ISRCTN ISRCTN14751416
DOI https://doi.org/10.1186/ISRCTN14751416
Protocol serial number N/A
Sponsor Geneva University Hospital (Switzerland)
Funders University of Geneva Cardiology Foundation (GECOR), Geneva University Hospital Internal Medicine Department
Submission date
24/01/2006
Registration date
27/01/2006
Last edited
14/02/2008
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Circulatory System
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Not provided at time of registration

Contact information

Prof François Mach
Scientific

Geneva University Hospital
Cardiology Division
24 Micheli-du-Crest
Geneva
1211
Switzerland

Phone +41 (0)22 382 7234
Email francois.mach@medecine.unige.ch

Study information

Primary study designInterventional
Study designOpen labelled clinical study with patients admitted for coronary angioplasty
Secondary study designRandomised controlled trial
Scientific title
Study objectives150 mg/day maintenance dose will increase the biological effect of clopidogrel in clopidogrel low responders
Ethics approval(s)This protocol has been approved by the ethics committee of the internal medicine department in November 2005
Health condition(s) or problem(s) studiedCardiovascular outpatients
InterventionAfter a loading dose of clopidogrel (600 mg), patients will take a standard dose of clopidogrel 75 mg once a day for 15 days.


At day 15, adenosine diphosphate (ADP) induced platelet aggregation and measurement of phosphorylated vasodilator-stimulated phosphoprotein (VASP-P) by a flow cytometric technique will be performed. If patients are clopidogrel resistant, they will receive 150 mg (2x75) once a day during the next 15 days. ADP-induced platelet aggregation and measurement of VASP-P will be performed at day 30.
Intervention typeDrug
PhaseNot Specified
Drug / device / biological / vaccine name(s)Clopidogrel
Primary outcome measure(s)

Biological effect of clopidogrel

Key secondary outcome measure(s)

Genetic association study

Completion date30/12/2006

Eligibility

Participant type(s)Patient
Age groupNot Specified
SexNot Specified
Target sample size at registration150
Key inclusion criteriaCardiovascular outpatients on 75 mg/day clopidogrel
Key exclusion criteriaAnticoagulation
Date of first enrolment01/12/2005
Date of final enrolment30/12/2006

Locations

Countries of recruitment

  • Switzerland

Study participating centre

Geneva University Hospital
Geneva
1211
Switzerland

Results and Publications

Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
IPD sharing plan