Research Study to Look at How Well the Drug Concizumab Works in Your Body if You Have Haemophilia Without Inhibitors (explorer8)
Haemophilia A Without Inhibitors, Haemophilia B Without Inhibitors
About this trial
This is an interventional treatment trial for Haemophilia A Without Inhibitors
Eligibility Criteria
Inclusion Criteria:
- Informed consent obtained before any trial-related activities. Trial-related activities are any procedures that are carried out as part of the trial, including activities to determine suitability for the trial.
- Male aged 12 years or older at the time of signing informed consent.
- Congenital severe haemophilia A (FVIII below 1%) or B (FIX equal to or below 2%).
Exclusion Criteria:
- Known or suspected hypersensitivity to any constituent of the trial product or related products.
- Known inherited or acquired coagulation disorder other than congenital haemophilia.
- Presence of confirmed inhibitors 0.6 BU or greater at screening.
- History of thromboembolic disease (includes arterial and venous thrombosis including myocardial infarction, pulmonary embolism, cerebral infarction/thrombosis, deep vein thrombosis, other clinically significant thromboembolic events and peripheral artery occlusion). Current clinical signs of, or treatment for thromboembolic disease. Patients who in the judgement of the investigator are considered at high risk of thromboembolic events (thromboembolic risk factors could include, but are not limited to, hypercholesterolemia, diabetes mellitus, hypertension, obesity, smoking, family history of thromboembolic events, arteriosclerosis, other conditions associated with increased risk of thromboembolic events.)
Sites / Locations
- Novo Nordisk Investigational Site
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Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Experimental
Experimental
Experimental
Experimental
Arm 1: No prophylaxis (PPX)
Arm 2: Concizumab prophylaxis
Arm 3: Concizumab prophylaxis
Arm 4: Concizumab prophylaxis
Haemophilia A (HA) and haemophilia B (HB) patients, previously treated on-demand, will be randomised 1:2 to no prophylaxis versus concizumab prophylaxis. In the extension phase, this group will receive treatment with concizumab.
HA and HB patients, previously treated on-demand, will be randomised 1:2 to no prophylaxis versus concizumab prophylaxis.
The HA patients enrolled into the concizumab phase 2 trial NN7415-4255 (explorer 5) will be offered enrolment into this arm.
Arm 4 will include patients previously on prophylaxis with factor products with a minimum of 24 weeks observation in NN7415-4322 (explorer 6) (at least 30 HA and 30 HB patients). In addition, arm 4 will also include: 1) Patients who were randomised to arms 1 and 2 before the treatment pause. 2) HA patients who were in NN7415-4255 (explorer 5) at the time of the treatment pause, and who have now completed explorer 5. 3) On demand patients included after arms 1 and 2 are closed.