- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05838573
Metformin Treatment on Cognitive Impairment of Schizophrenia
The Effect of Metformin Treatment on Cognitive Impairment in Individuals With Schizophrenia: A 24-week Multicentre Randomised Controlled Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Estimated)
Phase
- Phase 3
Contacts and Locations
Study Contact
- Name: Jing Huang, M.D.
- Phone Number: 15874290980
- Email: jinghuangserena001@csu.edu.cn
Study Contact Backup
- Name: Jingmei Xiao, M.D.
- Phone Number: 17673129702
- Email: xiaojingmei@csu.edu.cn
Study Locations
-
-
Hunan
-
Changsha, Hunan, China, 410011
- Recruiting
- Mental Health Institute of Second Xiangya Hospital,CSU
-
Contact:
- Renrong Wu, PhD, M.D
- Phone Number: 15874179855
- Email: wurenrong2013@163.com
-
Contact:
- Jing Huang, MD
- Email: jinghuangserena001@csu.edu.cn
-
Sub-Investigator:
- Jingmei Xiao, MD
-
-
Shandong
-
Jinan, Shandong, China, 250014
- Recruiting
- Shandong Mental Health Center
-
Contact:
- Ranran Li, MD
- Phone Number: 18678777190
-
-
Yunnan
-
Dali, Yunnan, China, 671014
- Recruiting
- The Second People's Hospital of Dali Bai Autonomous Prefecture
-
Contact:
- Xuemei Li
- Phone Number: 15894589720
-
-
Zhejiang
-
Ningbo, Zhejiang, China, 315201
- Not yet recruiting
- NingBo KangNing Hospital
-
Contact:
- Weiwei Xie, MD
- Phone Number: 13738486800
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Male and female with aged 18 to 50 years, who meet the Diagnostic and Statistical Manual (DSM-5) diagnostic criteria for schizophrenia;
- Duration of illness less than 15 years with current symptoms in a stable condition;
- Participants must be receiving stable treatment with standard-of-care medications, with a maximum allowance of two antipsychotic medications. If additional anticholinergic agents are required for the management of extrapyramidal symptoms, they should be prescribed at low dosages;
- Have great compliance on medication and follow-up;
- Meet one of the diagnostic criteria for metabolic syndrome: 1)abdominal obesity (i.e. central obesity): waist circumference for male≥90 cm, for female ≥85 cm; 2)fasting blood glucose ≥110 mg/dl (6.1 mmol/l) and/or plasma glucose ≥140 mg/dl (7.8 mmol/l) after glucose load; 3)at fasting state, triglyceride ≥1.7 mmol/l; 4)at fasting state, HDL-C <1.04 mmol/L.
- Signed the study consent for participation.
Exclusion Criteria:
- Having history of substance dependence or abuse or whose symptoms are caused by the other diagnosable mental disorders;
- Having history of traumatic brain injury, seizures or other known neurological or organic diseases of the central nervous system;
- Taking antidepressants, stimulants, mood stabilizer or accepts electricity shock treatment;
- Having current suicidal or homicidal thoughts or any safety concern by research staff that cannot be manage in an inpatient setting;
- Taking dementia related drugs, minocycline, and other drugs that could affect cognitive function.
- The routine blood tests showing significant abnormal renal, liver function or other somatic disease.
- Pregnant or lactating women.
For schizophrenic participants who don't meet any of the diagnostic criteria for metabolic syndrome will only accept baseline evaluations.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Healthy volunteer
|
Apart from psychiatry scales(Hamilton Depression Scale, Young Mania Rating Scale and Self-reporting Inventory-90), other assessments for the healthy subjects are the same as the baseline for sczhiophrenic participants.
|
Experimental: Metformin group
The goal is to investigate whether adding metformin will benefit the cognitive impairment in individuals with schizophrenia.
|
Participants assigned to the metformin group will receive 500mg metformin three times daily (tid) for 24 weeks.
The initial dose will be 500 mg orally in the evening for the first two days, followed by an increase to 500mg twice a day for the subsequent two days.
By day 5, the dosage will be further increased to 500mg tid.
