A First-in-Human Single and Multiple Ascending Dose Study of MT-251
A Phase 1, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Immunogenicity of Single and Multiple Doses of MT-251 in Healthy Participants
1 other identifier
interventional
70
1 country
1
Brief Summary
A Phase 1, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Immunogenicity of Single and Multiple Doses of MT-251 in Healthy Participants
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1 healthy-volunteers
Started Jan 2026
Longer than P75 for phase_1 healthy-volunteers
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
January 23, 2026
CompletedFirst Submitted
Initial submission to the registry
February 13, 2026
CompletedFirst Posted
Study publicly available on registry
February 20, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 8, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
March 8, 2027
February 25, 2026
January 1, 2026
1.1 years
February 13, 2026
February 23, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Number of Subjects with non-SAEs and SAES
Incidence of adverse events, clinically significant laboratory abnormalities, clinically significant electrocardiogram, vital signs, and physical examination abnormalities.
Up to 14 days post dose.
Study Arms (2)
Part 1- Single Ascending Dose
EXPERIMENTALTo assess the safety and tolerability of single intravenous/subcutaneous dose of MT-251.
Part 2- Multiple Ascending Dose
EXPERIMENTALTo assess the safety and tolerability of multiple intravenous/subcutaneous doses of MT-251.
Interventions
Eligibility Criteria
You may qualify if:
- Male or female participants between 19 and 55 years of age (inclusive) at the time of signing informed consent.
- Female participants must be of nonchildbearing potential, defined as postmenopausal or surgically sterile, and have official documentation, at least 6 months prior to the first dose.
- Male subjects must use highly effective forms of contraception during sexual intercourse with female partners of childbearing potential. A non-vasectomized, male subject must agree to use a condom with a chemical barrier method.
- Continuous non-smoker who has not used tobacco or nicotine-containing products for at least 3 months prior to the first dose of drug.
- Good general health.
- Able to provide written informed consent and understand and comply with the requirements of the study.
You may not qualify if:
- History or presence of any clinically significant organ system disease.
- Abnormal laboratory assessments, physical exam of ECG outside the normal range that is judged by the Investigator to be clinically significant.
- History of alcohol or drug abuse within the past 24 months.
- Current use or history of regular tobacco or nicotine-containing products within 3 months prior to screening.
- Administration of any prescription drug within 21 days or 5 half-lives (whichever is longer) of study drug administration; or over-the-counter drug within 7 days or 5 half-lives (whichever is longer) of study drug administration.
- Administration or use of any investigational drug or device within 30 days preceding the first does of study drug administration.
- Blood donation within 60 days prior to dosing or plasma donation within 14 days prior to dosing.
- Sensitivity to any of the study drugs, or components thereof, or drug or other allergy that in the opinion of the Investigator or Sponsor Medical Monitor, contraindicates participation in the study.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Mirador Clinical Department
San Diego, California, 92121, United States
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR
- Masking Details
- Double-Blind
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
February 13, 2026
First Posted
February 20, 2026
Study Start
January 23, 2026
Primary Completion (Estimated)
March 8, 2027
Study Completion (Estimated)
March 8, 2027
Last Updated
February 25, 2026
Record last verified: 2026-01
Data Sharing
- IPD Sharing
- Will not share