflammatory drugs or cyclooxygenase-2 inhibitors exceeding 3 doses per week;
• Subjects taking proton pump inhibitors (eg, lansoprazole, esomeprazole, omeprazole, pantoprazole, or rabeprazole) < or = 10 days prior to randomization or during study participation;
• Use or planned use of any herbal supplements < or = 10 days prior to randomization or during study participation;
• Use or planned use of the following strong inhibitors of various CYP pathways < or =10 days prior to randomization or during study participation: ciprofloxacin, cimetidine, fluvoxamine, estradiol, ethinylestradiol, fluconazole, amiodarone, indinavir, nelfinavir, ritonavir, saquinavir, clarithromycin, erythromycin, telithromycin, itraconazole, ketoconazole, fluconazole, nefazodone, or grapefruit-containing products;
• Use or planned use of the following strong inducers of various CYP pathways < or = 10 days prior to randomization or during study participation: rifampin, barbiturates, carbamazepine, dexamethasone, or St. John's Wort;
• Female subjects taking hormonal contraception or hormonal replacement therapy during study participation;

Where it is running

• Sanai Center for Thrombosis Research — Baltimore, Maryland, United States
• Medpace Clinical Pharmacology Unit — Cincinnati, Ohio, United States
• The Carl and Edyth Lindner Center for Research and Education at the Christ Hospital — Cincinnati, Ohio, United States

Full record on ClinicalTrials.gov

Trial information comes from ClinicalTrials.gov and is refreshed daily. TrialsForMe does not provide medical care and does not run the studies it lists.