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New combo therapy aims to ease tough schizophrenia symptoms

NCT ID NCT06574360

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study tests whether adding a second drug that boosts NMDA receptors to a sigma-1 receptor agonist can better reduce schizophrenia symptoms than the sigma-1 drug alone. About 90 adults with schizophrenia who did not improve on at least two antipsychotics will take the combination for 8 weeks. The main goal is to see if their overall symptoms, measured by a standard scale, get better.

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

About 90 people

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

Started

Sep 2024

Expected to finish

Mar 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

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: * Have a DSM-5 (American Psychiatric Association) diagnosis of schizophrenia * Are resistant to adequate treatments of at least two antipsychotics (excluding clozapine) * Remain symptomatic but without clinically significant fluctuation, while their antipsychotic doses are unchanged for at least 3 months and will be maintained during the period of the 8-week trial * PANSS total score \>70 * Hamilton Depression Rating Scale-17 items (HAMD) \<7 * Are physically healthy and laboratory assessments (including blood routine, biochemical tests) are clinically insignificant. * Have sufficient education to communicate effectively and are capable of completing the assessments of the study. * Agree to participate in the study and provide informed consent Exclusion Criteria: * DSM-5 diagnosis of intellectual disability or substance (including alcohol) use disorder * History of epilepsy, head trauma, central nervous system diseases or mental disorders other than schizophrenia (including major depressive disorder, bipolar disorders, persistent depressive disorder, obsessive-compulsive disorder) * Pregnancy or lactation * Inability to follow protocol

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

  • Department of Psychiatry, China Medical University Hospital

    RECRUITING

    Taichung, Taiwan

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