AzTrials
AzTrials

Sickle Cell DiseasePhase 1/2NCT03653247

A Study to Assess the Safety, Tolerability, and Efficacy of BIVV003 for Autologous Hematopoietic Stem Cell Transplantation in Patients With Severe Sickle Cell Disease

A Phase 1/2 study testing Plerixafor, Busulfan and BIVV003 in people with Sickle Cell Disease, run by Sangamo Therapeutics at 5 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This is an open label, multicenter, Phase 1/2 study in approximately eight adults with severe Sickle Cell Disease (SCD). The study will evaluate the safety, tolerability, and efficacy of autologous hematopoietic stem cell transplantation using BIVV003. Read more about this study

Who is it for?
Ages 18 to 40 years
Conditions the study is for
Sickle Cell Disease
What is being tested?
Plerixafor, Busulfan and BIVV003
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
7 participants
Where
5 sitesUnited States
Study dates
6 Mar 2019to 17 Jul 2025
Phase
Phase 1/2
Are there results?
None posted in the registry

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 18 to 40 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • Ages 18 to 40
  • Confirmation of sickle cell disease (SCD) diagnosis (HbSS or HbS[beta]0 genotype)
  • Severe SCD, defined as having 1 or more of the following manifestations: Clinically significant neurologic event (example [e.g.], stroke) or any neurological deficit lasting more than 24 hours; History of 2 or more episodes or Acute Chest Syndrome (ACS) in 2 years prior to informed consent (despite adequate supportive therapies such as asthma therapy); Six or more pain crises per year in 2 years prior to informed consent (requiring intravenous [IV] pain management in the outpatient or inpatient hospital setting); History of 2 or more cases or priapism with participant seeking medical care in the 2-years prior to informed consent; Regular RBC transfusion therapy in the year prior to informed consent (having received 8 or more transfusions to prevent vaso-occlusive clinical complications); and Echocardiographic finding of tricuspid valve regurgitant jet (TRJ) velocity of greater than or equal to 2.5 meter per second (m/s)
  • Clinically stable to undergo stem cell mobilization and myeloablative hematopoietic stem cell transplantation (HSCT)
  • Adequate physiological function, defined as the following: Karnofsky/Lansky Performance of greater than or equal to 60; Acceptable cardiac function as defined in protocol; Acceptable pulmonary function as defined in protocol; Acceptable renal function as defined in protocol; and Acceptable hepatic function as defined in protocol
  • Ability to understand purpose and risks of study, provide Informed Consent Form (ICF) and authorization to use protected health information
Show all 10Show fewer
  • Completion of age-appropriate cancer screening
  • Willingness to use double-barrier method of contraception through entire study period (for participants of childbearing potential)
  • Willingness to receive blood transfusions
  • Willingness to discontinue hydroxyurea (HU) at least 30 days prior to stem cell mobilization through Day 100 post-transplantation

Who cannot join

  • Previous receipt of an autologous or allogeneic HSCT or solid organ transplantation
  • Previous treatment with gene therapy
  • Current enrollment in an interventional study or having received an investigational drug within 30 days of study enrollment
  • Pregnant or breastfeeding female
  • Female or male who plans to become pregnant or impregnate a partner, respectively, during the anticipated study period
  • Contraindication to plerixafor, apheresis, or busulfan
Show all 22Show fewer
  • Treatment with prohibited medication in previous 30 days
  • Known allergy or hypersensitivity to plerixafor, busulfan, or investigational product excipients
  • History of active malignancy within past 5 years, any history of hematologic malignancy, or a family history of a cancer predisposition syndrome (without negative result of candidate)
  • Current diagnosis of uncontrolled seizures
  • History of significant bleeding disorder
  • Clinically significant infection
  • Any major organ dysfunction involving brain, kidney, liver, lung, or heart (e.g., congestive heart failure, pulmonary hypertension)
  • Corrected QT interval of more than 500 millisecond (ms) based on screening electrocardiogram (ECG)
  • Positive for human immunodeficiency virus (HIV), hepatitis B virus (HBV), or hepatitis C virus (HCV)
  • Known to have a gamma-globin variant associated with altered oxygen affinity
  • Hereditary persistence of fetal hemoglobin (HPFH) or HbF concentration of more than or equal to 20 percent (%) at screening
  • Absolute Neutrophil Count (ANC) of less than or equal to 1,000 per microliter
  • Platelet count of less than 100,000 per microliter
  • History of platelet alloimmunization (precluding ability to provide transfusion support)
  • Extensive Red Blood Cell (RBC) alloimmunization (precluding ability to provide transfusion support)
  • Judged unsuitable for participation by investigator and/or sponsor

Trial locations and contacts

5 sites in 1 country.

