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New obesity drug combo aims for greater weight loss

NCT ID NCT07463846

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

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 24, 2026 · Last updated Sep 17, 2026 · Updated 7 times

Summary

This study tests an experimental drug called ALN-2232, given alone or together with the approved weight-loss drug tirzepatide, in 156 adults with obesity. The goal is to see if the combination is safe and leads to more weight loss than either drug alone. Participants will receive injections and be monitored for side effects and changes in body weight.

What this could mean

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

Active substance
ALN-2232 (an experimental drug) and tirzepatide (a weight-loss drug)
What this could lead to
If successful, this could lead to a new combination treatment for obesity that helps people lose more weight than current options.
What could go wrong
This is an early-phase trial with only 156 participants, so results may not apply to everyone. The experimental drug ALN-2232 has unknown safety and effectiveness at this stage.

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 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

About 156 people

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

Started

Mar 2026

Expected to finish

Mar 2028

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

18 to 65 years

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.

Inclusion Criteria: All Parts: * Has a body mass index (BMI) of ≥30 kg/m\^2 and \<40 kg/m\^2 * Has a hemoglobin A1c (HbA1c) \<6.5% Exclusion Criteria: All Parts: * Has any clinically significant concomitant disease, medical condition, or abnormal laboratory finding that could compromise participant safety or confound interpretation of study results * Receiving therapies for chronic weight management or antidiabetic medications Note: other protocol defined inclusion/exclusion criteria apply

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder

As listed by the trial registrant

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

Obesity

How to take part

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

  1. The places running it

    1 site. The list below names each one and where it is.

  2. 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 ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Clinical Trial Site

    RECRUITING

    Mount Royal, H3P 3P1, Canada

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