E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Hereditary angioedema (HAE) in adults patients with C1-esterase inhibitor deficiency |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 12.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10019860 |
E.1.2 | Term | Hereditary angioedema |
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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 compare the efficacy of icatibant with placebo on the time to symptom relief using a composite Visual Analog Scale (VAS) during moderate to very severe acute cutaneous and/or abdominal attacks in patients with type I or type II hereditary angioedema (HAE) |
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E.2.2 | Secondary objectives of the trial |
a) To compare the efficacy of icatibant with placebo on the time to onset of symptom relief using the VAS score for a single primary symptom
b) To compare the efficacy of icatibant with placebo on the time to symptom relief using a composite VAS score during moderate to very severe acute cutaneous/abdominal attacks and randomized mild to moderate laryngeal attacks
c) To compare the global outcome following treatment with icatibant or placebo using patient-reported and physician-reported outcome measures
d) To compare the time to almost complete symptom relief following treatment with icatibant or placebo during moderate to very severe acute cutaneous and/or abdominal attacks
e) To assess safety and tolerability of icatibant compared with placebo
f) To assess the efficacy and safety of icatibant treatment in patients experiencing laryngeal edema attacks
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Each patient must meet the following criteria to be enrolled in this study:
1) The patient is ≥18 years old at the time of informed consent. 2) The patient has a documented diagnosis of HAE type I or II. The diagnosis will be confirmed either by documented decreased C4 levels and/or immunogenic or functional C1-INH deficiency results (<50% of normal levels) consistent with HAE types I and II or by medical history. Inclusion will be permitted initially based on medical history alone only if a clear diagnosis has been made using all of the following criteria:
a. Family history b. Characteristic attack manifestations, recurrent attacks c. Historical functional C1-INH (<50% of normal levels) d. Exclusion of other forms of angioedema including acquired angioedema based on normal C1q levels at time of screening. e. Subsequent confirmation of the diagnosis is to be made by C1-INH level and function, and C1q and C4 results measured in a central laboratory. If there are any discrepancies between the local laboratory results and medical history, the patient can only be included in the efficacy analysis if diagnosis of HAE has been clearly confirmed clinically and a rationale for the functional level of C1-INH ≥50% of normal can be given; these specific cases are to be discussed with the Sponsor prior to treatment. If there is a discrepancy between C4 and C1-INH levels, the results will be reviewed by the sponsor but C1-INH levels will be used to determine eligibility of the patient.
3) The current HAE attack must be in the cutaneous, abdominal and/or laryngeal (inclusive of laryngeal and pharyngeal) areas.
4) Cutaneous or abdominal HAE attacks must be moderate to very severe as determined by investigator global assessment at pretreatment assessments.
5) The patient must report at least 1 VAS score ≥30mm.
6) The patient commences treatment within 6 hours of the attack becoming at least mild (laryngeal) or moderate (non-laryngeal) in severity, but not more than 12 hours after the onset of the attack.
7) The patient must have voluntarily signed an Institutional Review Board/Independent Ethics Committee-approved informed consent form after all relevant aspects of the study have been explained and discussed with the patient.
8) Women of childbearing potential must have a negative urine pregnancy test and must use appropriate methods to prevent pregnancy during their participation in the study.
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E.4 | Principal exclusion criteria |
Patients who meet any of the following criteria will be excluded from the study:
1) The patient has a diagnosis of angioedema other than HAE (non-hereditary angioedema, eg, acquired angioedema).
2) The patient has received previous treatment with icatibant.
3) The patient has participated in a clinical trial and has received treatment with another investigational medicinal product within the past 30 days.
4) The patient has received treatment with any pain medication since the onset of the current angioedema attack.
5) The patient has received replacement therapy (fresh frozen plasma [FFP], C1-INH products) less than 5 days (120 hours) from the onset of the current angioedema attack.
6) The patient is receiving treatment with angiotensin converting enzyme (ACE) inhibitors.
7) The patient has evidence of coronary artery disease based on medical history at the Screening examination or at pretreatment; eg, unstable angina pectoris or severe coronary heart disease and congestive heart failure, that in the Investigator’s judgment would be a contraindication for participation in the trial. (New York Heart Association [NYHA] class 3 and 4).
8) The patient has a serious concomitant illness or condition that, in the opinion of the Investigator, would be a contraindication for participation in the trial.
9) The patient is pregnant or breastfeeding.
10) The patient is unable to understand the nature, scope, and possible consequences of the protocol, or is unlikely to comply with the protocol assessments, unable to return for follow up visits, or unlikely to complete the study for any reason.
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E.5 End points |
E.5.1 | Primary end point(s) |
Time to symptom relief for the first attack (cutaneous and/or abdominal), as assessed by the patient and defined as a 50% reduction from the pretreatment score in the 3-symptom composite VAS |
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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 | No |
E.6.3 | Therapy | No |
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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
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 | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
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 | Yes |
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.8.4.1 | 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 | 4 |
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 | Information not present in EudraCT |
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 |
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E.8.7 | Trial has a data monitoring committee | No |
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
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The double-blind phase of the study is anticipated to take approximately 12 months from the start of treatment of the first patient and will close with the Day 14 assessment for the last patient’s first attack. The study will be closed to enrollment when 88 patients with abdominal and/or cutaneous symptoms have completed the double-blind phase of the study. |
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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 | 2 |
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 |