Safety of Ruconest in 2-13 Year Old Hereditary Angioedema (HAE) Patients

Phase 2

Completed

Brief Summary: This open-label study is being conducted to confirm the safety, pharmacokinetic profile and efficacy of Ruconest at a dose of 50 U/kg when used for the treatment of acute angioedema attacks in patients, from 2 up to and including 13 years of age.

Detailed Description: This study was an open-label, Phase 2, non-comparative, multinational, multicenter clinical study in pediatric patients from 2 up to and including 13 years of age, with a confirmed diagnosis of HAE. Patients were eligible for treatment with recombinant human C1-inhibitor (rhC1INH) if they presented to the clinic within 5 hours of onset with an acute attack of at least moderate severity without signs of spontaneous regression. Patients received rhC1INH at a dose of 50 U/kg body weight up to a maximum of 4200 U. The reconstituted solution was administered as a slow intravenous (iv) injection over approximately 5 minutes. The patients remained in hospital and were closely monitored in the study center for at least 4 hours after study medication administration.

Recruitment & Eligibility

Inclusion Criteria

From 2 up to and including 13 years of age
Clinical and laboratory confirmed diagnosis of HAE (baseline C1INH activity <50% of normal)
Signed written Informed Consent Form (ICF)(parental permission) signed by the legal guardian(s)
Clinical symptoms of an acute HAE attack
Onset of eligible symptoms within 5 hours from the moment at which medical evaluation to determine eligibility has occurred
Attack severity moderate or greater, as rated by the investigator

Exclusion Criteria

A diagnosis of acquired C1INH deficiency (AAE)
A medical history of allergy to rabbits or rabbit-derived products or positive anti-rabbit epithelium (dander) immunoglobuline E (IgE) test

Arm && Interventions

Group	Intervention	Description
Recombinant Human C1 Inhibitor	rhC1INH	Patients presented to the clinic within 5 hours of onset received rhC1INH 50 U/kg body weight up to a maximum of 4200 U.

Primary Outcome Measures

Name	Time	Method
Time to Beginning of Relief Based on Visual Analogue Scale (VAS) Was Defined as the Time, in Minutes, From Time of Infusion to the Beginning of Relief.	The assessment of the angioedema signs by the VAS and TEQ will be performed just before start of infusion, and at T30m, T1h, T2h, T4h, T8h and T24h after study medication infusion VAS score decrease of ≥ 20 mm from baseline.	Time to beginning of relief of symptoms that showed the response to treatment based on the overall VAS score decrease of ≥ 20 mm from baseline. Separate VAS forms will be given to express the current feelings considering the severity of angioedema symptoms for five possible anatomical locations. The form will be completed by placing vertical marks on each of the 100 mm horizontal lines. The Abdominal VAS measures the patient's perceptions relating to illness, pain, bloodedness, and nausea; the oro-pharyngeal-laryngeal (OPL) VAS measures illness, pain, swelling, breathing, speech, and swallowing; the facial VAS instrument measure illness, pain and swelling; the Peripheral VAS measures swelling, pain, and use of extremity; and the Urogenital VAS measures illness, pain, swelling, nausea, and urination. Time to beginning of relief will also be calculated based on the Investigator Score (IS) and Treatment Effect Questionnaire (TEQ).

Secondary Outcome Measures

Name	Time	Method
Time to Minimal Symptoms Based on Patient's VAS Scores; Time From the Start of the Infusion of Study Medication to the First Assessment Time at Which the Overall Severity VAS Reaches a Value of Less Than 20 mm for All Locations	The assessment of the angioedema signs by the VAS and TEQ will be performed just before start of infusion, and at T30m, T1h, T2h, T4h, T8h and T24h after study medication infusion all locations where VAS Scores were recorded.	Time to minimal symptoms was defined as the time at which the Overall VAS score fell below 20 mm for all locations where VAS Scores were recorded. Separate VAS forms will be given to express the current feelings considering the severity of angioedema symptoms for five possible anatomical locations. The form will be completed by placing vertical marks on each of the 100 mm horizontal lines provided to answer each question related to the severity of symptoms and the patient's condition. The Abdominal VAS measures the patient's perceptions relating to illness, pain, bloodedness, and nausea; the OPL VAS measures illness, pain, swelling, breathing, speech, and swallowing; the facial VAS instrument measure illness, pain and swelling; the Peripheral VAS measures swelling, pain, and use of extremity; and the Urogenital VAS measures illness, pain, swelling, nausea, and urination.

Locations (15): Sheba Medical Center
🇮🇱
Tel Hashomer, Israel
Mures County Clinical Hospital
🇷🇴
Targu Mures, Romania
Bnei Zion Hospital
🇮🇱
Haifa, Israel
Pediatric Hospital
🇵🇱
Lublin, Poland
Heim Pál Gyermekkórház, II. számú Gyermek Belgyógyászati Osztály
🇭🇺
Budapest, Madarász Utca 22-24, Hungary
Souraski Medical Center
🇮🇱
Tel-Aviv, Israel
Klinika detí a dorastu, Univerzitna nemocnica Martin
🇸🇰
Martin, Kollárova 2, Slovakia
UIA FN Plzen ( Institute of Immunology and Allergology), Faculty Hospital Plzen
🇨🇿
Plzen, Alej Svobody 80, Czechia
Portland Clinical Research/AAIM Care, LLC
🇺🇸
Portland, Oregon, United States
University Hospital Motol, Institute of Immunology
🇨🇿
Prague, V Úvalu 84, Czechia
Charité - Universitätsmedizin Berlin
🇩🇪
Berlin, Charitéplatz 1, Germany
Klinikum Rechts der Isar, Technical University Munich
🇩🇪
Munich, Germany
Hospital Luigi Sacco
🇮🇹
Milan, Italy
Azienda Ospedaliera Universitaria S. Giovanni di Dio e Ruggi d'Aragona
🇮🇹
Salerno, Italy
University Clinic Of Dermatology Skopje
🇲🇰
Skopje, North Macedonia