Optimizing the Diagnosis of Heparin Induced Thrombocytopenia
NCT ID: NCT03148912
Last Updated: 2021-02-24
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
UNKNOWN
NA
180 participants
INTERVENTIONAL
2018-11-23
2022-12-31
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
Heparin-Induced Thrombocytopenia Score Card Study
NCT00489437
Characterization and Quantification of Platelet/Leukocyte Aggregates in Patients With Suspected Heparin-induced Thrombocytopenia
NCT06033300
Cold Versus Room Temperature Storage of Platelets for Bleeding in Hematologic Malignancy - a Pilot Trial
NCT05820126
Bleeding In Thrombocytopenia Explained
NCT03505086
Diagnostic of Chronic Thrombocytopenia
NCT04071496
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
NA
SINGLE_GROUP
DIAGNOSTIC
NONE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
diagnostic algorithm
Optimizing the interpretation of the more readily available anti-PF4 assay would reduce the reliance on functional testing/ confirmatory testing (Serotonin Release Assay, SRA) and the number of patients exposed to unnecessary changes in anticoagulation therapy while awaiting the timely functional test results
Diagnostic algorithm
The treating physician will complete an enrollment assessment including the 4T score pretest probability assessment14. All patients will have laboratory testing for HIT anti-PF4 as well as SRA testing. Results of the anti-PF4 assay (OD value) will be available to the treating physician who will be instructed to follow the study diagnostic algorithm
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
Diagnostic algorithm
The treating physician will complete an enrollment assessment including the 4T score pretest probability assessment14. All patients will have laboratory testing for HIT anti-PF4 as well as SRA testing. Results of the anti-PF4 assay (OD value) will be available to the treating physician who will be instructed to follow the study diagnostic algorithm
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
Exclusion Criteria
2. Prior diagnosis of HIT ever;
3. Patient enrolled within preceding 100 days;
4. Functional/ confirmatory platelet activation results available at the time of enrollment;
5. Requiring cardio-pulmonary bypass or percutaneous cardiac angioplasty or any other cardiac or vascular surgery/procedure requiring intra-operative/procedural heparin administration planned within 30 days;
6. Unable to complete study follow up;
7. Unable to obtain consent (or proxy consent from substitute decision maker where applicable);
8. Life expectancy less than 30 days;
9. Greater than 72 hours from clinical suspicion of HIT and/or request for HIT anti-PF4 ELISA testing.
18 Years
ALL
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Ottawa Hospital Research Institute
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Lisa Duffett, MSc, MD
Role: PRINCIPAL_INVESTIGATOR
Ottawa Hospital Research Institute
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
The Ottawa Hospital
Ottawa, Ontario, Canada
Countries
Review the countries where the study has at least one active or historical site.
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
Facility Contacts
Find local site contact details for specific facilities participating in the trial.
References
Explore related publications, articles, or registry entries linked to this study.
Linkins LA, Dans AL, Moores LK, Bona R, Davidson BL, Schulman S, Crowther M. Treatment and prevention of heparin-induced thrombocytopenia: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest. 2012 Feb;141(2 Suppl):e495S-e530S. doi: 10.1378/chest.11-2303.
Raschke RA, Curry SC, Warkentin TE, Gerkin RD. Improving clinical interpretation of the anti-platelet factor 4/heparin enzyme-linked immunosorbent assay for the diagnosis of heparin-induced thrombocytopenia through the use of receiver operating characteristic analysis, stratum-specific likelihood ratios, and Bayes theorem. Chest. 2013 Oct;144(4):1269-1275. doi: 10.1378/chest.12-2712.
Greinacher A, Ittermann T, Bagemuhl J, Althaus K, Furll B, Selleng S, Lubenow N, Schellong S, Sheppard JI, Warkentin TE. Heparin-induced thrombocytopenia: towards standardization of platelet factor 4/heparin antigen tests. J Thromb Haemost. 2010 Sep;8(9):2025-31. doi: 10.1111/j.1538-7836.2010.03974.x.
Warkentin TE. How I diagnose and manage HIT. Hematology Am Soc Hematol Educ Program. 2011;2011:143-9. doi: 10.1182/asheducation-2011.1.143.
Zwicker JI, Uhl L, Huang WY, Shaz BH, Bauer KA. Thrombosis and ELISA optical density values in hospitalized patients with heparin-induced thrombocytopenia. J Thromb Haemost. 2004 Dec;2(12):2133-7. doi: 10.1111/j.1538-7836.2004.01039.x.
Lo GK, Sigouin CS, Warkentin TE. What is the potential for overdiagnosis of heparin-induced thrombocytopenia? Am J Hematol. 2007 Dec;82(12):1037-43. doi: 10.1002/ajh.21032.
Warkentin TE. HIT paradigms and paradoxes. J Thromb Haemost. 2011 Jul;9 Suppl 1:105-17. doi: 10.1111/j.1538-7836.2011.04322.x.
Warkentin TE, Greinacher A, Gruel Y, Aster RH, Chong BH; scientific and standardization committee of the international society on thrombosis and haemostasis. Laboratory testing for heparin-induced thrombocytopenia: a conceptual framework and implications for diagnosis. J Thromb Haemost. 2011 Dec;9(12):2498-500. doi: 10.1111/j.1538-7836.2011.04536.x. No abstract available.
Warkentin TE, Sheppard JI, Moore JC, Sigouin CS, Kelton JG. Quantitative interpretation of optical density measurements using PF4-dependent enzyme-immunoassays. J Thromb Haemost. 2008 Aug;6(8):1304-12. doi: 10.1111/j.1538-7836.2008.03025.x. Epub 2008 May 17.
Linkins LA, Bates SM, Lee AY, Heddle NM, Wang G, Warkentin TE. Combination of 4Ts score and PF4/H-PaGIA for diagnosis and management of heparin-induced thrombocytopenia: prospective cohort study. Blood. 2015 Jul 30;126(5):597-603. doi: 10.1182/blood-2014-12-618165. Epub 2015 Apr 29.
Lo GK, Juhl D, Warkentin TE, Sigouin CS, Eichler P, Greinacher A. Evaluation of pretest clinical score (4 T's) for the diagnosis of heparin-induced thrombocytopenia in two clinical settings. J Thromb Haemost. 2006 Apr;4(4):759-65. doi: 10.1111/j.1538-7836.2006.01787.x.
Thygesen K, Alpert JS, White HD; Joint ESC/ACCF/AHA/WHF Task Force for the Redefinition of Myocardial Infarction. Universal definition of myocardial infarction. J Am Coll Cardiol. 2007 Nov 27;50(22):2173-95. doi: 10.1016/j.jacc.2007.09.011. No abstract available.
Schulman S, Kearon C; Subcommittee on Control of Anticoagulation of the Scientific and Standardization Committee of the International Society on Thrombosis and Haemostasis. Definition of major bleeding in clinical investigations of antihemostatic medicinal products in non-surgical patients. J Thromb Haemost. 2005 Apr;3(4):692-4. doi: 10.1111/j.1538-7836.2005.01204.x.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
IRIS6428
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.