Clinical trial NCT05392959: Effect of the Antidiabetic Drug Dapagliflozin on the Coronary Macrovascular and Microvascular Function in Type 2 Diabetic Patients
Official title: Effect of the Antidiabetic Drug DAPAgliflozin on the Coronary Macrovascular and MICROvascular Function in Type 2 Diabetic Patients
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: PHASE4
Conditions: Diabetes Mellitus, Type 2
Keywords: Diabetes Mellitus, Type 2
Dapagliflozin
Physiological Effects of Drugs
Coronary Artery Disease
Microcirculation
Fraction Flow Reserve
Index of Microcirculatory Resistance
Coronary Flow Reserve
Lead sponsor: Centre Hospitalier Universitaire Saint Pierre
Sponsor class: OTHER
Collaborators: name: AstraZeneca
First posted: 2022-05-26
Enrollment: 4
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Cardiovascular events remain a major driver of morbidity and mortality in patients with type 2 diabetes mellitus. Diffuse coronary atherosclerosis, combined with impairment of the microcirculation are frequent even in asymptomatic patients and can lead to unfavourable outcomes. In recent years, novel classes of antidiabetic drugs have been introduced, with salutary effects on cardiovascular outcomes of diabetic patients. The sodium-glucose linked transporter 2 (SGLT2) inhibitors - gliflozins - bind to the SGLT2 receptors of the proximal tubule of the nephron and cause glycosuria. They have been shown to have favourable cardiovascular effects by reducing deaths from cardiovascular causes in type 2 diabetic patients.

Moreover, dapagliflozin reduces hospitalisation for heart failure in type 2 diabetic heart failure patients with and without reduced ejection fraction and reduces cardiovascular death and all causes mortality in those with reduced ejection fraction.

It is currently unknown if this is mediated by improvement of coronary physiology both at the level of the epicardial coronary arteries as well as the coronary microcirculation.

The purpose of the study is to explore the impact of dapagliflozin on the coronary and microcirculatory function of type 2 diabetic patients.


Eligibility criteria: Inclusion Criteria:

* type 2 diabetes mellitus (T2DM) patients presenting with stable angina and a clinical indication for cardiac catheterization
* T2DM patients with non ST elevation myocardial infarction (NSTEMI) or unstable angina referred for cardiac catheterization
* Demonstration of coronary lesion(s) with non-significant fractional flow reserve (FFR) values (\>0.80), for which revascularisation is deferred
* Agreement to practice an acceptable method of birth control for women of childbearing potential
* Signed patient informed consent

Exclusion Criteria:

* Age \< 18 years old
* T2DM patients presenting with ST elevation myocardial infarction (STEMI)
* Pregnancy or breastfeeding
* Body mass index ≥45 kg/m2
* Creatinine clearance ≤45 ml/min/1.73 m2 (as calculated by Modification of Diet in Renal Disease Study (MDRD ) formula for estimated Glomerular filtration rate (GFR))
* Indication of liver disease, defined by serum levels of alanine aminotransferase, aspartate aminotransferase, or alkaline phosphatase above 3 x upper limit of normal during screening or run-in phase
* Uncontrolled hyperglycemia with glucose \>240 mg/dL after an overnight fast
* Stroke, or transient ischemic attack at presentation and up to 2 months prior to informed consent
* Alcohol or drug abuse within 3 months of informed consent that would interfere with trial participation or any ongoing condition leading to decreased compliance with study procedures or study drug intake
* Any uncontrolled endocrine disorder except type 2 diabetes
* Treatment with systemic steroids at time of informed consent or change in dosage of thyroid hormones within 6 weeks prior to informed consent
* Treatment with anti-obesity drugs 3 months prior to informed consent or any other treatment at time of screening leading to unstable body weight
* Medical history of cancer (except for basal cell carcinoma) and/or treatment for cancer within the last 5 years
* Blood dyscrasias or any disorders causing hemolysis or unstable red blood cells
* Bariatric surgery within the past two years and other gastrointestinal surgeries that induce chronic malabsorption
* Planned cardiac surgery or angioplasty within 3 months
* Any clinical condition that would jeopardize patient safety while participating in this clinical trial
* Life expectancy \< 3 years

Primary outcomes:
measure: the longitudinal change of the Fractional Flow Reserve (FRR)
timeFrame: up to 6 months
measure: the longitudinal change of the Coronary flow reserve (CFR)
timeFrame: up to 6 months
measure: the longitudinal change of the Index of Microvascular Resistance (IMR).
timeFrame: up to 6 months
Secondary outcomes:
Other outcomes:
Locations:
city: Brussels
country: Belgium
facility: CHU Saint Pierre
state: Bruxelles-Capitale, Région de;Brussels Hoofdstedelijk Gewest
Study officials:
affiliation: panagiotis.xaplanteris@stpierre-bru.be
name: Panagiotis Xaplanteris, MD, PhD
role: PRINCIPAL_INVESTIGATOR
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