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A Study to Investigate the Safety, Tolerability, and Pharmacokinetics of ME3241 Administered Intravenously in Healthy Adult Participants

A Phase 1, First-in-Human, Single-Center, Randomized, Double-Blind, Placebo-Controlled, Single and Multiple Dose Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of ME3241 Administered Intravenously in Healthy Adult Participants

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07422207
Enrollment
104
Registered
2026-02-19
Start date
2026-03-23
Completion date
2027-07-01
Last updated
2026-04-06

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

Conditions

Healthy Volunteers

Brief summary

A Study to Investigate the Safety, Tolerability, and Pharmacokinetics of ME3241 Administered Intravenously in Healthy Adult Participants

Interventions

BIOLOGICALME3241

Part 1 (single ascending dose): Participants will receive a single infusion of ME3241. Part 2 (multiple ascending dose): Participants will receive multiple infusions of ME3241. Part 3 (single dose for Japanese participants): Japanese participants will receive a single infusion of ME3241.

OTHERPlacebo

Part 1 (single ascending dose): Participants will receive a single infusion of placebo. Part 2 (multiple ascending dose): Participants will receive multiple infusions of placebo. Part 3 (single dose for Japanese participants): Japanese participants will receive a single infusion of placebo.

Sponsors

Meiji Pharma USA Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
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

* Participant must be 18 to 55 years of age, inclusive, at the time of signing the informed consent. * Participant must be in good general health as determined by the investigator based on medical history, physical examination, vital signs, 12-lead electrocardiogram (ECG), and clinical laboratory tests. * Participant must have body weight \> 45 kg at the Screening Visit. * Participant must have a body mass index (BMI) between 18.0 and 30.0 kg/m\^2 at the Screening Visit. BMI = body weight (kg)/(height \[m\])\^2.

Exclusion criteria

* Participant with concurrent or history of potentially fatal infections such as opportunistic infections, including sepsis and systemic fungal infection. * Participant with history of pulmonary infiltrates or pneumonia within 6 months prior to the Screening Visit. * Participant with concurrent or history of autoimmune, cardiac, hepatic, renal, gastrointestinal, respiratory, endocrine, neurological, central nervous, mental disorders, and/or hematological function disorders, which, in the judgment of the investigator, may affect participation in this clinical study. * Participant with history and/or presence of malignancy of any organ system (including basal cell carcinoma of the skin), treated or untreated. Other protocol defined inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Incidence and severity of AEs and SAEsFrom baseline to 12 weeks after the last administrationEvaluation of the number and percentage of participants with AEs, treatment-emergent adverse events (TEAEs), and the number of TEAEs
Changes in vital signsFrom baseline to 12 weeks after the last administrationEvaluation of body temperature, blood pressure, and pulse
Changes in physical examinationsFrom baseline to 12 weeks after the last administrationEvaluation of the number and percentage of participants with normal/non-clinically significant abnormal or clinically significant abnormal results in physical examination
Changes in 12-lead ECGsFrom baseline to 12 weeks after the last administrationEvaluation of PR, QRSd, and QT/QTcF intervals
Changes in laboratory parametersFrom baseline to 12 weeks after the last administrationEvaluation of Hematology, Clinical chemistry, Coagulation, and Urinalysis parameters
Maximum observed serum concentration (Cmax)From baseline to 12 weeks after the last administrationEvaluation of the maximum observed serum concentration of ME3241
Area under the curve from time zero to the last quantifiable concentration (AUClast)From baseline to 12 weeks after the last administrationEvaluation of the area under the curve from time zero to the last quantifiable concentration
Area under the curve from time zero extrapolated to infinity (AUC0-∞)From baseline to 12 weeks after the last administrationEvaluation of the area under the curve from time zero extrapolated to infinity
Area under the curve over the dosing interval after multiple dose administration (AUCtau)From baseline to 12 weeks after the last administrationEvaluation of the area under the curve over the dosing interval after multiple dose administration
Apparent terminal elimination half-life (t1/2)From baseline to 12 weeks after the last administrationEvaluation of the apparent terminal elimination half-life

Countries

Australia

Contacts

CONTACTMeiji Pharma USA Inc. Study Lead
mpu.clinical@meiji.com+1 201-777-7133

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 7, 2026