Thorough QT/QTc Study to Evaluate the Effects of Ecopipam (EBS-101) on Cardiac Repolarization

A Randomized, Double-Blind, Placebo- and Positive Controlled, Crossover, Thorough QT/QTc Study to Evaluate the Effects of a Therapeutic and Supratherapeutic Dose of Ecopipam (EBS-101) on Cardiac Repolarization in Healthy Subjects

Status

Completed

Phases

Phase 1

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05841160

Enrollment

Registered

2023-05-03

Start date

2023-03-15

Completion date

2023-05-12

Last updated

2023-06-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

QT/QTc

Brief summary

THOROUGH QT/QTc STUDY TO EVALUATE THE EFFECTS OF ECOPIPAM (EBS-101) ON CARDIAC REPOLARIZATION

Detailed description

This is a single-center, randomized, partially double-blind (open-label moxifloxacin), placebo- and positive-controlled, 4-way crossover study in healthy subjects. Following a 28 day screening period, eligible subjects will enter the clinical research unit (CRU) on Day -1. A total of 32 subjects will be randomized in a 1:1:1:1 ratio to 1 of 4 treatment sequences (8 subjects per treatment sequence). Subjects will receive the assigned study drug as a single oral dose in the morning on Day 1 of each treatment period (Day 1 \[Period 1\], Day 8 \[Period 2\], Day 15 \[Period 3\], and Day 22 \[Period 4\]) after an overnight fast. Subjects will have serially matched blood samples (for determination of plasma concentrations) and 12-lead ECGs collected at predose and up to 48 hours after each dose for C QTc analysis. Subjects will be discharged from the CRU 96 hours after the last dose of the study drug (Day 26). A follow-up telephone call will occur 5 ±2 days after discharge (Day 31 ±2).

Interventions

DRUGEcopipam Hydrochloride

oral tablets

DRUGMoxifloxacin

oral tablet

DRUGPlacebo

oral tablet

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

BASIC_SCIENCE

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to 55 Years

Healthy volunteers

Yes

Inclusion criteria

* Male or female of nonchildbearing potential * 18 to 55 years of age * BMI of 18 to 30 kg/m2, and weight of at least 50 kg for males and 45 kg for females. * Subject considered by the investigator to be in good general health as determined by medical history, clinical laboratory test results, vital sign measurements, 12-lead ECG results, and PE findings. * Male subjects with female partners of childbearing potential must agree to use a double-barrier method of contraception during the study and agree to continue the use of male contraception for at least 90 days after the last dose of study drug. * Male subjects must be willing to refrain from donating sperm during study participation and for 90 days after the last dose of study drug. * The subject is able to provide written informed consent and agrees to comply with all protocol requirements.

Exclusion criteria

* Female subjects of childbearing potential or who are currently pregnant or lactating * Subjects with a history of significant medical illness * Clinically significant abnormalities on screening tests/exams * History of or serious risk of committing suicide * Donation of plasma within 7 days prior to dosing * Donation of significant loss of blood within 30 days prior to dosing * Major surgery within 3 months or minor surgery within 1 month prior to CRU admission * Use of prohibited prescription, over-the-counter medications or natural health products * Alcohol-based products within 24 hours prior to check-in on Day -1 * Vaccinations within 72 hours prior to check-in on Day -1 * Subjects with a history of any clinically significant ECG or vital sign abnormalities or presence of any clinically significant ECG or vital sign abnormalities or changes at screening or on Day -1 * Positive test result for drugs of abuse, alcohol, or cotinine * Use of nicotine or nicotine-containing products within 90 days before the first dose of study drug. * Subjects with a history of excessive alcohol intake or abuse or drug addiction within the last year * Subjects with a history of allergy, allergic skin rash, asthma, or an intolerance, sensitivity, or photosensitivity to moxifloxacin or ecopipam * Subjects who have participated in a clinical research study involving the administration of an investigational or marketed drug or device within 30 days prior to the first dose or administration of a biological product in the context of a clinical research study within 90 days prior to the first dose * Subjects with prior exposure to ecopipam * Any subject who, in the opinion of the investigator, is not a suitable candidate for the study.

