Study of the Acute Effects of Triheptanoin in Heart Failure (ACETO-TCA)

This study is currently recruiting participants.
Verified February 2013 by University of Texas Southwestern Medical Center
Sponsor:
Information provided by (Responsible Party):
Aslan Turer, University of Texas Southwestern Medical Center
ClinicalTrials.gov Identifier:
NCT01787851
First received: February 6, 2013
Last updated: February 8, 2013
Last verified: February 2013

February 6, 2013
February 8, 2013
February 2013
February 2014   (final data collection date for primary outcome measure)
Cardiac output/index [ Time Frame: 6 hours ] [ Designated as safety issue: No ]
The main outcome of interest is the change in cardiac index over the first 6 hours of the study period (before initiation of any other vasoactive medications). Pre-and post-cardiac index will be compared with a paired t-test. With 10 patients per study group, we have 80% power to detect a clinically significant 20% difference (0.4L/min/m2) in cardiac index between treatment assignments. Assuming the need for a non-parametric analysis a "standard" 20% increase in sample size will need sought. This yields a final 12 patient per group (n=24 total) sample size
Same as current
Complete list of historical versions of study NCT01787851 on ClinicalTrials.gov Archive Site
Cardiac Output/index and pulmonary capillary wedge pressure [ Time Frame: 5 days ] [ Designated as safety issue: No ]
Same as current
Not Provided
Not Provided
 
Study of the Acute Effects of Triheptanoin in Heart Failure
Assessment of the Clinical Effects of Triheptanoin Oil to Target Cardiac Anaplerosis in Congestive Heart Failure- Acute Study

Patients with dilated cardiomyopathy who present for indwelling right heart catheterization will be enrolled and randomized to either control or triheptanoin oil for five days. Hemodynamics will be assess serially.

Consecutive patients with DCM presenting for a right heart catheterization will be enrolled. All patients will be presenting electively for hemodynamic assessment and will have their PA catheter left in place after their catheterization as part of their usual care. Post-procedure, patients will be monitored in the coronary care unit, which is routine for patients with these catheters. Patients will be approached for potential enrollment in the study protocol. The goal enrollment for this phase of the protocol is 24 patients (12 participants receiving triheptanoin and 10 receiving placebo).

Patients will randomly be assigned to receive either triheptanoin oil or control treatment (sugar syrup) four times a day one hour before meals and at night for five days. All patients will be given a low fat, low simple sugar diet to avoid potential substrate competition from high serum levels of fats and glucose for the duration of the study procedure. Participants will be blinded to their treatment assignment.

Treatment arm: The standard dose of triheptanoin oil for adults is 1-2gm/kg/24 hours. For purposes of this study, we will administer 0.25mg/kg four-times per day. The liquid study drug will be mixed into sugar-free, low fat yogurt, pudding or nutritional supplement shake, depending on patient preference.

Control arm: One tablespoon of sugar syrup will be mixed into sugar-free, low fat yogurt, pudding or nutritional supplement shake four-times per day before meals.

Thermodilution cardiac index and PCWP will be measured from the indwelling PA catheter at baseline and hourly for the first six hours. During this time, initiation or upward titration of vasodilator and inotropic mediations will be discouraged although the medications will be continued in patients previously on these medications. Patients requiring such vasoactive medications on an urgent basis will have been excluded from study participation (see below). After the first six hours, measurements will be recorded once a day, 90 minutes following ingestion of study medication for the four days of treatment, as well as for the following day off study medication (in order to assess off-treatment hemodynamics). Number and dose of intravenous vasoactive medications will be recorded daily.

The main outcome of interest is the change in cardiac index over the first 6 hours of the study period (before initiation of any other vasoactive medications). Pre-and post-cardiac index will be compared with a paired t-test. With 10 patients per study group, we have 80% power to detect a clinically significant 20% difference (0.4L/min/m2) in cardiac index between treatment assignments. Assuming the need for a non-parametric analysis a "standard" 20% increase in sample size will need sought.

Additionally, the change in cardiac output and PCWP over the five day study period will be compared between group assignments (control vs. triheptanoin oil). Either Friedman's test or ANOVA for repeated measures (depending on satisfaction of the normality assumption) will be employed to detect serial changes between each treatment. Between-group differences at each time-point will be assessed by a two-sample t-test or the Wilcoxon signed rank test. We will also measure off-treatment effects by comparing day 4 (final treatment day) cardiac output and PCWP with day 6 (one day off treatment).

Five (5) cc of blood will be collected into EDTA tubes from the PA catheter at baseline and hourly for the first six hours of the study. An additional 5cc of blood will be obtained on day 4 and day 5. Serum will be isolated and stored at -80C until completion of the study. At that time, the samples will be assayed for metabolic profiles, to include acylcarnitine and fatty acid metabolites. Prior work has demonstrated significant increases in serum odd-chain fatty acids, acyl-carnitines and ketones following ingestion.These data will inform on the pharmacodynamics of triheptanoin metabolism in the setting of HF. At baseline and on day 4 a urine sample will be obtained and assayed for species related to proprionate metabolism.

Interventional
Phase 1
Phase 2
Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Subject)
Primary Purpose: Treatment
  • Congestive Heart Failure
  • Non-ischemic Cardiomyopathy
Drug: Triheptanoin oil
  • Active Comparator: Triheptanoin oil
    The standard dose of triheptanoin oil for adults is 1-2gm/kg/24 hours. For purposes of this study, we will administer 0.25mg/kg four-times per day. The liquid study drug will be mixed into sugar-free, low fat yogurt, pudding or nutritional supplement shake, depending on patient preference.
    Intervention: Drug: Triheptanoin oil
  • Placebo Comparator: Simple sugar
    0.25mg/kg of sugar syrup will be mixed into sugar-free, low fat yogurt, pudding or nutritional supplement shake four-times per day before meals.
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruiting
24
February 2014
February 2014   (final data collection date for primary outcome measure)

Inclusion Criteria:

Patients will be eligible for inclusion in this protocol if they satisfy the following criteria:

  1. DCM with left ventricular ejection fraction (LVEF) ≤40%
  2. New York Heart Association (NYHA) class III-IV symptoms
  3. age ≥18
  4. an indwelling PA catheter
  5. and an anticipated clinical requirement for a PA catheter for at least five days.

Exclusion Criteria:

Patients will be ineligible for inclusion in this protocol if they have any of the following:

  1. urgent (<6 hr) need for (or increase in) inotropic support (INTERMACS profile 1)
  2. diabetes mellitus
  3. known disorder of the respiratory chain or mitochondrial cardiomyopathy
  4. significant hyperlipidemia with triglyceride value >300mg/dL
  5. normal cardiac index (>2.5L/min/m2) on initial right heart catheterization
  6. indwelling intra-aortic balloon pump
  7. chronic liver disease
  8. severe renal dysfunction (CKD stage IV-V) with creatinine clearance <30 mL/min/1.73m2
  9. more than moderate valvular stenosis or regurgitation
  10. pregnancy or breastfeeding
  11. peripartum cardiomyopathy diagnosed within the past year
  12. inability to provide informed consent
Both
18 Years and older
No
Contact: Aslan T Turer, MD, MHS 2146457558 aslan.turer@utsouthwestern.edu
Contact: Toni Halliburton 2146507500 toni.halliburton@utsouthwestern.edu
United States
 
NCT01787851
UTSW 65827-1
No
Aslan Turer, University of Texas Southwestern Medical Center
University of Texas Southwestern Medical Center
Not Provided
Principal Investigator: Aslan T Turer, MD, MHS UT-Southwestern
University of Texas Southwestern Medical Center
February 2013

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP