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New antibody drugs aim to prevent Catheter-Related blood clots

NCT ID NCT07697599

Disease control Sponsor: Regeneron Pharmaceuticals Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time

Summary

This study tests two experimental drugs, REGN7508 and REGN9933, to see if they can prevent blood clots in people who have a peripherally inserted central catheter (PICC). People with PICCs are at higher risk for venous thromboembolism (VTE), which can be serious. The trial compares these drugs against a placebo to evaluate their effectiveness and safety, including any risk of bleeding.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
REGN7508 (cenvacibart) and REGN9933 (amrecibart), monoclonal antibodies against factor XI
What this could lead to
If successful, these drugs could offer a new way to prevent dangerous blood clots in people who need a central catheter, potentially reducing the risk of serious complications like pulmonary embolism.
What could go wrong
This is an early-phase trial, and the drugs may not prove more effective than placebo. There is also a risk of unexpected bleeding or other side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

About 1,908 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Sep 2029

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

15 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Key Inclusion Criteria: 1. Is undergoing PICC placement for Intravenous (IV) administration of clinically indicated medications, including chemotherapy, antibiotics, TPN, and/or other indications as described in the protocol 2. Has Eastern Cooperative Oncology Group Performance (ECOG) Status ≤3 or equivalent functional status as described in the protocol 3. Has International Normalization Ratio (INR) and aPTT values no more than 25% above the upper limit as described in the protocol 4. Weighs at least 40 kg during the screening period Key Exclusion Criteria: 1. Has a history of prior venous thrombosis in the arm and/or ipsilateral thoracic central veins in which the PICC is to be placed 2. Has acute leukemia, myelodysplastic syndrome, or primary and secondary myelofibrosis 3. Has unresected luminal gastrointestinal (GI) (including esophageal) or unresected genitourinary (GU) malignancy 4. Has current or history of known brain tumors or brain metastases 5. Has any major cardiovascular event within approximately the past 30 days prior to study administration 6. Pre-existing central venous catheter or indwelling spinal or epidural catheter during the screening period Note: Other Protocol Defined Inclusion/ Exclusion Criteria Apply

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Conditions

The condition(s) this trial relates to.

thrombotic disease venous thromboembolism prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Venous thromboembolism (VTE)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

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