Hemophilia BPhase 1NCT03961243
Lentiviral FIX Gene Therapy
A Phase 1 study testing YUVA-GT-F901 in people with Hemophilia B, run by Shenzhen Geno-Immune Medical Institute at 1 site in China.
Trial summary
This study is a Phase I trial using an advanced lentiviral vector to deliver a functional gene for human clotting factor IX into patients with hemophilia B, to evaluate the safety and efficacy of infusion of lentiviral gene modified autologous stem cells in patients. Read more about this study
- Who is it for?
- Ages 2 to 65 years
- Conditions the study is for
- Hemophilia B
- What is being tested?
- YUVA-GT-F901
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 10 participants
- Where
- 1 siteChina
- Study dates
- 1 Jun 2027to 31 Dec 2028
- Phase
- Phase 1
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 2 to 65 years
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- 1. Able to provide informed consent and comply with requirements of the study. 2. Males ≥2 years with confirmed diagnosis of hemophilia B (endogenous factor IX ≤2 IU/dL or ≤2% of normal).
- 3. A minimum average of 4 bleeding events per year requiring episodic treatment of factor IX infusions or prophylactic factor IX infusions.
- 4. No measurable factor IX inhibitor as assessed by the central laboratory and have no prior history of inhibitors to factor IX protein.
- 5. Agree to use reliable barrier contraception until 3 consecutive samples are negative for vector sequences.
Who cannot join
- 1. Significant liver dysfunction as defined by abnormal alanine transaminase, bilirubin and alkaline phosphatase.
- 2. History of inhibitor against factor IX. 3. Evidence of active hepatitis B or C and currently on antiviral therapy. 4. Have serological evidence of HIV-1 or HIV-2 with CD4 counts ≤200/mm3 (subjects who are HIV+ and stable with CD4 count >200/mm3 and undetectable viral load are eligible to enroll).
- 5. Any evidence of active infection or any immunosuppressive disorder. 6. Participated in a gene transfer trial within the last 6 months or in a clinical trial with an investigational drug within the last 12 weeks.
- 7. Unable or unwilling to comply with study assessments.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
China1 site
Shenzhen Geno-immune Medical Institute
Shenzhen, Guangdong, 518000
Lung-Ji Chang, Ph.D, +86 0755-86573763, c@szgimi.org
About this study
Official title: Lentiviral FIX Gene Therapy for Hemophilia B
This study is a Phase I trial using an advanced lentiviral vector to deliver a functional gene for human clotting factor IX into patients with hemophilia B, to evaluate the safety and efficacy of infusion of lentiviral gene modified autologous stem cells in patients.
Read the detailed description
Important Regulatory Notice:
This trial record is only for global academic information registration on ClinicalTrials.gov. Neither the sponsor Beijing Meikang Jimian Biotechnology Co., Ltd. nor collaborator Shenzhen Geno-Immune Medical Institute has obtained NMPA clinical trial approval or clinical technology filing permission to carry out interventional cell therapy trials in mainland China.
ClinicalTrials.gov registration alone does not represent legal approval by Chinese health and drug regulatory authorities.
Hemophilia B is a genetic bleeding disorder caused by the lack of ability to produce blood-clotting factor IX (FIX). Individuals with hemophilia B suffer repeated bleeding episodes, which can cause chronic joint disease and sometimes even death due to the inability for blood to clot efficiently. The current treatment is intravenous infusion of clotting factor concentrates, either prophylactically or in response to bleeding. The procedure is life time long and expensive while still cannot achieve a cure.Gene therapy is a novel technology that has been successfully demonstrated in a number of clinical studies for diseases such as cancer and genetic diseases. In this study, an advanced lentiviral vector system NHP/TYF will be used to deliver a functional FIX gene to overcome human clotting FIX gene defect in patients with hemophilia B. This study is a Phase I trial evaluating the safety and efficacy for infusion of gene modified autologous stem cells in patients with hemophilia B.
