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New siRNA drug ADX-626 tested in humans for first time

NCT ID NCT07081503

Knowledge-focused Sponsor: ADARx Pharmaceuticals, Inc. 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Sep 11, 2026 · Updated 4 times

Summary

This early-stage study is testing a new drug called ADX-626 in 44 healthy adults to see if it is safe and how the body processes it. Participants will receive either the drug or a placebo (saline). The study does not aim to treat any disease, but to gather important safety information for future research.

What this could mean

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

Active substance
ADX-626 (siRNA drug)
What this could lead to
If successful, this early study could pave the way for future trials of ADX-626 in specific diseases.
What could go wrong
This is a very early Phase 1 study in healthy people, so it won't show if the drug treats any disease. Side effects are possible, and the drug may not work as hoped in later trials.

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

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 44 people

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

Started

Aug 2025

Expected to finish

Jun 2027

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 45 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Age 18 to 45 years at the time of informed consent * Males or women of non-childbearing potential (WONCBP) * Willing to comply with all study requirements while participating * Suitable venous access for blood sampling. * Body weight ≥ 50 kg and a body mass index (BMI) ≤25 kg/m2 * Normal laboratory results including liver enzymes, hemoglobin, platelet count, and coagulation parameters * Willing to use acceptable contraception methods if applicable Key Exclusion Criteria: * Significant medical condition such as hypertension, diabetes, cardiovascular disease, or cancer * History of bleeding or coagulation disorders, prior instances of major bleeding, or a family history of bleeding disorders. * Current infection * Participation in an interventional drug study within the last 90 days

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As listed by the trial registrant

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

Healthy adult participants

How to take part

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

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

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

  3. 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 ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Richmond Pharmacology

    RECRUITING

    London, SE1 1YR, United Kingdom

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