Investigating a new treatment for severe hemophilia A in Chinese males

A Phase 3, Open-label, Multicenter, Pharmacokinetics, Efficacy, and Safety Study of a Recombinant Single-chain Factor VIII (rVIII-SingleChain) in Chinese Previously Treated Patients (PTPs) With Hemophilia A

Phase 3 Interventional CSL Behring · NCT06738485

This study is testing a new treatment for severe hemophilia A in Chinese men to see if a special factor VIII can help prevent bleeding better than current options.

Quick facts

PhasePhase 3
Study typeInterventional
Enrollment60 (estimated)
AgesN/A to 65 Years
SexMale
SponsorCSL Behring Industry-sponsored
Locations11 sites (Hefei, Anhui and 10 other locations)
Trial IDNCT06738485 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate the pharmacokinetics and efficacy of recombinant single-chain factor VIII (rVIII-SingleChain) in male Chinese participants with severe hemophilia A. Participants will receive prophylactic treatment with rVIII-SingleChain 2 to 3 times weekly, and the study will assess both the safety and effectiveness of this treatment approach. The research focuses on individuals who have previously been treated with FVIII products, bridging global clinical data with the Chinese population. The study is designed to provide insights into how this treatment works specifically in this demographic.

Who should consider this trial

Good fit: Ideal candidates are male Chinese participants aged 65 years or younger with severe hemophilia A and a history of FVIII product treatment.

Not a fit: Patients with known hypersensitivity to FVIII products or other coagulation disorders may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly improve the management of severe hemophilia A in Chinese patients.

How similar studies have performed: Other studies have shown promise with similar recombinant factor VIII treatments, indicating potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male Chinese participants \<= 65 years of age.
* Participants with severe hemophilia A (FVIII activity \< 1%).
* Participants who have received FVIII products for \>= 150 EDs (\>= 6 years of age) or \>= 50 EDs (\< 6 years of age).

Exclusion Criteria:

* Known hypersensitivity (allergic reaction or anaphylaxis) to any FVIII product or hamster protein.
* Known congenital or acquired coagulation disorder other than congenital FVIII deficiency.
* Currently receiving intravenous (IV) immunomodulating agents such as immunoglobulin or chronic systemic corticosteroid treatment.
* Receiving any cryoprecipitate, whole blood, or plasma within 30 days before administration of rVIII-SingleChain.
* Use of traditional or herbal Chinese medicine(s) with an impact on hemophilia, including coagulation, within 28 days before Day 1 and / or refusal to abstain from these during the study until the end of the participant's participation in the study.

Where this trial is running

Hefei, Anhui and 10 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Congenital Hemophilia A
Last reviewed 2026-06-13 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.