NCT00104377

Induction of Immunogenicity With Different Doses of Grass MATA in Subjects Allergic to Grass and Rye Pollen

A Multicenter, Single-Blind, Placebo-Controlled, Phase 2 Study to Evaluate the Induction of Immunogenicity With Different Doses of Grass MATA in Subjects Allergic to Grass and Rye Pollen

• Status: Completed
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 70 (planned)
• Sponsor: Allergy Therapeutics · Industry
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Not accepted

Summary

Grass MATA (modified pollen allergen tyrosine adsorbate) has been developed to provide pre-seasonal specific immunotherapy for patients with hypersensitivity to grass and rye pollen. Different doses of Grass MATA will be administered and immunological changes following this treatment will be assessed.

Detailed description

Grass MATA MPL has been developed to provide pre-seasonal specific immunotherapy for patients with proven type I hypersensitivity to cross reacting grass pollens. The grass 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. 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 T cell profile. The purpose of this study is to assess specific immunological changes (IgG, IgG1, IgG4 and IgE) in allergic subjects following 2 subcutaneous injections of different doses of study medication (Grass MATA or placebo) administered 3 weeks apart. The immunological changes will be used to assess the performance of the R7 IgG reactivity assay over a range of clinically efficacious doses.

Conditions

• Type I Hypersensitivity

Interventions

Type	Name	Description
BIOLOGICAL	Grass MATA MPL

Timeline

• Start date: 2005-03-01
• Completion: 2005-11-01
• First posted: 2005-03-01
• Last updated: 2010-06-17

Locations

11 sites across 1 country: United States