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Assessment of Residual Allergenicity of Tree (Birch, Hazel, and Alder) Pollen Allergoid Using Skin Prick Testing

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00107705
Recruitment Status : Completed
First Posted : April 8, 2005
Last Update Posted : June 17, 2010
Information provided by:
Allergy Therapeutics

Brief Summary:
The purpose of this study is to evaluate the residual allergenicity of Tree MATA (modified pollen allergen tyrosine adsorbate) by skin prick testing. This is done by a comparison of the wheal response after skin prick testing with aqueous native and modified allergen, modified tyrosine adsorbed allergen and Tree MATA MPL (modified tyrosine adsorbed + MPL [Monophosphoryl Lipid A]).

Condition or disease Intervention/treatment Phase
Type I Hypersensitivity Biological: Tree MATA MPL Phase 1

Detailed Description:

Tree MATA MPL has been developed to provide pre-seasonal specific immunotherapy for patients with proven type I hypersensitivity to cross reacting tree pollens. MPL (Monophosphoryl Lipid A), a purified, detoxified glycolipid derived from the cell wall of Salmonella minnesota, is included in the product formulation as an adjuvant to increase the immunogenic effect of the product and to enhance the switch from an allergen-specific TH2 to a TH1-like profile.

The tree pollen extract is modified with glutaraldehyde to produce the active ingredient, an allergoid. This modification reduces the reactivity of the extract with IgE antibody, thus reducing the risk of side effects. However, a simultaneous reduction in other important immunological properties, such as IgG and T cell reactivities is not seen.

The purpose of this study is to assess residual allergenicity of the modified tree pollen in Tree MATA MPL using skin prick testing.

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Study Type : Interventional  (Clinical Trial)
Enrollment : 12 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Single
Primary Purpose: Treatment
Official Title: A Single-blind Phase I Study to Assess the Residual Allergenicity of Tree (Birch, Hazel and Alder) Pollen Allergoid Using Skin Prick Testing
Study Start Date : April 2005
Study Completion Date : May 2005

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Allergy

Primary Outcome Measures :
  1. to assess the allergenicity of the modified tree (birch, alder, hazel) pollen allergoid using skin prick testing

Secondary Outcome Measures :
  1. evaluation for potential late phase reactions; adverse events; clinical labs; vital signs

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • The subject must sign the study consent form prior to any screening procedures being performed.
  • If the volunteer is female of childbearing potential, she must demonstrate a negative urine pregnancy test and agree to remain abstinent or use an effective method of birth control or use a hormonal contraceptive
  • The subject must demonstrate a positive skin prick test to Birch, Hazel and Alder pollen allergen extract
  • The subject must demonstrate a positive skin prick test to positive histamine control
  • The subject must demonstrate a negative skin prick test to negative control
  • The subject must demonstrate a specific IgE for Birch, Hazel and Alder as documented by a RAST (radioallergosorbent test), or equivalent test
  • The subject must have clinically acceptable results from the screening procedure.

Exclusion Criteria:

  • History or presence of acute or subacute atopic dermatitis, chronic dermatitis, urticaria factitia, or urticaria due to physical/chemical influence or any other skin conditions which might interfere with the interpretation of skin prick test results
  • Visual inspection of the forearms indicates potential problems with the conduct or interpretation of the skin prick tests; both forearms must be available for testing
  • Subject has asthma or other lower respiratory tract condition
  • History or presence of diabetes, cancer or any clinically significant cardiac, metabolic, renal, hepatic, gastrointestinal, dermatologic, venereal, hematologic, neurologic or psychiatric diseases or disorders
  • Any clinically significant abnormal laboratory value at Visit 1
  • Clinically relevant sensitivity to any common perennial allergen: house dust mites, molds, epithelia (cat, dog, and horse), grass mix
  • Clinically relevant symptoms due to an IgE - mediated allergy at screening and before inclusion to the treatment period.
  • Secondary alteration at the affected organ.
  • History of auto-immune diseases or rheumatoid diseases
  • Subject has a medical condition that prohibits the use of adrenalin
  • Subject has disorder of tyrosine metabolism
  • Subject with diseases interfering with the immune response and have received medication, which could influence the results of this study
  • Subject has acute or chronic infection
  • History of anaphylaxis
  • History of angioedema
  • Subjects determined by the Investigator to have any medical condition that could jeopardize their health or prejudice the results
  • History of hypersensitivity to the excipients of the study medication
  • History of immunotherapy with tree allergen extracts
  • Current therapy with ß-blockers
  • Currently receiving anti-allergy medication or other drugs with antihistaminic activity
  • Subject has a positive drugs of abuse screen at Visit 1
  • Subject participated in a clinical trial with an investigational drug within the last 30 days
  • Subject cannot communicate reliably with the Investigator or is deemed uncooperative or noncompliant
  • Females who are pregnant, breastfeeding, or refuse to use a reliable method of birth control
  • Subject received treatment with a preparation containing MPL during the past 12 months
  • Use of prohibited medications or inadequate washout periods prior to screening

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00107705

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Canada, Ontario
Allied Research International Inc.
Mississauga, Ontario, Canada, L4W 1N2
Sponsors and Collaborators
Allergy Therapeutics
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Study Chair: Karl Jürgen Fischer von Weikersthal-Drachenberg, MD Allergy Therapeutics

Layout table for additonal information Identifier: NCT00107705     History of Changes
Other Study ID Numbers: TreeMATAMPL101
First Posted: April 8, 2005    Key Record Dates
Last Update Posted: June 17, 2010
Last Verified: June 2010
Keywords provided by Allergy Therapeutics:
skin prick test
specific immunotherapy
Additional relevant MeSH terms:
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Hypersensitivity, Immediate
Immune System Diseases