Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of E2609 in Healthy Adult Male Japanese and White Subjects

Study Overview
=================
Brief Summary
-----------------
This study is primarily designed to bridge the pharmacokinetics (PK) and safety data for E2609 between Japanese subjects and non-Japanese (ie, white) subjects. To bridge these PK characteristics, the proposed study includes a cohort of white subjects treated for comparison with the cohort of Japanese subjects treated at the same dose. This comparison serves as a key PK bridge in assessing ethnic factors that may contribute to differences in plasma concentrations. Pharmacokinetic assessments in the proposed study will include confirmation of dose proportionality in Japanese subjects. This study will also evaluate safety and tolerability in Japanese subjects.

Official Title
-----------------
A Randomized, Double-Blind, Placebo-Controlled, Single Oral Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of E2609 in Healthy Adult Male Japanese and White Subjects

Conditions
-----------------
Healthy Subjects

Intervention / Treatment
-----------------
* Drug: E2609
* Drug: Placebo


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: The subject must meet all of the following criteria in order to be included in the study. Japanese Subjects Only: Birth in Japan to Japanese parents and grandparents of Japanese descent Have been living outside Japan for less than 5 years Lifestyle, including diet, has not changed significantly since leaving Japan White Subjects Only: A person having origins in any of the original peoples of Europe, the Middle East, or North Africa based on documented subject self-report All Subjects: Healthy male, 30 to 60 years inclusive, at the time of informed consent BMI of 18 to 32 kg/m2 inclusive at Screening Subjects must have had a successful vasectomy (confirmed azoospermia) or they and their female partners must not be of childbearing potential or must be practicing highly effective contraception (i.e. condom plus spermicide, condom plus diaphragm with spermicide, intrauterine device starting for at least one menstrual cycle before starting study drug[s]) and throughout the study period and for 30 days after study drug discontinuation. No sperm donation is allowed during the study period and for 30 days after study drug discontinuation. Exclusion Criteria: Subjects who meet any of the following criteria will be excluded from this study: Any history of seizures or epilepsy Any medical condition which, in the opinion of the investigator has high risk of seizures Any history of cerebrovascular disease A history of prolonged QTc interval Any other clinically significant ECG abnormalities History of risk factors for torsade de pointes or the use of medications that prolonged the QT/QTc interval Heart rate less than 50 or greater than 100 beats/min History of ischemic heart disease Persistent systolic blood pressure (BP) greater than 140 mmHg or less than 90 mmHg and diastolic BP greater than 90 mmHg or less than 60 mmHg Left bundle branch block Evidence of clinically significant disease Any laboratory abnormalities considered clinically significant Clinically significant illness which requires medical treatment Any history of abdominal surgery that may affect study drugs Hypersensitivity to the study drug Known to be HIV positive Active viral hepatitis History of drug or alcohol dependency or abuse within approximately the last 2 years Scheduled for surgery during the study Engagement in strenuous exercise within 2 weeks before dosing (eg, marathon runners, weight lifters) Currently enrolled in another clinical trial or used any investigational drug or device within 30 days before informed consent

Ages Eligible for Study
-----------------
Minimum Age: 30 Years
Maximum Age: 60 Years

Sexes Eligible for Study
-----------------
Male

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: E2609 low-dose and placebo in healthy Japanese subjects<br>Cohort 1 will consist of Japanese subjects randomized to a low-dose of E2609 as an orally administered tablet along with subjects receiving matching placebo tablets (matched in number and appearance). | Drug: E2609<br> <br> Drug: Placebo<br>* E2609 low-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy Japanese subjects, E2609 high-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy White subjects<br>|
| Experimental: E2609 mid-dose and placebo in healthy Japanese subjects<br>Cohort 2 will consist of Japanese subjects randomized to a mid-dose of E2609 as an orally administered tablet along with subjects receiving matching placebo tablets (matched in number and appearance). | Drug: E2609<br> <br> Drug: Placebo<br>* E2609 low-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy Japanese subjects, E2609 high-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy White subjects<br>|
| Experimental: E2609 high-dose and placebo in healthy Japanese subjects<br>Cohort 3 will consist of Japanese subjects randomized to a high-dose of E2609 as an orally administered tablet along with subjects receiving matching placebo tablets (matched in number and appearance). | Drug: E2609<br> <br> Drug: Placebo<br>* E2609 low-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy Japanese subjects, E2609 high-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy White subjects<br>|
| Experimental: E2609 mid-dose and placebo in healthy White subjects<br>Cohort 4 will consist of White subjects randomized to a mid-dose of E2609 as an orally administered tablet along with subjects receiving matching placebo tablets (matched in number and appearance). | Drug: E2609<br> <br> Drug: Placebo<br>* E2609 low-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy Japanese subjects, E2609 high-dose and placebo in healthy Japanese subjects, E2609 mid-dose and placebo in healthy White subjects<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pharmacokinetics of E2609: Cmax |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: tmax |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: AUC(0-24h)+D90 |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: AUC(0-72h) |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: AUC(0-t) |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: AUC(0-inf) |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: AUC Metabolite Ratio |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: t1/2 |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: CL/F |  | Up to Day 10 (216 hours postdose) | 
| Pharmacokinetics of E2609: V/F |  | Up to Day 10 (216 hours postdose) | 
| To evaluate the safety and tolerability of E2609 | Safety will be assessed by monitoring and recording all adverse events (AEs), serious adverse events (SAEs), regular monitoring of hematology, blood chemistry, urine values, regular measurement of vital signs, ECGs and performance of physical examinations | Baseline and up to 30 days from last dosing of subject | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pharmacodynamic effect of E2609: percent change from baseline of plasma (AB[1-x]): Amax |  | Baseline, Day 1, Day 2, Day 3, Day 4, Day 5, Day 7, and Day 10 | 
| Pharmacodynamic effect of E2609: percent change from baseline of plasma (AB[1-x]): T(Amax) |  | Baseline, Day 1, Day 2, Day 3, Day 4, Day 5, Day 7, and Day 10 | 
| Pharmacodynamic effect of E2609: percent change from baseline of plasma (AB[1-x]): AUAC(-24h-0h) |  | Baseline, Day 1, Day 2, Day 3, Day 4, Day 5, Day 7, and Day 10 | 
| Pharmacodynamic effect of E2609: percent change from baseline of plasma (AB[1-x]): AUAC(0-144h) |  | Baseline, Day 1, Day 2, Day 3, Day 4, Day 5, Day 7, and Day 10 | 
| Pharmacodynamic effect of E2609: percent change from baseline of plasma (AB[1-x]): Change in AUAC |  | Baseline, Day 1, Day 2, Day 3, Day 4, Day 5, Day 7, and Day 10 | 
| Change from baseline in QTcF obtained from ECGs extracted from Holter recordings | Holter ECG measurements will start on Day -1, at a time equivalent to 24 hours predose, and will continue for 24 hours postdose of Day 1, with interruptions allowed to adjust equipment. ECGs will be extracted from Holter monitors. | Baseline, Day 1, and Day 2 | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Clinical Trial, Phase I, Healthy Volunteers