5 sites in 1 country

United States5 sites
  • Children's Healthcare of Atlanta

    Atlanta, Georgia, 30322

  • Investigational Site Number 101

    Bethesda, Maryland, 20892

  • Karmanos Cancer Institute

    Detroit, Michigan, 48201

  • UCSF Benioff Children's Hospital

    Oakland, California, 94609

  • University of California Davis Comprehensive Cancer Center

    Sacramento, California, 95817

Other trials in United States

About this study

Official title: A Phase 1/2, Open-Label, Multicenter, Single-Arm Study to Assess the Safety, Tolerability, and Efficacy of BIVV003 for Autologous Hematopoietic Stem Cell Transplantation in Patients With Severe Sickle Cell Disease

This is an open label, multicenter, Phase 1/2 study in approximately eight adults with severe Sickle Cell Disease (SCD). The study will evaluate the safety, tolerability, and efficacy of autologous hematopoietic stem cell transplantation using BIVV003.

Read the detailed description

Subject participation in this study will be approximately 136 weeks. Enrolled subjects will be asked to participate in a separate long-term follow-up study to monitor the safety and efficacy of BIVV003 treatment for a total of 15 years post-transplant.

Being tested
Plerixafor, Busulfan, BIVV003
Keywords
Intervention: Genetic: BIVV003, Drug: Busulfan, Biological: Plerixafor, Phase: Phase 1/2
Medical subject headings
Anemia, Sickle Cell

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PlerixaforBiological

    Plerixafor subcutaneous injection will be administered prior to apheresis.

  • BusulfanDrug

    Busulfan IV infusion will be administered as myeloablative conditioning therapy.

  • BIVV003Genetic

    Also called Autologous CD34 + hematopoietic stem cells

    BIVV003 will be administered as an IV infusion following myeloablative conditioning with busulfan.

Study groups in NCT03653247
Study groupRoleWhat they receive
BIVV003ExperimentalParticipants will receive plerixafor as subcutaneous (SQ) administration followed by myeloablative conditioning therapy with intravenous (IV) busulfan. BIVV003 will then be administered as a 1-time IV infusion of autologous Cluster of Differentiation 34 + Hematopoietic Stem/Progenitor Cell (CD34+HSPC) transfected ex vivo with zinc finger nuclease (ZFN) messenger ribonucleic acid (mRNAs) targeting the B-cell lymphoma/leukemia 11A (BCL11A) locus.
Receives: Biological: Plerixafor; Drug: Busulfan; Genetic: BIVV003

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants who are Alive at Post-transplantation Day 100

    The percentage of participants who are alive at post-transplantation Day 100 will be calculated using the Kaplan-Meier estimate.

    Measured: Day 100

  2. Percentage of Participants who are Alive at Post-transplantation Week 52

    The percentage of participants who are alive at post-transplantation Week 52 will be calculated using the Kaplan-Meier estimate.

    Measured: Week 52

  3. Percentage of Participants who are Alive at Post-transplantation Week 104

    The percentage of participants who are alive at post-transplantation Week 104 will be calculated using the Kaplan-Meier estimate.

    Measured: Week 104

  4. Percentage of Participants With Successful Engraftment

    Successful engraftment is defined by absolute neutrophil count (ANC) greater than or equal to >=500 cells/microliter (mL) for 3 consecutive days.

    Measured: Up to Day 42

  5. Number of Participants With Adverse Events (AEs)

    An AE is any untoward medical occurrence in a participant administered a pharmaceutical product that does not necessarily have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product.

    Measured: Up to Week 104

  6. Number of Participants With Serious Adverse Events (SAEs)

    An SAE is any untoward medical occurrence that at any dose: Results in death, in the view of the Investigator, places the participant at immediate risk of death (a life-threatening event); however, this does not include an event that, had it occurred in a more severe form, might have caused death, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, results in a congenital anomaly/birth defect or is a medically important event.

    Measured: Up to Week 104

Secondary outcomes (22)
  1. CD34 + HSPC Yield from Plerixafor Stem Cell Mobilization

    Measured: Approximately 12 weeks

  2. Proportion of Participants with Sufficient Stem Cell Mobilization for Rescue Aliquot and BIVV003 Production

    Measured: Approximately 12 weeks

  3. Yield of Zinc Finger Nuclease (ZFN)-edited Investigational Product

    Measured: Approximately 12 weeks

  4. Time to Initial Neutrophil Recovery Following BIVV003 Infusion

    Measured: Up to Week 104

  5. Time to Platelet Recovery Following BIVV003 Infusion

    Measured: Up to Week 104

  6. Percentage of Participants With Maintenance of Absolute Neutrophil Count (ANC) of >=500/mcL to last Participant Visit

    Percentage of participants maintaining ANC of >=500/mcL to last Participant Visit (Week 104) will be calculated.

