Clinical trial Recruiting at 1 site Interventional Ages 18 to 40

Using iTBS to Manage Increased Appetite from Antipsychotics in Schizophrenia

Official title: Effects of Intermittent Theta Burst Stimulation (iTBS) on Increased Appetite Induced by Antipsychotics in Patients With Schizophrenia

Run by Central South University · NCT05783063 · Data updated 2026-11-12

This study is testing if a new brain stimulation technique can help people with schizophrenia manage increased appetite caused by their antipsychotic medications.

Quick facts

Study typeInterventional
Ages18 Years to 40 Years
SexAll
Enrollment60 (estimated)
SponsorCentral South University
Academic / other
Locations2 sites (Changsha, Hunan and 1 other locations)
StatusRecruiting
StartedAugust 1, 2023
Main results expectedJune 1, 2026
Study endsAugust 1, 2026
Registry record updatedMarch 26, 2025
Trial IDNCT05783063 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18-40 with a diagnosis of schizophrenia who have experienced significant weight gain or have a BMI of 25 or higher due to antipsychotic treatment.

Probably not a fit

Patients with severe mental illnesses other than schizophrenia, significant cognitive impairments, or those with abnormal brain structures may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial evaluates the efficacy and safety of intermittent theta burst stimulation (iTBS) in reducing increased appetite caused by antipsychotic medications in patients with schizophrenia. A total of 60 participants will be randomized to receive either active or sham iTBS treatments, administered to the left dorsolateral prefrontal cortex over five days. The study will measure changes in appetite and clinical symptoms using various questionnaires and scales, alongside assessments of cognitive function and metabolic indicators. Blood and fecal samples will be collected to analyze changes in neuroregulatory factors and microflora.

Why it matters

Potential benefit: If successful, this approach could help manage appetite-related side effects of antipsychotic medications, improving the overall health and quality of life for patients with schizophrenia.

How similar studies have gone: While conventional high-frequency rTMS has shown effectiveness in treating obesity, studies specifically using iTBS in schizophrenia patients are rare, making this approach relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age between 18-40 years old;
2. Meeting the diagnostic criteria for schizophrenia in DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition);
3. BMI ≥ 25kg/m 2 or over 10% weight gain after taking antipsychotics in the last year;
4. Not receiving TMS therapy in the past month;
5. Using no more than two antipsychotic medications (including olanzapine, haloperidol, amisulpride, asenapine, risperidone, paliperidone, clozapine, quetiapine, iloperidone, chlorpromazine, sertindole, zotepine), not using antidepressants, mood stabilizers and other drugs, but allowing short-term use of benzodiazepines, benzhexol and propranolol;
6. Signing written informed consents voluntarily.

Exclusion Criteria:

1. Other severe mental illnesses, mental retardation, dementia and severe cognitive impairment according to diagnostic criteria of ICD-10 or DSM-5;
2. Abnormal brain structure or function owing to any major physical disease, neurological disease, traumatic brain injury, etc.;
3. Metallic implants, pacemakers, epilepsy history or other contraindications of TMS;
4. Suicidal thoughts or behaviors;
5. Alcohol or substance abuse;
6. Pregnant or lactating women;
7. Other contraindications of MRI;
8. Receiving regular MECT, or weight-loss therapy in the latest month;
9. Other abnormal examination results considered to be inappropriate for inclusion by researchers.

Where it's running

  • The Second People's Hospital of Dali Bai Autonomous Prefecture
    Dali, Yunnan, China
    Recruiting
  • Central South University
    Changsha, Hunan, China
    Not yet recruiting

Study contacts

  • Principal investigator: Renrong Wu, M.D. Ph.D — Department of Psychiatry, The Second Xiangya Hospital of Central South University
  • Study coordinator: Renrong Wu, M.D. Ph.D
  • Email: wurenrong@csu.edu.cn
  • Phone: +8615874179855

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.