Comparison of Prasugrel and Clopidogrel in Low Body Weight Versus Higher Body Weight With Coronary Artery Disease (FEATHER)

This study has been completed.
Sponsor:
Collaborator:
Daiichi Sankyo Co., Ltd.
Information provided by (Responsible Party):
Eli Lilly and Company
ClinicalTrials.gov Identifier:
NCT01107925
First received: April 19, 2010
Last updated: July 27, 2012
Last verified: July 2012
  Purpose

The 5-milligram (mg) dose of prasugrel in low body weight (LBW) patients with coronary artery disease produces a pharmacodynamic response within the same therapeutic range as 10-mg dose in higher body weight (HBW) patients.


Condition Intervention Phase
Coronary Artery Disease
Drug: prasugrel
Drug: clopidogrel
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Pharmacokinetics/Dynamics Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Pharmacokinetic and Pharmacodynamic Comparison of Prasugrel and Clopidogrel in Low Body Weight Versus Higher Body Weight Aspirin-Treated Subjects With Stable Coronary Artery Disease

Resource links provided by NLM:


Further study details as provided by Eli Lilly and Company:

Primary Outcome Measures:
  • Change From Baseline in Maximum Platelet Aggregation (MPA) to 20 Micromolar (µM) Adenosine Diphosphate (ADP) at Day 12 (Period 1) [ Time Frame: Baseline, Day 12 ] [ Designated as safety issue: No ]
    MPA to 20 micromolar (μM) ADP was assessed by light transmission aggregometry (LTA), an assay that measures platelet aggregation by determining the amount of light transmitted through a cuvette containing platelet-rich plasma stimulated with a platelet activator, such as ADP, relative to platelet-poor plasma (100% light transmittance). A lower MPA reflects stronger platelet inhibition, whereas a higher MPA reflects weaker inhibition.


Secondary Outcome Measures:
  • Change From Baseline in Vasodilator-Associated Stimulated Phosphoprotein (VASP) at Day 12 of Therapy [ Time Frame: Baseline, Day 12 ] [ Designated as safety issue: No ]
    VASP phosphorylation levels, expressed as the platelet reactivity index (PRI), reflect the degree of thienopyridine-mediated P2Y12 receptor inhibition and were used to compare prasugrel versus clopidogrel, in low body weight (LBW) participants compared to higher body weight (HBW) participants. PRI was calculated by VASP. The PRI indicates the level of P2Y12 receptor inhibition. A lower PRI reflects stronger inhibition of P2Y12 receptor thus stronger platelet inhibition, whereas a higher PRI reflects weaker inhibition of P2Y12 receptor and weaker platelet inhibition.

  • Change From Baseline in VerifyNow® P2Y12 Reaction Units (PRU) at Day 12 of Therapy [ Time Frame: Baseline, Day 12 ] [ Designated as safety issue: No ]
    The Accumetrics VerifyNow® P2Y12 assay measures platelet aggregation in whole blood and is reported in PRU. PRU indicates the extent of P2Y12 receptor-mediated platelet aggregation calculated as a function of rate and extent of platelet aggregation in an adenosine phosphate (ADP)-containing channel of the device. A lower PRU reflects stronger inhibition of platelet aggregation, whereas a higher PRU reflects weaker inhibition of platelet aggregation.

  • Pharmacokinetic (PK) Analysis of the Concentration-Time Curve (AUC) [ Time Frame: baseline (pre-dose) up to 4 hours post-dose ] [ Designated as safety issue: No ]
    A pharmacokinetic-pharmacodynamic (PK-PD) analysis comparing MPA (LTA) and AUC was conducted as originally intended, however the graphic output is not possible here. Therefore, the PK portion is presented here as AUC and the PD portion is presented in Secondary Outcome Measure #5. AUC was calculated through the last scheduled sampling time of 4 hours [AUC (0-4)] or through the sampling time of the last quantifiable concentration prior to 4 hours. AUC values were denoted AUC(0-tlast) in both instances.

  • Change From Baseline in Maximum Platelet Aggregation (MPA) as Measured by Light Transmission Aggregometry (LTA) at Day 12 of Therapy [ Time Frame: Baseline , Day 12 ] [ Designated as safety issue: No ]
    MPA to 20 micromolar (μM) adenosine diphosphate (ADP) was assessed by LTA, an assay that measures platelet aggregation by determining the amount of light transmitted through a cuvette containing platelet-rich plasma stimulated with a platelet activator, such as ADP, relative to platelet-poor plasma (100% light transmittance). A lower MPA reflects stronger platelet inhibition, whereas a higher MPA reflects weaker inhibition.


