An International Study to Evaluate the Real-world Effectiveness and Usage of Alprolix in Patients With Haemophilia B (B-MORE)
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT03901755 |
Recruitment Status :
Active, not recruiting
First Posted : April 3, 2019
Last Update Posted : May 12, 2022
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Condition or disease | Intervention/treatment |
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Hemophilia B | Drug: Alprolix |
Study Type : | Observational |
Actual Enrollment : | 151 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | A 24-month Prospective, Non-interventional, International, Multicentre Study to Describe the Real-world Effectiveness and Usage of Alprolix in Patients With Haemophilia B |
Actual Study Start Date : | September 12, 2019 |
Estimated Primary Completion Date : | December 2023 |
Estimated Study Completion Date : | June 2024 |

Group/Cohort | Intervention/treatment |
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Prophylactic patients
Alprolix will be prescribed according to local practice and administered by patients with haemophilia B for prophylactic treatment
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Drug: Alprolix
Extended half-life factor IX product
Other Names:
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On demand patients
Alprolix will be prescribed according to local practice and administered by patients with haemophilia B for on-demand treatment
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Drug: Alprolix
Extended half-life factor IX product
Other Names:
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- Annualised bleeding rate (ABR) [ Time Frame: 24 months ]Bleeding episodes assessed according to local practice
- Annualised injection frequency [ Time Frame: 24 months ]Assessed by prescription
- Annualised factor consumption [ Time Frame: 24 months ]Assessed by dispensed factor product

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | Child, Adult, Older Adult |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Have a diagnosis of haemophilia B
- Have started Alprolix treatment prior to enrolment visit, or at enrolment prescribed treatment with Alprolix irrespective of participation in the study
- Signed and dated informed consent provided by the patient, or the patient's legally acceptable representative for patients under the legal age, before any study-related activities are undertaken. Assent should be obtained from paediatric patients according to local regulations.
Exclusion Criteria:
- Participation in an investigational medicinal product trial at enrolment visit

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03901755

Study Director: | Elena Santagostino, MD | Swedish Orphan Biovitrum |
Responsible Party: | Swedish Orphan Biovitrum |
ClinicalTrials.gov Identifier: | NCT03901755 |
Other Study ID Numbers: |
Sobi.Alprolix-002 |
First Posted: | April 3, 2019 Key Record Dates |
Last Update Posted: | May 12, 2022 |
Last Verified: | May 2022 |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Blood Coagulation Disorder Hematologic Diseases Coagulation Protein Disorder Hemorrhagic Disorder Genetic Diseases, Inborn |
Hemophilia A Hemophilia B Blood Coagulation Disorders, Inherited Blood Coagulation Disorders Hematologic Diseases |
Coagulation Protein Disorders Hemorrhagic Disorders Genetic Diseases, Inborn Genetic Diseases, X-Linked |