- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04444700
A Pragmatic Randomized Controlled Trial of Therapeutic Anticoagulation Versus Standard Care as a Rapid Response to (SARS-CoV-2) COVID-19 Pandemic (RAPID-BRAZIL)
Utilização da Enoxaparina em Dose Anticoagulante em Pacientes Hospitalizados Com síndrome respiratória Aguda Grave Por COVID-19
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
2-arm, parallel, pragmatic, multi-centre, open-label randomized controlled trial to determine the effect of therapeutic anticoagulation, with low molecular weight heparin or unfractionated heparin (high dose nomogram), compared to standard care in hospitalized patients with COVID-19 and an elevated D-dimer on the composite outcome of intensive care unit (ICU) admission, non-invasive positive pressure ventilation, invasive mechanical ventilation or death at 28 days. Eligible participants will be randomized to one of two treatment regimens, receiving either therapeutic anticoagulation or standard care until discharged from hospital, death or day 28.
The primary composite outcome of ICU admission, non-invasive positive pressure ventilation, invasive mechanical ventilation, or all-cause death up to 28 days.
Key secondary outcomes between study arms up to day 28 include:
- All-cause death
- Composite outcome of ICU admission or all-cause death
- Composite outcome of mechanical ventilation or all-cause death
- Major bleeding as defined by the ISTH Scientific and Standardization Committee (ISTH-SSC) recommendation
- Number of participants who received red blood cell transfusion (≥1 unit)
- Number of participants with transfusion of platelets, frozen plasma, prothrombin complex concentrate, cryoprecipitate and/or fibrinogen concentrate
- Renal replacement therapy;
- Number of hospital-free days alive
- Number of ICU-free days alive
- Number of ventilator-free days alive
- Number of organ support-free days alive
- Number of participants with venous thromboembolism
- Number of participants with arterial thromboembolism
- Number of participants with heparin induced thrombocytopenia
- Changes in D-dimer up to day 3
The treatment arm is therapeutic anticoagulation with low molecular weight heparin (LMWH) or unfractionated heparin (UFH, high dose nomogram). The choice of LMWH versus UFH will be at the clinician's discretion. LMWH options include: Tinzaparin, Enoxaparin, or Dalteparin. UFH will be administered using a weight-based nomogram with titration according to the center-specific protocol. Therapeutic anticoagulation will be administered until discharged from hospital, 28 days or death. If the patient is admitted to the ICU or requiring ventilatory support, we recommend continuation of the allocated treatment as long as the treating physician is in agreement. The standard care arm is the administration of LMWH, UFH or fondaparinux at thromboprophylactic doses in the absence of contraindication.
No study specific bloodwork will be ordered aside from a single D-dimer test (if not collected through standard of care) up to and including day 3 after randomization for all participants in both study arms. In those on the active treatment arm who are receiving UFH, the aPTT or UFH anti-Xa will be drawn according to local institutional UFH nomogram protocol guidance. All laboratory results will be collected from standard of care from admission to hospital discharge, death or 28 days, where available. An optional biobanking component will collect blood at baseline and 2 follow up time points.
This study will immediately impact the clinical care of patients with severe COVID-19 internationally, whether the findings are positive or negative, as COVID-19 coagulopathy is a highly prevalent complication of severe COVID-19 and may precede the respiratory manifestations that characterize it.
Study Type
Enrollment (Actual)
Phase
- Phase 3
Contacts and Locations
Study Locations
-
-
SP
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São Paulo, SP, Brazil, 05402-000
- Hospital das Clinicas da FMUSP
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
The inclusion criteria are:
- laboratory confirmed diagnosis of SARS-CoV-2 via reverse transcriptase polymerase chain reaction as per the World Health Organization protocol or by nucleic acid based isothermal amplification.Positive test prior to hospital admission OR within first 5 days (i.e. 120 hours) after hospital admission;
- admitted to hospital for COVID-19;
- one D-dimer value above ULN (5 days (i.e. 120 hours) of hospital admission) and either: a) D-Dimer ≥2 times ULN; or b) D-dimer above ULN and oxygen saturation ≤ 93% on room air;
- ≥18 years of age;
- informed consent from the patient (or legally authorized substitute decision maker).
The exclusion criteria are:
- pregnancy;
- hemoglobin <80 g/L in the last 72 hours;
- platelet count <50 x 10^9/L in the last 72 hours;
- known fibrinogen <1.5 g/L (if testing deemed clinically indicated by the treating physician prior to the initiation of anticoagulation);
- known INR >1.8 (if testing deemed clinically indicated by the treating physician prior to the initiation of anticoagulation);
- patient already on intermediate dosing of LMWH that cannot be changed (determination of what constitutes an intermediate dose is to be at the discretion of the treating clinician taking the local institutional thromboprophylaxis protocol for high risk patients into consideration);
- patient already on therapeutic anticoagulation at the time of screening (low or high dose nomogram UFH, LMWH, warfarin, direct oral anticoagulant (any dose of dabigatran, apixaban, rivaroxaban, edoxaban);
- patient on dual antiplatelet therapy, when one of the agents cannot be stopped safely;
- known bleeding within the last 30 days requiring emergency room presentation or hospitalization;
- known history of a bleeding disorder of an inherited or active acquired bleeding disorder;
- known history of heparin-induced thrombocytopenia;
- known allergy to UFH or LMWH;
- admitted to the intensive care unit at the time of screening;
- treated with non-invasive positive pressure ventilation or invasive mechanical ventilation at the time of screening (of note: high flow oxygen delivery via nasal cannula is acceptable and is not an exclusion criterion).
