ClinicalTrials.gg
CompletedNCT03370913BMN 270-301Updated Mar 25, 2025Results posted

Single-Arm Study To Evaluate The Efficacy and Safety of Valoctocogene Roxaparvovec in Hemophilia A Patients (BMN 270-301)

A Phase 3 interventional study of valoctocogene roxaparvovec in Hemophilia A, sponsored by BioMarin Pharmaceutical. Completed at 49 sites in 13 countries. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-03-25.

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

Phase
Phase 3
Study type
Interventional
Enrollment
144
Allocation
Not applicable
Ages
18 Years and older
Sex
Male
01

Study summary

This Phase III clinical study will assess the impact of BMN 270 (compared to FVIII prophylaxis) on the number of bleeding episodes irrespective of exogenous FVIII replacement treatment in the efficacy evaluation period (EEP) (from Week 5 post-BMN 270 infusion (Study Day 33) or the end of FVIII prophylaxis plus the washout period (3 days for products of standard half-life or plasma-derived and 5 days for products of extended half-life), whichever is later, to last visit by the data cut-off for the 2-year analysis, hereafter referred to as "Post FVIII Prophylaxis to Last Visit"). The study will also assess the impact of BMN 270 (compared to FVIII prophylaxis) on: the number of bleeding episodes requiring exogenous FVIII treatment in "Post FVIII Prophylaxis to Last Visit", FVIII activity as measured by chromogenic sustrate assay at Week 104 following intravenous infusion of BMN 270, usage of exogenous FVIII replacement therapy in "Post FVIII Prophylaxis to Last Visit", health-related quality of life patient-reported outcomes at week 104 following intravenous infusion of BMN 270. The study will also evaluate the safety of the BMN 270.

02

Conditions studied

  • Hemophilia A

Keywords

  • 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
03

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 144 is above 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, at the time of signing the .
  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 (EDs).
  4. No previous documented history of a detectable FVIII inhibitor, and results from a Bethesda assay or Bethesda assay with Nijmegen modification of less than 0.6 Bethesda Units (BU) on 2 consecutive occasions at least one week apart within the past 12 months.

Exclusion criteria

Exclusion Criteria:

  1. Detectable pre-existing antibodies to the adeno-associated virus 5 (AAV5) capsid.
  2. Any evidence of active infection or any disorder, except for infection
  3. Any evidence of active infection or any immunosuppressive disorder, including HIV infection (effective as of Protocol Amendment 3)
  4. Significant liver dysfunction.
  5. Prior liver showing significant fibrosis.
  6. Evidence of any bleeding disorder not related to hemophilia A.
  7. count of \< 100 x 10\^9/L.
  8. Creatinine ≥ 1.5 mg/dL.
  9. Liver cirrhosis of any etiology as assessed by liver ultrasound.
  10. Chronic or active .
  11. Active .
  12. Active , except non-melanoma skin cancer.
  13. History of hepatic malignancy.
  14. History of arterial or venous thromboembolic events.
  15. Known inherited or acquired thrombophilia, including conditions associated with increased thromboembolic risk, such as atrial fibrillation.
Terms in these criteria, in plain language(8)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

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.

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.

05

Study design

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

Study arms

  • Experimental
    valoctocogene roxaparvovec Open Label

    Single administration of valoctocogene roxaparvovec at a dose of 6E13 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

06

What researchers measure

Primary outcomes

  1. Change From Baseline in Annualized Number of Bleeding Episodes Irrespective of Exogenous FVIII Replacement Treatment [Annualized Bleeding Rate (ABR) for All Bleeds] in EEP.

    All bleeds comprises both treated and non-treated bleeds. In this definition, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. All bleeds are any reported bleeding events regardless of the use of FVIII or other treatments. ABR for all bleeds= Number of bleeding episodes for all bleeds during the calculation period / total number of days during the calculation period \* 365.25. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis. EEP: From Week 5 post-BMN 270 infusion (Study Day 33) or the end of FVIII prophylaxis plus the washout period (3 days for products of standard half-life or plasma-derived and 5 days for products of extended half-life), whichever is later, to last visit by the data cut-off for the 2-year analysis, hereafter referred to as "Post FVIII Prophylaxis to Last Visit").

    Time frame: Baseline to efficacy evaluation period (EEP)

Secondary outcomes

  1. Change From Baseline in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Therapy (ABR for Treated Bleeds) in the EEP.

