Long QT Syndrome Type 3Phase 3NCT02300558
Effect of Eleclazine on Shortening of the QT Interval, Safety, and Tolerability in Adults With Long QT Syndrome Type 3
A Phase 3 study testing Eleclazine in people with Long QT Syndrome Type 3, run by Gilead Sciences at 12 sites in 8 countries.
Trial summary
The primary objective of this study is to evaluate the effect of oral eleclazine on mean daytime QTcF interval after 24 weeks of treatment with elecalzine in participants with long QT syndrome Type 3. During the single-blind treatment period (24 weeks), participants will receive eleclazine and/or eleclazine placebo. Read more about this study
- Who is it for?
- Ages 18 to 70 years
- Conditions the study is for
- Long QT Syndrome Type 3
- What is being tested?
- Eleclazine
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 41 participants
- Where
- 12 sitesin 8 countries
- Study dates
- 17 Dec 2014to 15 Feb 2017
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 70 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Individuals with an established diagnosis of LQT3 (by genotype testing)
- Mean (of triplicate) QTc interval ≥ 480 msec (or ≥ 460 msec, for individuals who are currently taking ranolazine or Class I antiarrhythmic drugs such as mexiletine) at 3 or more time points, determined by standard 12-lead ECG, at screening
Who cannot join
- Known mutations associated with type 1 long QT syndrome (LQT1) or type 2 long QT syndrome (LQT2)
- Known or suspected history of seizures or epilepsy
- History of heart failure defined as New York Heart Association (NYHA) Class IV and/or known left ventricular ejection fraction (EF) ≤ 45%
- Body mass index (BMI) ≥ 40 kg/m^2 at screening
- Severe renal impairment at screening (defined as an estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73m^2, using the 4 Variable Modification of Diet in Renal Disease (MDRD) equation, as determined by the study center)
- Abnormal liver function tests at screening, defined as alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 2 x upper limit of normal (ULN), or total bilirubin > 1.5 x ULN
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- An aborted cardiac arrest (ACA), implantable cardioverter-defibrillator (ICD) implantation, syncopal episode, or appropriate ICD therapy within 3 months prior to screening
- Any other condition or circumstance that in the opinion of the investigator would preclude compliance with the study protocol
- Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Trial locations and contacts
12 sites in 8 countries.
12 sites in 8 countries
United States3 sites
NYU Langone Medical Center
New York, New York, 10016
Mayo Clinic Rochester
Rochester, Minnesota, 55905
University of Rochester Medical Center
Rochester, New York, 14642
France3 sites
L'institut Du Thorax Nantes
Nantes, 44093
Groupe Hospitalier Bichat Claude Bernard
Paris, 75877
CHU Réunion Sud
Saint-Pierre, 97410
United Kingdom1 site
Barts and The London School of Medicine and Dentistry
London, EC1M 6BQ
About this study
Official title: A Phase 3, Single-Blind Study to Evaluate the Effect of Eleclazine (GS-6615) on Shortening of the QT Interval, Safety, and Tolerability in Subjects With Long QT Syndrome Type 3
The primary objective of this study is to evaluate the effect of oral eleclazine on mean daytime QTcF interval after 24 weeks of treatment with elecalzine in participants with long QT syndrome Type 3. During the single-blind treatment period (24 weeks), participants will receive eleclazine and/or eleclazine placebo. Following the single-blind treatment period, participants who have not permanently discontinued study drug will be eligible, at the discretion of the investigator, to continue receiving eleclazine during an open-label extension (OLE) phase.
- Conditions
- Long QT Syndrome Type 3
- Being tested
- Eleclazine, Eleclazine placebo
- Keywords
- Type 3 long QT syndrome (LQT3), Long QT syndrome, Congenital long QT, Sudden cardiac death
- Medical subject headings
- Long QT syndrome type 3, Long QT Syndrome, Death, Sudden, Cardiac
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
EleclazineDrug
Also called GS-6615
Tablets administered orally
Eleclazine placeboDrug
Tablets administered orally
| Study group | Role | What they receive |
|---|---|---|
| Eleclazine (Single-blind treatment phase) | Experimental | Eleclazine and/or eleclazine placebo up to Week 24 Receives: Drug: Eleclazine; Drug: Eleclazine placebo |
| Open-label Extension Phase | Experimental | Eligible participants will continue to receive open-label eleclazine until this drug is commercially available for the treatment of patients with LQT3, or until Gilead terminates development of eleclazine for the treatment of patients with LQT3, or the investigator deems it no longer in the participant's best interest. Receives: Drug: Eleclazine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change From Baseline in Mean Daytime QT Interval in Lead V5 Corrected for Heart Rate Using the Fridericia Formula (QTcF) Interval to Week 24 (Based on Standard 12-lead ECG Data)
- Baseline was the Day 1 value.
