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Drug Interaction Study

A Phase 1, Sequential Drug Interaction Study to Evaluate the Effect of CYP3A4 and P-glycoprotein Inhibition by Itraconazole or Induction by Rifampicin on the Pharmacokinetics of Ecopipam and Its Metabolites in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06194864
Enrollment
45
Registered
2024-01-08
Start date
2024-01-18
Completion date
2024-05-22
Last updated
2024-09-19

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

Conditions

Drug Interaction

Brief summary

This is a single center, 2-Part, Phase 1, open-label, fixed-sequence, drug-drug interaction study designed to compare the PK of ecopipam when administered alone and in combination with itraconazole (Part 1) or rifampicin (Part 2) in healthy subjects.

Interventions

DRUGItraconazole

itraconazole 200 mg QD Days 6 to 16

DRUGrifampicin

rifampicin 600 mg QD Days 6 to 20

89.6 mg on Days 1 and 9 for Part 1 or 179.2 mg on Days 1 and 13 for Part 2

Sponsors

Syneos Health
CollaboratorOTHER
Cambridge Cognition Ltd
CollaboratorINDUSTRY
Emalex Biosciences Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Male subjects or femail subjects of non-childbearing potential * ≥18 and ≤55 years of age * BMI \>18.5 and \<30.0 kg/m2 and body weight ≥50.0 kg for males and ≥45.0 kg for females. * Subjects must be healthy, as determined by the Investigator, based on medical history, physical examination, ECG, vital signs, and standard panel of blood and laboratory tests at Screening. * Sexually active males must use a double barrier method of contraception during the study and for at least 90 days after the last dose of study drug. * Male subjects must be willing not to donate sperm until 90 days following the last study drug administration. * Willing to take off dentures or mouth piercing at the time of dosing.

Exclusion criteria

* History of significant medical illness * Clinically significant abnormalities on screening tests/exams * History of or significant risk of committing suicide * Donation of plasma within 7 days prior to dosing * Donation or significant loss of blood within 8 weeks prior to the first dosing * Major surgery within 3 months or minor surgery within 1 month prior to admission * Use of prohibited prescription, over-the-counter medications or natural health products * Female subjects who are currently pregnant or lactating * Positive pregnancy test * Positive urine drug screen, urine cotinine test, or alcohol breath test * Use of tobacco or nicotine products within 1 month prior to Screening * Significant alcohol consumption * History of drug abuse within the previous year, or a positive drug screen * History of allergy to study medications * Part 1 only: Presence of orthodontic braces or orthodontic retention wires * Recent participation in a clinical research study * Not suitable for study in the opinion of the Principal Investigator

Design outcomes

Primary

MeasureTime frameDescription
AUC0-inf of ecopipam when administered with itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-inf of ecopipam when administered without itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-inf of ecopipam when administered with rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-inf of ecopipam when administered without rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-t of ecopipam when administered with itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-t of ecopipam when administered without itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-t of ecopipam when administered with rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-t of ecopipam when administered without rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Cmax of ecopipam when administered with itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Cmax of ecopipam when administered without itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Cmax of ecopipam when administered with rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Cmax of ecopipam when administered without rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
T½ el of ecopipam when administered with itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
T½ el of ecopipam when administered without itraconazoleUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
T½ el of ecopipam when administered with rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
T½ el of ecopipam when administered without rifampicinUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis

