Clinical trial Recruiting at 1 site Early Phase 1 Interventional Ages 60 to 80

Thiamine treatment for cognitive issues after heart surgery

Official title: Thiamine Intervention and Cognition in Older Adults Undergoing Coronary Artery Bypass Grafting - A Randomized Clinical Trial.

Run by University of California, Los Angeles · NCT06326996 · Data updated 2026-11-12

This study is testing if giving thiamine to patients with heart disease after heart surgery can help improve their thinking and memory skills.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Ages60 Years to 80 Years
SexAll
Enrollment52 (estimated)
SponsorUniversity of California, Los Angeles
Academic / other
Locations1 site (Los Angeles, California)
StatusRecruiting
StartedOctober 10, 2024
Main results expectedSeptember 30, 2027
Study endsSeptember 30, 2027
Registry record updatedNovember 6, 2026
Trial IDNCT06326996 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are older adults aged 60-80 with coronary heart disease scheduled for bypass grafting and exhibiting thiamine deficiency.

Probably not a fit

Patients with pre-existing dementia, uncontrolled blood glucose levels, or those currently taking thiamine will 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 investigates the effects of thiamine intervention on cognitive deficits in patients with coronary heart disease undergoing coronary artery bypass grafting. It employs a double-blind, randomized design with 52 participants divided into two groups: one receiving thiamine and the other a placebo. The study aims to assess cognitive performance and measure blood levels of thiamine, lactate, and inflammatory markers. The goal is to determine if thiamine can mitigate cognitive decline post-surgery, potentially leading to improved quality of life for patients.

Why it matters

Potential benefit: If successful, this intervention could significantly reduce cognitive deficits in patients after heart surgery, enhancing their quality of life.

How similar studies have gone: While the approach of using thiamine for cognitive protection is innovative, similar studies have shown promising results in other conditions, suggesting potential efficacy.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with Coronary Heart Disease (CHD) scheduled for Bypass Grafting (CABG)
* Thiamine deficiency before CABG
* European System for Cardiac Operative Risk Evaluation II (EuroSCORE II) \>1.5%
* Off-pump surgery

Exclusion Criteria:

* Dementia at baseline \[Montreal Cognitive Assessment (MoCA) \<21 within 5 days before CABG\]
* Current in-take of thiamine
* Known thiamine allergy
* Uncontrolled blood glucose levels
* Unable to give consent due to illness
* History of hyperlactatemia
* Recent (within several years and/or up to the judgment of the PI/co-PIs) cerebral incidents (seizure or head trauma resulting in loss of consciousness and/or concussion)
* Stroke
* Diagnosed psychiatric diseases (clinical depression, schizophrenia, manic-depression)
* Patients with history of alcohol or substance abuse
* Acute or chronic infections (tuberculosis, hepatitis, or encephalopathy)
* Diagnosed neuro-degenerative diseases (Alzheimer's or Parkinson's disease)
* Chronic immunodeficiency (including HIV)
* Congenital brain deficits will also be excluded

Where it's running

  • UCLA
    Los Angeles, California, United States
    Recruiting

Study contacts

  • Principal investigator: Rajesh Kumar, PhD — University of California, Los Angeles
  • Study coordinator: Rajesh Kumar, PhD
  • Email: rkumar@mednet.ucla.edu
  • Phone: 310-206-1699

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.