Clinical trial Recruiting at 2 sites Observational Ages 12 and up

Marstacimab experiences in adolescents and adults with hemophilia

Official title: Adult and Adolescent Hemophilia Patients Treated With Marstacimab: a Patient Experience Registry

Run by Institute of Hematology & Blood Diseases Hospital, China · NCT06992076 · Data updated 2026-11-12

This registry will collect experiences from adolescents and adults with hemophilia who are receiving marstacimab to see if they prefer subcutaneous injections and to track treatment burden and bleeding rates.

More Hemophilia trials

Quick facts

Study typeObservational
Ages12 Years and up
SexAll
Enrollment100 (estimated)
SponsorInstitute of Hematology & Blood Diseases Hospital, China
Academic / other
Drugs / interventionsmarstacimab
Locations2 sites (Xiamen, Fujian and 1 other locations)
StatusRecruiting
StartedFebruary 15, 2026
Main results expectedAugust 31, 2027
Study endsDecember 31, 2028
Registry record updatedApril 29, 2026
Trial IDNCT06992076 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adolescents (12 to <18) and adults (≥18) with a diagnosis of hemophilia A or B who are prescribed marstacimab for routine prophylaxis and can provide informed consent and complete follow-up are ideal candidates.

Probably not a fit

Patients who are pregnant or breastfeeding, planning pregnancy within two months, have severe speech/vision/memory or cognitive impairment that prevents questionnaire completion, or cannot complete at least one month of follow-up are unlikely to benefit from participation.

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

What this trial studies

This observational patient registry enrolls adolescents (12–17) and adults (≥18) with hemophilia A or B who are prescribed marstacimab for routine prophylaxis. Participants complete the Marstacimab-Patient Preference Questionnaire (M-PPQ) after one month to record injection-route preferences and the Hemophilia Treatment Experience Measure (Hemo-TEM) after six months to measure treatment burden. The registry will also collect clinical data, including annualized bleeding rates, to explore real-world bleeding outcomes during marstacimab prophylaxis. Data are collected at participating hospitals in China during routine clinical visits without altering prescribed care.

Why it matters

Potential benefit: If successful, the registry could show whether subcutaneous marstacimab improves patient preference and reduces treatment burden, supporting more patient-friendly prophylaxis choices.

How similar studies have gone: Previous clinical trials of marstacimab and other TFPI-targeting agents have reported reductions in bleeding, but patient-preference and treatment-burden registries for marstacimab are relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

\- Participants with a diagnosis of hemophilia A or hemophilia B eligible to receive prophylaxis.

Clinical physicians prescribe marstacimab for routine prophylaxis treatment of hemophilia patients based on the actual conditions of the patients and in accordance with the approved indications of marstacimab.

Adolescent patients(12 to less than 18 years) and adult (18 years and older) patients.

Signed consent obtained before the study, participant or legally authorized representative, or participant's caregiver capable of giving signed informed consent.

Exclusion Criteria:

\- Those who are unable to complete at least one month follow-up based on the investigator's judgment.

Severe impairment of speech, vision, memory or cognition that affects communication and ability to complete questionnaires and follow-up visits.

Women of childbearing age who plan to become pregnant within the next 2 months, as well as women who are pregnant or breastfeeding.

Patients are participating in other clinical trials. There are other conditions that the investigator deems unsuitable for participation in this study.

Where it's running

  • The First Affiliated Hospital of Xiamen University
    Xiamen, Fujian, China
    Recruiting
  • Institute of haematology and Blood diseases hospital
    Tianjin, Tianjin Municipality, China
    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.