Design outcomes

Primary

Measure	Time frame	Description
Evaluate ecopipam's effect on the QTc interval after administration of therapeutic and supratherapeutic doses, compared to placebo as a negative control using C-QTc analysis.	Up to Day 25	ECGs and PK samples will be collected for up to 96 hours after each dose

Secondary

Measure	Time frame	Description
Evaluate the effect of ecopipam at a therapeutic dose on PR interval	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at a therapeutic dose on QRS interval	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at a therapeutic dose on T-wave morphology	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at a therapeutic dose on U wave presence	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at supratherapeutic dose on heart rate	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at supratherapeutic dose on PR interval	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at supratherapeutic dose on QRS interval	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at supratherapeutic dose on T-wave morphology	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effect of ecopipam at supratherapeutic dose on U wave presence	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the ECG assay sensitivity to detect a change in the QT interval corrected for heart rate using Fridericia's formula (QTcF interval) using 400 mg moxifloxacin as the positive control	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Evaluate the effects of ecopipam on the emergence of arrhythmias	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Describe the incidence of treatment-emergent adverse events after a single therapeutic dose of ecopipam	Up to Day 33	AEs will be collected throughout the duration of the study
Describe the incidence of treatment-emergent adverse events after a single supratherapeutic dose of ecopipam	Up to Day 33	AEs will be collected throughout the duration of the study
Describe the incidence of treatment-emergent adverse events after a single dose of moxifloxacin 400 mg	Up to Day 33	AEs will be collected throughout the duration of the study
Describe the Cmax of ecopipam after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of ecopipam after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of ecopipam after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of ecopipam after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of ecopipam after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of ecopipam after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of ecopipam after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of ecopipam after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of ecopipam after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of ecopipam after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of ecopipam after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of ecopipam after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of ecopipam after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of ecopipam after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of EBS-101-40853 after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of EBS-101-40853 after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of EBS-101-40853 after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of EBS-101-40853 after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of EBS-101-40853 after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of EBS-101-40853 after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of EBS-101-40853 after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of EBS-101-40853 after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of EBS-101-40853 after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of EBS-101-40853 after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of EBS-101-40853 after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of EBS-101-40853 after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of EBS-101-40853 after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of EBS-101-40853 after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of ecopipam glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of ecopipam glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of ecopipam glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of ecopipam glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of ecopipam glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of ecopipam glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of ecopipam glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of ecopipam glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of ecopipam glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of ecopipam glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of ecopipam glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of ecopipam glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of ecopipam glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of ecopipam glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of EBS-101-40853 glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of EBS-101-40853 glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of EBS-101-40853 glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of EBS-101-40853 glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of EBS-101-40853 glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of EBS-101-40853 glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of EBS-101-40853 glucuronide after single therapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of EBS-101-40853 glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of EBS-101-40853 glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of EBS-101-40853 glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of EBS-101-40853 glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of EBS-101-40853 glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Evaluate the effect of ecopipam at a therapeutic dose on heart rate	Up to Day 25	ECGs will be collected for up to 48 hours after each dose
Describe the t1/2 of EBS-101-40853 glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Cmax of moxifloxacin after a single dose of moxifloxacin 400 mg	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the Tmax of moxifloxacin after a single dose of moxifloxacin 400 mg	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUClast of moxifloxacin after a single dose of moxifloxacin 400 mg	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCinf of moxifloxacin after a single dose of moxifloxacin 400 mg	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the AUCext of moxifloxacin after a single dose of moxifloxacin 400 mg	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of moxifloxacin after a single dose of moxifloxacin 400 mg	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the t1/2 of moxifloxacin after a single dose of moxifloxacin 400 mg	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis
Describe the λz of EBS-101-40853 glucuronide after single supratherapeutic dose of ecopipam	Up to Day 33	17 blood samples will be collected at the indicated timepoints for pharmacokinetic analysis

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026