[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100648282":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":30,"centralContacts":35,"locations":41,"responsibleParty":61,"collaborators":65,"id":67,"slug":68,"hasResults":69,"nctId":70,"briefTitle":71,"officialTitle":72,"acronym":73,"eligibilityCriteria":74,"healthyVolunteers":75,"sex":76,"minAge":77,"maxAge":25,"enrollmentInfo":78,"targetDuration":25,"studyType":81,"phases":82,"briefSummary":84,"conditions":85,"keywords":87,"overallStatus":89,"whyStopped":25,"lastUpdateSubmitDate":90,"lastUpdatePostDateStruct":91,"startDateStruct":94,"completionDateStruct":96,"leadSponsor":98,"locationsCount":99},{"fullName":5,"class":6},"University Hospital, Geneva","OTHER",[8,15],{"label":9,"type":10,"description":11,"interventionNames":12},"Aspirin → Clopidogrel Sequence","EXPERIMENTAL","Participants receive aspirin 100 mg once daily for 14 days, followed by a 14-day washout period, then clopidogrel 75 mg once daily for 14 days. Platelet function is assessed at baseline and after each treatment period.",[13,14],"Drug: Aspirin","Drug: Clopidogrel",{"label":16,"type":10,"description":17,"interventionNames":18},"Clopidogrel → Aspirin Sequence","Participants receive clopidogrel 75 mg once daily for 14 days, followed by a 14-day washout period, then aspirin 100 mg once daily for 14 days. Platelet function is assessed at baseline and after each treatment period.",[13,14],[20,26],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":25},"DRUG","Aspirin","Aspirin 100 mg administered orally once daily for 14 consecutive days during one treatment period of the randomized crossover study. Participants receive aspirin either during Period 1 or Period 2 depending on the randomized treatment sequence. A 14-day washout period separates the two treatment periods.",[9,16],null,{"type":21,"name":27,"description":28,"armGroupLabels":29,"otherNames":25},"Clopidogrel","Clopidogrel 75 mg administered orally once daily for 14 consecutive days during one treatment period of the randomized crossover study. Participants receive clopidogrel either during Period 1 or Period 2 depending on the randomized treatment sequence. A 14-day washout period separates the two treatment periods.",[9,16],[31],{"name":32,"affiliation":33,"role":34},"François Mach, Prof","HUG","PRINCIPAL_INVESTIGATOR",[36],{"name":37,"role":38,"phone":39,"phoneExt":25,"email":40},"Kapka Miteva, PhD","CONTACT","+41 22 379 4648","Kapka.Miteva@unige.ch",[42],{"facility":43,"status":25,"city":44,"state":25,"zip":45,"country":46,"countryCode":47,"cosmosGeoPoint":48,"geoPoint":53,"contacts":54},"Hopitaux Universitaires de Genève","Geneva","1205","Switzerland","CH",{"type":49,"coordinates":50},"Point",[51,52],6.14569,46.20222,{"lat":52,"lon":51},[55,60],{"name":56,"role":38,"phone":57,"phoneExt":58,"email":59},"Véronique Menoni, PhD","0223729195","+41","veronique.menoni@hug.ch",{"name":32,"role":34,"phone":25,"phoneExt":25,"email":25},{"type":62,"investigatorFullName":63,"investigatorTitle":64,"investigatorAffiliation":5,"oldNameTitle":25,"oldOrganization":25},"SPONSOR_INVESTIGATOR","François MACH","Professor, MD",[66],{"name":5,"class":6},"100648282","a-pilot-study-to-investigate-platelet-reactivity-in-patients-with-elevated-lipoproteina-and-its-response-to-antiplatelet-therapy-100648282",false,"NCT07720934","A Pilot Study to Investigate Platelet Reactivity in Patients With Elevated Lipoprotein(a) and Its Response to Antiplatelet Therapy","A Pilot Study to Investigate Platelet Reactivity in Patients With Elevated Lipoprotein(a) and Its Response to Antiplatelet Therapy Randomised, Open-Label, Mechanistic Pilot Study With A Crossover Design","Lp(a)-PLAT","Inclusion Criteria:\n\n* Age ≥ 18 years at the time of informed consent.