    ABR for treated bleeds=Number of bleeding episodes for treated bleeds during the calculation period/total number of days during the calculation period \* 365.25 Bleeds that were treated with FVIII replacement therapy (recorded as "treatment for bleed") within 72 hours and were not associated with surgery or a procedure were included. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis. EEP: From Week 5 post-BMN 270 infusion (Study Day 33) or the end of FVIII prophylaxis plus the washout period (3 days for products of standard half-life or plasma-derived and 5 days for products of extended half-life), whichever is later, to last visit by the data cut-off for the 2-year analysis, hereafter referred to as "Post FVIII Prophylaxis to Last Visit").

    Time frame: Baseline to EEP

  2. Change From Baseline in FVIII Activity at Week 104

    The change from baseline (assuming no treatment for severe hemophilia A) in FVIII activity, as measured by chromogenic substrate assay, at Weeks 104 post-BMN 270 infusion. Each subject's FVIII activity level at Week 104 is defined as the median of the values obtained at Week 104 with the analysis window defined. The baseline value is imputed as 1 IU/dL for each subject. Note: One of the subject's wk104 duplicate data issue was corrected in the 3 year analysis per which the mean (standard deviation) values are reported in outcome measure table. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis.

    Time frame: Baseline to Week 104

  3. Change From Baseline in Annualized FVIII Utilization in EEP.

    The change from baseline in the annualized utilization (IU/kg/year) of exogenous FVIII replacement therapy in the Post FVIII Prophylaxis to Last Visit in the EEP. The annualized utilization (IU/kg/year) of exogenous FVIII replacement therapy is defined as Sum of FVIII use (IU/kg) during calculation period/Total number of days during the calculation period ×365.25. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis. EEP: From Week 5 post-BMN 270 infusion (Study Day 33) or the end of FVIII prophylaxis plus the washout period (3 days for products of standard half-life or plasma-derived and 5 days for products of extended half-life), whichever is later, to last visit by the data cut-off for the 2-year analysis, hereafter referred to as "Post FVIII Prophylaxis to Last Visit").

    Time frame: Baseline to EEP

  4. Change From Baseline in Haemo-QoL-A Quality of Life: Total Score at Week 104

    The change from baseline(assuming no treatment for severe hemophilia A) in Haemo-Qol-A score, at wk104 post-BMN 270 infusion.The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life(HRQoL)questionnaire for adults consisting of 41 items covering 6 domains(Physical Functioning,Role Functioning,Worry,Consequences of Bleeding,Emotional Impact \&Treatment Concerns). The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0(none of the time)to 5 (all of the time).The recall period for the Haemo-Qol-A is one month (4-weeks). The Haemo-QoL-A domain(physical functioning, role functioning, worry, consequences of bleeding, emotional impact, treatment concern) scores range from 0 to 5 and the total score is derived by summing each domain score (range, 0 to 30). Domain and total scores are transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia related quality of life.

    Time frame: Baseline to Week 104

  5. Change From Baseline in Haemo-QoL-A Quality of Life: Physical Functioning Domain Score, at Week 104

    The change from baseline (assuming no treatment for severe hemophilia A) in Haemo-Qol-A score, at week 104 post-BMN 270 infusion. The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life (HRQoL) questionnaire for adults consisting of 41 items covering six domains (Physical Functioning, Role Functioning, Worry, Consequences of Bleeding, Emotional Impact and Treatment Concerns).The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0 (none of the time) to 5 (all of the time).The recall period for the Haemo-Qol-A is one month (4-weeks). The Haemo-Qol-A physical functioning domain score is an average of each item value within a domain.The range of domain scores is 0 to 5; higher scores mean better HRQoL or less impairment for the domain. The physical functioning domain score is transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia-related physical functioning

    Time frame: Baseline to Week 104

  6. Change From Baseline in Haemo-QoL-A Quality of Life: Consequences of Bleeding Domain Score, at Week 104

    The change from baseline(assuming no treatment for severe hemophilia A)in Haemo-Qol-A score, at week 104 post-BMN 270 infusion. The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life(HRQoL)questionnaire for adults consisting of 41 items covering 6 domains(Physical Functioning,Role Functioning,Worry,Consequences of Bleeding,Emotional Impact and Treatment Concerns). The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0(none of the time) to 5(all of the time). The recall period for the Haemo-Qol-A is one month (4-wks). The Haemo-Qol-A consequences of bleeding domain score is an average of each item value within a domain. The range of domain scores is 0 to 5; higher scores mean better HRQoL or less impairment for the domain. The consequences of bleeding domain score is transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia-related consequences of bleeding

