Research Study to Look at How Well the Drug Concizumab Works in Your Body if You Have Haemophilia With Inhibitors (explorer7)
Haemophilia A With Inhibitors, Haemophilia B With Inhibitors
About this trial
This is an interventional treatment trial for Haemophilia A With 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 Haemophilia A or B of any severity with documented history of inhibitor (equal to or above 0.6 Bethesda Units (BU).
- Patient has been prescribed, or in need of, treatment with bypassing agents in the last 24 weeks prior to screening (for patients not previously enrolled in NN7415-4310 (explorer 4)).
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.
- Ongoing or planned Immune Tolerance Induction treatment.
- 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
Arm 2: Concizumab prophylaxis
Arm 3: Concizumab prophylaxis
Arm 4: Concizumab prophylaxis
Haemophilia A with inhibitors (HAwI) and haemophilia B with inhibitors (HBwI) patients, previously treated on-demand, will be randomised 1:2 to no prophylaxis versus concizumab prophylaxis. In the extension part, patients in arm 1 will receive daily concizumab subcutaneous (s.c., under the skin) injections.
HAwI and HBwI patients, previously treated on-demand, will be randomised 1:2 to no prophylaxis versus concizumab prophylaxis.
The HAwI and HBwI patients enrolled into the concizumab phase 2 trial (NN7415-4310) at time of transfer will be offered enrolment into this trial. It is required that these patients are on concizumab prophylaxis up until enrolment into the trial. These patients will continue concizumab prophylaxis.
Patients previously on prophylaxis with by-passing agents and on-demand patients who are screened at a timepoint where the required number of patients in arms 1 and 2 have been randomised. These patients will, if eligible, be enrolled into the trial and will initiate concizumab prophylaxis at visit 2a (week 0).