CompletedPhase 4

Diltiazem in Jervell and Lange-Nielsen Syndrome

United States1 participantsStarted 2024-10-16

Plain-language summary

This study will test the effect of diltiazem, a calcium channel blocking drug, on the QT interval in patients with Jervell and Lange-Nielsen syndrome. This will be a single IV dose and acute effects (within minutes) will be observed.

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: * Age greater than 18 years * Genetically confirmed diagnosis of Jervell and Lange-Nielsen syndrome * Able to provide written informed consent Exclusion Criteria: * Known hypersensitivity to diltiazem * Pregnancy * Congestive heart failure, angina, preexcitation, or chronic obstructive pulmonary disease * Sick sinus syndrome or atrioventricular block in the absence of a pacemaker/defibrillator * Any clinically significant ongoing medical or surgical condition that might jeopardize the subject's safety or interfere with the conduct of the study in the judgement of the investigator * Baseline systolic blood pressure less than 100 Hg or diastolic blood pressure less than 60 Hg

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

QT Interval

Timeframe: Baseline

QT Interval

Timeframe: 5 minutes

Trial details

NCT IDNCT06534671

SponsorVanderbilt University Medical Center

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2024-10-23

Results submitted2025-09-03

View on ClinicalTrials.gov More Jervell and Lange Nielsen Syndrome trials

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.