- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00798525
Argatroban Versus Lepirudin in Critically Ill Patients (ALiCia)
Argatroban Versus Lepirudin in Critically Ill Patients - A Randomized Double-blind Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Critically ill patients are at increased risk to develop deep vein thrombosis due to immobilisation and/or the underlying disease. Usually, heparin is used for anticoagulation in these patients. However, a serious complication of heparin therapy is heparin-induced thrombocytopenia type II (HIT). HIT is an immune-mediated syndrome caused by antibodies directed against the heparin-PF4-complex, which bind to platelets via the Fc part, thereby activating platelets causing aggregation and hypercoagulability. Thus, with HIT the risk of thrombosis and organ damage paradoxically even increases during heparin administration. HIT is associated with significant morbidity and mortality if unrecognized. Therefore, patients, who develop thrombocytopenia and/or thrombosis during heparin therapy are suspicious for HIT and have to receive alternative anticoagulants2.
The direct thrombin inhibitor lepirudin (Refludan®) is equally effective as heparin in prevention of deep vein thrombosis and lung embolism3. The elimination half life of lepirudin averages 60 min, but in renal failure it may increase up to 48 hours. Critically ill patients often develop acute renal failure requiring continuous renal replacement therapy. Thus, if lepirudin is used in these patients, intensive dose adjustment is necessary to avoid accumulation and severe bleeding. In contrast, effective anticoagulation is needed to prevent clot formation within the extracorporeal circuit, as clotting substantially increases the patients´ risks and costs of therapy.
Argatroban (Argatra®), another direct thrombin inhibitor, has recently been shown to be safe and effective in prevention of deep vein thrombosis in patients with HIT. Interestingly, argatroban is eliminated by hepatic metabolism. Therefore, no initial dose adjustment is necessary in patients with renal failure. Preliminary reports document the feasibility of argatroban for anticoagulation during haemodialysis. Observational data in patients undergoing continuous haemodialysis suggest that life time of filters during argatroban anticoagulation is not limited due to clot formation. Thus, argatroban would be safer and more effective than lepirudin in critically ill patients requiring continuous renal replacement therapy.
Therefore, we propose a prospective randomized double-blinded trial to test the hypotheses that argatroban significantly increases efficacy and safety of renal replacement therapy measured as life time of haemodialysis filters as compared to lepirudin
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
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Düsseldorf, Germany, 40225
- Universitätsklinikum Düsseldorf Klinik für Anästhesiologie
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Thrombocytopenia suspicious for HIT with decrease in platelet count >50% from baseline obtained at hospital admission
- 4 T´s score for HIT probability >3 AND/OR positive ELISA for HIT
- Age ≥18 years
- Informed consent (if applicable)
Exclusion Criteria:
- Transient thrombocytopenia due to intraoperative bleeding
- Active bleeding
- Intracranial operations
- Liver dysfunction with spontaneous aPTT> 60 sec.
- History of adverse events or sensitivity against study drugs
- Pregnancy
- Age<18 years
- Preexisting psychiatric/neurologic disorders with long-term inability to provide informed consent
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Active Comparator: PR1
Patients treated with Argatroban (Argatra®), a direct thrombin inhibitor
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Argatra (Argatroban) will be diluted to 0.6 mg/ml and 0.5 µg/kg/min will be administered continuously in patients without liver disfunction.
In patients with liver disfunction, defined by a bilirubin of > 4mg/dl, argatroban will be administered as a continuous infusion of 0,25 µg/kg/min with a final concentration of 0,3 mg/ml.
Other Names:
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Active Comparator: PR2
Patients treated with Lepirudin (Refludan®), a direct thrombin inhibitor
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Refludan (Lepirudin) will be diluted to a final concentration of 0.1mg/ml and initiated as a continuous infusion of 5µg/kg/h in patients with continuous renal replacement therapy.
In patients with moderate renal impairment (Creatinine ≥1,3 mg/dl) a final concentration 0,2 mg/ml of will be used to provide continuous infusion of 10 µg/kg/h.
Patients without renal impairment (Creatinine < 1,3 mg/dl) will receive a continuous infusion of 50 µg/kg/h by a final concentration of 1 mg/ml of Lepirudin.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Mean running time of a maximum of two consecutive haemodialysis circuits
Time Frame: seven days starting at time of HIT suspicion
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seven days starting at time of HIT suspicion
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Incidence of bleeding, transfusion requirements, thromboembolic events, anaphylactic reactions, and SUSARs, length of hospital stay, mortality, time till target aPTT
Time Frame: seven days starting at time of HIT suspicion
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seven days starting at time of HIT suspicion
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Collaborators and Investigators
Investigators
- Principal Investigator: Peter Kienbaum, MD, Uniklinik Düsseldorf, Klinik für Anästhesiologie
Publications and helpful links
General Publications
- Tsujimoto H, Tsujimoto Y, Nakata Y, Fujii T, Takahashi S, Akazawa M, Kataoka Y. Pharmacological interventions for preventing clotting of extracorporeal circuits during continuous renal replacement therapy. Cochrane Database Syst Rev. 2020 Dec 14;12(12):CD012467. doi: 10.1002/14651858.CD012467.pub3.
- Beiderlinden M, Werner P, Bahlmann A, Kemper J, Brezina T, Schafer M, Gorlinger K, Seidel H, Kienbaum P, Treschan TA. Monitoring of argatroban and lepirudin anticoagulation in critically ill patients by conventional laboratory parameters and rotational thromboelastometry - a prospectively controlled randomized double-blind clinical trial. BMC Anesthesiol. 2018 Feb 9;18(1):18. doi: 10.1186/s12871-018-0475-y.
- Treschan TA, Schaefer MS, Geib J, Bahlmann A, Brezina T, Werner P, Golla E, Greinacher A, Pannen B, Kindgen-Milles D, Kienbaum P, Beiderlinden M. Argatroban versus Lepirudin in critically ill patients (ALicia): a randomized controlled trial. Crit Care. 2014 Oct 25;18(5):588. doi: 10.1186/s13054-014-0588-8.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Disease Attributes
- Hematologic Diseases
- Blood Platelet Disorders
- Critical Illness
- Thrombocytopenia
- Molecular Mechanisms of Pharmacological Action
- Enzyme Inhibitors
- Fibrinolytic Agents
- Fibrin Modulating Agents
- Platelet Aggregation Inhibitors
- Protease Inhibitors
- Antithrombins
- Serine Proteinase Inhibitors
- Anticoagulants
- Argatroban
- Lepirudin
Other Study ID Numbers
- 2006-003122-28
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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