    Time frame: Baseline to Week 104

  7. Change From Baseline in Haemo-QoL-A Quality of Life: Role Functioning Domain Score, at Week 104

    The change from baseline (assuming no treatment for severe hemophilia A) in Haemo-Qol-A score, at week 104 post-BMN 270 infusion. The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life (HRQoL) questionnaire for adults consisting of 41 items covering six domains (Physical Functioning, Role Functioning, Worry, Consequences of Bleeding, Emotional Impact and Treatment Concerns).The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0 (none of the time) to 5 (all of the time). The recall period for the Haemo-Qol-A is one month (4-weeks). The Haemo-Qol-A role functioning domain score is an average of each item value within a domain. The range of domain scores is 0 to 5; higher scores mean better HRQoL or less impairment for the domain. The role functioning domain score is transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia-related role functioning.

    Time frame: Baseline to Week 104

07

Results

Posted Nov 28, 2023

Participant flow

This study was conducted at 48 sites worldwide (United States, Australia, Belgium, Brazil, France, Germany, Israel, Italy, South Korea, South Africa, Spain, Taiwan, and United Kingdom).

Participant flow — Overall Study
MilestoneBMN 270 (Valoctocogene Roxaparvovec)
Started134
Completed132
Not completed2
Withdrew: Death1
Withdrew: Lost to follow-up1

Outcome measures

PrimaryChange From Baseline in Annualized Number of Bleeding Episodes Irrespective of Exogenous FVIII Replacement Treatment [Annualized Bleeding Rate (ABR) for All Bleeds] in EEP.

All bleeds comprises both treated and non-treated bleeds. In this definition, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. All bleeds are any reported bleeding events regardless of the use of FVIII or other treatments. ABR for all bleeds= Number of bleeding episodes for all bleeds during the calculation period / total number of days during the calculation period \* 365.25. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis. EEP: From Week 5 post-BMN 270 infusion (Study Day 33) or the end of FVIII prophylaxis plus the washout period (3 days for products of standard half-life or plasma-derived and 5 days for products of extended half-life), whichever is later, to last visit by the data cut-off for the 2-year analysis, hereafter referred to as "Post FVIII Prophylaxis to Last Visit").

Time frame:
Baseline to efficacy evaluation period (EEP)
Reported as:
Mean · bleeds/year
Change From Baseline in Annualized Number of Bleeding Episodes Irrespective of Exogenous FVIII Replacement Treatment [Annualized Bleeding Rate (ABR) for All Bleeds] in EEP.
bleeds/yearBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in Annualized Number of Bleeding Episodes Irrespective of Exogenous FVIII Replacement Treatment [Annualized Bleeding Rate (ABR) for All Bleeds] in EEP.-4.13 ± 6.93
Statistical analysis
  • BMN 270 (Valoctocogene Roxaparvovec) · t-test, 2 sided · p = <0.0001 (P-values were for 2-sided test against 0.) · % reduction from baseline: -77.077% reduction
SecondaryChange From Baseline in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Therapy (ABR for Treated Bleeds) in the EEP.

ABR for treated bleeds=Number of bleeding episodes for treated bleeds during the calculation period/total number of days during the calculation period \* 365.25 Bleeds that were treated with FVIII replacement therapy (recorded as "treatment for bleed") within 72 hours and were not associated with surgery or a procedure were included. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis. EEP: From Week 5 post-BMN 270 infusion (Study Day 33) or the end of FVIII prophylaxis plus the washout period (3 days for products of standard half-life or plasma-derived and 5 days for products of extended half-life), whichever is later, to last visit by the data cut-off for the 2-year analysis, hereafter referred to as "Post FVIII Prophylaxis to Last Visit").

