Active not recruitingOBSERVATIONAL

The Role of Filaggrin Mutations and Sensitization Pathways in Allergic Rhinitis and Peanut Allergy

This study aims to understand the link between changes in a specific gene, called filaggrin, and common allergies like allergic rhinitis (hay fever, especially to birch pollen) and peanut allergy. Researchers want to see if these gene changes make people more likely to develop these allergies or how severe they might be. Participants, aged 18 and over, will have skin tests to confirm allergies and provide blood samples to check for genetic differences. They will also have special patch tests to see how their skin reacts to allergy triggers. The information gathered will help scientists learn more about how these allergies develop, which could lead to better ways to diagnose and treat them in the future.

At a glance

Status

Active not recruiting

Sponsor

Dr. Anne Ellis

Enrolment target

100

Start

01 Mar 2016

Estimated completion

01 Dec 2028

Allergic Rhinitis Peanut Allergies

What is this study about?

This study is trying to understand more about allergic rhinitis (often called hay fever, especially when it's caused by birch pollen) and peanut allergy. These are common conditions, and doctors are always looking for ways to understand them better. Researchers are particularly interested in a gene called filaggrin. This gene plays a role in keeping your skin healthy and protected. Sometimes, there are small changes or 'mutations' in this gene.

The main idea behind this research is to see if these changes in the filaggrin gene are connected to whether someone develops birch pollen hay fever or a peanut allergy. They also want to see if these gene changes affect how sensitive someone is to these allergens. By looking at people with and without these allergies, and by examining their genes and how their skin reacts, scientists hope to piece together more about why some people get allergies and others don't.

Ultimately, understanding these connections could be really important. It might help doctors identify people at higher risk of developing these allergies in the future, or it could lead to new ideas for treatments that target the root cause of the allergy, rather than just managing the symptoms. It's all about gathering more information to improve our understanding of these common conditions.

Key takeaways

This study explores links between a gene and allergies.
It focuses on birch pollen hay fever and peanut allergy.
Adults aged 18+ with or without these allergies can join.
Participation involves skin tests, patch tests, and a blood sample.
It aims to improve understanding and future treatments for allergies.

Who may be eligible?

This study is looking for adults aged 18 or older. You could be considered if you are of white European background and have a known allergy to birch pollen (which causes hay fever) or a known peanut allergy. Your allergy status would need to be confirmed by specific tests.

They are also looking for people who don't have allergies. These 'non-allergic control' participants should not have any history of allergies like eczema, asthma, or food allergies, and tests would confirm they are not allergic to common triggers.

You would not be able to join if you can't complete the study procedures, or if you are taking certain medications that could affect the test results. For example, some anti-allergy medicines (antihistamines) might need to be stopped for a short time before skin tests. The study team would discuss all of this with you.

Could this study suit you?

Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.

Are you 18 years old or older?
Are you of white European background?
Do you have a known birch pollen allergy (hay fever)?
Do you have a known peanut allergy?
Do you have no allergies and generally good health?
Can you attend appointments for tests like blood draws and skin checks?

Answer every question to see your result.

What does participation involve?

If you decide to take part in this study, you'll have a few appointments. First, the team will ask you about your medical history, especially any allergies you've had. They'll also note down any medicines you're currently taking. You will then have some skin prick tests to common environmental allergens, including birch pollen and peanut, to confirm your allergy status. This involves tiny pricks on your arm with a small amount of liquid to see if a small red bump appears.

You will also have special 'patch tests' where small patches containing very diluted peanut or birch allergy triggers are applied to your skin to see how it reacts over time. Finally, a small blood sample will be taken, similar to a routine blood test. This sample will be used to look at your genes, specifically for changes in the filaggrin gene. The study team will make sure you understand each step before you agree to anything. The total time for participation would involve these visits and tests, but there isn't a long follow-up period specified.

Potential risks and benefits

Taking part in this study may offer some benefits, such as gaining a clearer understanding of your own allergy status through new tests. Your contribution will also help scientists learn more about allergies, which could lead to better treatments for everyone in the future. The risks involved are generally low, including mild discomfort or itching from skin tests and a small bruise from a blood draw. The study team will take every precaution to ensure your safety and comfort. Remember, you can choose to leave the study at any time, for any reason, without it affecting your medical care.

Locations (1)

Kingston General Hospital
Verified postcode
Kingston, Canada

Common questions

What is allergic rhinitis?

Allergic rhinitis is another name for hay fever. It's when your nose gets itchy, runny, or blocked because of an allergic reaction to things like pollen or dust mites.

What is a 'filaggrin mutation'?

Filaggrin is a protein in your skin. A 'mutation' means there's a small change in the gene that makes this protein. Sometimes these changes can affect your skin's protective barrier.

Will I find out my genetic information?

The study focuses on group data to understand general links between genes and allergies. Individual genetic results are usually not shared with participants in research studies.

What are skin prick tests?

Skin prick tests are a common way to find out what you're allergic to. A tiny drop of allergen is placed on your skin, which is then gently pricked. If you're allergic, a small red, itchy bump will appear quickly.

Will I get paid for taking part?

The information provided doesn't mention payment for participation, but you should ask the research team if compensation for time or travel is available.