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

NCT ID: NCT04917302

Last Updated: 2025-02-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-10-13

Study Completion Date

2026-12-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Previous studies found that some NMDA-enhancing agents were able to improve clinical symptoms of patients with chronic schizophrenia. In addition, several drugs with anti-inflammatory properties have been tested in clinical trials for the treatment of schizophrenia too. Whether combined treatment of an NMDA-enhancing agent and a drug with anti-inflammatory property can be better than an NMDA-enhancing agent alone deserves study.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Several lines of evidence suggest that both NMDA and inflammatory hypotheses have been implicated in schizophrenia. Previous studies found that some NMDA-enhancing agents were able to augment efficacy of antipsychotics in the treatment of chronic schizophrenia. In addition, several drugs with anti-inflammatory properties have been tested in clinical trials for the treatment of schizophrenia too. Whether a drug with anti-inflammatory property can strengthen the efficacy of an NMDA-enhancer (NMDAE) in the treatment of schizophrenia remains unknow. Therefore, this study aims to compare NMDAE plus a drug with anti-inflammatory property and NMDAE plus placebo in the treatment of schizophrenia. The subjects are the patients with treatment-resistant schizophrenia who have responded poorly to two or more kinds of antipsychotics treatment. They keep their original treatment and are randomly, double-blindly assigned into two treatment groups for 12 weeks: (1) NMDAE plus Anti-inflammatory Agent (AIFA), or (2) NMDAE plus placebo. Clinical performances and side effects are measured at weeks 0, 2, 4, 6, 9, and 12. Cognitive functions are assessed at baseline and at endpoint of treatment by a battery of tests. The efficacies of NMDAE plus AIFA and NMDAE plus placebo will be compared.

Chi-square (or Fisher's exact test) will be used to compare differences of categorical variables and t-test (or Mann-Whitney test if the distribution is not normal) for continuous variables between treatment groups. Mean changes from baseline in repeated-measure assessments will be assessed using the generalized estimating equation (GEE). All p values for clinical measures will be based on two-tailed tests with a significance level of 0.05.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Schizophrenia

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

NMDAE plus Anti-inflammatory Agent (AIFA)

An NMDA enhancer plus a drug with anti-inflammatory property

Group Type EXPERIMENTAL

NMDAE plus AIFA

Intervention Type DRUG

Use of an NMDA enhancer plus a drug with anti-inflammatory property for the treatment of schizophrenia.

NMDAE plus Placebo

An NMDA enhancer plus Placebo

Group Type PLACEBO_COMPARATOR

NMDAE plus Placebo Cap

Intervention Type DRUG

Use of an NMDA enhancer plus placebo as a comparator

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

NMDAE plus AIFA

Use of an NMDA enhancer plus a drug with anti-inflammatory property for the treatment of schizophrenia.

Intervention Type DRUG

NMDAE plus Placebo Cap

Use of an NMDA enhancer plus placebo as a comparator

Intervention Type DRUG

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

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
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Ministry of Science and Technology, Taiwan

OTHER_GOV

Sponsor Role collaborator

China Medical University Hospital

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

Department of Psychiatry, China Medical University Hospital

Taichung, , Taiwan

Site Status RECRUITING

Countries

Review the countries where the study has at least one active or historical site.

Taiwan

Central Contacts

Reach out to these primary contacts for questions about participation or study logistics.

Hsien-Yuan Lane, M.D., Ph.D

Role: CONTACT

886 4 22052121 ext. 1855

Facility Contacts

Find local site contact details for specific facilities participating in the trial.

Hsien-Yuan Lane, M.D., Ph.D

Role: primary

886 4 22052121 ext. 1855

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

CMUH108-REC1-178

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

Biomarkers in Schizophrenia
NCT00817336 COMPLETED PHASE2