- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01431859
Can we Help People With the Oral Allergy Syndrome Eat Fresh Fruit?
April 5, 2016 updated by: Nicola Gray, Royal Sussex County Hospital
A Double Blind Placebo Controlled Randomised Trial to Study the Effects of Birch Pollen Specific Immunotherapy (BP-SIT) on the Symptoms of the Oral Allergy Syndrome in Adult Patients
Birch pollen allergy is increasingly common.
It causes asthma and early season hay fever.
This is because the body recognises birch pollen and reacts to it, leading to symptoms.
Many patients with birch allergy get an itchy and/or swollen mouth when they eat fresh fruit (apples, pears, peaches, plums etc).
Some fruit proteins have a similar structure to birch pollen; because of this the body recognises these proteins too causing the immune system to respond.
This response causes symptoms of itch and swelling inside the mouth and throat.
the investigators want to find out whether it is possible to get rid of the fruit-induced symptoms by using a desensitisation procedure that has been developed for treating the kind of hay fever that is caused by birch pollen.
Desensitisation involves giving a small injection of pollen just under the skin and gradually increasing the amount each week.
This allows the body to build up a "tolerance" to the injected protein.
When the pollen is then encountered in real life the immune system reacts less vigorously so symptoms are less severe.
This treatment does reduce hay fever symptoms.
Our study aims to find out if this tolerance is transferred to the fruit proteins enabling patients to eat apples with minimal symptoms.
Patients will be given apple to eat in a hidden form before treatment and their response assessed.
They will then receive either active or dummy pollen injections before birch pollen season.
A few months after completing these injections they will have another disguised apple test to see whether their symptoms are any better.
If symptoms have improved with treatment then this therapy could be offered to patients in the future.
This would allow them to eat fresh fruit without worrying about unpleasant symptoms and improve their hay fever symptoms.
Study Overview
Status
Unknown
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Anticipated)
40
Phase
- Phase 4
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
-
-
East Sussex
-
Brighton, East Sussex, United Kingdom, BN2 5BE
- Royal Sussex County Hospital
-
-
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 and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Male or female; age 18 with no upper age limit
- History of typical fruit-related symptoms on eating apples plus or minus other plant-derived foods known to be involved in the pollen-food syndrome
- History of spring rhinitis hay fever
- Positive skin prick test to birch pollen
- Positive open food challenge to apple
Exclusion Criteria:
- Significant medical conditions that may affect the risks of giving BP-SIT (especially uncontrolled asthma or ongoing need for beta-blockers)
- History of moderate to severe systemic reaction to apple, defined as any of: generalised urticaria, generalised angioedema, history convincing for laryngeal oedema, collapse
- Current immunological disease (auto-immune or thyroid disease, immunodeficiency)
- Malignant disease within the past five years (Patients with previous malignant disease that is considered cured, may be included subject to the consent of their oncologist)
- Inability to attend regularly for injections and follow-up visits
- Severe atopic dermatitis
- Previous immunotherapy with birch pollen extract
- Pregnant or not using adequate contraception (post-menopausal, surgically sterilised, long-term abstinent, or barrier methods plus spermicide)
- Breast-feeding
- Evidence of current drug or alcohol misuse
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: Prevention
- Allocation: Randomized
- Interventional Model: Single Group Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Subcutaneous injection of placebo
|
Placebo injection to be given subcutaneously once weekly for 7 weeks prior to birch pollen season for 2 consecutive years.
|
Active Comparator: Birch pollen immunotherapy
|
Birch pollen specific immunotherapy.
Once weekly injection for 7 weeks prior to birch pollen season for 2 consecutive seasons
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in threshold for eating uncooked apple from baseline, compared to 1 year and 2 years following the intervention.
Time Frame: baseline, 1 year and 2 years
|
Baseline measurements will be taken in Winter 2012 assessing the tolerance to fresh apple in a double blind placebo controlled manner. The intervention will start in January 2013. Outcomes will be assessed using the double blind placebo controlled food challenge technique in Winter 2013 and 2014. (1 and 2 years after baseline assessment) |
baseline, 1 year and 2 years
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in symptoms of rhinoconjunctivitis immediately after the first season of immunotherpay compared to 2 seasons of immunotherapy treatment.
