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Pharmacogenomics of Antiplatelet Response - I — PARes-I  

Coronary Artery Disease Clinical Trial

Official title:
PHARMACOGENOMICS OF ANTI-PLATELET RESPONSE - I

Clinical Trial Summary

This clinical trial is examining the role of genetic polymorphism on the effect of clopidogrel (with or without aspirin) on platelet response in persons at high-risk for myocardial infarction or stroke due to family history of early-onset coronary artery disease.

Clinical Trial Description

The main goal of this study is to explore the impact of the PEAR1 genetic variant (rs12041331) on responsiveness to clopidogrel. The investigators will further assess the role of other genetic variants in determining the response to single or dual anti-platelet therapy. Apparently healthy subjects (N= 2108) from high-risk families are being (a) identified from a proband with early-onset CAD and (b) genotyped on the Illumina 1 million platform, with imputation to 2.5 million single nucleotide polymorphisms. The investigators plan to characterize the variance in platelet aggregation to multiple agonists (ADP, collagen, and arachidonic acid) after 1-week therapy with clopidogrel in a high-risk subset of GeneSTAR subjects (N=100). The investigators further plan to determine the extent to which variants identified in the PEAR1 gene modify platelet responsiveness to inhibition by clopidogrel in this high-risk subset. In addition, the investigators aim is to determine the extent to which variants in other recently discovered genes, by themselves, and in combination with PEAR1, modify platelet responsiveness to clopidogrel alone and with aspirin in this high-risk subset. Lastly, the investigators also want to determine what changes in platelet mRNA are produced by aspirin alone and by aspirin with clopidogrel. ;

Study Design

Allocation: Non-Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Prevention

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01815008
Study type Interventional
Source Johns Hopkins University
Contact
Status Completed
Phase Phase 4
Start date October 2012
Completion date June 2014
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