- QTcF is corrected QT interval using Fridericia's formula. QTcF = QT/cube root (RR), where RR is in seconds.
- AUC0-6 for QTcF was calculated using the trapezoidal rule, mean of triplicate values, and actual time (latest of triplicate times).
- Mean daytime QTcF (AUC0-6/6) was computed by dividing AUC0-6 by the time from dosing to the 6 hour postdose time point.
Measured: Baseline; Week 24
Secondary outcomes (3)
Change From Baseline in Mean Daytime QTcF Interval (AUC0-6/6) to Week 12 (Lead V5; Standard 12-lead ECG)
- Baseline was the Day 1 value.
- QTcF is corrected QT interval using Fridericia's formula. QTcF = QT/cube root (RR), where RR is in seconds.
- AUC0-6 for QTcF was calculated using the trapezoidal rule, mean of triplicate values, and actual time (latest of triplicate times) .
- Mean daytime QTcF (AUC0-6/6) was computed by dividing AUC0-6 by the time from dosing to the 6 hour postdose time point.
Measured: Baseline; Week 12
Change From Baseline in Mean Daily (Daytime and Nocturnal) QTcF Interval to Week 24 (Lead V5; Holter)
- Baseline was the Day 1 value.
- QTcF is corrected QT interval using Fridericia's formula. QTcF = QT/cube root (RR), where RR is in seconds.
- Mean daytime QTcF (AUC0-6/6) was computed by dividing AUC0-6 by the time from the first nonmissing nominal time point to the last nonmissing nominal time point, from predose to 6 hours postdose. Mean nocturnal QTcF (AUC0-6/6) was computed by dividing AUC0-6 by the time from the first nonmissing nominal time point to the last nonmissing nominal time point, from midnight to 6:00 AM. Daily was computed as the average of daytime (AUC0-6/6) and nocturnal (AUC0-6/6), with both values required to compute the average.
Measured: Baseline; Week 24
Change From Baseline in Mean Nocturnal QTcF Interval to Week 24 (Lead V5; Holter)
- Baseline was the Day 1 value.
- QTcF is corrected QT interval using Fridericia's formula. QTcF = QT/cube root (RR), where RR is in seconds.
- Mean nocturnal QTcF (AUC0-6/6) was computed by dividing AUC0-6 by the time from the first nonmissing nominal time point to the last nonmissing nominal time point, from midnight to 6:00 AM.
Measured: Baseline; Week 24
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Nov 2014 (estimated)
- Study start17 Dec 2014
- Primary completion12 Dec 2016
- Study completion15 Feb 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Long QT Syndrome Type 3Studies of the same condition, open and under way.
