Improving Coronary Vascular Health in Women

Official title

ImproviNg Coronary Vascular Health in Women With Risk Factors fOR Myocardial Infarction Type 2 (INFORM-2)

Overview

Women with HIV have an increased risk of having a myocardial infarction (heart attack) as compared to women without HIV. One of the mechanisms underlying the increased risk of myocardial infarction among women with HIV may involve reduced ability to increase blood flow through large and small coronary arteries at times when increased flow of oxygen-carrying blood is needed. We are conducting a study randomizing women with HIV and either diabetes, chronic kidney disease, or both to health education alone or to health education plus referral to see either an Endocrinologist or a Nephrologist in a subspecialty clinic for consideration of treatment with medication in a class known as sodium glucose transporter 2 (SGLT2) inhibitors. SGLT2 inhibitors are clinically approved for use in patients with diabetes or chronic kidney disease but have been shown to be underutilized in people with HIV. One of our key analytic aims will be to test if SGLT2 inhibitor therapy results in improved blood flow through the large and small coronary arteries among women with HIV and either diabetes, chronic kidney disease, or both but who have no history of myocardial infarction. A second aim will be to test if subspecialty clinic referral (with or without SGLT2 inhibitor therapy prescription) results in improved blood flow through the large and small coronary arteries among the same group.

Detailed description

Women with HIV have an increased risk of having a myocardial infarction (heart attack) as compared to women without HIV. One of the mechanisms underlying the increased risk of myocardial infarction among women with HIV may involve reduced ability to increase blood flow through large and small coronary arteries at times when increased flow of oxygen-carrying blood is needed. We are conducting a study randomizing women with HIV and either diabetes, chronic kidney disease, or both to health education alone or to health education plus referral to see either an Endocrinologist or a Nephrologist in a subspecialty clinic for consideration of treatment with medication in a class known as sodium glucose transporter 2 (SGLT2) inhibitors. SGLT2 inhibitors are clinically approved for use in patients with diabetes or chronic kidney disease but have been shown to be underutilized in people with HIV. Prior to randomization, to confirm eligibility, participants will have undergone history, physical, lab tests, and cardiac positron emission tomography/computed tomography (PET/CT) scanning to confirm that there is a measure of impairment in stimulated blood flow through the large and small arteries of the heart. Randomized participants in both groups will be followed for 6 months and then will undergo repeat history, physical, laboratory testing, and repeat cardiac PET/CT scanning. One of our key analytic aims will be to test if SGLT2 inhibitor therapy results in improved blood flow through the large and small coronary arteries among women with HIV and either diabetes, chronic kidney disease, or both but who have no history of myocardial infarction. A second aim will be to test if subspecialty clinic referral (with or without SGLT2 inhibitor therapy prescription) results in improved blood flow through the large and small coronary arteries among the same group. We will also investigate effects of SGLT inhibitor therapy (and, separately, of subspecialty clinic referral) on fat tissue around the heart, as well as on blood and urine-based markers of metabolic disease and inflammation.

Interventions

• Other Health Education
  Health Education
• Other Subspecialty clinic referral
  This intervention will entail referred to establish clinical care in either the MGH Lipid and Metabolism Clinic or the MGH Renal Clinic for consideration of SGLT2 inhibitor therapy. SGLT2 inhibitor therapy (e.g. empagliflozin 10 mg by mouth daily or dapagliflozin 10 mg by mouth daily) may or may not be prescribed by the subspecialty clinician as part of routine clinical care, according to the clinician's clinical judgement.

Primary outcome measures

• Coronary Flow Reserve [Time frame: 24 weeks]
• Ectopic Adipose Tissue [Time frame: 24 weeks]

Secondary outcome measures (4)

• Kidney-related biomarkers [Time frame: 24 weeks]
• Metabolic biomarkers [Time frame: 24 weeks]
• Immune/inflammatory biomarkers [Time frame: 24 weeks]
• HIV-specific parameters [Time frame: 24 weeks]

Eligibility criteria

Inclusion criteria

• female sex-at-birth
• self-report of HIV on stable antiretroviral therapy ≥180 days
• age 45 -75 years
• at least 1 of the following 3 conditions: i) type 2 diabetes mellitus ii) estimated glomerular filtration rate 30-60 ml/min/1.73 m2 iii) urine albumin to creatinine ratio >30 mg/g
• coronary flow reserve <2.5 or stress myocardial blood flow <2.5 on screening cardiac positron emission tomography/computed tomography

Exclusion criteria

• current SGLT2 inhibitor use
• known allergy to SGLT2 inhibitor use
• type 1 diabetes or ketoacidosis prone diabetes (diabetes with a history of ketoacidosis)
• self-reported history of polycystic kidney disease
• self-reported history of myocardial infarction, stroke, or coronary revascularization
• stable or unstable angina
• self-reported history of heart failure
• hemoglobin A1c ≥8.5% at screen
• uncontrolled hypertension at screen, defined as systolic blood pressure ≥180 mm Hg and/or diastolic blood pressure ≥110 mm Hg
• estimated glomerular filtration rate <30 ml/min/1.73 m2
• currently receiving hemodialysis or peritoneal dialysis
• CD4 <400 cell/mm3
• current treatment with systemic (oral, IV, IM or intra-articular) steroids or anti-inflammatory/immune suppressant therapies (excluding topical therapies, UV therapy, ASA-derivatives, or NSAIDs) for any indication, including kidney disease
• pregnancy or breastfeeding
• known allergy to 13N Ammonia/82Rubidium or to Regadenoson/Adenosine
• concurrent enrollment in conflicting research study
• self-reported history of recurrent urinary tract-infections (≥2 urinary tract infections within 6 months or ≥3 within a year) and/or recurrent vaginal yeast infections (≥2 vaginal yeast infections within 6 months or ≥3 within a year)

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

Randomized

Model

Parallel assignment

Masking

Single blind

Primary purpose

Prevention

Study locations

United States · 1 center

• Massachusetts General Hospital — Boston

Identifiers

NCT: NCT06843902 · 2024P001952 · R01HL170905

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