The highest tolerated dosage will be maintained for participants who could not tolerate the maximum dosage.
|
Placebo Comparator: Placebo group
The purpose of using placebo is to judge if the outcome is related to the study medication rather than other reasons.
|
Parallel-dose adjustments will be made for the placebo group to maintain consistency in dosing between the two groups.
|
Other: Cross-sectional participants
Participants do not meet any of the diagnostic criteria for metabolic syndrome: 1)abdominal obesity (i.e. central obesity): waist circumference for male≥90 cm, for female ≥85 cm; 2)fasting blood glucose ≥110 mg/dl (6.1 mmol/l) and/or plasma glucose ≥140 mg/dl (7.8 mmol/l) after glucose load; 3)at fasting state, triglyceride ≥1.7 mmol/l; 4)at fasting state, HDL-C <1.04 mmol/L. the other inclusion criteria and exclusion criteria are same as the intervention group. |
Schizophrenic participants who don't meet any of the diagnostic criteria for metabolic syndrome will only accept baseline evaluations.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes of the score of the Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus Cognitive Battery of interventional participants
Time Frame: From baseline to 12th 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).
|
From baseline to 12th week
|
Changes of brain cerebral blood flow by arterial spin labeling of interventional participants
Time Frame: From baseline to 12th 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.
|
From baseline to 12th week
|
Changes of resting-state functional MRI of interventional participants
Time Frame: From baseline to 12th week
|
At baseline and 12th week, 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 12-week metformin treatment will be used for exploring underlying mechanism.
|
From baseline to 12th week
|
The difference of cerebral blood flow between schizophrenic participants and healthy volunteers
Time Frame: 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.
|
Baseline
|
The difference of resting-state functional MRI between schizophrenic participants and healthy volunteers
Time Frame: 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.
|
Baseline
|
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
Time Frame: 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.
|
Baseline
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes of the score of the Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus Cognitive Battery of interventional participants
Time Frame: From baseline to 24th week
|
At every visit, 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 24-week metformin treatment will be used for assessing the improvement of cognitive function (higher score means better function).
|
From baseline to 24th week
|
Changes of brain cerebral blood flow by arterial spin labeling of interventional participants
Time Frame: From baseline to 24th week
|
At each visit, 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 24-week metformin treatment will be reported.
|
From baseline to 24th week
|
Changes of resting-state functional MRI of interventional participants
Time Frame: 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.
|
From baseline to 24th week
|
Changes of social function by Personal and Social Performance Scale
Time Frame: 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)
|
From baseline to 24th week
|
Changes of clinical symptoms by Scale for Assessment of Negative Symptoms
Time Frame: 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)
|
From baseline to 24th week
|
Changes of clinical symptoms by Positive And Negative Syndrome Scale
Time Frame: 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)
|
From baseline to 24th week
|
Changes of level of phosphorylated insulin receptor substrate 1 and its downstream mediators in Extracellular Vesicles of neuronal origin (NEVs) isolated from blood of interventional participants
Time Frame: From baseline to 24th week
|
Phosphorylated insulin receptor substrate 1 and its downstream mediators represent the state of neuronal insulin resistance, whose improvement means better insulin signaling.
For interventional participants, blood samples will be collected and stored at -80℃ at every visit.
The NEVs isolation and biomarker measurements will be processed uniformly at the end, the changes of the level of biomarkers will partly reflect the changes of central insulin resistance after metfromin treament.
|
From baseline to 24th week
|
Changes of homoeostasis model assessment-estimated insulin resistance
Time Frame: 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.
|
From baseline to 24th week
|
The difference of the level of phosphorylated insulin receptor substrate 1 and its downstream mediators in Extracellular Vesicles of neuronal origin isolated from blood between schizophrenic participants and healthy volunteers
Time Frame: Baseline
|
Phosphorylated insulin receptor substrate 1 and its downstream mediators represent the state of neuronal insulin resistance, whose improvement means better insulin signaling.
For schizophrenic participants and healthy volunteers, blood samples will be collected and stored at -80℃ at baseline.
The NEVs isolation and biomarker measurements will be processed uniformly, and the difference of the level of phosphorylated insulin receptor substrate 1 and its downstream mediators between two groups will be used for exploring underlying mechanism of disease.
|
Baseline
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
High-resolution T1-weighted anatomical images and Diffusion Tensor Imaging by MRI at baseline for predicting efficacy
Time Frame: From baseline to 24th week
|
T1-weighted images will be acquired using 3D inversion recovery-prepared fast spoiled gradient-echo sequences, while Diffusion Tensor Imaging (DTI) will be performed using diffusion-weighted echo planar imaging sequences.
The T1-weighted mages and DTI acquired at baseline will be analysed for predicting efficacy of metformin on cognitive function for interventional participants.
|
From baseline to 24th week
|
The difference of Diffusion Tensor Imaging scanned by MRI between schizophrenic participants and healthy volunteers
Time Frame: Baseline
|
Diffusion Tensor Imaging (DTI) will be performed using diffusion-weighted echo planar imaging sequences.
