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Genetic DisordersPhase 2OPERANCT00851409

A Study of the Safety and Immunogenicity of Repeated rhC1INH Administration

A Phase 2 study testing Recombinant Human C1 Inhibitor in people with Genetic Disorders and Hereditary Angioedema, run by Pharming Technologies B.V. at 2 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

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. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Genetic Disorders, Hereditary Angioedema
What is being tested?
Recombinant Human C1 Inhibitor
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
25 participants
Where
2 sitesin 2 countries
Study dates
Jun 2009to Apr 2010
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 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.

Who cannot join

  • 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
Show all 10Show fewer
  • 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.

Trial locations and contacts

2 sites in 2 countries.

2 sites in 2 countries

Netherlands1 site
  • For information on sites, please contact Pharming Technologies

    Leiden

Other trials in Netherlands

Romania1 site
  • Emergency County Hospital, Internal Medicin Clinica, Allergology-Immunology Department

    Târgu Mureş, 541103

Other trials in Romania

About this study

Official title: 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").

Being tested
Recombinant Human C1 Inhibitor
Medical subject headings
Genetic Diseases, Inborn, Angioedemas, Hereditary

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Recombinant Human C1 InhibitorDrug

    Also called "rhC1INH", Ruconest

    50 IU/kg "rhC1INH", "IV" injection over 4 to 5 minutes, once weekly over an 8-week treatment period.

Study groups in NCT00851409
Study groupRoleWhat they receive
Recombinant Human C1 InhibitorOtherWeekly administration of 50 IU/kg Recombinant Human C1 Inhibitor
Receives: Drug: Recombinant Human C1 Inhibitor

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. HAE Attacks/Week

    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).

    Measured: 8 weeks

Secondary outcomes (1)
  1. The Evaluation of Pharmacokinetic/ Pharmacodynamic ("PK/PD")Parameters.

    "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)

    Measured: 8 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Feb 2009 (estimated)
  2. Study startJun 2009
  3. Primary completionMar 2010
  4. Study completionApr 2010

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
25 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00851409
Sponsor's protocol ID
C1 1207
Acronym
OPERA
Status last verified
Apr 2018
First submitted
25 Feb 2009
Last updated
26 Jun 2018
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Recombinant Human C1 Inhibitor in people with Genetic Disorders and Hereditary Angioedema, run by Pharming Technologies B.V. at 2 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 26 Jun 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Netherlands, Romania. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 31 Jan 2013). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

HAE Attacks/Week (time frame: 8 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Jun 2018.

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