REGN7508 Versus Apixaban and Enoxaparin for Thromboprophylaxis After Total Knee Arthroplasty in Adults

NCT ID: NCT07015905

Last Updated: 2025-11-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

2000 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-06-25

Study Completion Date

2027-05-12

Brief Summary

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This study is researching an experimental drug called REGN7508 (called "study drug"). The study is focused on adults undergoing elective, unilateral (one side) total knee replacement surgery.

The aim of the study is to see how effective the study drug is at preventing venous thromboembolism (VTE) and other related diseases after total knee replacement surgery.

The study is looking at several other research questions, including:

* What side effects may happen from taking the study drug
* How much study drug is in the blood at different times
* Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects)

Detailed Description

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Conditions

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Venous Thromboembolism (VTE)

Keywords

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Unilateral Total Knee Arthroplasty (TKA) Factor XI (FXI)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Investigators Outcome Assessors

Study Groups

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IV REGN7508

Group Type EXPERIMENTAL

REGN7508

Intervention Type DRUG

Administered per the protocol

IV Placebo, SC REGN7508

Group Type EXPERIMENTAL

REGN7508

Intervention Type DRUG

Administered per the protocol

Placebo

Intervention Type DRUG

Administered per the protocol

IV Placebo, apixaban

Group Type ACTIVE_COMPARATOR

Apixaban

Intervention Type DRUG

Administered per the protocol

Placebo

Intervention Type DRUG

Administered per the protocol

IV Placebo, enoxaparin

Group Type ACTIVE_COMPARATOR

Enoxaparin

Intervention Type DRUG

Administered per the protocol

Placebo

Intervention Type DRUG

Administered per the protocol

Interventions

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REGN7508

Administered per the protocol

Intervention Type DRUG

Apixaban

Administered per the protocol

Intervention Type DRUG

Enoxaparin

Administered per the protocol

Intervention Type DRUG

Placebo

Administered per the protocol

Intervention Type DRUG

Other Intervention Names

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Inhixa

Eligibility Criteria

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Inclusion Criteria

1. Is undergoing a primary elective unilateral TKA
2. Is in good health based on laboratory safety testing as described in the protocol
3. Body weight ≤130 kg at screening visit as described in the protocol

Exclusion Criteria

1. Any condition that, as assessed by the investigator, may confound the results of the study or pose an additional risk to the participant by study participation
2. History of bleeding in the 6 months prior to randomization requiring hospitalization or transfusion as described in the protocol
3. History of thromboembolic disease or thrombophilia
4. History of major surgery, including brain, spinal, or ocular, or major trauma within approximately the past 6 months prior to randomization
5. Has an estimated Glomerular Filtration Rate (GFR) of \<30 mL/min/1.73 m2 at the screening visit as described in the protocol
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Regeneron Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Trial Management

Role: STUDY_DIRECTOR

Regeneron Pharmaceuticals

Locations

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CARI Clinical Trials

Riverside, California, United States

Site Status RECRUITING

Denver Metro Orthopedics, P.C. Englewood Location

Englewood, Colorado, United States

Site Status RECRUITING

Gulfcoast Research Institute

Sarasota, Florida, United States

Site Status RECRUITING

Phoenix Clinical Research

Tamarac, Florida, United States

Site Status RECRUITING

Sinai Hospital of Baltimore, Inc.

Baltimore, Maryland, United States

Site Status RECRUITING

HD Research - First Surgical Hospital

Bellaire, Texas, United States

Site Status RECRUITING

Flourish Research - San Antonio (Formerly Clinical Trials of Texas)

San Antonio, Texas, United States

Site Status RECRUITING

National Hospital Organization Osaka Minami Medical Center

Kawachi-Nagano, Osaka, Japan

Site Status RECRUITING

Hospital of Traumatology and Orthopaedics

Riga, , Latvia

Site Status RECRUITING

Countries

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United States Japan Latvia

Central Contacts

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Clinical Trials Administrator

Role: CONTACT

Phone: 844-734-6643

Email: [email protected]

Other Identifiers

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2025-520478-20-00

Identifier Type: CTIS

Identifier Source: secondary_id

R7508-DVT-24116

Identifier Type: -

Identifier Source: org_study_id