ClinicalTrials.gg
CompletedNCT03392974GENEr8-2Updated Oct 3, 2023Results posted

Single-Arm Study To Evaluate The Efficacy and Safety of Valoctocogene Roxaparvovec in Hemophilia A Patients at a Dose of 4E13 vg/kg

A Phase 3 interventional study of Valoctocogene Roxaparvovec in Hemophilia A, sponsored by BioMarin Pharmaceutical. Completed at 1 site in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-10-03.

Sponsored by BioMarin Pharmaceutical · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
1
Allocation
Not applicable
Ages
18 Years and older
Sex
Male
01

Study summary

This Phase III clinical study will assess the efficacy of BMN 270 defined as FVIII activity, during weeks 49-52 following intravenous infusion of BMN 270 and assess the impact of BMN 270 on usage of exogenous FVIII replacement therapy and the number of bleeding episodes from week 5 to week 52.

02

Conditions studied

  • Hemophilia A

Keywords

  • Hemophilia A
  • Gene Therapy
  • Clotting Disorders
  • Blood Disorder
  • Blood Coagulation Disorders
  • Inherited Blood Coagulation Disorders
  • Hematologic Diseases
  • Coagulation Protein Disorders
  • Hemorrhagic Disorders
  • Genetic Diseases
  • Inborn
  • Factor VIII
  • Coagulants
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In context

Hemophilia A

844 studies on the registry are indexed under Hemophilia A; 138 are open to participants now.

This study's enrollment of 1 is below the median of 30 across 499 interventional studies indexed under Hemophilia A.

Browse Hemophilia A studies →

Lead sponsor

BioMarin Pharmaceutical is the lead sponsor of 112 studies on the registry; 13 are open to participants now.

Of its 17 completed or terminated interventional studies of FDA-regulated products, 12 (71%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Males ≥ 18 years of age with hemophilia A and residual FVIII levels ≤ 1 IU/dL as evidenced by medical history.
  2. Must have been on prophylactic FVIII replacement therapy for at least 12 months prior to study entry.
  3. Treated/exposed to FVIII concentrates or cryoprecipitate for a minimum of 150 exposure days.
  4. No previous documented history of a detectable FVIII inhibitor of less than 0.6 Bethesda Units (BU).

Exclusion criteria

Exclusion Criteria:

  1. Detectable pre-existing antibodies to the AAV5 capsid.
  2. Any evidence of active infection or any disorder, including infection.
  3. Significant liver dysfunction, prior liver showing significant fibrosis, liver cirrhosis of any etiology or history of hepatic .
  4. Evidence of any bleeding disorder not related to hemophilia A.
  5. Active .
  6. Prior treatment with any vector/gene transfer agent.
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
1 participant (actual)

Study arms

  • Experimental
    Valoctocogene Roxaparvovec Open Label

    Single administration of valoctocogene roxaparvovec at a dose of 4E13 vg/kg

    Biological: Valoctocogene Roxaparvovec

Interventions

  • Adeno-Associated Virus Vector-Mediated Gene Transfer of Human Factor VIII in Hemophilia A

    Also known as: BMN 270

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What researchers measure

Primary outcomes

  1. Change of the Median Factor VIII (FVIII) Activity

    Change of the FVIII activity, as measured by chromogenic substrate assay, at Week 52 post-BMN 270 infusion.

    Time frame: Week 52

Secondary outcomes

  1. Change in the Annualized Utilization (IU/kg) of Exogenous FVIII Replacement Therapy

    Change in the annualized utilization (IU/kg) of exogenous FVIII replacement therapy during Week 5 to Week 52 post-BMN 270 infusion from the baseline utilization of exogenous FVIII replacement therapy

    Time frame: Weeks 5 through Week 52

  2. Change in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Treatment

    Change in the annualized number of bleeding episodes requiring exogenous FVIII replacement treatment (annualized bleeding rate, ABR) during Week 5 to Week 52 of the study post-BMN 270 infusion from the baseline ABR

    Time frame: Weeks 5 though Week 52

07

Results

Posted Oct 8, 2021

Participant flow

Participant flow — Overall Study
MilestoneBMN 270 4E13 vg/kg
Started1
Completed1
Not completed0

Outcome measures

PrimaryChange of the Median Factor VIII (FVIII) Activity

Change of the FVIII activity, as measured by chromogenic substrate assay, at Week 52 post-BMN 270 infusion.

Time frame:
Week 52
Reported as:
Mean · IU/dL
Change of the Median Factor VIII (FVIII) Activity
IU/dLBMN 270 4E13 vg/kg
Change of the Median Factor VIII (FVIII) Activity4.1 ± NA
SecondaryChange in the Annualized Utilization (IU/kg) of Exogenous FVIII Replacement Therapy

Change in the annualized utilization (IU/kg) of exogenous FVIII replacement therapy during Week 5 to Week 52 post-BMN 270 infusion from the baseline utilization of exogenous FVIII replacement therapy

Time frame:
Weeks 5 through Week 52
Reported as:
Mean · IU/kg/yr
Change in the Annualized Utilization (IU/kg) of Exogenous FVIII Replacement Therapy
IU/kg/yrBMN 270 4E13 vg/kg
Change in the Annualized Utilization (IU/kg) of Exogenous FVIII Replacement Therapy-4058.24 ± NA
SecondaryChange in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Treatment

Change in the annualized number of bleeding episodes requiring exogenous FVIII replacement treatment (annualized bleeding rate, ABR) during Week 5 to Week 52 of the study post-BMN 270 infusion from the baseline ABR

Time frame:
Weeks 5 though Week 52
Reported as:
Mean · episodes/year
Change in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Treatment
episodes/yearBMN 270 4E13 vg/kg
Change in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Treatment5.77 ± NA

Adverse events

Collected over First 52 weeks post infusion. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
BMN 270 4E13 vg/kg0/1 (0%)0/1 (0%)1/1 (100%)
Total0/1 (0%)0/1 (0%)1/1 (100%)
Most frequent other events
Most frequent other events
EventBMN 270 4E13 vg/kgTotal
PyrexiaGeneral disorders1/11/1
Hepatocellular injuryHepatobiliary disorders1/11/1
NasopharyngitisInfections and infestations1/11/1
Alanine aminotransferase increasedInvestigations1/11/1
MyalgiaMusculoskeletal and connective tissue disorders1/11/1
Oropharyngeal painRespiratory, thoracic and mediastinal disorders1/11/1

Baseline characteristics

Age, Continuous
Age, Continuous(years)BMN 270 4E13 vg/kg
Mean45.0 ± NA
Age, Customized
Age, Customized(participants)BMN 270 4E13 vg/kg
18 - <651
>= 650
Sex: Female, Male
Sex: Female, Male(Participants)BMN 270 4E13 vg/kg
Female0
Male1
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)BMN 270 4E13 vg/kg
Hispanic or Latino0
Not Hispanic or Latino1
Unknown or Not Reported0
Race/Ethnicity, Customized
Race/Ethnicity, Customized(participants)BMN 270 4E13 vg/kg
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White1
Other0
Region of Enrollment
Region of Enrollment(participants)BMN 270 4E13 vg/kg
United States1
08

Study locations

1 site
  • Hemophilia Center of Western Pennsylvania
    Pittsburgh, Pennsylvania 15213-4306, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 3, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03392974
Responsible party
Sponsor
First posted
Jan 8, 2018
Start date
Mar 14, 2018
Primary completion
May 22, 2019
Completion
Jun 5, 2023
Results posted
Oct 8, 2021
Last update
Oct 3, 2023

Study contacts

Medical Director, MD
study director · BioMarin Pharmaceutical

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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