The analysis of DTI will be conducted to investigate the difference of brain structure and morphology between schizophrenic participants and healthy volunteers.
|
Baseline
|
Changes of Diffusion Tensor Imaging scanned by MRI
Time Frame: From baseline to 24th week
|
Diffusion Tensor Imaging (DTI) will be performed using diffusion-weighted echo planar imaging sequences.
The analysis of DTI changes following a 24-week treatment will be conducted to investigate the impact of metformin on brain structure and morphology.
|
From baseline to 24th week
|
Changes of the level of blood lipids
Time Frame: From baseline to 24th week
|
Blood lipids include total cholesterol, low-density lipoprotein-cholesterol, triglyceride and high-density lipoprotein-cholesterol.
For interventional participants, the changes of the level of blood lipids will represent the effects of metformin on metabolism.
|
From baseline to 24th week
|
Safety evaluation through the Systematic Assessment for Treatment Emergent Events
Time Frame: From baseline to 24th week
|
The participants will be asked to score the occurred side effects using the Systematic Assessment for Treatment Emergent Events at every visit.
(higher score means worse side effect)
|
From baseline to 24th week
|
Score of Calgary Depressing Scale for Schizophrenia
Time Frame: From baseline to 24th week
|
Calgary Depressing Scale for Schizophrenia which be assessed at every visit will be used for excluding the impact of depressive symptoms on cognitive function.
(higher score means bigger impact)
|
From baseline to 24th week
|
Changes of Body Mass Index
Time Frame: From baseline to 24th week
|
To some extent, Body Mass Index(BMI) can represent the situation of peripheral metabolism.
|
From baseline to 24th week
|
Changes of waist-hip circumference
Time Frame: From baseline to 24th week
|
To some extent, waist-hip circumference can represent the situation of peripheral metabolism.
|
From baseline to 24th week
|
Score of the Barnes Akathisia Rating Scale
Time Frame: From baseline to 24th week
|
At every visit, the Barnes Akathisia Rating Scale will be used to evaluate akathisia caused by antipsychotic drugs.
(higher score means worse side effect)
|
From baseline to 24th week
|
Score of the Simpson-Angus Extrapyramidal Side Effects Scale
Time Frame: From baseline to 24th week
|
At every visit, the Simpson-Angus Extrapyramidal Side Effects Scale will be used to evaluate extrapyramidal symptoms.
(higher score means worse side effect)
|
From baseline to 24th week
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Chair: Renrong Wu, M.D., Ph.D., Mental Health Institute of Second Xiangya Hospital,CSU
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- WU202211MET
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Schizophrenia
-
Organon and CoCompletedSchizophrenia, Paranoid | Schizophrenia, Disorganized | Schizophrenia, Undifferentiated
-
Organon and CoCompletedSchizophrenia, Paranoid | Schizophrenia, Disorganized | Schizophrenia, Undifferentiated
-
Bradley LegaRecruiting
-
All India Institute of Medical Sciences, BhubaneswarRecruitingTreatment Resistant SchizophreniaIndia
-
King's College LondonSouth London and Maudsley NHS Foundation TrustRecruitingTreatment-resistant Schizophrenia | Healthy Controls | Treatment-responsive SchizophreniaUnited Kingdom
-
University of Sao PauloUnknownRefractory Schizophrenia | Super Refractory SchizophreniaBrazil
-
Peking UniversityNot yet recruitingTreatment-resistant Schizophrenia
-
Rakitzi, StavroulaActive, not recruiting
-
Ohio State UniversityRecruitingTreatment-resistant SchizophreniaUnited States
-
University Hospital, BrestRecruitingSchizophrenia | Schizophrenia Prodromal | Schizophrenia, ChildhoodFrance
Clinical Trials on Metformin treatment
-
Kristian KarstoftUniversity of CopenhagenCompletedDiabetes Mellitus, Type 2 | Impaired Glucose ToleranceDenmark
-
Kristian KarstoftUniversity of CopenhagenCompletedDiabetes Mellitus, Type 2 | Impaired Glucose ToleranceDenmark
-
Fudan UniversityRecruitingDiabete Mellitus | Pancretic CancerChina
-
Janssen Research & Development, LLCCompleted
-
Norwegian University of Science and TechnologyTerminated
-
Cairo UniversityCompleted
-
Shanghai First Maternity and Infant HospitalRenJi Hospital; Shanghai 10th People's HospitalRecruiting
-
Janssen Research & Development, LLCCompleted
-
Janssen Research & Development, LLCCompleted
-
Shanghai 10th People's HospitalCompleted