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Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 1 / Phase 2INTERVENTIONAL

Study of the Safety, Pharmacodynamics and Efficacy of ANB-002 in Patients With Hemophilia B (SAFRAN)

An Open-label, Non-comparative, Single Dose-Escalation Study of the Safety, Pharmacodynamics and Efficacy of ANB-002 in Patients With Hemophilia B

Study of the Safety, Pharmacodynamics and Efficacy of ANB-002 in Patients With Hemophilia B (SAFRAN) (NCT06120582) is a Phase 1 / Phase 2 interventional studying Hemophilia B, sponsored by Biocad. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

Important: This information is not medical advice. Talk to your doctor about whether a clinical trial is right for you.

About This Trial

The goal of this multicenter, two-stage, open-label study is to investigate the safety, immunogenicity, and efficacy of ANB-002 in subjects with hemophilia В. The study will have a dose-escalation design with elements of phase I/II seamless adaptive design.

What Stage of Research Is This?

Phase 1 trials test a new treatment for the first time in humans, focusing on safety, dosing, and how the body processes the drug. For Hemophilia B, a Phase 1 study typically enrolls a small number of participants — often healthy volunteers or patients who have exhausted standard treatment options. Phase 1 results determine whether a treatment moves into larger Phase 2 efficacy studies.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

With a target enrollment of 28 participants, this is a small study — typical of early-phase research, rare-disease trials, or pilot studies designed to generate preliminary signal before a larger study is launched.

Who May Be Eligible (Plain English)

Who May Qualify: 1. Male with hemophilia B. 2. Age ≥18 years. 3. FIX activity at screening ≤2% without FIX inhibitor. 4. ≥150 previous exposure days of treatment with FIX concentrates. Who Should NOT Join This Trial: 1. Previous gene therapy. 2. Other blood or hematopoietic disorders. 3. Positive Anti-AAV5 antibodies (for Cohorts 1-3). 4. Diagnosed HIV-infection, not controlled with anti-viral therapy. 5. Hepatitis B (for Cohorts 1-3), acute or chronic hepatitis C. 6. Any active systemic infections or recurrent infections requiring systemic therapy at screening. 7. Any other disorders associated with severe weakened immune system. 8. Significant hepatic disorders (liver cirrhosis, liver fibrosis, etc). 9. Malignancies with remission \<5 years. Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language
Inclusion Criteria: 1. Male with hemophilia B. 2. Age ≥18 years. 3. FIX activity at screening ≤2% without FIX inhibitor. 4. ≥150 previous exposure days of treatment with FIX concentrates. Exclusion Criteria: 1. Previous gene therapy. 2. Other blood or hematopoietic disorders. 3. Positive Anti-AAV5 antibodies (for Cohorts 1-3). 4. Diagnosed HIV-infection, not controlled with anti-viral therapy. 5. Hepatitis B (for Cohorts 1-3), acute or chronic hepatitis C. 6. Any active systemic infections or recurrent infections requiring systemic therapy at screening. 7. Any other disorders associated with severe immunodeficiency. 8. Significant hepatic disorders (liver cirrhosis, liver fibrosis, etc). 9. Malignancies with remission \<5 years.

Treatments Being Tested

GENETIC

ANB-002, dose 1

Adeno-associated viral vector carrying the FIX gene single infusion at dose 1.

GENETIC

ANB-002, dose 2

Adeno-associated viral vector carrying the FIX gene single infusion at dose 2.

GENETIC

ANB-002, dose 3

Adeno-associated viral vector carrying the FIX gene single infusion at dose 3.

Locations (17)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

Republican Scientific and Practical Center for Radiation Medicine and Human Ecology
Homyel, Belarus
Minsk Scientific and Practical Center for Surgery, Transplantology and Hematology
Minsk, Belarus
State Autonomous Institution for Healthcare "Chelyabinsk Regional Clinical Hospital"
Chelyabinsk, Russia
State budgetary healthcare institution Leningrad Regional Clinical Hospital
Gatchina, Russia
Kuzbass Clinical Hospital named after S.V. Belyaev
Kemerovo, Russia
Federal State Budgetary Organization of Science "Kirov Research Institute of Hematology and Blood Transfusions of Federal Medical Biological agency"
Kirov, Russia
Federal State Budgetary Institution "National Medical Research Centre for Hematology" of the Ministry of Health of Russian Federation (Department of Clinical Diagnostics for Hematology and Hemostasis Disorders)
Moscow, Russia
Federal State Budgetary Institution "National Medical Research Centre for Hematology" of the Ministry of Health of Russian Federation (Department of Traumatology and Reconstructive and Restorative Orthopedics for Patients with Hemophilia)
Moscow, Russia
Federal Budgetary Institution "Moscow City Clinical Hospital named after S. P. Botkin"
Moscow, Russia
LLC "Medis"
Nizhny Novgorod, Russia
State Novosibirsk Regional Clinical Hospital
Novosibirsk, Russia
Russian Research Institute of Hematology and Transfusiology Federal State Institution of Federal Medical and Biological Agency
Saint Petersburg, Russia
City Polyclinic №37
Saint Petersburg, Russia
Almazov National Medical Research Centre
Saint Petersburg, Russia
Federal State Budgetary Educational Institution of Higher Education "Samara State Medical University" of the Ministry of Healthcare of the Russian Federation
Samara, Russia
State Institution "Komi Republican Oncological Dispensary"
Syktyvkar, Russia
Federal State Budgetary Educational Institution of Higher Education "Bashkir State Medical University" of the Ministry of Healthcare of the Russian Federation
Ufa, Russia

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT06120582), the sponsor (Biocad), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT06120582 clinical trial studying?

The goal of this multicenter, two-stage, open-label study is to investigate the safety, immunogenicity, and efficacy of ANB-002 in subjects with hemophilia В. The study will have a dose-escalation design with elements of phase I/II seamless adaptive design. The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT06120582?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT06120582?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT06120582. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT06120582. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.