Clinical trial Recruiting at 2 sites Interventional Ages 18 and up

Investigating how depression treatment affects gut health and brain function in people with HIV

Official title: Treatment Research Investigating Depression Effects on Neuroimmune Targets (TRIDENT)

Run by Florida International University · NCT05136703 · Data updated 2026-11-12

This study is testing whether treating depression with therapy can improve gut health and brain function in people living with HIV.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment150 (estimated)
SponsorFlorida International University
Academic / other
Locations2 sites (Coral Gables, Florida and 1 other locations)
StatusRecruiting
StartedAugust 30, 2022
Main results expectedJune 30, 2027
Study endsDecember 31, 2027
Registry record updatedFebruary 6, 2026
Trial IDNCT05136703 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 or older who are HIV positive, have a current diagnosis of major depressive disorder, and are stable on their antidepressant regimen.

Probably not a fit

Patients who are actively untreated for major mental illness or have received cognitive-behavioral therapy for depression in the past two years 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 randomized controlled trial aims to explore the effects of cognitive-behavioral therapy for adherence and depression (CBT-AD) on the gut microbiome, immune system, and brain function in individuals living with HIV. The study will assess how reductions in depressive symptoms can lead to changes in the microbiome-gut-brain axis, potentially improving neurobehavioral outcomes. Participants will undergo fMRI scans and biospecimen collection to evaluate the biological mechanisms involved in these changes. The research seeks to establish a causal relationship between depression treatment and its effects on health in the context of HIV.

Why it matters

Potential benefit: If successful, this study could lead to improved mental and physical health outcomes for individuals living with HIV by integrating psychological treatment with biological health improvements.

How similar studies have gone: While the integration of cognitive-behavioral therapy and microbiome research is innovative, similar studies have shown promising results in understanding the interplay between mental health and biological factors.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age 18 or older
2. Speaks and reads English
3. Verified HIV+ status with antiretroviral medications bearing his/her name
4. Current diagnosis on Major Depressive Disorder (MDD) using a structured clinical interview (DIAMOND) or Hamilton Rating Scale for Depression scores of 7 or greater
5. If prescribed antidepressants, on a stable regimen and dose for at least 2 months
6. Suppressed HIV viral load (\< 200 copies/mL)
7. Able to complete Functional Magnetic Resonance Imaging (fMRI) scans (i.e., no claustrophobia, no metal implants, no pacemaker, and BMI \< 40)

Exclusion Criteria:

1. Unable to provide informed consent
2. Active, untreated major mental illness
3. Pregnancy at baseline
4. Received CBT for depression in the past 2 years
5. 5\. Otherwise eligible but does not complete the run-in period that includes the baseline assessment, biospecimen collection, the fMRI visit, and a separately scheduled randomization visit

Where it's running

  • University of Miami Neuroimaging Facility
    Coral Gables, Florida, United States
    Recruiting
  • Care Resource - Midtown Miami
    Miami, Florida, United States
    Recruiting

Study contacts

  • Principal investigator: Adam W Carrico, PhD — Florida International University
  • Study coordinator: Adam W Carrico, PhD
  • Email: acarrico@fiu.edu
  • Phone: (305) 348-7887

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.