Time Frame: baseline, 1 year and 2 years
|
Diary cards will be given to patients to complete in the first season following immunotherapy, to assess hay fever symptoms.
|
baseline, 1 year and 2 years
|
Change in conjunctival provocation tests from baseline.
Time Frame: baseline, 1 year and 2 years
|
Conjunctival provocation testing will take place at baseline in Winter 2012 using standard birch pollen exracts.
Repeat tests will occur Winter 2013 and 2014 to assess changes following the intervention.
|
baseline, 1 year and 2 years
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Anthony Frew, MBBS MD FRCP, Brighton and Sussex University Hospital Trust
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
July 1, 2012
Primary Completion (Anticipated)
November 1, 2016
Study Completion (Anticipated)
November 1, 2016
Study Registration Dates
First Submitted
September 5, 2011
First Submitted That Met QC Criteria
September 9, 2011
First Posted (Estimate)
September 12, 2011
Study Record Updates
Last Update Posted (Estimate)
April 6, 2016
Last Update Submitted That Met QC Criteria
April 5, 2016
Last Verified
April 1, 2016
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 10/143/FREW
- 2011-004078-26 (EudraCT Number)
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.
Clinical Trials on Oral Allergy Syndrome
-
Assaf-Harofeh Medical CenterUnknown
-
Catholic University of the Sacred HeartCompletedQuality of Life | Systemic Nickel Allergy SyndromeItaly
-
The Canadian College of Naturopathic MedicineCompleted
-
University of RochesterNational Institute of Allergy and Infectious Diseases (NIAID)Not yet recruitingEgg Allergy | Food Allergy Peanut | Food Allergy in Infants | Allergy and Immunology | Peanut and Nut AllergyUnited States
-
Hong Kong Sanatorium & HospitalChinese University of Hong KongTerminatedAllergy to Fish | Allergy to Shrimp | Allergy to CrabHong Kong
-
Abionic SAJohns Hopkins University; NAMSAWithdrawnAllergy | Allergic Asthma | Allergy to Cats | Allergy to House Dust | Allergy Cockroach | Allergy to Dog Dander (Finding) | Allergy MoldUnited States
-
King's College LondonGuy's and St Thomas' NHS Foundation TrustUnknownEgg Allergy | Food Allergy | Food Allergy in Children | Milk Allergy | Food Allergy in Infants | Nut Allergy | Food Allergen SensitisationUnited Kingdom
-
Peking University Third HospitalCancer Institute and Hospital, Chinese Academy of Medical Sciences; Beijing... and other collaboratorsRecruitingCow Milk Allergy | Food Allergy in ChildrenChina
-
King's College LondonKing's College Hospital NHS Trust; University College London Hospitals; Cambridge... and other collaboratorsRecruitingEgg Allergy | Food Allergy | Food Allergy in Children | Milk Allergy | Food Allergy in Infants | Nut Allergy | Food Allergen SensitisationUnited Kingdom
-
Chinese University of Hong KongRecruiting
Clinical Trials on Placebo
-
SamA Pharmaceutical Co., LtdUnknownAcute Bronchitis | Acute Upper Respiratory Tract InfectionKorea, Republic of
-
National Institute on Drug Abuse (NIDA)CompletedCannabis UseUnited States
-
AstraZenecaParexel; Spandauer Damm 130; 14050; Berlin, GermanyCompletedMale Subjects With Type II Diabetes (T2DM)Germany
-
Heptares Therapeutics LimitedCompletedPharmacokinetics | Safety IssuesUnited Kingdom
-
GlaxoSmithKlineCompletedPulmonary Disease, Chronic ObstructiveUnited Kingdom, Netherlands
-
Shijiazhuang Yiling Pharmaceutical Co. LtdXuanwu Hospital, BeijingCompleted
-
GlaxoSmithKlineCompletedInfections, BacterialUnited States
-
ItalfarmacoCompletedBecker Muscular DystrophyNetherlands, Italy
-
West Penn Allegheny Health SystemCompletedAsthma | Allergic RhinitisUnited States