SGLT2 Inhibitors, Ketones, and Cardiovascular Benefit Research Plan
Study Details
Study Description
Brief Summary
The study team will examine the effects of SGLT2i (and SGLT2i-induced increases in plasma ketone concentrations) on skeletal muscle and cardiac ketone uptake, skeletal muscle bioenergetics, cardiopulmonary exercise capacity, and patient-reported functional outcomes.
Condition or Disease | Intervention/Treatment | Phase |
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Early Phase 1 |
Detailed Description
The study team will examine effects of elevated plasma ketones caused by 12-week treatment with an SGLT2i (empagliflozin) treatment in participants with T2DM and HF. The study team will focus on three possible mechanisms of action for these effects and test the following:
(i) Skeletal muscle bioenergetics. Using 31P-MRS, the team will quantitate phosphocreatine [PCr], ATP, inorganic phosphate, phosphodiester, and intracellular pH. With 1H-MRS, and will measure intramyocellular lipid content at rest and ATPmax production after exercise. The team will examine the relationships between phosphorous metabolite concentrations, intramyocellular lipid content, and ATP generation before and after 12 weeks of SGLT2 inhibition.
(ii) Cardiopulmonary functional capacity.
(iii) Improvements in Patient-Reported Outcomes (PRO). The Patient-Reported Outcomes Measure Information System (PROMIS) Item Bank v2.0 - Physical Function - Short Form 20a will be used to evaluate self-reported physical function and well-being. This tool is a well-developed and validated method to obtain patient self-reported parameters of health in adults.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Experimental: Empagliflozin Group Subjects will be randomized 2:1 to receive empagliflozin, 25mg/day for 3 months |
Drug: Empagliflozin 25 MG
Empagliflozin 25MG will be administered orally once per day for 3 months
Other Names:
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Placebo Comparator: Placebo group Subjects will be randomized to receive the empagliflozin placebo for 3 months |
Drug: Placebo
The placebo will be administered orally once per day for 3 months
Other Names:
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Outcome Measures
Primary Outcome Measures
- Change in Phosphocreatine [Baseline to 3 months]
A measure of phosphocreatine change from baseline to study end
- Change in Adenosine Triphosphate (ATP) [Baseline to 3 months]
A measure of ATP change from baseline to study end
- Change in Inorganic Phosphate [Baseline to 3 months]
A measure of inorganic phosphate change from baseline to study end
- Change in Phosphodiester [Baseline to 3 months]
A measure of phosphodiester change from baseline to study end
- ATPmax production [Baseline to 3 months]
Exercise induced ATPmax production change
Secondary Outcome Measures
- Plasma Beta-hydroxybutyrate (β-OH-B) [Baseline to 3 months]
Change in β-OH-B
- Acetoacetate concentrations [Baseline to 3 months]
Change in acetoacetate concentrations
- Cardiopulmonary Function [Baseline to 3 months]
Change in cardiopulmonary functional capacity using oxygen uptake (VO2)
- 6 minute walk test [Baseline to 3 months]
Change in the distance that can be covered in a 6 minute walk test
- Patient-Reported Outcomes Measure Information System (PROMIS) [Baseline to 3 months]
Change in Physical function will be assessed by the PROMIS Item band v2.0 -Physical Function -Short Form 20a to evaluate patient-reported outcomes of physical function and well being.
Eligibility Criteria
Criteria
Inclusion Criteria:
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Type 2 Diabetes Mellitus
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Class II-III New York Heart Association (NYHA) heart failure and reduced ejection fraction (EF) <50%
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Age 18-80 years
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BMI 23-38 kg/m2
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Glycated hemoglobin (HbA1c) 5.5-10%
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Blood Pressure (BP) ≤ 145/85 mmHg
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Estimated glomerular filtration rate (eGFR) ≥30 ml/min•1.73 m2
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Stable dose of guideline-directed medications for heart failure
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Stable body weight (±4 pounds) over the last 3 months
Exclusion Criteria:
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Subjects treated with an SGLT2 inhibitor, a glucagon-like peptide-1 receptor agonist (GLP-1 RA) or pioglitazone
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Resting heart rate >120 bpm
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Systolic BP>180mmHg and/or diastolic BP >100mmHg
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Resting percentage of blood oxygen saturation (SpO2) < 85%
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Physical disability preventing safe performance of the exercise protocol.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
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1 | Texas Diabetes Institute - University Health System | San Antonio | Texas | United States | 78207 |
2 | University of Texas Health Science Center at San Antonio | San Antonio | Texas | United States | 78229 |
Sponsors and Collaborators
- The University of Texas Health Science Center at San Antonio
- Doris Duke Charitable Foundation
Investigators
- Principal Investigator: Carolina Solis-Herrera, MD, University of Texas Health Science Center San Antonio
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- HSC20210528H