- Conditions
- Hemophilia B
- Being tested
- YUVA-GT-F901
- Keywords
- Hemophilia B, factor IX, Gene therapylentiviral vector
- Medical subject headings
- Hemophilia B
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
YUVA-GT-F901Biological
Lentiviral factor IX gene modified autologous hematopoietic and mesenchymal stem cells
| Study group | Role | What they receive |
|---|---|---|
| YUVA-GT-F901 | Experimental | Gene transfer to treat Hemophilia B Receives: Biological: YUVA-GT-F901 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of participants experiencing drug-related adverse events
As assessed by physical exam, vital signs, standard clinical labs, and Bethesda assay for FIX inhibitor
Measured: a year
Secondary outcomes (1)
Changes from baseline in circulating FIX activity (IU/dL or % normal)
Measured: a year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 May 2019
- Study start1 Jun 2027 (estimated)
- Primary completion31 May 2028 (estimated)
- Study completion31 Dec 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hemophilia BStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 10 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Shenzhen Geno-Immune Medical Institute
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Lung-Ji Chang, PhD, Principal investigator, Shenzhen Geno-Immune Medical Institute
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03961243
- Sponsor's protocol ID
- GIMI-IRB-19002
- Status last verified
- Aug 2026
- First submitted
- 22 May 2019
- Last updated
- 26 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 26 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Lentiviral FIX Gene Therapy for Hemophilia B
- ClinicalTrials.gov ID
- NCT03961243
- Acronym / sponsor ID
- GIMI-IRB-19002
- Conditions
- Hemophilia B
- Keywords
- Hemophilia B, factor IX, Gene therapylentiviral vector
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 10 participants (estimated)
- Lead sponsor
- Shenzhen Geno-Immune Medical InstituteUniversity, hospital or other
- Study start
- 1 Jun 2027 (estimated)
- Primary completion
- 31 May 2028 (estimated)
- Study completion
- 31 Dec 2028 (estimated)
- First posted
- 23 May 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study is a Phase I trial using an advanced lentiviral vector to deliver a functional gene for human clotting factor IX into patients with hemophilia B, to evaluate the safety and efficacy of infusion of lentiviral gene modified autologous stem cells in patients.
Detailed description
Important Regulatory Notice:
This trial record is only for global academic information registration on ClinicalTrials.gov. Neither the sponsor Beijing Meikang Jimian Biotechnology Co., Ltd. nor collaborator Shenzhen Geno-Immune Medical Institute has obtained NMPA clinical trial approval or clinical technology filing permission to carry out interventional cell therapy trials in mainland China.
ClinicalTrials.gov registration alone does not represent legal approval by Chinese health and drug regulatory authorities.
Hemophilia B is a genetic bleeding disorder caused by the lack of ability to produce blood-clotting factor IX (FIX). Individuals with hemophilia B suffer repeated bleeding episodes, which can cause chronic joint disease and sometimes even death due to the inability for blood to clot efficiently. The current treatment is intravenous infusion of clotting factor concentrates, either prophylactically or in response to bleeding. The procedure is life time long and expensive while still cannot achieve a cure.Gene therapy is a novel technology that has been successfully demonstrated in a number of clinical studies for diseases such as cancer and genetic diseases. In this study, an advanced lentiviral vector system NHP/TYF will be used to deliver a functional FIX gene to overcome human clotting FIX gene defect in patients with hemophilia B. This study is a Phase I trial evaluating the safety and efficacy for infusion of gene modified autologous stem cells in patients with hemophilia B.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| YUVA-GT-F901 | Experimental | Biological: YUVA-GT-F901Gene transfer to treat Hemophilia B |
Who may qualify
- Ages
- 2 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (4 listed)
- 1. Able to provide informed consent and comply with requirements of the study. 2. Males ≥2 years with confirmed diagnosis of hemophilia B (endogenous factor IX ≤2 IU/dL or ≤2% of normal).
- 3. A minimum average of 4 bleeding events per year requiring episodic treatment of factor IX infusions or prophylactic factor IX infusions.
- 4. No measurable factor IX inhibitor as assessed by the central laboratory and have no prior history of inhibitors to factor IX protein.
- 5. Agree to use reliable barrier contraception until 3 consecutive samples are negative for vector sequences.
Key exclusion criteria (4 listed)
- 1. Significant liver dysfunction as defined by abnormal alanine transaminase, bilirubin and alkaline phosphatase.
- 2. History of inhibitor against factor IX. 3. Evidence of active hepatitis B or C and currently on antiviral therapy. 4. Have serological evidence of HIV-1 or HIV-2 with CD4 counts ≤200/mm3 (subjects who are HIV+ and stable with CD4 count >200/mm3 and undetectable viral load are eligible to enroll).
- 5. Any evidence of active infection or any immunosuppressive disorder. 6. Participated in a gene transfer trial within the last 6 months or in a clinical trial with an investigational drug within the last 12 weeks.
- 7. Unable or unwilling to comply with study assessments.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| YUVA-GT-F901Lentiviral factor IX gene modified autologous hematopoietic and mesenchymal stem cells | Biological | YUVA-GT-F901 |
Primary outcome
Number of participants experiencing drug-related adverse events
Time frame: a year
As assessed by physical exam, vital signs, standard clinical labs, and Bethesda assay for FIX inhibitor
1 secondary outcome
Changes from baseline in circulating FIX activity (IU/dL or % normal)
Time frame: a year
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Aug 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Lung-Ji Chang, PhD principal investigator
Shenzhen Geno-Immune Medical Institute
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing YUVA-GT-F901 in people with Hemophilia B, run by Shenzhen Geno-Immune Medical Institute at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 26 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Lung-Ji Chang, PhD (+86 0755-86573763, c@szgimi.org), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of participants experiencing drug-related adverse events (time frame: a year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Aug 2026; AzTrials last refreshed its copy on 29 Oct 2026.