A Study of the Safety and Immunogenicity of Repeated rhC1INH Administration (OPERA)

April 3, 2018 updated by: Pharming Technologies B.V.

An Open-label Exploratory Phase II Study of the Safety and Immunogenicity of Repeated "rhC1INH" Administration of 50 U/Kg in Patients With Hereditary C1 Inhibitor Deficiency ("HAE")

Hereditary angioedema ("HAE") is a disease characterized by recurrent tissue swelling affecting various body locations. Recent literature shows that patients with frequent attacks may benefit from long-term prophylaxis. This study aims to evaluate the safety and prophylactic effect of weekly administrations of 50 IU/kg recombinant C1 Inhibitor ("rhC1INH").

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

25

Phase

  • Phase 2

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
        • For information on sites, please contact Pharming Technologies
  • Romania
      • Târgu-Mureş, Romania, 541103
        • Emergency County Hospital, Internal Medicin Clinica, Allergology-Immunology 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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Aged at least 18 years
  • Signed informed consent
  • Comfirmed diagnosis of HAE with baseline plasma level of functional C1INH activity of less than 50% of normal, and/or proven HAE ,mutation in C1INH gene.

Exclusion Criteria:

  • A history of anaphylaxis or severe allergy (i.e. requiring medication) to food, proteins and/or drugs.
  • A history of allergic reactions to C1INH products or rabbit protein.
  • Any reported SAE related to study drug administration (withdrawal criterium)
  • Elevated IgE against rabbit dander (>0.35 kU/L; ImmunoCap assay; Phadia)
  • A diagnosis of acquired C1INH deficiency.
  • Woman of child bearing potential, pregnancy or breast-feeding
  • previous treatment within the last 3 months with plasma-derived C1INH
  • Any clinically significant abnormality in the routine haematology, biochemistry and urinalysis
  • Any condition or treatment that in the opinion of the investigator might interfere with the evaluation of the study objectives.
  • Any changes since screening that would exclude subject based on above exclusion criteria.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Recombinant Human C1 Inhibitor
Weekly administration of 50 IU/kg Recombinant Human C1 Inhibitor
Drug: Recombinant Human C1 Inhibitor
50 IU/kg "rhC1INH", "IV" injection over 4 to 5 minutes, once weekly over an 8-week treatment period.
Other Names:
  • Ruconest
  • "rhC1INH"

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
HAE Attacks/Week
Time Frame: 8 weeks
Prior to the treatment period, patients enrolled in the study, were asked about the amount of "HAE" attacks in the past 2 years, (calculated to attacks/week), this number is defined as "Historical". During the treatment period, patients received a dose of 50 IU/kg of "rhC1INH" administered by slow "IV" injection over 4 to 5 minutes, once a week during an eight week period. The amount of attacks during this period is defined as "Prophylaxis" (calculated to attacks/week).
8 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The Evaluation of Pharmacokinetic/ Pharmacodynamic ("PK/PD")Parameters.
Time Frame: 8 weeks
"PK/PD" parameters will be based on concentration time curves after the 1st and 8th "rhC1INH" administration.(ratio visit 8/ visit 1, based on the area under the curve from baseline up to 4 hours after administration (AUC 0-4)
8 weeks

Collaborators and Investigators

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

Sponsor

Pharming Technologies B.V.

Investigators

  • Study Chair: Bruno Giannetti, MD, COO Pharming

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

June 1, 2009

Primary Completion (Actual)

March 1, 2010

Study Completion (Actual)

April 1, 2010

Study Registration Dates

First Submitted

February 25, 2009

First Submitted That Met QC Criteria

February 25, 2009

First Posted (Estimate)

February 26, 2009

Study Record Updates

Last Update Posted (Actual)

June 26, 2018

Last Update Submitted That Met QC Criteria

April 3, 2018

Last Verified

April 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • C1 1207

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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