NCT05838287

Brief Summary

Our goal of the study is to learn the effects of the diabetes medication named Pioglitazone, in type-2 diabetic obese participants with Heart failure. The main question it aims to answer are:

  1. 1.To demonstrate that impaired mitochondrial function leading to reduced ATP generation plays a key pathophysiologic role in the development of heart failure with preserved ejection fraction (HFpEF) in obese type 2 diabetic (T2D) individuals.
  2. 2.To demonstrate that pioglitazone, improves diastolic (as well as systolic) function by improving myocardial insulin sensitivity and by reducing both myocardial and epicardial fat content.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
78

participants targeted

Target at P25-P50 for phase_4

Timeline
45mo left

Started Jul 2023

Longer than P75 for phase_4

Geographic Reach
1 country

1 active site

Status
recruiting

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 Progress44%
Jul 2023Jan 2030

First Submitted

Initial submission to the registry

April 10, 2023

Completed
21 days until next milestone

First Posted

Study publicly available on registry

May 1, 2023

Completed
2 months until next milestone

Study Start

First participant enrolled

July 10, 2023

Completed
6.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2029

Expected
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

January 1, 2030

Last Updated

August 27, 2025

Status Verified

August 1, 2025

Enrollment Period

6.1 years

First QC Date

April 10, 2023

Last Update Submit

August 26, 2025

Conditions

Outcome Measures

Primary Outcomes (2)

  • Change in Systolic function

    Measurement of change in systolic function of the heart using cardiac MRI

    Baseline and 6-months post treatment (approximately 24 weeks)

  • Change in Diastolic function

    Measurement of change in diastolic function of the heart using cardiac MRI

    Baseline and 6-months post treatment (approximately 24 weeks)

Secondary Outcomes (3)

  • Myocardial insulin sensitivity

    Baseline and 6-months post treatment (approximately 24 weeks)

  • Myocardial fat content

    Baseline and 6-months post treatment (approximately 24 weeks)

  • PCr:ATP ratio

    Baseline and 6-months post treatment (approximately 24 weeks)

Study Arms (2)

Pioglitazone Administration Group

ACTIVE COMPARATOR

Pioglitazone 15mg/day titrated to 30 mg/day at week 2 and to 45 mg/day at week 4

Drug: Pioglitazone

Placebo/Control Group

PLACEBO COMPARATOR

Placebo

Drug: Placebo

Interventions

Participants will be taking Pioglitazone tablets 1/day for 24 weeks.

Also known as: Actos
Pioglitazone Administration Group

Placebo for Pioglitazone

Also known as: Placebo tablet
Placebo/Control Group

Eligibility Criteria

Age30 Years - 70 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Provision of signed and dated informed consent form
  • Stated willingness to comply with all study procedures and availability for the duration of the study
  • Male or female, aged 30-70 years
  • Body Mass Index (BMI) of 27.5-40kg/m²
  • HbA1c of 6.5 to 10%
  • Blood pressure of less than or equal to 145/65mmHg
  • eGFR greater than 45 ml/min/1.73m²
  • Subject must have HFpEF (EF \> 50% by ECHO screening)
  • NYHA class II-III heart failure
  • Only T2D patients treated with diet/exercise, metformin, sulfonylurea, metformin/SU, DPP4i or insulin will be studied.
  • For females of reproductive potential: use of highly effective contraception for at least 1 month prior to screening and agreement to use such a method during study participation and for an additional \[4 weeks\] after the end of study participation.
  • For males of reproductive potential: use of condoms or other methods to ensure effective contraception with partner.

You may not qualify if:

  • Subjects with history of osteoporosis or proliferative diabetic retinopathy
  • Subjects with Heart failure due to restrictive or infiltrative cardiomyopathy, active myocarditis, constrictive pericarditis, severe valvular heart disease, etc. will be excluded
  • Patients with symptomatic coronary artery disease.
  • Subjects with significant change in diuretic management during the month prior to screening (defined by doubling of diuretic dose, or addition of another HF medication).
  • Subjects treated with a GLP-1 RA or thiazolidinedione.
  • Subjects treated with a SGLT2i
  • Pregnancy or lactation
  • Known allergic reactions to components of the study interventions.
  • Any metal plates, parts, screws, shrapnel, pins in body, or cardiac (heart) pacemaker

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Texas Diabetes Institute/UH

San Antonio, Texas, 78229-3900, United States

RECRUITING

MeSH Terms

Interventions

Pioglitazone

Intervention Hierarchy (Ancestors)

ThiazolidinedionesThiazolesSulfur CompoundsOrganic ChemicalsAzolesHeterocyclic Compounds, 1-RingHeterocyclic Compounds

Study Officials

  • Ralph A DeFronzo, MD

    University of Texas

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Sivaram Neppala, MD

CONTACT

Andrea Hansis-Diarte, MPH

CONTACT

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Masking Details
Neither the participant nor the investigator knows what treatment is given
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: double-blind placebo controlled, randomized clinical trial
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 10, 2023

First Posted

May 1, 2023

Study Start

July 10, 2023

Primary Completion (Estimated)

August 1, 2029

Study Completion (Estimated)

January 1, 2030

Last Updated

August 27, 2025

Record last verified: 2025-08

Data Sharing

IPD Sharing
Will not share

IPD data will not be available to other researchers.

Locations