ClotTriever Outcomes (CLOUT) Registry

NCT ID: NCT03575364

Last Updated: 2025-08-26

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

499 participants

Study Classification

OBSERVATIONAL

Study Start Date

2018-09-01

Study Completion Date

2024-07-02

Brief Summary

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Evaluate real world patient outcomes after treatment of acute, subacute, and chronic proximal lower extremity deep vein thrombosis (DVT) with the ClotTriever Thrombectomy System.

Detailed Description

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The CLOUT Registry is a prospective, multi-center, observational registry of subjects with proximal lower extremity DVT treated with the ClotTriever Thrombectomy System. The Registry will collect data on demographics, comorbidities, details from the DVT diagnosis and treatment, and clinical outcomes through 2 years of follow-up.

Conditions

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Deep Vein Thrombosis Leg DVT Chronic DVT of Lower Extremity Acute DVT of Lower Extremity

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Primary Analysis Population

Patients with unilateral acute or subacute DVT of less than or equal to 6 weeks' duration without recent (≤ 3 month) history of venous intervention.

ClotTriever

Intervention Type DEVICE

Thrombectomy

Full Analysis Population

Subjects with proximal lower extremity DVT involving the femoral, common, femoral, iliac veins or inferior vena cava (IVC), alone or in combination.

ClotTriever

Intervention Type DEVICE

Thrombectomy

Interventions

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ClotTriever

Thrombectomy

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Proximal lower extremity DVT involving the femoral, common femoral, iliac veins, or inferior vena cava (IVC), alone or in combination.
* Willing and able to provide informed consent.

Exclusion Criteria

* Prior venous stent in the target venous segment
* IVC aplasia/hypoplasia or other congenital anatomic anomalies of the IVC or iliac veins
* IVC filter in place at the time of the planned index procedure
* Allergy, hypersensitivity, or thrombocytopenia from heparin or iodinated contrast agents, except for mild to moderate contrast allergies for which pretreatment can be used
* Life expectancy less than 1 year
* Chronic non-ambulatory status
* Known hypercoagulable states that, in the opinion of the Investigator, cannot be medically-managed throughout the study period
* Unavailability of a lower extremity venous access site
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Inari Medical

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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David Dexter, MD

Role: PRINCIPAL_INVESTIGATOR

Sentara Vascular Specialists

Robert Beasley, MD

Role: PRINCIPAL_INVESTIGATOR

Icahn School of Medicine at Mount Sinai

Locations

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St. Vincent's East

Birmingham, Alabama, United States

Site Status

Affinity Cardiovascular Specialists

Birmingham, Alabama, United States

Site Status

University of California, Los Angeles

Los Angeles, California, United States

Site Status

Vascular and Interventional Specialists of Orange County

Orange, California, United States

Site Status

University of Colorado, Denver

Denver, Colorado, United States

Site Status

Yale University

New Haven, Connecticut, United States

Site Status

MedStar Health Research Institution

Washington D.C., District of Columbia, United States

Site Status

Manatee Memorial Hospital

Bradenton, Florida, United States

Site Status

Memorial Hospital Jacksonville

Jacksonville, Florida, United States

Site Status

Lakeland Vascular Institute

Lakeland, Florida, United States

Site Status

Mount Sinai Medical Center of Florida

Miami Beach, Florida, United States

Site Status

AdventHealth Tampa

Tampa, Florida, United States

Site Status

Longstreet Clinic

Gainesville, Georgia, United States

Site Status

Wesley Medical Center

Wichita, Kansas, United States

Site Status

Surgical Care Associates

Louisville, Kentucky, United States

Site Status

Lafayette General

Lafayette, Louisiana, United States

Site Status

Opelousas General

Opelousas, Louisiana, United States

Site Status

McLaren Bay Heart and Vascular

Bay City, Michigan, United States

Site Status

Millenium Cardiology

Farmington Hills, Michigan, United States

Site Status

Ascension Genesys Hospital

Grand Blanc, Michigan, United States

Site Status

Beaumont Health

Royal Oak, Michigan, United States

Site Status

University of Missouri

Columbia, Missouri, United States

Site Status

Saint Luke's Hospital of Kansas City

Lee's Summit, Missouri, United States

Site Status

Washington University at St. Louis

St Louis, Missouri, United States

Site Status

Hackensack Meridian

Hackensack, New Jersey, United States

Site Status

Albany Medical College

Albany, New York, United States

Site Status

SUNY, The University at Buffalo

Buffalo, New York, United States

Site Status

NYU Langone Medical Center

New York, New York, United States

Site Status

Columbia University Irving Medical Center

New York, New York, United States

Site Status

Northwell Health

Staten Island, New York, United States

Site Status

The Christ Hospital

Cincinnati, Ohio, United States

Site Status

Mercy Health - The Heart Institute

Fairfield, Ohio, United States

Site Status

Oklahoma Heart Institute

Tulsa, Oklahoma, United States

Site Status

Thomas Jefferson

Philadelphia, Pennsylvania, United States

Site Status

Allegheny Health Network Research Institute

Pittsburgh, Pennsylvania, United States

Site Status

Prisma Health - Upstate

Greenville, South Carolina, United States

Site Status

Methodist Healthcare Foundation

Germantown, Tennessee, United States

Site Status

Houston Healthcare Medical Center

Houston, Texas, United States

Site Status

University of Texas Health Sciences Center - Houston

Houston, Texas, United States

Site Status

Sentara Vascular Specialists

Norfolk, Virginia, United States

Site Status

Providence Sacred Heart

Spokane, Washington, United States

Site Status

Gunderson Health

La Crosse, Wisconsin, United States

Site Status

Aurora St. Luke's Medical Center

Milwaukee, Wisconsin, United States

Site Status

Countries

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United States

References

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Dexter DJ, Kado H, Schor J, Annambhotla S, Olivieri B, Mojibian H, Maldonado TS, Gandhi S, Paulisin J, Bunte MC, Angel W, Roberts J, Veerina K, Abramowitz S, Elmasri F, Hnath J, Jung M, Long D, Sanchez L, Cosme O, Skripochnik E, Lodha A, Shaikh A, King C, Bisharat M, Beasley RE; CLOUT Investigators. Interim outcomes of mechanical thrombectomy for deep vein thrombosis from the All-Comer CLOUT Registry. J Vasc Surg Venous Lymphat Disord. 2022 Jul;10(4):832-840.e2. doi: 10.1016/j.jvsv.2022.02.013. Epub 2022 Feb 24.

Reference Type BACKGROUND
PMID: 35218955 (View on PubMed)

Maldonado TS, Dexter DJ, Kado H, Schor J, Annambhotla S, Mojibian H, Beasley RE; CLOUT Registry Investigators. Outcomes from the ClotTriever Outcomes Registry show symptom duration may underestimate deep vein thrombus chronicity. J Vasc Surg Venous Lymphat Disord. 2022 Nov;10(6):1251-1259. doi: 10.1016/j.jvsv.2022.04.015. Epub 2022 Jun 14.

Reference Type BACKGROUND
PMID: 35714903 (View on PubMed)

Dexter D, Kado H, Shaikh A, Schor J, Annambhotla S, Zybulewski A, Paulisin J, Bisharat M, Mouawad NJ, Bunte MC, Maldonado T, Skripochnik E, Raskin A, Gandhi S, Ichinose E, Beasley R, Mojibian H. Safety and Effectiveness of Mechanical Thrombectomy From the Fully Enrolled Multicenter, Prospective CLOUT Registry. J Soc Cardiovasc Angiogr Interv. 2023 Feb 23;2(2):100585. doi: 10.1016/j.jscai.2023.100585. eCollection 2023 Mar-Apr.

Reference Type BACKGROUND
PMID: 39129803 (View on PubMed)

Abramowitz SD, Kado H, Schor J, Annambhotla S, Mojibian H, Marino AG, Maldonado TS, Gandhi S, Paulisin J, Bunte MC, Angel W, Roberts J, Veerina K, Long D, Elmasri F, Shaikh A, Beasley RE, Dexter D; CLOUT Investigators. Six-Month Deep Vein Thrombosis Outcomes by Chronicity: Analysis of the Real-World ClotTriever Outcomes Registry. J Vasc Interv Radiol. 2023 May;34(5):879-887.e4. doi: 10.1016/j.jvir.2022.12.480.

Reference Type BACKGROUND
PMID: 37105663 (View on PubMed)

Shaikh A, Zybulewski A, Paulisin J, Bisharat M, Mouawad NJ, Raskin A, Ichinose E, Abramowitz S, Lindquist J, Azene E, Shah N, Nguyen J, Cockrell J, Khalsa B, Khetarpaul V, Murrey DA Jr, Veerina K, Skripochnik E, Maldonado TS, Bunte MC, Annambhotla S, Schor J, Kado H, Mojibian H, Dexter D; CLOUT Investigators. Six-Month Outcomes of Mechanical Thrombectomy for Treating Deep Vein Thrombosis: Analysis from the 500-Patient CLOUT Registry. Cardiovasc Intervent Radiol. 2023 Nov;46(11):1571-1580. doi: 10.1007/s00270-023-03509-8. Epub 2023 Aug 14.

