Recombinant Human C1 Inhibitor for the Treatment of Acute Attacks in Patients With Hereditary Angioedema

February 20, 2013 updated by: Pharming Technologies B.V.

A Randomized, Placebo-controlled, Double Blind Phase II/III Study of the Safety and Efficacy of Recombinant Human C1 Inhibitor for the Treatment of Acute Attacks in Patients With Hereditary Angioedema

Hereditary angioedema ("HAE") is a genetic disorder characterized by sudden recurrent attacks of local swelling (angioedema). These attacks are often painful and disabling, and, in some cases, life-threatening. "HAE" is caused by mutations in the "C1INH" gene that lead to a decrease in the blood level of functional "C1INH". This multi-center study was designed to assess the safety and tolerability, efficacy, and pharmacokinetics/pharmacodynamics of recombinant human C1 inhibitor ("rhC1INH") in the treatment of acute hereditary angioedema attacks.

Funding Source - FDA OOPD

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

A prospectively planned interim analysis will be performed on the double-blind data.

Study Type

Interventional

Enrollment (Actual)

77

Phase

  • Phase 2
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Netherlands
      • Leiden, Netherlands, 2300 AL
        • For information on sites please contact Pharming Medical Affairs Department

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

12 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Main Inclusion Criteria:

  • Clear clinical and laboratory diagnosis of HAE
  • Plasma level of functional C1INH of less than 50% of normal
  • Acute abdominal, urogenital, peripheral, and/or oro-facial/pharyngeal/laryngeal HAE attack

Main Exclusion Criteria:

  • Acquired angioedema
  • Pregnancy or breastfeeding
  • Treatment with any investigational drug within prior 30 days
  • Body weight >120 kg

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Saline
Drug: placebo
saline solution
Other Names:
  • saline
  • physiological salt solution
Experimental: 100 IU/kg rhC1INH
100 IU/kg Recombinant human C1 inhibitor
Drug: Recombinant Human C1 Inhibitor
IV
Other Names:
  • Ruconest
  • "rhC1INH"
  • conestat alfa
Experimental: 50 IU/kg rhC1INH
50 IU/kg Recombinant human C1 inhibitor
Drug: Recombinant Human C1 Inhibitor
IV
Other Names:
  • Ruconest
  • "rhC1INH"
  • conestat alfa

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to Beginning of Relief of Symptoms
Time Frame: up to 48 hours after study drug administration
The time to beginning of relief of symptoms at the location that showed the first visual analogue scale ("VAS") score decrease of at least 20 mm from baseline score with persistence to the next timepoint, assessment timepoints were taken on pre-scheduled time-points after study drug administration: baseline (0 minutes), 15 minutes, 30 minutes, 1 hour, 2 hours, 4 hours, 8 hours, 12 hours, 16 hours, 24 hours and 48 hours. Time to beginning of relief has been calculated as median time, by using the exact timepoints on which each assessment was performed.
up to 48 hours after study drug administration

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to Minimal Symptoms
Time Frame: up to 48 hours after study drug administration
The time to minimal symptoms was the time to minimal symptoms for an attack, assessed using the Visual Analogue Scale ("VAS") score. Symptoms were said to be minimal when the "VAS" score at all locations was below 20 mm. Assessment timepoints were: baseline, 15 minutes, 30 minutes, 1 hour, 2 hours, 4 hours, 8 hours, 12 hours, 16 hours, 24 hours and 48 hours. Time to minimal symtoms has been calculated by using the exact timepoints on which each assessment was performed.
up to 48 hours after study drug administration

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Pharming Technologies B.V.

Investigators

  • Study Director: Anurag Relan, MD, Pharming Group N.V.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2005

Primary Completion (Actual)

October 1, 2009

Study Completion (Actual)

January 1, 2010

Study Registration Dates

First Submitted

September 20, 2005

First Submitted That Met QC Criteria

September 21, 2005

First Posted (Estimate)

September 23, 2005

Study Record Updates

Last Update Posted (Estimate)

February 22, 2013

Last Update Submitted That Met QC Criteria

February 20, 2013

Last Verified

February 1, 2013

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • C1 1205-01

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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