- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03292666
Anticoagulation Length of ThErapy and Risk of New Adverse evenTs In Venous thromboEmbolism Study (ALTERNATIVE)
The Comparative Effectiveness of Warfarin and New Oral Anticoagulants for the Extended Treatment of Venous Thromboembolism
Study Overview
Status
Intervention / Treatment
Detailed Description
Venous thromboembolism (VTE) is a leading cause of cardiovascular death and continues to be a major public health issue in the United States. The cornerstone of current VTE treatment is anticoagulation, typically given for ≥ 3 months during the acute phase of thrombosis. Afterwards, extended-duration anticoagulation can be considered for selected higher-risk patients. Treatment options for VTE have expanded substantially in recent years, most notably through the availability of direct oral anticoagulants (DOACs). Yet there are many remaining gaps in the understanding of how to manage VTE to maximize net clinical benefit.
The long-range objective of this project is to reduce the morbidity and mortality associated with VTE in adults and evaluate contemporary treatment patterns and long-term outcomes after VTE. This initial phase of the study will assemble an observational cohort of adults with VTE diagnosed between 2010-2018. Study subjects will be identified from two integrated healthcare delivery systems (Kaiser Permanente Northern California and Kaiser Permanente Southern California) and followed until December, 2019. Data will be obtained from administrative and electronic health records, supplemented with a cross-sectional patient survey.
The first two aims will be to compare the rates of recurrent VTE and hemorrhage between (1) extended anticoagulation vs. no extended anticoagulation after VTE; and (2) DOAC vs. warfarin treatment of VTE. The third specific aim is to describe patient-defined outcomes in adults with VTE in the current treatment era. This will be accomplished by surveying subjects with VTE to collect data on generic and disease-specific quality-of-life as well as on anticoagulant treatment satisfaction. Combining clinical, outcome, and survey data with administrative data will create a contemporary cohort of VTE patients that can serve as a rich source of information for use in facilitating comparative effectiveness research addressing optimal VTE management within real-world practice settings.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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California
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Oakland, California, United States, 94612
- Kaiser Permanente Northern California
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Pasadena, California, United States, 91101
- Kaiser Permanente Southern California
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Adults (age ≥ 18 years) enrolled in Kaiser Permanente Northern California or Kaiser Permanente Southern California
- Index VTE event, defined as an incident clinical encounter (inpatient, emergency department, or outpatient) with a primary or secondary diagnosis of VTE during the time period January 1, 2010 to December 31, 2018
- Anticoagulant prescription (oral or parenteral) filled after index VTE discharge/encounter date
- Continuous outpatient anticoagulant therapy for ≥ 3 months from fill date of prescription
- Continuous pharmacy benefits and health plan membership for at least 12 months before the index VTE event date
Exclusion Criteria:
- Incomplete information on age and sex
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Extended anticoagulation
Patients with acute VTE treated with oral anticoagulants for > 3 months
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Oral anticoagulants used to treat or prevent venous thromboembolism
Other Names:
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No extended anticoagulation
Patients with acute VTE treated with oral anticoagulants for no longer than 3 months
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Recurrent venous thromboembolism
Time Frame: From the index VTE date until death, disenrollment from the health system, or the end of the planned outcome assessment (December 31, 2019)
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Recurrent VTE will be defined as a new VTE encounter that is occurs after the index VTE event date.
The encounter must represent a new diagnosis or symptomatology that is attributable to VTE.
|
From the index VTE date until death, disenrollment from the health system, or the end of the planned outcome assessment (December 31, 2019)
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Hospitalization for hemorrhage
Time Frame: From the index VTE date until death, disenrollment from the health system, or the end of the planned outcome assessment (December 31, 2019)
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Hospitalization for extracranial or intracranial hemorrhage
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From the index VTE date until death, disenrollment from the health system, or the end of the planned outcome assessment (December 31, 2019)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Death
Time Frame: From the index VTE date until disenrollment from the health system or the end of the planned outcome assessment (December 31, 2019)
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All-cause death
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From the index VTE date until disenrollment from the health system or the end of the planned outcome assessment (December 31, 2019)
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Health-related quality of life
Time Frame: years 2018 and 2019
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Generic health-related quality of life, measured according to the 36 item Short Form Survey
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years 2018 and 2019
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Anticoagulant treatment satisfaction
Time Frame: years 2018 and 2019
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Anti-Clot Treatment Satisfaction Scale
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years 2018 and 2019
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Collaborators and Investigators
Investigators
- Principal Investigator: Margaret C. Fang, MD, University of California, San Francisco
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
- Hematologic Diseases
- Hemorrhagic Disorders
- Embolism and Thrombosis
- Hemostatic Disorders
- Blood Coagulation Disorders
- Thromboembolism
- Venous Thromboembolism
- Molecular Mechanisms of Pharmacological Action
- Enzyme Inhibitors
- Protease Inhibitors
- Factor Xa Inhibitors
- Antithrombins
- Serine Proteinase Inhibitors
- Rivaroxaban
- Dabigatran
- Apixaban
- Edoxaban
- Warfarin
- Anticoagulants
Other Study ID Numbers
- NOACs-1510-32651
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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