Reference Type BACKGROUND
PMID: 37580422 (View on PubMed)

Abramowitz S, Marko X, Willis VC, Mills C, Black SA. Association Between 30 Day Villalta Scores and Long Term Post-Thrombotic Syndrome Incidence and Severity Following Acute Deep Vein Thrombosis. Eur J Vasc Endovasc Surg. 2024 Jan;67(1):167-168. doi: 10.1016/j.ejvs.2023.09.045. Epub 2023 Oct 5. No abstract available.

Reference Type BACKGROUND
PMID: 37802419 (View on PubMed)

Bisharat MB, Ichinose EJ, Veerina KK, Khetarpaul V, Azene EM, Plotnik AN, Hnath J, Trestman E, Harlin SA, Bhat A, Li S, Long GW, O'Connor D, Winokur RS, Zia S, Dexter DJ. One-Year Clinical Outcomes Following Mechanical Thrombectomy for Deep Vein Thrombosis: A CLOUT Registry Analysis. J Soc Cardiovasc Angiogr Interv. 2024 Feb 15;3(3Part A):101307. doi: 10.1016/j.jscai.2024.101307. eCollection 2024 Mar.

Reference Type BACKGROUND
PMID: 39131784 (View on PubMed)

Abramowitz S, Bunte MC, Maldonado TS, Skripochnik E, Gandhi S, Mouawad NJ, Mojibian H, Schor J, Dexter DJ; CLOUT study collaborators. Mechanical Thrombectomy vs. Pharmacomechanical Catheter Directed Thrombolysis for the Treatment of Iliofemoral Deep Vein Thrombosis: A Propensity Score Matched Exploratory Analysis of 12 Month Clinical Outcomes. Eur J Vasc Endovasc Surg. 2024 Apr;67(4):644-652. doi: 10.1016/j.ejvs.2023.11.017. Epub 2023 Nov 21.

Reference Type BACKGROUND
PMID: 37981003 (View on PubMed)

Abramowitz S, Shaikh A, Mojibian H, Mouawad NJ, Bunte MC, Skripochnik E, Lindquist J, Elmasri F, Khalsa B, Bhat A, Nguyen J, Shah N, Noor SS, Murrey D, Gandhi S, Raskin A, Schor J, Dexter DJ. Comparison of anticoagulation vs mechanical thrombectomy for the treatment of iliofemoral deep vein thrombosis. J Vasc Surg Venous Lymphat Disord. 2024 Jul;12(4):101825. doi: 10.1016/j.jvsv.2024.101825. Epub 2024 Jan 24.

Reference Type BACKGROUND
PMID: 38278173 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Related Links

Access external resources that provide additional context or updates about the study.

http://doi.org/10.1016/j.jvir.2022.12.480

Six-Month Deep Vein Thrombosis Outcomes by Chronicity: Analysis of the Real-World ClotTriever Outcomes Registry.

https://doi.org/10.1016/j.jscai.2023.100585

Safety and Effectiveness of Mechanical Thrombectomy From the Fully Enrolled Multicenter, Prospective CLOUT Registry.

https://doi.org/10.1016/j.jvsv.2022.02.013

Interim outcomes of mechanical thrombectomy for deep vein thrombosis from the All-Comer CLOUT Registry.

https://doi.org/10.1016/j.jvsv.2022.04.015

Outcomes from the ClotTriever Outcomes Registry show symptom duration may underestimate deep vein thrombus chronicity.

http://doi.org/10.1007/s00270-023-03509-8

Six-Month Outcomes of Mechanical Thrombectomy for Treating Deep Vein Thrombosis: Analysis from the 500-Patient CLOUT Registry.

https://doi.org/10.1016/j.ejvs.2023.09.045

Mechanical Thrombectomy vs. Pharmacomechanical Catheter Directed Thrombolysis for the Treatment of Iliofemoral Deep Vein Thrombosis: A Propensity Score Matched Exploratory Analysis of 12 Month Clinical Outcomes

https://doi.org/10.1016/j.ejvs.2023.09.045

Association Between 30 Day Villalta Scores and Long Term Post-Thrombotic Syndrome Incidence and Severity Following Acute Deep Vein Thrombosis

https://pubmed.ncbi.nlm.nih.gov/38278173/

Comparison of anticoagulation vs mechanical thrombectomy for the treatment of iliofemoral deep vein thrombosis.

https://doi.org/10.1016/j.jscai.2024.101307

One-Year Clinical Outcomes Following Mechanical Thrombectomy for Deep Vein Thrombosis: A CLOUT Registry Analysis

Other Identifiers

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18-001

Identifier Type: -

Identifier Source: org_study_id

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