A Study to Determine the Metabolism and Excretion of [14C]E2086 in Healthy Male Participants

NCT07308236 | Recruiting Phase 1 FDA Drug

• 1 other identifier: E2086-A001-004
• Study Type: interventional
• Target: 10
• Locations: 1 country
• Sites: 1

Brief Summary

The primary purpose of this study is to determine the metabolism and excretion of \[14C\]E2086 in healthy male participants.

Conditions

Healthy Volunteers

Outcome Measures

Primary Outcomes (24)

• Mass Balance Recovery of E2086, Expressed as Cumulative Percent of the Radiolabeled Dose

  Mass balance will be determined by pharmacokinetic (PK) analysis of \[14C\]E2086 and E2086 in the biological matrices.

  Day 1 up to Day 21

• Maximum Observed Concentration (Cmax) of [14C]E2086 for Total Radioactivity (TRA) in Plasma

  Day 1 up to Day 21

• Time to Reach Cmax (Tmax) of [14C]E2086 for TRA in Plasma

  Day 1 up to Day 21

• Area Under the Concentration-time Curve from Zero Time to Time of Last Quantifiable Concentration [AUC (0-t)] of [14C]E2086 for TRA in Plasma

  Day 1 up to Day 21

• Area Under the Concentration-time Curve from Zero Time Extrapolated to Infinite Time [AUC (0-inf)] of [14C]E2086 for TRA in Plasma

  Day 1 up to Day 21

• Terminal Elimination Phase Half-life (t1/2) of [14C]E2086 for TRA in Plasma

  Day 1 up to Day 21

• Cmax of [14C]E2086 for TRA in Whole Blood

  Day 1 up to Day 21

• Tmax of [14C]E2086 for TRA in Whole Blood

  Day 1 up to Day 21

• AUC (0-t) of [14C]E2086 for TRA in Whole Blood

  Day 1 up to Day 21

• AUC (0-inf) of [14C]E2086 for TRA in Whole Blood

  Day 1 up to Day 21

• t1/2 of [14C]E2086 for TRA in Whole Blood

  Day 1 up to Day 21

• Cmax of E2086 and its Metabolite M1 in Plasma Using liquid Chromatography Coupled With Mass Spectrometry (LC-MS/MS)

  Day 1 up to Day 21

• Tmax E2086 and its Metabolite M1 in Plasma Using LC-MS/MS

  Day 1 up to Day 21

• AUC (0-t) of E2086 and its Metabolite M1 in Plasma Using LC-MS/MS

  Day 1 up to Day 21

• AUC (0-inf) of E2086 and its Metabolite M1 in Plasma Using LC-MS/MS

  Day 1 up to Day 21

• t1/2 of E2086 and its Metabolite M1 in Plasma Using LC-MS/MS

  Day 1 up to Day 21

• Apparent Total Clearance (CL/F) of E2086 in Plasma Using LC-MS/MS

  Day 1 up to Day 21

• Apparent Volume of Distribution (Vz/F) at Terminal Phase of E2086 in Plasma Using LC-MS/MS

  Day 1 up to Day 21

• Metabolite Ratio (MRp) of E2086 and its Metabolite M1 in Plasma Using LC-MS/MS

  Day 1 up to Day 21

• Cumulative Amount Excreted in Urine from Zero Time to Time of Last Interval (Ae) of E2086 and its Metabolite M1 in Urine Using LC-MS/MS

  Day 1 up to Day 21

• Fraction of Dose Excreted in Urine from Zero Time to Time of Last Interval (Fe) of E2086 and its Metabolite M1 in Urine Using LC-MS/MS

  Day 1 up to Day 21

• Renal Clearance (CLR) of E2086 and its Metabolite M1 in Urine Using LC-MS/MS

  Day 1 up to Day 21

• MRu of E2086 and its Metabolite M1 in Urine Using LC-MS/MS

  Day 1 up to Day 21

• Percentage of Administered Radioactive Dose Excreted in Urine, Feces, and Toilet Tissue by TRA

  Day 1 up to Day 21

Secondary Outcomes (5)

• Characterization of Metabolites in Plasma, Urine, Feces After Administration of a Single Oral Dose of Radiolabeled [14C]E2086

  Up to 70 days

• Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)

  Up to 70 days

• Number of Participants With Abnormal Laboratory Parameter Values

  Up to 70 days

• Number of Participants With Clinically Significant Change in Vital Sign Values

  Up to 70 days

• Number of Participants With Clinically Significant Change in 12-Lead Electrocardiogram (ECG) Values

  Up to 70 days

Study Arms (1)

E2086

EXPERIMENTAL

Drug: E2086

Interventions

E2086 DRUG

E2086 oral capsule.