    Measured: Up to Week 104

  7. Percentage of Participants With Maintenance of Platelet count of >=50,000/mcL to last Participant Visit

    The percentage of participants attaining a post-transplant platelet count of >=50,000/mcL and maintaining this level through last Participant Visit (Week 104) will be calculated.

    Measured: Up to Week 104

  8. Change From Baseline in Peripheral Blood Fetal Hemoglobin (HbF) Levels

    Change from baseline in HbF up to Week 104 will be assessed.

    Measured: Baseline up to Week 104

  9. Change From Baseline in Peripheral Blood Percent (%)F cells

    Change from baseline in %F cells up to Week 104 will be assessed.

    Measured: Baseline up to Week 104

  10. Change From Baseline in Peripheral Blood Sickle Hemoglobin (HbS) Levels

    Change from baseline in peripheral blood HbS levels up to Week 104 will be assessed.

    Measured: Baseline up to Week 104

  11. Change From Baseline in Peripheral blood total hemoglobin (Hb) concentration

    Change From baseline in peripheral blood total hemoglobin (Hb) concentration up to week 104 will be assessed.

    Measured: Baseline up to Week 104

  12. Change From Baseline in Reticulocyte Count

    Change from baseline in reticulocyte count up to Week 104 will be assessed.

    Measured: Baseline up to Week 104

  13. Change From Baseline in Lactate Dehydrogenase (LDH) Levels

    Change from baseline in LDH levels up to Week 104 will be assessed.

    Measured: Baseline up to Week 104

  14. Change From Baseline in Haptoglobin Levels

    Change from baseline in haptoglobin levels up to Week 104 will be assessed.

    Measured: Baseline up to Week 104

  15. Change From Baseline in Serum Bilirubin Levels

    Change from baseline in serum bilirubin levels up to Week 104 will be assessed.

    Measured: Baseline up to Week 104

  16. Change From Baseline in Patient-Reported Outcomes Measurement Information System 57 (PROMIS-57) Scale Score

    Quality of life (QoL) measures including fatigue will be assessed using PROMIS-57 scale. This is a 57-item questionnaire with 8 questions per domain for assessing physical and mental well-being in participants with SCD. 57 questions are summed into a total score, which is transformed into an age specific normalized t-score with 50 representing normal, and lower scores representing increasing disability.

    Measured: Baseline up to Week 104

  17. Number of Participants With Sickle Cell Disease (SCD)-related Clinical Events

    Number of participants with SCD-related clinical events (including vaso-occlusive crisis [VOC], pain episodes etc.) will be reported.

    Measured: Baseline up to Week 104

  18. Number of SCD Related Clinical Events by Severity

    Severity will be categorized by toxicity grade according to CTCAE Version 5.0. AEs not listed in the CTCAE Version 5.0 will be evaluated by: Grade 1=Mild, Grade 2=Moderate, Grade 3=Severe or medically significant but not immediately life threatening, Grade 4=Life-threatening consequences; Grade 5=Death.

    Measured: Baseline up to Week 104

  19. Participants lymphocyte Counts

    Lymphocyte counts will be measured to assess reconstitution of immune function post-BIVV003 transplantation.

    Measured: At Weeks 13 and 52

  20. Participants Immunoglobulin levels

    Immunoglobulin levels will be measured to assess reconstitution of immune function post-BIVV003 transplantation.

    Measured: At Weeks 13 and 52

  21. Number of Red Blood Cell (RBC) Transfusions Received During the Post-transplantation Study Period

    The number of RBC transfusions received during the Post-Transplantation study period will be reported.

    Measured: Up to Week 104

  22. Total Volume of RBC Transfused

    Total volume of RBC transfused during the Post-Transplantation study period will be reported.

    Measured: Up to Week 104

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted31 Aug 2018
  2. Study start6 Mar 2019
  3. Primary completion17 Jul 2025
  4. Study completion17 Jul 2025

Resources

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 1/2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
7 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03653247
Sponsor's protocol ID
003SCD101
Status last verified
Sep 2025
First submitted
10 Aug 2018
Last updated
12 Sep 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Brusson M, Miccio A. Genome editing approaches to beta-hemoglobinopathies. Prog Mol Biol Transl Sci. 2021;182:153-183. doi: 10.1016/bs.pmbts.2021.01.025. Epub 2021 Mar 1.

    PubMed 34175041

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Plerixafor, Busulfan and BIVV003 in people with Sickle Cell Disease, run by Sangamo Therapeutics at 5 sites in United States.

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 10 inclusion and 22 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: finished, as of the sponsor's last update on 12 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 5 sites in United States. 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 combined 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.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants who are Alive at Post-transplantation Day 100 (time frame: Day 100). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03653247, which also lists 1 linked publication.

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 12 Sep 2025.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in