Safety and Efficacy of Grass Pollen Allergoid in the Treatment of Allergic Rhinoconjunctivitis

June 4, 2014 updated by: Allergopharma GmbH & Co. KG

A Multicentre, Placebo Controlled, Double-Blind Study for Evaluation of Safety and Efficacy of Preseasonal Specific Immunotherapy With an Allergoid Preparation of an Extract of a 6 Grass Pollen Mixture in Patients With Clinically Relevant Grass Pollen Sensitivity

The trial is performed to assess efficacy and safety of the Grass Pollen Allergoid in Allergic Rhinoconjunctivitis

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Pollen allergoids are prepared by chemical modification of partially purified native allergen aqueous extracts that have been depleted of components with a molecular mass of less than 5000 Daltons by diafiltration. Clinical studies have shown a good tolerance of aqueous grass, ragweed and tree pollen allergoids in comparison with allergen preparations. Adsorption of pollen allergoids onto aluminium hydroxide suspensions results in depot preparations which have been investigated in a series of clinical studies and shown to be well tolerated with good clinical efficacy. Depot pollen-allergoids were introduced into the German market in 1987 under the trade name Allergovit® and are now firmly established and recommended primarily for shortcourse preseasonal immunotherapy in pollinosis. Allergovit® is currently available in many European and non-European countries. A placebo-controlled study design was chosen as improvements in the symptoms of pollen allergies can not be shown over time, as pollen seasons of different years are not comparable. Due to the different mechanisms of action, specific immunotherapy can not be compared with anti-allergic drugs. Thus the only chance to prove efficacy for specific immunotherapy (SIT) is to test versus a parallel placebo group.

Study Type

Interventional

Enrollment (Actual)

154

Phase

  • 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

  • Germany
      • Reinbek, Germany, 21465
        • Allergopharma GmbH & Co. KG

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 to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Positive Skin Prick test to grass pollen
  • Positive RAST to grass pollen
  • Positive specific provocation test to grass pollen

Exclusion Criteria:

  • Serious chronic diseases
  • Other perennial allergies

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
Experimental: Allergovit 6-grasses immunotherapy
Seven injections (with 7 to 14 day intervals between each one) to reach maximum dose, followed by maintenance injections starting with 2 week intervals, followed by 4 week intervals until onset of the grass pollen season.
Biological: Allergovit 6-grasses
Subcutaneous injections
Other Names:
  • Specific immunotherapy with an allergoid preparation.
Placebo Comparator: Placebo
Placebo injections was given the same way: Seven injections (with 7 to 14 day intervals between each one) to reach maximum dose, followed by maintenance injections starting with 2 week intervals, followed by 4 week intervals until onset of the grass pollen season.
Other: Placebo
Subcutaneous injections
Other Names:
  • Comparator

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Symptom and Medication Score
Time Frame: Assessment after the first and second grass pollen season.
The area under the curve (AUC) , derived from an analysis period of 42 days of the daily sum of the symptom and medication score (SMS).
Assessment after the first and second grass pollen season.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Rhinoconjunctivitis Quality-of-Life Questionnaire
Time Frame: First and second grass pollen season
Changes in the scores of Rhinoconjunctivitis Quality-of-Life Questionnaire (RQLQ by E Juniper) at baseline (outside the grass pollen season), every two weeks during the 3 months grass pollen season (year 1+2).
First and second grass pollen season

Collaborators and Investigators

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

Sponsor

Allergopharma GmbH & Co. KG

Investigators

  • Principal Investigator: Annemie Narkus, M.D.

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

Helpful Links

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

November 1, 2001

Primary Completion (Actual)

May 1, 2004

Study Completion (Actual)

August 1, 2010

Study Registration Dates

First Submitted

December 8, 2005

First Submitted That Met QC Criteria

December 8, 2005

First Posted (Estimate)

December 9, 2005

Study Record Updates

Last Update Posted (Estimate)

June 5, 2014

Last Update Submitted That Met QC Criteria

June 4, 2014

Last Verified

June 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Al0101av

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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