[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100518650":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":11,"centralContacts":19,"locations":25,"responsibleParty":64,"collaborators":11,"id":66,"slug":67,"hasResults":68,"nctId":69,"briefTitle":70,"officialTitle":70,"acronym":71,"eligibilityCriteria":72,"healthyVolunteers":68,"sex":73,"minAge":74,"maxAge":11,"enrollmentInfo":75,"targetDuration":11,"studyType":78,"phases":79,"briefSummary":81,"conditions":82,"keywords":90,"overallStatus":28,"whyStopped":11,"lastUpdateSubmitDate":91,"lastUpdatePostDateStruct":92,"startDateStruct":95,"completionDateStruct":97,"leadSponsor":99,"locationsCount":100},{"fullName":5,"class":6},"Centre Hospitalier Universitaire, Amiens","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"suspected heparin-induced thrombocytopenia:","EXPERIMENTAL",null,[13],"Biological: blood sample",[15],{"type":16,"name":17,"description":17,"armGroupLabels":18,"otherNames":11},"BIOLOGICAL","blood sample",[9],[20],{"name":21,"role":22,"phone":23,"phoneExt":11,"email":24},"LE GUYADER MAILYS, MD","CONTACT","03.22.08.70.40","leguyader.mailys@chu-amiens.fr",[26],{"facility":27,"status":28,"city":29,"state":11,"zip":30,"country":31,"countryCode":32,"cosmosGeoPoint":33,"geoPoint":38,"contacts":39},"CHU Amiens","RECRUITING","Amiens","80480","France","FR",{"type":34,"coordinates":35},"Point",[36,37],2.3,49.9,{"lat":37,"lon":36},[40,43,46,48,50,52,54,56,58,60,62],{"name":41,"role":22,"phone":42,"phoneExt":11,"email":24},"Maïlys LE GUYADER, MD","03.22.08.70.00",{"name":44,"role":45,"phone":11,"phoneExt":11,"email":11},"ABOU ARAB Osama, Pr","SUB_INVESTIGATOR",{"name":47,"role":45,"phone":11,"phoneExt":11,"email":11},"HAYE Guillaume, MD",{"name":49,"role":45,"phone":11,"phoneExt":11,"email":11},"SALLE Valery, MD",{"name":51,"role":45,"phone":11,"phoneExt":11,"email":11},"CANAPLE Sandrine, MD",{"name":53,"role":45,"phone":11,"phoneExt":11,"email":11},"BASILE Damien, MD",{"name":55,"role":45,"phone":11,"phoneExt":11,"email":11},"Schmidt Jean, MD",{"name":57,"role":45,"phone":11,"phoneExt":11,"email":11},"MALAQUIN Stéphanie, MD",{"name":59,"role":45,"phone":11,"phoneExt":11,"email":11},"SOUDET Simon, MD",{"name":61,"role":45,"phone":11,"phoneExt":11,"email":11},"HERMIDA Alexis, MD",{"name":63,"role":45,"phone":11,"phoneExt":11,"email":11},"Choukroun Gabriel, Pr",{"type":65,"investigatorFullName":11,"investigatorTitle":11,"investigatorAffiliation":11,"oldNameTitle":11,"oldOrganization":11},"SPONSOR","100518650","characterization-and-quantification-of-plateletleukocyte-aggregates-in-patients-with-suspected-heparin-induced-thrombocytopenia-100518650",false,"NCT06033300","Characterization and Quantification of Platelet\u002FLeukocyte Aggregates in Patients With Suspected Heparin-induced Thrombocytopenia","HITSTREAM","Inclusion Criteria:\n\n* Age \\> 18 years\n* Any adult patient suspected of having HIT, with a positive anti-PF4\u002FH antibody test\n* Patient signed consent to study participation\n* Patient with social security coverage\n\nExclusion Criteria:\n\n* All adult patients with suspected HIT and negative anti-PF4\u002FH antibody test.\n* Protected adults (guardianship, under curators) or deprived of liberty","ALL","18 Years",{"count":76,"type":77},200,"ESTIMATED","INTERVENTIONAL",[80],"NA","The investigators would like to analyze platelet\u002Fleukoplak activation, quantify and morphologically characterize these aggregates using in vitro analysis, directly on whole blood from adult patients with suspected HIT. This would enable to better describe the in vivo pathophysiology of the HIT-suspect patient, and eliminate the need for platelet donors to perform the usual confirmatory techniques, whose inter- and intra-individual variability is very high. What's more, the SRA test, evaluated as the reference test, requires the use of radioisotopes and is therefore only carried out in a few biological expertise centers, resulting in a very long delay in the delivery of results. It should also be noted that, in practice, HÉPARINE is immediately stopped in patients with suspected HIT, and they are put on an expensive anticoagulant (DANAPAROIDE SODIQUE or ARGATROBAN) in curative doses until the results of the confirmatory tests are back. In this serious, life-threatening condition, it is essential to have a sensitive, specific test to confirm HIT as quickly as possible. Each patient with suspected HIT (rapid \\>30% reduction in platelet count after initiation of heparin therapy) should have 4 tubes of 3.2% citrated whole blood (2.7ml) collected at the time of suspected HIT (D0) and before any therapeutic switch (or 24 h max after switch). A new sample (4 citrated tubes) will be taken at D4, D7 and D14 during hospitalization, in patients who test positive for anti-PF4\u002FH Ac. All patients with suspected HIT will follow the standard diagnostic pathway, i.e. a screening test (immunological test for anti-PF4\u002Fheparin antibodies, total Ig, ACL TOP, Werfen) followed by a confirmatory test (platelet aggregation on TA-8V, STAGO and\u002For SRA). Doppler ultrasonography of the lower limbs will be performed in HIT-suspect patients with a positive anti-PF4\u002FH antibody test, as currently performed as part of routine care.",[83,84,85,86,87,88,71,89],"Heparin-induced Thrombocytopenia","HIT","Platelet Activation","Platelets","Leukocytes","Platelet\u002FLeukocyte Aggregates","Flow Cytometry",[83],"2025-05-21",{"date":93,"type":94},"2025-05-25","ACTUAL",{"date":96,"type":94},"2023-04-17",{"date":98,"type":77},"2026-04",{"name":5,"class":6},1]