You may qualify for the
FIXtendz clinical research
study if you:


Are a male at least 18 years old

  • Have severe hemophilia B and
    are currently free of inhibitor
  • Have no history of an
    allergic reaction to Factor IX
    (FIX) products

People who qualify will receive:

  • Investigational gene therapy
    (SB-FIX) for hemophilia B
  • Study-related medical care
  • Reimbursement for travel
    (Transportation assistance may
    be available)


Find a study doctor

If you think you may qualify for the FIXtendz study,  please complete this brief questionnaire. By answering these questions, you agree to be contacted by a study clinic for additional information about participating in this research study.