Time frame:
Baseline to EEP
Reported as:
Mean · bleeds/year
Change From Baseline in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Therapy (ABR for Treated Bleeds) in the EEP.
bleeds/yearBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in the Annualized Number of Bleeding Episodes Requiring Exogenous FVIII Replacement Therapy (ABR for Treated Bleeds) in the EEP.-4.08 ± 6.57
SecondaryChange From Baseline in FVIII Activity at Week 104

The change from baseline (assuming no treatment for severe hemophilia A) in FVIII activity, as measured by chromogenic substrate assay, at Weeks 104 post-BMN 270 infusion. Each subject's FVIII activity level at Week 104 is defined as the median of the values obtained at Week 104 with the analysis window defined. The baseline value is imputed as 1 IU/dL for each subject. Note: One of the subject's wk104 duplicate data issue was corrected in the 3 year analysis per which the mean (standard deviation) values are reported in outcome measure table. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis.

Time frame:
Baseline to Week 104
Reported as:
Mean · IU/dL
Change From Baseline in FVIII Activity at Week 104
IU/dLBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in FVIII Activity at Week 10421.94 ± 33.04
SecondaryChange From Baseline in Annualized FVIII Utilization in EEP.

The change from baseline in the annualized utilization (IU/kg/year) of exogenous FVIII replacement therapy in the Post FVIII Prophylaxis to Last Visit in the EEP. The annualized utilization (IU/kg/year) of exogenous FVIII replacement therapy is defined as Sum of FVIII use (IU/kg) during calculation period/Total number of days during the calculation period ×365.25. Baseline: prior to BMN 270 infusion while receiving FVIII prophylaxis. EEP: From Week 5 post-BMN 270 infusion (Study Day 33) or the end of FVIII prophylaxis plus the washout period (3 days for products of standard half-life or plasma-derived and 5 days for products of extended half-life), whichever is later, to last visit by the data cut-off for the 2-year analysis, hereafter referred to as "Post FVIII Prophylaxis to Last Visit").

Time frame:
Baseline to EEP
Reported as:
Mean · IU/kg/yr
Change From Baseline in Annualized FVIII Utilization in EEP.
IU/kg/yrBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in Annualized FVIII Utilization in EEP.-3891.27 ± 1761.16
SecondaryChange From Baseline in Haemo-QoL-A Quality of Life: Total Score at Week 104

The change from baseline(assuming no treatment for severe hemophilia A) in Haemo-Qol-A score, at wk104 post-BMN 270 infusion.The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life(HRQoL)questionnaire for adults consisting of 41 items covering 6 domains(Physical Functioning,Role Functioning,Worry,Consequences of Bleeding,Emotional Impact \&Treatment Concerns). The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0(none of the time)to 5 (all of the time).The recall period for the Haemo-Qol-A is one month (4-weeks). The Haemo-QoL-A domain(physical functioning, role functioning, worry, consequences of bleeding, emotional impact, treatment concern) scores range from 0 to 5 and the total score is derived by summing each domain score (range, 0 to 30). Domain and total scores are transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia related quality of life.

Time frame:
Baseline to Week 104
Reported as:
Mean · score on a scale
Change From Baseline in Haemo-QoL-A Quality of Life: Total Score at Week 104
score on a scaleBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in Haemo-QoL-A Quality of Life: Total Score at Week 1047.01 ± 12.55
SecondaryChange From Baseline in Haemo-QoL-A Quality of Life: Physical Functioning Domain Score, at Week 104

The change from baseline (assuming no treatment for severe hemophilia A) in Haemo-Qol-A score, at week 104 post-BMN 270 infusion. The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life (HRQoL) questionnaire for adults consisting of 41 items covering six domains (Physical Functioning, Role Functioning, Worry, Consequences of Bleeding, Emotional Impact and Treatment Concerns).The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0 (none of the time) to 5 (all of the time).The recall period for the Haemo-Qol-A is one month (4-weeks). The Haemo-Qol-A physical functioning domain score is an average of each item value within a domain.The range of domain scores is 0 to 5; higher scores mean better HRQoL or less impairment for the domain. The physical functioning domain score is transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia-related physical functioning

Time frame:
Baseline to Week 104
Reported as:
Mean · score on a scale
Change From Baseline in Haemo-QoL-A Quality of Life: Physical Functioning Domain Score, at Week 104
score on a scaleBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in Haemo-QoL-A Quality of Life: Physical Functioning Domain Score, at Week 1044.90 ± 13.78
SecondaryChange From Baseline in Haemo-QoL-A Quality of Life: Consequences of Bleeding Domain Score, at Week 104

