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New drug SPG601 aims to boost brain function in fragile x patients

NCT ID NCT07439510

Symptom relief Sponsor: Spinogenix 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new drug called SPG601 in adult men with Fragile X syndrome. The goal is to see if it can improve thinking and brain function. About 248 participants will receive either the drug or a placebo. The study is not yet recruiting.

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 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

About 248 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Jun 2030

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

Male participants only

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: * Adult males aged 18 to 45 years, inclusive * Diagnosis of Fragile X as confirmed with genetic testing * Patient must have caregiver * Must be in good health with no significant medical history Exclusion Criteria: * Any physical or psychological condition that prohibits study completion * Uncontrolled seizures or history of epilepsy with a seizure in the past 6 months. * Auditory or visual impairments that cannot be corrected * History of suicidal behavior or suicidal ideation * Screening vital signs that are abnormal per protocol specification * ECG that are clinically significant abnormal * History of substance abuse or dependence within 6 months * Other investigational products within 30 days * Unable to swallow capsules

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Conditions

The condition(s) this trial relates to.

fragile X syndrome

As listed by the trial registrant

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

Fragile X syndrome (FXS)

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

    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.

More trials for these conditions

Other studies related to the condition(s) this trial covers.