Enrollment: 72
Study Start Date: March 2010
Study Completion Date: August 2011
Primary Completion Date: August 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 5 mg prasugrel Drug: prasugrel
Administered orally, daily for 12 days
Other Names:
  • Efient
  • Effient
  • LY640315
  • CS747
Active Comparator: 10 mg prasugrel Drug: prasugrel
Administered orally, daily for 12 days
Other Names:
  • Efient
  • Effient
  • LY640315
  • CS747
Active Comparator: 75 mg clopidogrel Drug: clopidogrel
Administered orally, daily for 12 days

  Eligibility

Ages Eligible for Study:   18 Years to 74 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Subjects with a history of stable coronary artery disease who are not currently indicated for treatment with a thienopyridine (that is, prasugrel, clopidogrel, or ticlopidine)
  • Provision of written informed consent
  • For women of child-bearing potential only (that is, women who are not surgically or chemically sterilised and who are between menarche and 1 year post menopause), test negative for pregnancy (based on a urine or serum pregnancy test to be performed before randomisation) and agree to use a reliable method of birth control during the study

Exclusion Criteria:

  • Unstable coronary artery disease
  • Percutaneous Coronary Intervention (PCI) or Coronary Artery Bypass Graft Surgery (CABG) within the previous 90 days
  • History of refractory ventricular arrhythmias within the last 6 months; an implanted defibrillator device; congestive heart failure within 6 months prior to screening; major surgery, or severe trauma, fracture or organ biopsy within 3 months prior to enrollment
  • Any planned surgical procedure or any coronary revascularisation (surgical or percutaneous) planned within 60 days following randomisation
  • Any known contraindication to treatment with an antiplatelet agent
  • Significant hypertension at the time of screening or randomisation
  • Clinically significant out-of-range values for platelet count or haemoglobin at screening, in the investigator's opinion, or results of clinical laboratory tests at the time of screening that are judged to be clinically significant for the study population, as determined by the investigator
  • Prior history or presence of significant bleeding disorders, abnormal bleeding tendency, or personal history of coagulation or bleeding disorders.
  • Prior history or clinical suspicion of cerebral vascular malformations, intracranial neoplasm, Transient Ischemic Attack (TIA) or stroke.
  • Prior history of thrombocytopenia or thrombocytosis
  • Use of antiplatelet agents (besides aspirin) within 10 days prior to screening; the use (or planned use) of heparin, oral anticoagulants, or fibrinolytic agents within 30 days of screening; or subjects receiving daily treatment with nonsteroidal anti-inflammatory drugs (NSAIDS) or cyclooxygenase-2 (COX-2) inhibitors that cannot be discontinued for the duration of the study
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01107925

Locations
United States, Florida
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
Jacksonville, Florida, United States, 32209
United States, Ohio
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
Cincinnati, Ohio, United States, 45212
Ireland
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
Dublin, Ireland, 9
Netherlands
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
Nieuwegein, Netherlands, 3435 CM
Sweden
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
Lund, Sweden, 22185
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
Uppsala, Sweden, 75185
Sponsors and Collaborators
Eli Lilly and Company
Daiichi Sankyo Co., Ltd.
Investigators
Study Director: Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST) Eli Lilly and Company
  More Information

No publications provided

Responsible Party: Eli Lilly and Company
ClinicalTrials.gov Identifier: NCT01107925     History of Changes
Other Study ID Numbers: 12921, H7T-MC-TADI
Study First Received: April 19, 2010
Results First Received: July 27, 2012
Last Updated: July 27, 2012
Health Authority: United States: Food and Drug Administration
Sweden: Medical Products Agency
Ireland: Irish Medicines Board
Netherlands: Medicines Evaluation Board (MEB)

Keywords provided by Eli Lilly and Company:
Platelet function

Additional relevant MeSH terms:
Coronary Artery Disease
Myocardial Ischemia
Coronary Disease
Body Weight
Heart Diseases
Cardiovascular Diseases
Arteriosclerosis
Arterial Occlusive Diseases
Vascular Diseases
Signs and Symptoms
Clopidogrel
Prasugrel
Platelet Aggregation Inhibitors
Hematologic Agents
Therapeutic Uses
Pharmacologic Actions
Purinergic P2Y Receptor Antagonists
Purinergic P2 Receptor Antagonists
Purinergic Antagonists
Purinergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs

ClinicalTrials.gov processed this record on September 30, 2014