Chinese Longitudinal and Systematic Study of Bioplar Disorder
CLASS-BD
1 other identifier
interventional
10,000
1 country
1
Brief Summary
Affective disorders (mainly including major depressive disorder and bipolar disorder) are common, chronic and highly disabling mental disorders, which lack of objective biological markers. It is believed that genetic and environmental factors are involved in the development of affective disorders. Gut microbes can affect the function of brain neural circuits by mediating metabolic, immune, endocrine and autonomic changes along the brain-gut axis. The brain can also regulate intestinal microbes through endocrine, neural structure, neurogenic exosomes and other pathways. Based on the brain-gut axis, this study intends to establish a large cohort of affective disorders, and screen out efficient and convenient biomarkers for clinical diagnosis and efficacy prediction by studying key indicators such as intestinal microbes, serum metabolites and immune indexes, brain-derived exosomes, and brain functional imaging.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable major-depressive-disorder
Started Nov 2021
Longer than P75 for not_applicable major-depressive-disorder
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
November 1, 2021
CompletedFirst Submitted
Initial submission to the registry
July 28, 2022
CompletedFirst Posted
Study publicly available on registry
July 29, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 31, 2026
October 17, 2022
October 1, 2022
5.2 years
July 28, 2022
October 13, 2022
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Montgomery-Asberg Depression Rating Scale(MADRS)
MADRS score is to evaluate the degree of depression, and the higher score means severer depression.
0 ~16 weeks
Study Arms (3)
bipolar disorder
EXPERIMENTALPatients with BD depressive episode received standard treatment with quetiapine fumarate tablets, starting from 50mg/ night, titrated to a therapeutic dose of 300-400mg/ night within 10 days, and maintained treatment for 4 weeks. According to the patient's condition, patients with BD depressive episode could receive another standard treatment with lurasidone, starting from 20mg/ night, titrated to a therapeutic dose of 40mg/ night within 6 days, and maintained treatment for 4 weeks. Adverse reactions and changes in condition of all patients were recorded
major depressive disorder
EXPERIMENTALMDD depressive episode patients received standard treatment with escitalopram oxalate tablets, starting from 5mg/ day once, titrated to a therapeutic dose of 10-20mg/ day within 1 week, and maintained treatment for 4 weeks
healthy control
NO INTERVENTIONno interventions
Interventions
Starting at 5mg qn, the treatment dose was titrated to 10-20mg qn within 1 week and maintained for 4 weeks
Starting at 50mg qn, the treatment dose was titrated to 300-400mg qn within 10 days, and maintained the treatment for 4 weeks.
Starting at 20mg qn, the treatment dose was titrated to 40mg qn within 6 days,and maintained the treatment for 4 weeks.
Eligibility Criteria
You may qualify if:
- Both biological parents are Han nationality;
- Aged 16-65;
- The subjects met the clinical diagnostic criteria of DSM-5 for depressive episodes of MDD/BD;
- Did not take any immunomodulatory preparations within 1 month before enrollment;
- No clear history of respiratory tract, urinary system, digestive system infection within 1 month before enrollment;
You may not qualify if:
- Those with schizophrenia spectrum, neurodevelopmental disorder, dementia, memory impairment or other cognitive impairment that meet the DIAGNOSTIC criteria of DSM-5;
- Mental disorders caused by substance abuse (alcohol, drugs, etc.), patients suffering from serious physical diseases and immune system diseases, such as diabetes, thyroid diseases, hypertension, heart disease, liver and kidney dysfunction, autoimmune diseases, etc.;
- Had received medication (such as antidepressants, antipsychotics, mood stabilizers, etc.) within 1 month before enrollment;
- those who had used ECT before enrollment;
- Currently have serious suicidal thoughts or behaviors, or serious excitement;
- those who cannot follow the doctor's advice or have no guardian;
- pregnant or breast-feeding women, or those who plan to become pregnant;
- Contraindications to MRI examination;
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
The First Affiliated Hospital of Zhejiang University
Hangzhou, Zhejiang, 310000, China
Related Publications (1)
Tang A, Chen Y, Ding J, Li Z, Xu C, Hu S, Lai J. Gut microbiota remodeling and sensory-emotional functional disruption in adolescents with bipolar depression. J Transl Med. 2025 Oct 14;23(1):1083. doi: 10.1186/s12967-025-07152-4.
PMID: 41088296DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Head of Department of Psychaitry , First Affiliated Hospital of Zhejiang University
Study Record Dates
First Submitted
July 28, 2022
First Posted
July 29, 2022
Study Start
November 1, 2021
Primary Completion (Estimated)
December 31, 2026
Study Completion (Estimated)
December 31, 2026
Last Updated
October 17, 2022
Record last verified: 2022-10
Data Sharing
- IPD Sharing
- Will not share
Arms and interventions can be shared, while the clinical data will not be shared