E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
|
E.1.1.1 | Medical condition in easily understood language |
|
E.1.1.2 | Therapeutic area | Diseases [C] - Blood and lymphatic diseases [C15] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10056492 |
E.1.2 | Term | Haemophilia A with anti factor VIII |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
|
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The objective of this study is to evaluate the efficacy and safety of a prophylactic regimen with rFVIIa in reducing the frequency of joint bleeds and the development of signs of joint damage including synovitis, as measured by the Hemophilia Joint Health Score (HJHS), in children with haemophilia A who develop high-responding inhibitors. |
|
E.2.2 | Secondary objectives of the trial | |
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• Male patients with haemophilia A who have been treated with FVIII on demand or on prophylaxis and who have developed inhibitors to FVIII.
• Age < 8 years.
• ≤ 2 years from the time of first inhibitor detection.
• High-responding inhibitors (historical peak > 5 BU/mL) and known anamnestic response in case of negative inhibitor titre.
• Patient is candidate for daily ITI treatment with doses of FVIII ranging from 50 IU/kg/day to 200 IU/kg/day.
• Maximal two bleedings in the same joint within the last 6 months before entering the study or maximal six joint bleeds in the same joint within 2 years.
• Adequate venous access for daily infusion and capable (patient or caregiver) of reconstituting and injecting the study drug (as judged by the Investigator).
• Informed consent by parents or legal guardians. |
|
E.4 | Principal exclusion criteria |
• ITI already started.
• Known or suspected hypersensitivity to the active substance, or to any of the excipients of the study drug, or to mouse, hamster or bovine protein.
• Administration of any investigational product within 30 days prior to randomisation.
• Other coagulation disorders than congenital haemophilia A.
• Family history of thrombosis at an early age (< 40 years), known thrombophilia, any previous thrombosis including catheter-related deep vein thrombosis, previous neonatal thrombosis.
• Known pseudo tumours.
• Known severe liver disease.
• Platelet count < 50,000 platelets/µL at screening.
• Surgery within one month or planned major and/or orthopaedic surgery. |
|
E.5 End points |
E.5.1 | Primary end point(s) |
Total number of joint bleeds. |
|
E.5.1.1 | Timepoint(s) of evaluation of this end point |
The last assessment of efficacy (clinical outcome) will take place at the final visit (Month 18, or earlier if the patient has achieved factor VIII recovery >= 25% or prematurely discontinues the study). For the evaluation of efficacy, clinical outcome measures (such as bleeding episodes) as of randomisation will be taken into account. Primary endpoint |
|
E.5.2 | Secondary end point(s) |
• Number of re-bleeds in the same joint (re-bleed is defined as bleed occurring in the same joint within 72 hours of last treatment given).
• Time interval between haemorrhages in the same joint.
• Number of non-joint bleeds.
• Number of life threatening bleeds.
• Number of limb-threatening bleeds.
• Total number of all bleeds.
• Joint status evaluated by the HJHS.
• Days of hospitalisation, days lost from school/work (caregivers).
• Adherence to the assigned treatment regimen.
|
|
E.5.2.1 | Timepoint(s) of evaluation of this end point |
The last assessment of efficacy (clinical outcome) will take place at the final visit (Month 18, or earlier if the patient achieves FVIII recovery 25% or prematurely discontinues the study). |
|
E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | Yes |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
On-demand regimen is compared to prophylactic regimen |
|
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.4.1 | Number of sites anticipated in Member State concerned | 1 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 18 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
|
E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
|
|
E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | 9 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 8 |