Trial · NCT05838573
Metformin Treatment on Cognitive Impairment of Schizophrenia
NCT05838573, Phase 3, Completed, Central South University
3 sourcestrials-2026-11-12-0.5.0
Cite this record
ConductScience Library. Metformin Treatment on Cognitive Impairment of Schizophrenia. Trials, record NCT05838573. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT05838573
On this page
Trial
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
- Title
- Metformin Treatment on Cognitive Impairment of Schizophrenia
- NCT number
- NCT05838573
- Status
- Completed
- Phases
- Phase 3
- Enrollment
- 120 participants, actual
- Lead sponsor
- Central South University
- Conditions
- Schizophrenia
- Interventions
- Metformin treatment, Placebo treatment, Baseline assessments, Volunteer assessments
- First posted
- 2023-05-01
- Last updated
- 2026-07-31
Source ClinicalTrials.gov
Registered outcomes13
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description |
|---|---|---|---|
| Primary | Changes of the score of the Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus Cognitive Battery of interventional participants | From baseline to 12th week；From baseline to 24th week； | At baseline and 12th week, the cognitive function of interventional participants will be assessed using the Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus Cognitive Battery. Evaluator convert raw scores to scale scores, then to normalized T scores. T scores of seven domains and composite score are further calculated. The changes of scores after 12-week metformin treatment will be used for assessing the improvement of cognitive function (higher score means better function). |
| Primary | Changes of brain cerebral blood flow by arterial spin labeling of interventional participants | From baseline to 12th week；From baseline to 24th week | At baseline and 12th week, whole brain cerebral blood flow (CBF) will be recorded by arterial spin labeling (ASL). For interventional participants, the changes in CBF (c-CBF) before and after the application of 160 units nasal insulin spray of interventional participants will be calculated. The changes of c-CBF after 12-week metformin treatment will be reported. |
| Secondary | Changes of resting-state functional MRI of interventional participants | From baseline to 12th week; From baseline to 24th week | At each visit, the resting-state functional MRI(fMRI) will be conducted at fasting state. For interventional participants, the changes in fMRI (c-fMRI) before and after the application of 160 units nasal insulin spray will be analysed. The changes of c-fMRI after 24-week metformin treatment will be used for exploring underlying mechanism. |
| Secondary | Changes of social function by Personal and Social Performance Scale | From baseline to 24th week | The changes of Personal and Social Performance Scale of interventional participants at different follow up timepoint will be used for evaluating the improvement of personal life and social function.(higher score means better function) |
| Secondary | Changes of clinical symptoms by Scale for Assessment of Negative Symptoms | From baseline to 24th week | The changes of Scale for Assessment of Negative Symptoms of interventional participants at different follow up timepoint will be used for recording the improvement of negative symptoms.(lower score means alleviation of symptoms) |
| Secondary | Changes of clinical symptoms by Positive And Negative Syndrome Scale | From baseline to 24th week | The changes of Positive And Negative Syndrome Scale of interventional participants at different follow up timepoint will be used for recording the improvement of psychiatric symptoms.(lower score means alleviation of symptoms) |
| Secondary | Changes of homoeostasis model assessment-estimated insulin resistance | From baseline to 24th week | Homoeostasis model assessment-estimated insulin resistance (HOMA-IR) represents systemic insulin resistance(higher value means worse outcome). For interventional participants, the changes of HOMA-IR will partly reflect the changes of peripheral insulin resistance after metfromin treament. |
| Secondary | The difference of cerebral blood flow between schizophrenic participants and healthy volunteers | Baseline | At baseline, whole brain cerebral blood flow (CBF) will be recorded by arterial spin labeling (ASL) for every participants, the changes in CBF (c-CBF) before and after the application of 160 units nasal insulin spray will be calculated. The difference of c-CBF of the brain between schizophrenic participants and healthy volunteers will be reported. |
| Secondary | The difference of resting-state functional MRI between schizophrenic participants and healthy volunteers | Baseline | At baseline, the resting-state functional MRI(fMRI) will be conducted at fasting state. For every participants, the changes in fMRI (c-fMRI) before and after the application of 160 units nasal insulin spray will be analysed. The c-fMRI between schizophrenic participants and healthy volunteers may reflect the underlying mechanism of disease. |
| Secondary | The difference of the score of the Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus Cognitive Battery between schizophrenic participants and healthy volunteers | Baseline | At baseline, the cognitive function will be assessed using the Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus Cognitive Battery, including schizophrenic participants and healthy volunteers. Evaluator convert raw scores to scale scores, then to normalized T scores. T scores of seven domains and composite score are further calculated(higher score means better function). The difference of scores and their relationships with cerebral blood flow (CBF) and resting-state functional MRI(fMRI) will be used for exploring underlying mechanism. |
1 to 10 of 13Source ClinicalTrials.gov
See all 13 registered outcomesOutcomes0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
None in this release.
Results by group0
Each measurement the trial posted, group by group, in the words and numbers it posted.
None in this release.
Participant flow0
How many started, completed or left each group, period by period.
None in this release.
Adverse events0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
None in this release.
Adverse event totals0
The totals the trial posted for each group.
None in this release.
Papers0
The papers the trial lists on ClinicalTrials.gov.
None in this release.
Grants0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
None in this release.
Trial comparisons0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
None in this release.
Tests0
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
None in this release.
Data dates
The day each source was copied for this release.
Sources 3
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
- NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
- NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
For software
Read this trial from software.
The record and each of its lists are JSON, twenty rows a page. No key.
GET https://conductscience.org/api/trials/v1/NCT05838573
GET https://conductscience.org/api/trials/v1/NCT05838573/registered