Analysis of Immunological Reactions to Foods in Birch Pollen-Allergic Patients
Recruitment status was Not yet recruiting
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| First Received Date ICMJE | October 23, 2008 | ||||||||
| Last Updated Date | November 6, 2008 | ||||||||
| Start Date ICMJE | December 2008 | ||||||||
| Estimated Primary Completion Date | January 2010 (final data collection date for primary outcome measure) | ||||||||
| Current Primary Outcome Measures ICMJE | Not Provided | ||||||||
| Original Primary Outcome Measures ICMJE | Not Provided | ||||||||
| Change History | Complete list of historical versions of study NCT00787631 on ClinicalTrials.gov Archive Site | ||||||||
| Current Secondary Outcome Measures ICMJE | Not Provided | ||||||||
| Original Secondary Outcome Measures ICMJE | Not Provided | ||||||||
| Current Other Outcome Measures ICMJE | Not Provided | ||||||||
| Original Other Outcome Measures ICMJE | Not Provided | ||||||||
| Descriptive Information | |||||||||
| Brief Title ICMJE | Analysis of Immunological Reactions to Foods in Birch Pollen-Allergic Patients | ||||||||
| Official Title ICMJE | Analysis of Immunological Reactions to Pollen-Related Foods in Birch Pollen-Allergic Patients | ||||||||
| Brief Summary | A high number of birch pollen-allergic individuals develop hypersensitivity reactions to certain foods, e.g. apples. This food allergy is due to immunological cross-reactivity. Birch pollen-related foods contain proteins, e.g. Mal d 1 in apple, that are structurally related with the major birch pollen allergen, Bet v 1. Hence IgE antibodies and T lymphocytes specific for Bet v 1 recognize these food proteins which results in activation of the immune system and, consequently, in clinical symptoms. In the present study the investigators intend to investigate if and how the consumption of birch pollen-related food allergens affects birch pollen allergy. In other words, the investigators are interested to analyse whether Bet v 1-related food allergens activate Bet v 1-specific memory cells and thus, contribute to the maintenance of the pollen allergy outside the pollen season. Data obtained in this study will help to clarify the immunological and clinical role of cross-reactivity between pollen and food allergies and will reveal whether avoidance of such foods should be recommended for the patients. Finally, novel approaches for diagnosis and therapy of pollen-related food allergens can be developed. |
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| Detailed Description | Not Provided | ||||||||
| Study Type ICMJE | Observational | ||||||||
| Study Design ICMJE | Observational Model: Case-Only Time Perspective: Prospective |
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| Target Follow-Up Duration | Not Provided | ||||||||
| Biospecimen | Not Provided | ||||||||
| Sampling Method | Non-Probability Sample | ||||||||
| Study Population | otherwise healthy birch pollen allergic (rhinoconjunctivitis)persons suffering also from oral allergy syndrome to apple. |
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| Condition ICMJE |
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| Intervention ICMJE | Not Provided | ||||||||
| Study Group/Cohort (s) | Not Provided | ||||||||
| Publications * | Not Provided | ||||||||
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* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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| Recruitment Information | |||||||||
| Recruitment Status ICMJE | Not yet recruiting | ||||||||
| Estimated Enrollment ICMJE | 30 | ||||||||
| Estimated Completion Date | December 2010 | ||||||||
| Estimated Primary Completion Date | January 2010 (final data collection date for primary outcome measure) | ||||||||
| Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
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| Gender | Both | ||||||||
| Ages | 18 Years to 50 Years | ||||||||
| Accepts Healthy Volunteers | No | ||||||||
| Contacts ICMJE |
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| Location Countries ICMJE | Not Provided | ||||||||
| Administrative Information | |||||||||
| NCT Number ICMJE | NCT00787631 | ||||||||
| Other Study ID Numbers ICMJE | TK01/2008 | ||||||||
| Has Data Monitoring Committee | No | ||||||||
| Responsible Party | Tamar Kinaciyan, MD, Ass. Prof., DIAID, Dep. of Dermatology, MUV | ||||||||
| Study Sponsor ICMJE | Medical University of Vienna | ||||||||
| Collaborators ICMJE | Not Provided | ||||||||
| Investigators ICMJE |
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| Information Provided By | Medical University of Vienna | ||||||||
| Verification Date | October 2008 | ||||||||
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ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |
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