The change from baseline(assuming no treatment for severe hemophilia A)in Haemo-Qol-A score, at week 104 post-BMN 270 infusion. The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life(HRQoL)questionnaire for adults consisting of 41 items covering 6 domains(Physical Functioning,Role Functioning,Worry,Consequences of Bleeding,Emotional Impact and Treatment Concerns). The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0(none of the time) to 5(all of the time). The recall period for the Haemo-Qol-A is one month (4-wks). The Haemo-Qol-A consequences of bleeding domain score is an average of each item value within a domain. The range of domain scores is 0 to 5; higher scores mean better HRQoL or less impairment for the domain. The consequences of bleeding domain score is transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia-related consequences of bleeding

Time frame:
Baseline to Week 104
Reported as:
Mean · score on a scale
Change From Baseline in Haemo-QoL-A Quality of Life: Consequences of Bleeding Domain Score, at Week 104
score on a scaleBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in Haemo-QoL-A Quality of Life: Consequences of Bleeding Domain Score, at Week 10410.29 ± 17.65
SecondaryChange From Baseline in Haemo-QoL-A Quality of Life: Role Functioning Domain Score, at Week 104

The change from baseline (assuming no treatment for severe hemophilia A) in Haemo-Qol-A score, at week 104 post-BMN 270 infusion. The Haemo-Qol-A questionnaire is a fit for purpose hemophilia-specific health related quality of life (HRQoL) questionnaire for adults consisting of 41 items covering six domains (Physical Functioning, Role Functioning, Worry, Consequences of Bleeding, Emotional Impact and Treatment Concerns).The Haemo-Qol-A items are answered on a 6-point Likert scale ranging from 0 (none of the time) to 5 (all of the time). The recall period for the Haemo-Qol-A is one month (4-weeks). The Haemo-Qol-A role functioning domain score is an average of each item value within a domain. The range of domain scores is 0 to 5; higher scores mean better HRQoL or less impairment for the domain. The role functioning domain score is transformed to a 0 (minimum) to 100 (maximum) scale with higher scores indicating a better or less impaired haemophilia-related role functioning.

Time frame:
Baseline to Week 104
Reported as:
Mean · Score on a scale
Change From Baseline in Haemo-QoL-A Quality of Life: Role Functioning Domain Score, at Week 104
Score on a scaleBMN 270 (Valoctocogene Roxaparvovec)
Change From Baseline in Haemo-QoL-A Quality of Life: Role Functioning Domain Score, at Week 1047.37 ± 15.17

Adverse events

Collected over Up to data cutoff date 15 November 2021 (Two year data analysis).. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
BMN 270 (Valoctocogene Roxaparvovec)1/134 (0.7%)24/134 (17.9%)134/134 (100%)
Most frequent serious events
Showing 10 of 39
Most frequent serious events
EventBMN 270 (Valoctocogene Roxaparvovec)
Alanine aminotransferase increasedInvestigations2/134
Anaphylactic reactionImmune system disorders2/134
DiarrheaGastrointestinal disorders2/134
GastroenteritisInfections and infestations2/134
Rectal hemorrhageGastrointestinal disorders2/134
Acetabulum fractureInjury, poisoning and procedural complications1/134
ApneaRespiratory, thoracic and mediastinal disorders1/134
ArthropathyMusculoskeletal and connective tissue disorders1/134
CataractEye disorders1/134
Completed suicidePsychiatric disorders1/134
Most frequent other events
Showing 10 of 55
Most frequent other events
EventBMN 270 (Valoctocogene Roxaparvovec)
Alanine aminotransferase increasedInvestigations119/134
HeadacheNervous system disorders55/134
ArthralgiaMusculoskeletal and connective tissue disorders53/134
NauseaGastrointestinal disorders51/134
Aspartate aminotransferase increasedInvestigations47/134
FatigueGeneral disorders40/134
AcneSkin and subcutaneous tissue disorders36/134
Upper respiratory tract infectionInfections and infestations33/134
PyrexiaGeneral disorders31/134
NasopharyngitisInfections and infestations29/134

