A Trial to Learn How Well REGN9933 and REGN7508 Work for Preventing Blood Clots, and How Safe They Are, in Adults Who Have a Peripherally Inserted Central Catheter (PICC)

NCT ID: NCT06299111

Last Updated: 2025-11-06

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

PHASE2

Total Enrollment

195 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-09-20

Study Completion Date

2026-06-08

Brief Summary

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This study is researching 2 different experimental drugs called REGN9933 and REGN7508 (called "study drugs"). The study is focused on adults undergoing a placement of a catheter in the vein, also called a 'PICC line'.

The aim of the study is to see how effective the study drug is at preventing venous thromboembolism (VTE) and other related disease after catheter placement.

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

Keywords

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Anti-factor XI (FXI) monoclonal antibody Venous Thromboembolism Peripherally inserted central catheter

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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REGN9933

Randomized 1:1:1

Group Type EXPERIMENTAL

REGN9933

Intervention Type DRUG

Intravenous (IV) single dose administered

REGN7508

Randomized 1:1:1

Group Type EXPERIMENTAL

REGN7508

Intervention Type DRUG

IV single dose administered

Placebo

Randomized 1:1:1

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

IV single dose administered

Interventions

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REGN9933

Intravenous (IV) single dose administered

Intervention Type DRUG

REGN7508

IV single dose administered

Intervention Type DRUG

Placebo

IV single dose administered

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. PICC is clinically indicated for at least 14 days and is anticipated to remain in place for at least 14 days
2. Eastern Cooperative Oncology Group (ECOG) Performance Status ≤2 or equivalent functional status as described in the protocol
3. Body weight ≥45 kg and ≤130 kg during the screening period
4. International normalized ratio (INR) and aPTT values at or below the upper limit of normal as defined by the local lab during the screening period
5. Platelet count ≥100 x 10\^9/L during the screening period as described in the protocol

Exclusion Criteria

1. Unsuccessful PICC placement or any other complication associated with this procedure that in the opinion of the study investigator may present any safety concerns to the participant
2. History of prior venous thrombosis in the arm in which the PICC is to be placed
3. Peripheral catheter(s) in the same arm in which the PICC is to be placed or expected need for peripheral catheter(s) placement in the same arm the PICC is to be placed as described in the protocol
4. History of known thromboembolic disease or thrombophilia
5. Participants requiring therapeutic anticoagulation and/or antiplatelet therapy as described in the protocol
6. Expected to receive cancer therapy or other medication associated with a prior episode of Grade 4 thrombocytopenia as described in the protocol
7. Any history of intracranial or intraocular bleeding, excessive operative or post-operative bleeding, traumatic spinal or epidural anesthesia, or history of bleeding diathesis (such as but not limited to Hemophilia A or B, von Willebrand's disease, fibrinogen deficiency, and other inherited or acquired bleeding disorders) 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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Cedars-Sinai Medical Center

Los Angeles, California, United States

Site Status RECRUITING

Sylvester Comprehensive Cancer Center

Miami, Florida, United States

Site Status RECRUITING

Brigham and Women's Hospital

Boston, Massachusetts, United States

Site Status RECRUITING

Henry Ford Health System

Detroit, Michigan, United States

Site Status RECRUITING

Mount Sinai Medical Center

New York, New York, United States

Site Status RECRUITING

Memorial Sloan Kettering

New York, New York, United States

Site Status RECRUITING

Sveta Sofia Hospital

Sofia, , Bulgaria

Site Status RECRUITING

Juravinski Hospital

Hamilton, Ontario, Canada

Site Status RECRUITING

London Health Sciences Centre

London, Ontario, Canada

Site Status RECRUITING

Lakeridge Health

Oshawa, Ontario, Canada

Site Status RECRUITING

University Health Network

Toronto, Ontario, Canada

Site Status RECRUITING

Shaare Zedek Medical Center

Jerusalem, Jerusalem, Israel

Site Status RECRUITING

Soroka University Medical Center

Beersheba, Southern District, Israel

Site Status RECRUITING

Hadassah University Medical Center

Jerusalem, , Israel

Site Status RECRUITING

Lanadio Medical Center

Netanya, , Israel

Site Status RECRUITING

Rabin Medical Center

Petah Tikva, , Israel

Site Status RECRUITING

Sheba Medical Center

Ramat Gan, , Israel

Site Status RECRUITING

Tel Aviv Sourasky Medical Center

Tel Aviv, , Israel

Site Status RECRUITING

Arensia Research Clinic

Bucharest, , Romania

Site Status RECRUITING

Arensia Exploratory Medicine Clinic at Country Hospital Cluj-Napoca

Cluj-Napoca, , Romania

Site Status RECRUITING

University hospital Southampton

Southampton, Hampshire, United Kingdom

Site Status RECRUITING

Cardiff and Vale University Health Board - University Hospital Wales

Cardiff, Wales, United Kingdom

Site Status RECRUITING

The Newcastle Upon Tyne Hospitals NHS Foundation Trust

Newcastle upon Tyne, , United Kingdom

Site Status RECRUITING

Countries

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United States Bulgaria Canada Israel Romania United Kingdom

Central Contacts

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Clinical Trials Administrator

Role: CONTACT

Phone: 844-734-6643

Email: [email protected]

Related Links

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Other Identifiers

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2023-508603-21-00

Identifier Type: CTIS

Identifier Source: secondary_id

R9933-DVT-2308

Identifier Type: -

Identifier Source: org_study_id