Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01449786
Other study ID # TK01/2011
Secondary ID
Status Completed
Phase Phase 2
First received October 5, 2011
Last updated April 12, 2017
Start date March 14, 2012
Est. completion date December 20, 2016

Study information

Verified date April 2017
Source Medical University of Vienna
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

More than 70% of birch pollen allergic patients suffer from allergic reactions to certain foods, e.g. stone fruits, hazelnut and some vegetables. However, specific immunotherapy (SIT) with birch pollen extract is not effective for the treatment of associated food allergy in a substantial number of patients. Based on our previous clinical and immunological investigations of birch pollen related food allergy (BPRFA) the investigators hypothesize that for effective SIT of this abundant food allergy the disease-eliciting food allergens should be employed. To prove this concept, the investigators aim to sublingually administer the major apple allergen, Mal d 1, to birch pollen-allergic patients with concomitant apple allergy and evaluate clinical and immunological effects of this treatment. The investigators choose Mal d 1 as model food allergen because (i) its cross-reactivity with Bet v 1 has been well characterized,(ii) apple is the most frequent trigger for BPRFA and (iii) recombinant(r)Mal d 1 was well tolerated after sublingual administration to 20 birch pollen-allergic patients in a previous study. Sublingual administration of a defined concentration of GMP-rMal d 1 will be compared with equal doses of GMP-rBet v 1 as a positive control and placebo-treatment. Clinical parameters will include skin prick tests (SPT) and objective and subjective assessment of apple and birch pollen-induced allergic symptoms. Immunological parameters will comprise the analysis of antibody and T cell responses to Mal d 1 and Bet v 1 as well as the evaluation of basophil activation.

The proposed pilot study will be a first investigation of the concept to specifically treat BPRFA with the involved food allergens and thus, represents an important step in the development of an efficient and safe therapy in the future.


Recruitment information / eligibility

Status Completed
Enrollment 60
Est. completion date December 20, 2016
Est. primary completion date February 28, 2014
Accepts healthy volunteers No
Gender All
Age group 18 Years to 65 Years
Eligibility Inclusion Criteria:

- otherwise healthy persons between 18 und 50 years of age;

- positive history of rhinoconjunctivitis to birch pollen

- oral allergy syndrome(OAS) to apple

- positive skin prick test (SPT) reaction to birch pollen and apple

- specific IgE for Bet v 1 and Mal d 1

Exclusion Criteria:

- Exclusion criteria

- Persons who due to their physical or mental state are not able to provide informed consent.

- Persons with underlying illnesses such as severe cardiopulmonary, malignant and/or autoimmune diseases

- Persons suffering from Hyper-IgE syndrome

- Persons receiving SIT during the past 5 years

- persons suffering from severe allergic reactions to apple such as generalized urticaria, asthma and/or anaphylaxis

- persons suffering from severe bronchial asthma to birch pollen

- persons suffering from pathological alterations of the lips and oral mucosa

- persons who are prescribed a treatment with immune-suppressive drugs, anti-histamines, leukotriene-antagonists or psychotropic drugs with anti-histaminic effects

- persons using ß-blockers

- Pregnant woman

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
rMal d 1
25 µg daily as sublingually administered drops, 16 weeks
rBet v 1
25 µg daily administered sublingually as drops over 16 weeks
Other:
placebo drops
25 µg of placebo Drops daily administered sublingually over 16 weeks

Locations

Country Name City State
Austria Medical University of Vienna Vienna

Sponsors (2)

Lead Sponsor Collaborator
Medical University of Vienna Austrian Science Fund (FWF)

Country where clinical trial is conducted

Austria, 

Outcome

Type Measure Description Time frame Safety issue
Primary allergen concentration to induce allergic reactions in the oral cavity as a measure of efficacy (oral provocation test) To measure the clinical effects on apple-induced OAS, open food challenges (OFC) with every 30 minutes increasing doses of GMP-rMal d 1 will be performed before and after the treatment period. 1 year
Secondary T cell proliferation and cytokine production as a measure of tolerance induction PBMC isolated from heparinised blood before, during and after sublingual administration of the treatment will be stimulated with titrated concentrations of rMal d 1 and rBet v 1, respectively. Proliferative and cytokine responses will be determined. 1 year
Secondary allergen specific antibody response measurement of IgE, IgG and IgA antibodies specific for Bet v 1 and Mal d 1 1
See also
  Status Clinical Trial Phase
Completed NCT06037148 - Study to Evaluate Safety, Tolerability and Explorative Efficacy of DM-101PX in Birch Pollen Allergic Participants Phase 1
Completed NCT04912076 - S.C. Immunotherapy With BM41 in Patients With Allergic Rhino-conjunctivitis Caused by Birch Pollen Phase 1
Recruiting NCT05346718 - Threshold Concentrations for Ragweed and Birch Pollen in Seasonal Allergic Rhinitis N/A
Completed NCT01137357 - Probiotics for Reduction Of Markers In Subjects With Allergy N/A
Active, not recruiting NCT05668390 - Safety and Efficacy of STALORAL® Birch 300 IR in a Paediatric Population With Birch Pollen-induced ARC w/o Asthma Phase 3
Not yet recruiting NCT02146300 - Effect of the Nasal Provocation on the Breathing Style N/A
Completed NCT03969849 - Study to Assess the Safety, Tolerability, Pharmacokinetic, and Pharmacodynamic Effects of a Single Dose of REGN5713-5714-5715 in Healthy Adult Participants Phase 1
Completed NCT04435678 - Diagnostic Accuracy of the MADx Multi Array Xplorer (MAX 45k) Automated Laboratory System and the MADx Allergy Explorer Version 2 (ALEX²) - IgE Multiplex Test for the Diagnosis of Pre-defined Groups of Specific High-priority Allergens N/A
Completed NCT01628484 - Physiological Study to Determine the Allergic Skin Activity After Different Skin Preparation Phase 1
Completed NCT00932607 - SUBLIVAC® Birch PROBE Study Phase 2
Completed NCT00266526 - Specific Immunotherapy With Recombinant Birch Pollen Allergen rBet v1-FV Phase 2
Completed NCT02143583 - Follow-up of Study AN004T to Assess the Persistence of AllerT Efficacy During the 2nd to 4th Season After Treatment Phase 2
Completed NCT02074930 - Comparison of the Influence of Different Skin Conditions on the Allergic Skin Reactivity to Epicutanous Allergen Exposure N/A
Completed NCT04266028 - Study to Evaluate Safety and Tolerability of sc Immunotherapy With DM-101 in Adults With Birch Pollen Allergy Phase 1
Completed NCT00309062 - Safety and Efficacy of Recombinant Birch Pollen Allergen in the Treatment of Allergic Rhinoconjunctivitis Phase 3
Completed NCT01675791 - A Dose-response Evaluation of ALK (the Sponsor) Tree Allergy Immunotherapy Tablet Phase 2