- imminent death according to the judgement of the most responsible physician
- enrollment in another clinical trial of antithrombotic therapy involving pre-intensive care unit hospitalized patients
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Therapeutic anticoagulation
Therapeutic anticoagulation with LMWH or UFH (high dose nomogram).
The choice of LMWH versus UFH will be at the clinician's discretion and dependent on local institutional supply.
Therapeutic anticoagulation will be administered until discharged from hospital, 28 days or death.
If the patient is admitted to the ICU or requiring ventilatory support, we recommend continuation of the allocated treatment as long as the treating physician is in agreement.
|
The choice of low molecular weight heparin (LMWH) versus unfractionated heparin (UFH) will be at the clinician's discretion.
LMWH options include: Tinzaparin, Enoxaparin or Dalteparin.
UFH will be administered using a weight-based nomogram with titration according to center-specific institutional protocol.
|
NO_INTERVENTION: Standard care
Administration of LMWH, UFH or fondaparinux at thromboprophylactic doses for acutely ill hospitalized medical patients, in the absence of contraindication, is considered standard care.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Composite outcome of ICU admission (yes/no), non-invasive positive pressure ventilation (yes/no), invasive mechanical ventilation (yes/no), or all-cause death (yes/no) up to 28 days.
Time Frame: up to 28 days
|
Composite outcome of ICU admission (yes/no), non-invasive positive pressure ventilation (yes/no), invasive mechanical ventilation (yes/no), or all-cause death (yes/no) up to 28 days.
|
up to 28 days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
All-cause death
Time Frame: Up to 28 days
|
All-cause death
|
Up to 28 days
|
Composite outcome of ICU admission or all-cause death
Time Frame: Up to 28 days
|
Composite outcome of ICU admission or all-cause death
|
Up to 28 days
|
Composite outcome of mechanical ventilation or all-cause death
Time Frame: Up to 28 days
|
Composite outcome of mechanical ventilation or all-cause death
|
Up to 28 days
|
Major bleeding
Time Frame: Up to 28 days
|
Major bleeding as defined by the ISTH Scientific and Standardization Committee (ISTH-SSC) recommendation
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Up to 28 days
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Red blood cell transfusion
Time Frame: Up to 28 days
|
Red Blood Cell transfusion (greater than or equal to 1 unit)
|
Up to 28 days
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Transfusion of platelets, frozen plasma, prothrombin complex concentrate, cryoprecipiate and/or fibrinogen concentrate
Time Frame: Up to 28 days
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Transfusion of platelets, frozen plasma, prothrombin complex concentrate, cryoprecipiate and/or fibrinogen concentrate
|
Up to 28 days
|
Renal replacement therapy
Time Frame: Up to 28 days
|
Renal replacement therapy defined as continuous renal replacement therapy or intermittent hemodialysis
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Up to 28 days
|
Hospital-free days alive up to day 28
Time Frame: Up to 28 days
|
Hospital-free days alive up to day 28
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Up to 28 days
|
ICU-free days alive up to day 28
Time Frame: Up to 28 days
|
ICU-free days alive up to day 28
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Up to 28 days
|
Ventilator-free days alive up to day 28
Time Frame: Up to 28 days
|
Ventilator-free days alive up to day 28
|
Up to 28 days
|
Organ support-free days alive up to day 28
Time Frame: Up to 28 days
|
Organ support-free days alive up to day 28
|
Up to 28 days
|
Venous thromboembolism
Time Frame: Up to 28 days
|
Venous thromboembolism
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Up to 28 days
|
Arterial thromboembolism
Time Frame: Up to 28 days
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Arterial thromboembolism
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Up to 28 days
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Heparin induced thrombocytopenia
Time Frame: Up to 28 days
|
Heparin induced thrombocytopenia
|
Up to 28 days
|
Changes in D-dimer up to day 3
Time Frame: Up to day 3
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D-dimer
|
Up to day 3
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Collaborators and Investigators
Investigators
- Principal Investigator: Peter Juni, MD, FESC, St Michael's Hospital, Li Ka Shing Knowledge Institute, University of Toronto
- Principal Investigator: Elnara M Negri, MD, PhD, Laboratório de Investigação Médica da FMUSP
- Principal Investigator: Heraldo P de Souza, MD, PhD, Disciplina de Emergências Clínicas, Hospital das Clínicas da FMUSP
- Principal Investigator: Hassan Rahhal, MD, Disciplina de Emergências Clínicas, Hospital das Clínicas da FMUSP
Publications and helpful links
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Cardiovascular Diseases
- Vascular Diseases
- Coronaviridae Infections
- Nidovirales Infections
- RNA Virus Infections
- Virus Diseases
- Infections
- Respiratory Tract Infections
- Respiratory Tract Diseases
- Hematologic Diseases
- Hemorrhagic Disorders
- Embolism and Thrombosis
- Severe Acute Respiratory Syndrome
- Coronavirus Infections
- Hemostatic Disorders
- Blood Coagulation Disorders
- Thromboembolism
- Venous Thromboembolism
Other Study ID Numbers
- CAAE: 33109220.7.0000.0068
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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