E2086

Eligibility Criteria

• Age: 18 Years - 55 Years
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Non-smoking and non-vaping, healthy male, age greater than or equal to (\>=) 18 years and less than or equal to (\<=) 55 years old at the time of informed consent
• Body Mass Index (BMI) \>=18 and less than (\<) 30 kilogram per square meter (kg/m\^2) at Screening
• Provide written informed consent
• Willing and able to comply with all aspects of the protocol

You may not qualify if:

• Have previously been dosed in more than 2 radiolabeled drug studies in the past 12 months. For participants who have previously been dosed in 2 or more radiolabeled drug studies within the last 12 months, the previous radiolabeled dose must be at least 4 months prior to check-in to the trial site where exposures are known to the investigator, or 6 months prior to check-in to the trial site for a radiolabeled drug trial where exposures are not known to the investigator. The total 12-month exposure from this trial and a maximum of 2 other previous radiolabeled studies must be within the CFR recommended levels considered safe, per US Title 21 CFR 361.1.
• Exposure to significant diagnostic or therapeutic radiation (eg, serial x-ray, computed tomography scan, barium meal) or current employment in a job requiring radiation exposure monitoring within 12 months prior to check-in.
• Males who have not had a successful vasectomy (confirmed azoospermia) or they and their female partners must meet the following criteria: not of childbearing potential or practicing highly effective contraception throughout the trial period and for 28 days after trial drug discontinuation. No sperm donation is allowed during the trial period and for 90 days after trial drug discontinuation.
• NOTE: All female partners of male participants will be considered to be of childbearing potential unless they are postmenopausal (amenorrheic for at least 12 consecutive months, in the appropriate age group, and without other known or suspected cause) or have been sterilized surgically (ie, bilateral tubal ligation, total hysterectomy, or bilateral oophorectomy, all with surgery at least 1 month before dosing). Examples of highly effective contraception include total abstinence, an intrauterine device, a double-barrier method (such as condom plus diaphragm with spermicide), a contraceptive implant, and oral contraceptive. Female partners of male participants who have not had a successful vasectomy, who use hormonal contraception, must be on the same hormonal contraceptive for 28 days before the male participants are dosed with trial drug, throughout the trial period and for 28 days afterwards.
• Clinically significant illness that requires medical treatment within 8 weeks or a clinically significant infection that requires medical treatment within 4 weeks of dosing.
• Evidence of disease that may influence the outcome of the trial within 4 weeks before dosing, eg, psychiatric disorders and disorders of the gastrointestinal tract, liver, kidney, respiratory system, endocrine system, hematological system, neurological system, orbcardiovascular system.
• Any history of surgery that may affect PK profiles of E2086 (eg, hepatectomy, nephrectomy, digestive organ resection) or participants who have a congenital abnormality in metabolism at Screening.
• Any clinically abnormal symptom or organ impairment found by medical history at Screening, and physical examinations, vital signs, electrocardiogram (ECG) findings, or laboratory test results that require medical treatment at Screening or Baseline.
• Initiation of statin therapy, or a change to a different statin, or an increase in the dose of a statin within the 6 months before the planned start of the study
• A prolonged QT/QTc interval (QTcF greater than (\>) 450 millisecond \[ms\]) as demonstrated by the mean of triplicate ECGs (recorded at least 1 min apart) at Screening or Baseline
• Systolic blood pressure \>130 millimeter of mercury (mmHg) or diastolic blood pressure \>85 mmHg at Screening or Baseline
• Heart rate \<50 beats/min or \>100 beats/min at Screening or Baseline
• Any lifetime history of suicidal ideation or any lifetime history of suicidal behavior as indicated by the Columbia-Suicide Severity Rating Scale (C-SSRS).
• Any lifetime history of psychiatric disease (including, but not limited to, depression or other mood disorders, bipolar disorder, psychotic disorders, including schizophrenia, panic attacks, and anxiety disorders \[if ever treated with medication\]).
• Known history of clinically significant drug allergy at Screening or Baseline

Sponsors & Collaborators

• Eisai Inc.: lead

Study Sites (1)

Fortrea Clinical Research Unit Inc.

Madison, Wisconsin, 53704, United States

RECRUITING

Central Study Contacts

Eisai Medical Information

CONTACT

+1-888-274-2378; esi_medinfo@eisai.com

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: December 15, 2025
• First Posted: December 29, 2025
• Study Start: December 31, 2025
• Primary Completion: February 23, 2026
• Study Completion: February 23, 2026
• Last Updated: March 5, 2026

Record last verified: 2025-12

Data Sharing

• IPD Sharing: Will share

Locations

US (1)