Baseline characteristics

Intent-to-Treat (ITT) Population (n=134): All subjects dosed in 270-301

Age, Continuous
Age, Continuous(years)BMN 270 (Valoctocogene Roxaparvovec)
Mean31.7 ± 10.3
Age, Customized
Age, Customized(Participants)BMN 270 (Valoctocogene Roxaparvovec)
18 to < 30 years65
30 to < 50 years56
>= 50 years13
Sex: Female, Male
Sex: Female, Male(Participants)BMN 270 (Valoctocogene Roxaparvovec)
Female0
Male134
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)BMN 270 (Valoctocogene Roxaparvovec)
Hispanic or Latino7
Not Hispanic or Latino127
Unknown or Not Reported0
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)BMN 270 (Valoctocogene Roxaparvovec)
Asian19
Black or African-American15
Native Hawaiian or other Pacific Islander1
White96
Not provided due to patient privacy3
Baseline annualized FVIII usage
Baseline annualized FVIII usage(IU/kg/year)BMN 270 (Valoctocogene Roxaparvovec)
Mean4113.69 ± 1738.92
Baseline annualized number of FVIII infusions
Baseline annualized number of FVIII infusions(Infusions/year)BMN 270 (Valoctocogene Roxaparvovec)
Mean137.55 ± 57.04
Baseline ABR (all bleeds)
Baseline ABR (all bleeds)(bleeds/year)BMN 270 (Valoctocogene Roxaparvovec)
Mean5.97 ± 11.06

5 further baseline measures are reported on the registry.

08

Study locations

49 sites
  • Los Angeles Orthopedic Hospital, Orthopedic Hemophilia Treatment Center
    Los Angeles, California 90007-2664, United States
  • UC Davis Hemophilia Treatment Center
    Sacramento, California 95817, United States
  • University of California San Diego, Hematology and Oncology, Hemophilia &Thrombosis Treatment Center
    San Diego, California 92122, United States
  • UCSF Medical Center
    San Francisco, California 94143-0106, United States
  • University of Colorado
    Aurora, Colorado 80045, United States
  • St. Joseph's Children's Hospital, Center for Bleeding and Clotting Disorders
    Tampa, Florida 33607, United States
  • Ann & Robert H. Lurie Children's Hospital of Chicago, Department of Hematology
    Chicago, Illinois 60611-2605, United States
  • James Graham Brown Cancer Center
    Louisville, Kentucky 40202, United States
  • Tulane University Hematology & Medical Oncology
    New Orleans, Louisiana 70112-2699, United States
  • University of Michigan, Pediatric Hematology and Oncology
    Ann Arbor, Michigan 48109-5718, United States
  • Wayne State University, Detroit Medical Center
    Detroit, Michigan 48201, United States
  • University of Minnesota
    Minneapolis, Minnesota 55455, United States
  • Washington University School of Medicine, Department of Pediatrics, Division of Hematology/Oncology
    Saint Louis, Missouri 63110-1093, United States
  • UNC Hemophilia and Thrombosis Center
    Chapel Hill, North Carolina 27517, United States
  • Nationwide Children's Hospital
    Columbus, Ohio 43205, United States
  • The Royal Adelaide Hospital (RAH)
    Adelaide, Australia
  • Royal Brisbane and Women's Hospital
    Brisbane, Australia
  • Alfred Hospital
    Melbourne, Australia
  • Fiona Stanley Hospital
    Perth, Australia
  • Royal Prince Alfred Hospital
    Sydney, Australia
  • University Hospital Leuven
    Leuven, Belgium
  • Campinas Estadual University (UNICAMP) / Campinas Hemocentro / Hematologia E Hemoterapia Center
    Campinas, Brazil
  • Parana's Hematology And Hemotherapy Center (HEMEPAR)
    Curitiba, Brazil
  • Arthur De Siqueira Cavalcanti Hematology State Institute
    Rio De Janeiro, Brazil
  • Sao Paulo University Clinical Hospital
    São Paulo, Brazil
  • Holy Spirit Hematology and Hemotherapy Center
    Vitória, Brazil
  • Regional University Hospital of Lille (CHRU de Lille)
    Lille, France
  • Hopital de la Timone Marseille - Assistance Publique des Hopitaux de Marseille
    Marseille, France
  • Vivantes Clinic im Friedrichshain- Landsberger Allee
    Berlin, Germany
  • University Clinic Bonn
    Bonn, Germany
  • Chaim Sheba Medical Center
    Ramat Gan, Israel
  • Maggiore Polyclinic Hospital, IRCCS Ca' Granda, Center for Hemophilia and Thrombosis Angelo Bianchi Bonomi
    Milan, Italy
  • Department of Pediatrics, Kyung Hee University Hospital at Gangdong
    Seoul, Korea, Republic of
  • Charlotte Maxeke Johannesburg Academic Hospital, Hemophilia Comprehensive Care Center
    Johannesburg, South Africa
  • Hospital Teresa Herrera
    A Coruna, Spain
  • University Hospital Virgen del Rocio (HUVR)
    Seville, Spain
  • Changhua Christian Hospital
    Changhua, Taiwan
  • Kaohsiung Medical University Chung-Ho Memorial Hospital
    Kaohsiung, Taiwan
  • Taichung Veterans General Hospital
    Taichung, Taiwan
  • National Taiwan University Hospital
    Taipei, Taiwan
  • Tri-Service General Hospital
    Taipei, Taiwan
  • Queen Elizabeth Hospital
    Birmingham, United Kingdom
  • Addenbrookes Hospital
    Cambridge, United Kingdom
  • Glasgow Royal Infirmary, Department of Hematology
    Glasgow, United Kingdom
  • Barts and The London School of Medicine and Dentistry, Haemophilia Centre
    London, United Kingdom
  • Hammersmith
    London, United Kingdom
  • St Thomas' Hospital
    London, United Kingdom
  • Churchill Hospital, Oxford Hemophilia and Thrombosis Center
    Oxford, United Kingdom
  • University Hospital Southampton NHS Foundation Trust
    Southampton, United Kingdom
09