- More trials run by Gilead SciencesThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 41 participants (actual)
Sponsor and investigators
- Lead sponsor
- Gilead Sciences
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Gilead Study Director, Study director, Gilead Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02300558
- Sponsor's protocol ID
- GS-US-372-1234
- Other IDs
- 2014-000042-30, 2014
- Status last verified
- Dec 2017
- First submitted
- 21 Nov 2014
- Last updated
- 12 Jan 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 12 Jan 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 3, Single-Blind Study to Evaluate the Effect of Eleclazine (GS-6615) on Shortening of the QT Interval, Safety, and Tolerability in Subjects With Long QT Syndrome Type 3
- ClinicalTrials.gov ID
- NCT02300558
- Acronym / sponsor ID
- GS-US-372-1234
- Conditions
- Long QT Syndrome Type 3
- Keywords
- Type 3 long QT syndrome (LQT3), Long QT syndrome, Congenital long QT, Sudden cardiac death
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Terminated
- Enrolment
- 41 participants (actual)
- Lead sponsor
- Gilead SciencesIndustry (pharma, biotech, devices)
- Study start
- 17 Dec 2014 (actual)
- Primary completion
- 12 Dec 2016 (actual)
- Study completion
- 15 Feb 2017 (actual)
- First posted
- 25 Nov 2014 (estimated)
- Results
- Posted 12 Jan 2018
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The primary objective of this study is to evaluate the effect of oral eleclazine on mean daytime QTcF interval after 24 weeks of treatment with elecalzine in participants with long QT syndrome Type 3. During the single-blind treatment period (24 weeks), participants will receive eleclazine and/or eleclazine placebo. Following the single-blind treatment period, participants who have not permanently discontinued study drug will be eligible, at the discretion of the investigator, to continue receiving eleclazine during an open-label extension (OLE) phase.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Eleclazine (Single-blind treatment phase) | Experimental | Drug: Eleclazine, Drug: Eleclazine placeboEleclazine and/or eleclazine placebo up to Week 24 |
| Open-label Extension Phase | Experimental | Drug: EleclazineEligible participants will continue to receive open-label eleclazine until this drug is commercially available for the treatment of patients with LQT3, or until Gilead terminates development of eleclazine for the treatment of patients with LQT3, or the investigator deems it no longer in the participant's best interest. |
Who may qualify
- Ages
- 18 to 70 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Individuals with an established diagnosis of LQT3 (by genotype testing)
- Mean (of triplicate) QTc interval ≥ 480 msec (or ≥ 460 msec, for individuals who are currently taking ranolazine or Class I antiarrhythmic drugs such as mexiletine) at 3 or more time points, determined by standard 12-lead ECG, at screening
Key exclusion criteria (9 listed)
- Known mutations associated with type 1 long QT syndrome (LQT1) or type 2 long QT syndrome (LQT2)
- Known or suspected history of seizures or epilepsy
- History of heart failure defined as New York Heart Association (NYHA) Class IV and/or known left ventricular ejection fraction (EF) ≤ 45%
- Body mass index (BMI) ≥ 40 kg/m^2 at screening
- Severe renal impairment at screening (defined as an estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73m^2, using the 4 Variable Modification of Diet in Renal Disease (MDRD) equation, as determined by the study center)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| EleclazineAlso: GS-6615Tablets administered orally | Drug | Eleclazine (Single-blind treatment phase), Open-label Extension Phase |
| Eleclazine placeboTablets administered orally | Drug | Eleclazine (Single-blind treatment phase) |
Primary outcome
Change From Baseline in Mean Daytime QT Interval in Lead V5 Corrected for Heart Rate Using the Fridericia Formula (QTcF) Interval to Week 24 (Based on Standard 12-lead ECG Data)
Time frame: Baseline; Week 24
* Baseline was the Day 1 value. * QTcF is corrected QT interval using Fridericia's formula. QTcF = QT/cube root (RR), where RR is in seconds. * AUC0-6 for QTcF was calculated using the trapezoidal rule, mean of triplicate values, and actual time (latest of triplicate times). * Mean daytime QTcF (AUC0-6/6) was computed by dividing AUC0-6 by the time from dosing to the 6 hour postdose time point.
3 secondary outcomes
Change From Baseline in Mean Daytime QTcF Interval (AUC0-6/6) to Week 12 (Lead V5; Standard 12-lead ECG)
Time frame: Baseline; Week 12
Change From Baseline in Mean Daily (Daytime and Nocturnal) QTcF Interval to Week 24 (Lead V5; Holter)
Time frame: Baseline; Week 24
Change From Baseline in Mean Nocturnal QTcF Interval to Week 24 (Lead V5; Holter)
Time frame: Baseline; Week 24
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Jan 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Gilead Study Director study director
Gilead Sciences
12 sites in 8 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Eleclazine in people with Long QT Syndrome Type 3, run by Gilead Sciences at 12 sites in 8 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 12 Jan 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 12 sites in United States, France, Canada, Germany, Israel and 3 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 12 Jan 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change From Baseline in Mean Daytime QT Interval in Lead V5 Corrected for Heart Rate Using the Fridericia Formula (QTcF) Interval to Week 24 (Based on Standard 12-lead ECG Data) (time frame: Baseline; Week 24). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Jan 2018; AzTrials last refreshed its copy on 8 Nov 2026.