E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
Hereditary blood disorder characterized by spontaneous bleeding episodes |
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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 | 14.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10060614 |
E.1.2 | Term | Hemophilia B (Factor IX) |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate the pharmacokinetics, safety and efficacy of IB1001 in previously treated pediatric subjects with hemophilia B |
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E.2.2 | Secondary objectives of the trial |
1. To obtain tolerance and compliance information on pediatric subject response to an intravenously delivered recombinant factor IX product, IB1001
2. To evaluate the safety of IB1001 during the 50 exposure days treatment course
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1) Subject’s parent or legal guardian must give written informed consent and be willing to make the required study visits and follow instructions while enrolled in the study. For subjects ≥7 years of age, assent will be obtained if required by the institution. For subjects < 7 years of age, legal assent is not reasonable to obtain.
2) Severe (factor IX activity≤ 2 IU/dL) hemophilia B subjects on demand therapy with a minimum of 2 bleeding episodes requiring factor IX therapy over the preceding 6 months or 4 bleeding episodes over the preceding 12 months; subjects on prophylaxis with a bleeding pattern similar to that described above prior to starting prophylaxis. In children under 5 years of age, severity may be indicated by the occurrence of one or more joint bleeds at any point in the child’s history requiring infusion(s) to replace factor IX.
3) Immunocompetent (CD4 count >400/mm3) and not receiving immune modulating or chemotherapeutic agents
4) Previously treated subjects with a minimum of 50 exposure days to a factor IX preparation
5) Platelet count at least 150,000/mm3
6) Liver function: alanine transaminase and aspartate transaminase ≤2 times the upper limit of the normal range
7) Total bilirubin ≤1.5 times the upper limit of the normal range
8) Renal function: serum creatinine ≤1.25 times the upper limit of the normal range
9) Willingness to participate in the trial for approximately 6 months (50 exposure days)
10) Age ≤12 years
11) Hemoglobin ≥7 g/dL at the time of the screening blood draw |
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E.4 | Principal exclusion criteria |
1) History of factor IX inhibitor ≥ 0.6 Bethesda units
2) Existence of another coagulation disorder
3) Evidence of thrombotic disease, fibrinolysis, or disseminated intravascular coagulation
4) Use of an investigational drug within 30 days prior to study entry
5) On medications that could impact hemostasis, such as aspirin
6) History of poor compliance, a serious medical or social condition, or any other circumstance that, in the opinion of the investigator, would interfere with participation or compliance with the study protocol
7) History of adverse reaction to either plasma-derived factor IX or recombinant factor IX that interfered with the subject’s ability to treat bleeding episodes with a factor IX product |
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E.5 End points |
E.5.1 | Primary end point(s) |
PK:
- Cmax
- Incremental recovery
- AUC
- Clearance
- t1/2
Efficacy:
- Control of breakthrough bleeding;
- Degree of hemorrhage control;
- Factor IX consumption
- Annualized bleeding rates
Safety:
- Adverse events (acute effects)
- Inhibitor development
- Thrombogenicity |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
PK: samples for factor IX level will be drawn pre-infusion and at 15-30 minutes, 4-6 hours, 24-26 hours and 68-72 hours post-infusion; additional time points at 1-3 hours and 10-14 hours will be drawn when possible
Efficacy: A diary to record information about each bleeding episode will be maintained during the treatment and reviewed by the investigator at visits every three months.
Safety:
Inhibitors: Prior to the first infusion of IB1001, after the first 5 infusions, during the intervals ED 10-15, at the three
month visit (approximately ED 25), during the interval ED 50-75, and at study termination
Adverse events: at each study visit
Thrombogenicity markers: (D-dimer, F1+2, TAT) pre-infusion and at 15-30 minutes , 4-6 hours and 24-26 hours post infusion |
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E.5.2 | Secondary end point(s) |
Safety:
adverse events (long term tolerance and compliance)
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Subject diary will be evaluated at each study visit every three months. |
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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 | Yes |
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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
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 | No |
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.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 8 |
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 |
Brazil |
India |
Turkey |
United States |
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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
|
Last patient last visit. If IB1001 is not approved for marketing at the conclusion of the study, subjects will be invited to receive IB1001 for one year or up to the potential country-specific product licensure. |
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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 | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
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 | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |