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Hope for rare brain disorder: new drug trial targets Jordan's syndrome

NCT ID NCT06717438

Disease control Sponsor: Shionogi 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 drug called zatolmilast in 30 people aged 9 to 45 with Jordan's Syndrome, a rare genetic disorder affecting brain development. The goal is to see if the drug improves language and communication skills and is safe. Participants take the drug or a placebo for 24 weeks, and researchers monitor side effects and changes in symptoms.

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

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

30 people

The number who actually took part.

Started

May 2025

Expected to finish

Dec 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

9 to 45 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: 1. Participant is aged 9 to 45 years, inclusive. 2. Participant has confirmed/documented history of PPP2R5D Neurodevelopmental Disorder. 3. Current treatment with no more than 3 prescribed psychotropic medications. 4. Participant has a parent, legal authorized guardian or consistent caregiver. Exclusion Criteria: 1. Participant has body weight less than 25 kilograms (kg). 2. Clinically significant abnormalities, in the investigator's judgment, in safety laboratory tests, vital signs, or electrocardiogram (ECG), as measured during Screening. 3. Concurrent major psychiatric condition (e.g., Major Depressive Disorder, Schizophrenia or Bipolar Disorder) as diagnosed by the investigator. Participants with additional diagnosis of Autism Spectrum Disorder or Anxiety Disorder will be allowed. 4. Participant is planning to commence psychotherapy or cognitive behavior therapy (CBT) during the period of the study or had begun psychotherapy or CBT within 4 weeks prior to Screening.

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As listed by the trial registrant

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

Jordan's syndrome PPP2R5D neurodevelopmental disorder

Contacts and locations

Locations

  • Boston Children's Hospital

    Boston, Massachusetts, 02115, United States

  • Rush University Medical Center

    Chicago, Illinois, 60612, United States

  • Seattle Children's Hospital

    Seattle, Washington, 98101, United States