Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 18 to 55

MST-931 in healthy adults

Official title: A Phase Ia, Randomized, Double-blind, Placebo-controlled, Single Dose-escalation Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Immunogenicity of MST-931 in Healthy Adult Subjects

Run by Mabsoft Therapeutics (Shanghai) Co., Ltd. · NCT07903493 · Data updated 2026-11-12

This early-phase study tests a single subcutaneous dose of MST-931 to see if it is safe and how it behaves in the body in healthy adults.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years to 55 Years
SexAll
Enrollment32 (estimated)
SponsorMabsoft Therapeutics (Shanghai) Co., Ltd.
Industry-sponsored
Locations1 site (Herston, Queensland)
StatusRecruiting
StartedNovember 30, 2026
Main results expectedJuly 30, 2027
Study endsJuly 30, 2027
Registry record updatedNovember 3, 2026
Trial IDNCT07903493 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are healthy adults 18–55 years with BMI 18–32 kg/m² and no significant health issues.

Probably not a fit

Participants with underlying medical conditions or intolerance to monoclonal antibodies may not benefit and could be at higher risk.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 1a trial is a randomized, double-blind, placebo-controlled study in healthy volunteers aged 18–55. It will evaluate safety, tolerability, pharmacokinetics, pharmacodynamics, and immunogenicity after a single dose of MST-931 versus placebo. MST-931 is a monoclonal antibody being studied in healthy participants before testing in patients. The study uses dose-escalation or fixed-dose cohorts to characterize initial safety and biological responses.

Why it matters

Potential benefit: If successful, participants may experience no clinical benefit, but the information could support future studies in patients.

How similar studies have gone: Early monoclonal antibody studies in healthy volunteers have shown favorable safety profiles in many cases, though each drug is unique.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects must meet the following criteria to be eligible for study entry:

  1. Healthy male or female subjects age ≥ 18 and ≤ 55 years.
  2. Body Mass Index (BMI) ≥ 18 and ≤ 32 kg/m².
  3. Normal ECG, blood pressure, respiratory rate, temperature, and heart rate, unless the investigator considers any abnormality to be not clinically significant.
  4. Signed Informed consent form for participation in the study.

Exclusion Criteria:

* Subjects who meet any of the following criteria will be excluded from study entry

  1. Hypersensitivity to the Investigational Medicinal Product (IMP) or any of its components, to biological agents, or prior history of severe drug hypersensitivity reactions.
  2. History of clinically significant cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, immunologic, dermatologic, psychiatric or neurological disease, or other significant clinical findings within 3 months before screening.
  3. History of malignancy within 5 years prior to screening, with the exception of patients with a negligible risk of metastases or death and/or treated with expected curative outcome.
  4. Family history of premature Coronary Heart Disease.
  5. Pregnant or Breastfeeding subject, women with positive pregnancy test (hCG).
  6. Unlikely to comply with the clinical study protocol.

Where it's running

  • Q-Pharm Pty Ltd
    Herston, Queensland, Australia
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.