Long-term Study Evaluating Joint Health in People With Haemophilia A Receiving Real-world Prophylactic Treatment With Efanesoctocog Alfa

ConditionHemophilia A
Trial statusRecruiting
Trial phasePhase 4
Trial typeInterventional
Biological sexAll
AgeNot listed
SponsorSwedish Orphan Biovitrum

About this trial

The rationale for this study is to further understand and describe the long-term prophylactic effectiveness of efanesoctocog alfa in preventing joint bleeds in a real-life setting.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Male or female patient with a diagnosis of haemophilia A.

Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.

Prescribed with efanesoctocog alfa prophylactic treatment within 6 months prior to study enrolment or at the latest at the enrolment visit, in accordance with local regulations.

Must have received prophylactic treatment(s) with any haemophilia product(s) for at least 12 months prior to being prescribed with efanesoctocog alfa treatment.

Disqualifiers

Acquired haemophilia A and other blood clotting disorders than hereditary haemophilia A.

Any positive FVIII inhibitor result (defined as inhibitor titre ≥0.6 Bethesda unit [BU]/mL) from the medical records in connection to the switch to efanesoctocog alfa until the enrolment visit.

Enrolment in a concurrent clinical interventional study, or intake of an investigational medicinal product (IMP), including for haemophilia prophylaxis, within 3 months prior to enrolment in this study.

Patient not suitable for participation, whatever the reason, as judged by the Investigator, e.g., patient is not able or willing to perform the study assessments.

Trial design

Design model

Single group

Treatments tested in this trial

  • Efanesoctocog alfa

    Drug

    Participant in this study must be prescribed efanesoctocog alfa prophylactic treatment per their standard of care from their physician. No drug will be provided by the Sponsor.

Treatment groups

250 Participants
are divided into 1 treatment group
Group A: Study Treatment GroupOther 1 intervention

Trial outcomes

Primary outcomes

1

Annualized joint bleeding rate (AjBR) over the prospective observation period.

Time frame
Enrolment to Month 12, 24 and 36

Secondary outcomes

1

Annualized bleeding rate (ABR) over the prospective observation period.

Time frame
Enrolment to Month 12, 24 and 36
2

Number of injections to control a bleeding event over the prospective observation period.

Time frame
Enrolment to Month 12, 24 and 36
3

Total dose to control bleeding event over the prospective observation period.

Cumulative amount of medication administered to effectively manage bleeding episodes.

Time frame
Enrolment to Month 12, 24 and 36
4

Haemophilia Joint Health Score (HJHS) version 2.1

Change from enrolment in total and domain scores of HJHS per patient.

Time frame
Enrolment to Month 12, 24 and 36

Other outcomes

Sponsors and contacts

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