\n* Ability to provide written informed consent in accordance with Swiss Human Research Act (HRA) and ICH-GCP.\n* Documented plasma lipoprotein(a) \\[Lp(a)\\] concentration:\n\nHigh Lp(a) cohort: ≥ 125 nmol\u002FL (approximately ≥ 75th percentile) Low Lp(a) comparator cohort (if applicable): \\\u003C 25-30 nmol\u002FL\n\n* Clinically stable at the time of inclusion, with no acute cardiovascular event within the previous 3 months.\n* Willingness and ability to comply with all study procedures, including blood sampling and study medication intake.\n* For women of childbearing potential: willingness to use adequate contraception during the study period (if applicable according to local ethics requirements).\n\nExclusion Criteria:\n\n* Cardiovascular and bleeding-related conditions Active bleeding or known bleeding disorder. History of hemorrhagic stroke or intracranial hemorrhage. High risk of bleeding as judged by the investigator. Platelet count \\\u003C 100 × 10⁹\u002FL at screening. Known platelet function disorder.\n* Contraindications to study medications Known hypersensitivity or contraindication to aspirin (acetylsalicylic acid) or clopidogrel.\n\nHistory of aspirin-induced asthma, severe NSAID intolerance, or anaphylactic reaction to salicylates.\n\nActive peptic ulcer disease or clinically significant gastrointestinal bleeding within the past 6 months.\n\n\\- Concomitant medications and interference with platelet function Current use of dual antiplatelet therapy (DAPT), oral anticoagulants (e.g., DOACs, vitamin K antagonists), or other potent antithrombotic agents that cannot be safely interrupted.\n\nUse of non-steroidal anti-inflammatory drugs (NSAIDs) within 7 days prior to study entry (unless discontinued per protocol).\n\nUse of P2Y12 inhibitors or aspirin within an insufficient washout period. - Clinical conditions Severe hepatic impairment (ALT\u002FAST \\> 3× ULN) or severe renal impairment (eGFR \\\u003C 30 mL\u002Fmin\u002F1.73 m²).\n\nActive malignancy requiring systemic chemotherapy. Known hematologic disorder affecting platelet function or coagulation. Acute infection or inflammatory condition likely to affect platelet function.\n\n\\- Other exclusions Pregnancy or breastfeeding. Participation in another interventional clinical trial within the last 30 days or 5 half-lives of the investigational product, whichever is longer.\n\nAny condition that, in the opinion of the investigator, would interfere with study participation, compliance, or interpretation of results.",true,"ALL","18 Years",{"count":79,"type":80},60,"ESTIMATED","INTERVENTIONAL",[83],"NA","The Lp(a)-PLAT Study is designed to close a critical evidence gap in cardiovascular prevention for the roughly 20% of the population who carry genetically determined elevations in lipoprotein(a) - a recognised pro-thrombotic and pro-atherosclerotic risk factor. Its objective is to delineate the pro-thrombotic platelet phenotype driven by high Lp(a) levels and to evaluate, through pharmacodynamic comparison, how two standard-of-care antiplatelet strategies - clopidogrel, a P2Y12 ADP-receptor inhibitor, and aspirin, a COX-1 inhibitor - differ in their capacity to attenuate this platelet hyperreactivity.\n\nThis study will provide the first head-to-head mechanistic comparison of clopidogrel versus aspirin on platelet reactivity in patients with elevated plasma levels of Lp(a).",[86],"Cardiovascular Prevention",[88],"Lipoprotein(a)","NOT_YET_RECRUITING","2026-07-17",{"date":92,"type":93},"2026-07-22","ACTUAL",{"date":95,"type":80},"2026-11-01",{"date":97,"type":80},"2027-11-01",{"name":63,"class":6},1]