References and documents

Publications

  • Quinn J, Delaney KA, Wong WY, Miesbach W, Bullinger M. Psychometric Validation of the Haemo-QOL-A in Participants with Hemophilia A Treated with Gene Therapy. Patient Relat Outcome Meas. 2022 Jul 18;13:169-180. doi: 10.2147/PROM.S357555. eCollection 2022. PubMed 35879931 ↗
  • Ozelo MC, Mahlangu J, Pasi KJ, Giermasz A, Leavitt AD, Laffan M, Symington E, Quon DV, Wang JD, Peerlinck K, Pipe SW, Madan B, Key NS, Pierce GF, O'Mahony B, Kaczmarek R, Henshaw J, Lawal A, Jayaram K, Huang M, Yang X, Wong WY, Kim B; GENEr8-1 Trial Group. Valoctocogene Roxaparvovec Gene Therapy for Hemophilia A. N Engl J Med. 2022 Mar 17;386(11):1013-1025. doi: 10.1056/NEJMoa2113708. PubMed 35294811 ↗
  • Rosen S, Tiefenbacher S, Robinson M, Huang M, Srimani J, Mackenzie D, Christianson T, Pasi KJ, Rangarajan S, Symington E, Giermasz A, Pierce GF, Kim B, Zoog SJ, Vettermann C. Activity of transgene-produced B-domain-deleted factor VIII in human plasma following AAV5 gene therapy. Blood. 2020 Nov 26;136(22):2524-2534. doi: 10.1182/blood.2020005683. PubMed 32915950 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Dec 2017 to primary completion in Nov 2020, 34 months.

Results were first posted in Nov 2023, 3 years after primary completion. A results delay was requested in Nov 2021.

Of 89 industry-sponsored phase 3 interventional studies under Hemophilia A, half reached primary completion within 32 months of starting (the median), counting those still running; a quarter within 18 and three quarters within 56. This study's 34 months is close to that.

Counting every sponsor, half of 91 studies reached it within 33 months; a quarter within 20 and three quarters within 56.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 27, 2017
First posted
Dec 13, 2017
StartActual
Dec 19, 2017
Primary completionActual
Nov 16, 2020
CompletionActual
Nov 20, 2024
Results delay requested
Nov 11, 2021
Results first posted
Nov 28, 2023
Last update
Mar 25, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 25, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03370913
Responsible party
Sponsor
First posted
Dec 13, 2017
Start date
Dec 19, 2017
Primary completion
Nov 16, 2020
Completion
Nov 20, 2024
Results posted
Nov 28, 2023
Last update
Mar 25, 2025

Study contacts

Medical Monitor, MD
study director · BioMarin Pharmaceutical

Oversight

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

Not currently enrolling

This study is completed, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Valoctocogene Roxaparvovec

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