Secondary

MeasureTime frameDescription
Respiratory rate pressure with itraconazole (breaths/minute)Up to Day 21Respiratory rate will be assessed as part of vital signs
Respiratory rate without itraconazole (breaths/minute)Up to Day 21Respiratory rate will be assessed as part of vital signs
Respiratory rate with rifampicin (breaths/minute)Up to Day 21Respiratory rate will be assessed as part of vital signs
Respiratory rate without rifampicin (breaths/minute)Up to Day 21Respiratory rate will be assessed as part of vital signs
Oral temperature with itraconazole (degrees Celsius)Up to Day 21Temperature will be assessed as part of vital signs
AUC0-inf of EBS-101-40853Up to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-inf of ecopipam glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-inf of EBS-101-40853 glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-t of EBS-101-40853Up to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-t of ecopipam glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-t of EBS-101-40853 glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Cmax of EBS-101-40853Up to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Heart rate without itraconazole (beats/minute)Up to Day 21Heart rate will be assessed as part of vital signs
Heart rate with rifampicin (beats/minute)Up to Day 21Heart rate will be assessed as part of vital signs
Heart rate without rifampicin (beats/minute)Up to Day 21Heart rate will be assessed as part of vital signs
Cmax of ecopipam glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Cmax of EBS-101-40853 glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
T½ el of EBS-101-40853Up to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
T½ el of ecopipam glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
T½ el of EBS-101-40853 glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-4 for ecopipamUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-4 for EBS-101-40853Up to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-4 for ecopipam glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
AUC0-4 for EBS 101-40853 glucuronideUp to Day 21Up to 38 samples will be collected at the indicated time points for pharmacokinetic analysis
Minimum Modified Observer's Assessment of Alertness/Sedation (MOAA/S) scoreUp to Day 21Score from 0-5 where 0 is no response and 5 is responds readily. MOAA/S measures will be recorded at the indicated timepoints
AUEC for Visual Analogue Scale (VAS)Up to Day 21Score from 0 - 100 where 0 is not sedated and 100 is very sedated. VAS measures will be recorded at the indicated timepoints.
Maximum sedation for Visual Analogue Scale (VAS)Up to Day 21Score from 0 - 100 where 0 is not sedated and 100 is very sedated. VAS measures will be recorded at the indicated timepoints.
AUEC for Reaction Time Index (RTI) scoreUp to Day 21Reaction time for subject to release the response button after presentation of target stimulus.
Maximum sedation for Reaction Time Index (RTI) scoreUp to Day 21Reaction time for subject to release the response button after presentation of target stimulus.
Safety and tolerability as demonstrated by AEs with itraconazoleUp to Day 30Subjects will be continually monitored for adverse events
Safety and tolerability as demonstrated by AEs without itraconazoleUp to Day 30Subjects will be continually monitored for adverse events
Safety and tolerability as demonstrated by AEs with rifampicinUp to Day 30Subjects will be continually monitored for adverse events
Safety and tolerability as demonstrated by AEs without rifampicinUp to Day 30Subjects will be continually monitored for adverse events
Safety and tolerability as demonstrated by Systolic blood pressure (SBP) and diastolic blood pressure (DBP) with itraconazole (mmHG)Up to Day 21Blood pressure will be assessed as part of vital signs
Safety and tolerability as demonstrated by Systolic blood pressure (SBP) and diastolic blood pressure (DBP) without itraconazole(mmHG)Up to Day 21Blood pressure will be assessed as part of vital signs
Safety and tolerability as demonstrated by Systolic blood pressure (SBP) and diastolic blood pressure (DBP) with rifampicin(mmHG)Up to Day 21Blood pressure will be assessed as part of vital signs
Safety and tolerability as demonstrated by Systolic blood pressure (SBP) and diastolic blood pressure (DBP) without rifampicin(mmHG)Up to Day 21Blood pressure will be assessed as part of vital signs
Heart rate with itraconazole (beats/minute)Up to Day 21Heart rate will be assessed as part of vital signs
Oral temperature without itraconazole (degrees Celsius)Up to Day 21Temperature will be assessed as part of vital signs
Oral temperature with rifampicin (degrees Celsius)Up to Day 21Temperature will be assessed as part of vital signs
Oral temperature without rifampicin (degrees Celsius)Up to Day 21Temperature will be assessed as part of vital signs
Electrocardiogram (ECG) parameters: PR, RR, QRS, QT, and QT interval corrected for heart rate using Fridericia's formula (QTcF) with itraconazole (Milliseconds)Up to Day 21Twelve-lead ECGs will be obtained at the indicated timepoints
Electrocardiogram (ECG) parameters: PR, RR, QRS, QT, and QT interval corrected for heart rate using Fridericia's formula (QTcF) without itraconazole (Milliseconds)Up to Day 21Twelve-lead ECGs will be obtained at the indicated timepoints
Electrocardiogram (ECG) parameters: PR, RR, QRS, QT, and QT interval corrected for heart rate using Fridericia's formula (QTcF) with rifampicin (Milliseconds)Up to Day 21Twelve-lead ECGs will be obtained at the indicated timepoints
Electrocardiogram (ECG) parameters: PR, RR, QRS, QT, and QT interval corrected for heart rate using Fridericia's formula (QTcF) without rifampicin (Milliseconds)Up to Day 21Twelve-lead ECGs will be obtained at the indicated timepoints
Safety and tolerability as demonstrated by the Columbia Suicide Severity Rating Scale (C-SSRS)Up to Day 21C-SSRS to be administered at the indicated timepoints
Values of white blood cell (WBC), neutrophils, lymphocytes, monocytes, eosinophils, basophils and platelets (1000/mm3)Up to Day 21Blood samples will be collected for the assessment of hematology parameters
Value of hematocrit (percent)Up to Day 21Blood samples will be collected for the assessment of hematology parameters
Value of hemoglobin (g/dL)Up to Day 21Blood samples will be collected for the assessment of hematology parameters
Red blood cell (RBC) count (M/mm3)Up to Day 21Blood samples will be collected for the assessment of hematology parameters
Values of sodium, potassium, chloride (mmol/L)Up to Day 21Blood samples will be collected for the assessment of clinical chemistry parameters
Values of urea, phosphorus, calcium, glucose, and total, direct and indirect bilirubin (mg/dL)Up to Day 21Blood samples will be collected for the assessment of clinical chemistry parameters
Values of albumin and total protein (g/dL)Up to Day 21Blood samples will be collected for the assessment of clinical chemistry parameters
Values of alanine aminotransferase (ALT), aspartate aminotransferase (AST),alkaline phosphatase (ALP), gamma glutamyl transferase (GGT), creatininephosphokinase (CPK), and creatinine (U/L)Up to Day 21Blood samples will be collected for the assessment of clinical chemistry parameters
Values of urine specific gravityUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urine pHUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urine glucoseUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urine proteinUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urine bloodUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urine ketonesUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urine bilirubin and nitriteUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urobilinogenUp to Day 21Urine samples will be collected for the assessment of urine parameters
Values of urine leukocyte esterase by dipstickUp to Day 21Urine samples will be collected for the assessment of urine parameters

Countries

Canada

Outcome results

None listed

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