Lumacaftor Yields Reversal of Impaired Cerebral Blood Flow in Heart Failure Patients (NCT07695090) | Clinical Trial Compass
RecruitingPhase 2
Lumacaftor Yields Reversal of Impaired Cerebral Blood Flow in Heart Failure Patients
Canada60 participantsStarted 2026-07
Plain-language summary
Cognitive impairment (CI) is highly prevalent in patients with heart failure with reduced ejection fraction (HFrEF), which has significant implications for disease management, quality of life and clinical outcomes. Currently, there are no specific treatments for CI aside from the current standard of care therapy for HF, making this a high unmet medical need. Impaired cerebral autoregulation is a proposed mechanistic factor that leads to cerebral hypoperfusion, ischemic damage and the development for CI. Preclinical data indicates that restoring CFTR-protein expression normalizes cerebral microvascular function and cerebral blood flow (CBF) in models of HF. The purpose of this study is to investigate whether CFTR-targeting therapy enhances cerebral perfusion and cognitive function in heart failure patients using the CFTR-corrector Lumacaftor.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Provide written informed consent
. Aged 18 years or older with stable heart failure NYHA class II-III, with reduced cardiac output and an EF of \<40% on optimal goal directed medical therapy as per CCS Guidelines and the AHA/ACC/HFSA Guidelines for the Management of Heart Failure
. No hospital admissions for inpatient care in 3 months prior to study
. CBF at screening of ≤45 mL/100g/min
. Able to comply with study procedures
. Female participants must fulfill at least one of the following:
. Negative serum pregnancy (β-hCG) test at screening if participant is of childbearing potential (defined as having gone through menarche and not postmenopausal)
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Efficacy of lumacaftor treatment in increasing cerebral blood flow versus placebo in HFrEF patients.
. Post-menopausal for a minimum of 1 year (defined as 12 consecutive months with no menses without an alternative medical cause) Be surgically sterile for a minimum of 6 months (achieved through partial/total hysterectomy, bilateral oophorectomy, or bilateral salpingectomy; note that tubal ligation is not considered a method of permanent sterilization)
Exclusion criteria
. Participants with symptomatic HF who have non-MRI compatible cardiac implantable electronic devices (CIEDs), such as a cardiac defibrillator or pacemaker, or in whom this is required within 3 months of the study
. Those requiring coronary revascularisation in 6 months following the study
. Participants with cystic fibrosis (CF) or any other condition that may require use of CFTR modulating agents
. A history of or known seropositivity for human immunodeficiency virus (HIV) and active hepatitis B and/or C infection
. Participants with moderate or severe hepatic disease (such as cirrhosis), or impaired liver function tests defined as serum ALT and/or AST \>3 x the upper limit of normal (ULN) or total bilirubin \>2 x ULN