Combining NMDA-enhancing and anti-inflammatory treatments for schizophrenia

Combination of NMDA-enhancing and Anti-inflammatory Treatments for Schizophrenia

Phase 2 Interventional China Medical University Hospital · NCT04917302

This study is testing if a new combination of treatments can help people with treatment-resistant schizophrenia feel better compared to a placebo while they continue their usual medication.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment60 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorChina Medical University Hospital Academic / other
Locations1 site (Taichung)
Trial IDNCT04917302 on ClinicalTrials.gov

What this trial studies

This study investigates the effectiveness of combining an NMDA-enhancing agent with an anti-inflammatory drug in treating patients with treatment-resistant schizophrenia. Participants will be randomly assigned to receive either the combination treatment or a placebo while maintaining their current antipsychotic regimen. The study will last for 12 weeks, during which clinical performance and cognitive functions will be assessed at multiple time points. The goal is to determine if the combined treatment offers superior benefits compared to the NMDA-enhancer alone.

Who should consider this trial

Good fit: Ideal candidates are adults diagnosed with schizophrenia who have not responded adequately to at least two different antipsychotic medications.

Not a fit: Patients with intellectual disabilities, substance use disorders, or other serious medical conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a new treatment option for patients with treatment-resistant schizophrenia.

How similar studies have performed: While previous studies have explored NMDA-enhancing agents and anti-inflammatory treatments separately, this combined approach is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Have a DSM-5 (American Psychiatric Association) diagnosis of schizophrenia
* Are resistant to adequate treatments of at least two antipsychotics
* 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 12-week trial
* PANSS total score ≥ 70
* 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, stroke, or serious medical or central nervous system diseases (other than schizophrenia) which may interfere with the study
* Clinically significant laboratory screening tests (including blood routine, biochemical tests)
* Pregnancy or lactation
* Inability to follow protocol

Where this trial is running

Taichung

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions SchizophreniaNMDAInflammation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.