Biomarker Screening for Immunotherapy Response Evaluation Using Microneedle Patch in Patients with Allergic Rhinitis

Allergic rhinitis is a disease in which the nasal mucous membrane overreacts to allergens, resulting in symptoms such as spasmodic and repetitive sneezing, rhinorrhea, and stuffy nose, and can be treated with immunotherapy for radical treatment. Immunotherapy treatments include subcutaneous injections, sublingual tablets, and sublingual fluids, and subcutaneous injections have the risk of anaphylaxis, the hassle of daily administration at home, and local allergic reactions. Transdermal absorption immunotherapy (DF19001) that can compensate for the shortcomings of these existing immunotherapy drugs is currently under clinical research in Korea (Severance Hospital IRB No. 4-2021-1345).

Immunotherapy requires periodic monitoring, such as analyzing immunological changes through sample collection and determining the dose and cycle of administration, because the treatment period is long and individual immune responses are different. Existing methods for confirming immune responses in samples used invasive skin biopsy and blood collection methods, but in-blood evaluation indicators have the disadvantage of being ineffective as initial efficacy evaluations or predictive evaluations before treatment. In addition, skin biopsy should be performed by a specialist, and there is a disadvantage that resistance occurs because the patient's pain is accompanied, and scars or bruises may remain. Therefore, since it is a biopsy through minimal invasion compared to a tissue biopsy, the investigators would like to use a method of collecting skin samples through a microstructure (micro needle patch), a method that has little pain and no scars. Through this study, RNA is obtained from patients with house dust mite allergic rhinitis through minimally invasive skin samples, and immunotherapy response evaluation biomarkers are screened according to immunotherapy implementation, and its use as an indicator of immunotherapy prognosis in allergic diseases.

Allergic rhinitis is a disease in which the nasal mucosa overreacts to allergens, resulting in symptoms such as seizure and repetitive sneezing, runny nose, and stuffy nose. Typical treatments include avoiding causative substances and anti-allergic medication. Immunotherapy may not be sufficient for treatment satisfaction with existing treatments, it is practically impossible to avoid allergens, or allergen specific immunotherapy may be performed for more root treatment.

Immunotherapy is known as the only way to change the natural course of allergic diseases by increasing the amount of substances that cause allergic reactions to allergic patients from a small amount and reducing allergic reactions through repeated administration for three to five years. Immunotherapy treatments include hypodermic injections, hypodermic tablets, and hypodermic fluids, and each has its pros and cons. Subcutaneous injection immunotherapy requires regular visits to a medical institution for injection, and there is a risk of anaphylaxis. Although sublingual immunotherapy has a low risk of anaphylaxis, it is cumbersome to administer it daily at home, and the incidence of local allergic reactions in the oral cavity is high due to 30 to 70 times less absorption in the body than injection treatments. Transdermal absorption immunotherapy (DF19001) that can compensate for the shortcomings of these existing immunotherapy drugs is currently under clinical research in Korea (Serbans Hospital IRB No. 4-2021-1345).

These immunotherapy require periodic monitoring, such as analyzing immunological changes through sample collection and determining administration dose and cycle, because the treatment period is long at 3-5 years and individual immune responses are different. Most of the existing methods for confirming immune responses in samples used invasive skin biopsy or blood collection methods, but allergen specific IgE (allergen specific IgG4, blocking factors) have the disadvantage of being ineffective as an initial efficacy evaluation or a pre-treatment prediction evaluation of a subject. In addition, various analysis methods can be used through skin biopsy to see changes in the initial immune response of the inoculation site, but this must be performed by a specialist, and has the disadvantage of being resistant to patient pain and scarring or bruising.

Therefore, in order to overcome these difficulties through this clinical study, the investigators would like to use a method of collecting skin samples through a microstructure (micro needle patch). When the microstructure patch is applied to the skin surface for 5 minutes, it passes through the microstructure's fine needle (\<0.5 mm long) keratin layer and enters the inside of the skin as shown in the image below. Various immunological indicators are analyzed by collecting skin factors remaining in the patch by applying the patch for a sufficient time for various factors in the epidermis and dermis layer to be adsorbed through the microstructure that has entered the skin.

Since this method is a biopsy through minimal invasion compared to conventional tissue biopsy, there is little pain and no scarring, and previous studies have confirmed that a small amount of RNA can be separated from skin samples using microstructure patches and microarray can be performed. In addition, in the same way, the detection of protein biomarkers according to the test collection method for determining treatment in patients with atopic dermatitis was observed.

Therefore, this study aims to obtain RNA from patients with house dust mite allergic rhinitis through minimally invasive skin samples, screen the biomarker for immunotherapy response evaluation through immunotherapy and confirm its use as an indicator of immunotherapy prognosis in allergic diseases.

Eligibility Criteria:
Inclusion Criteria:

* A. patient group of House dust mite

  1. Adult male and female patients aged 19 to 60 with allergic rhinitis caused by the antigen of the American house dust mite (It is judged that the positive for the house dust mite is MAST ≥ Class 3 or ImmunoCAP® ≥3.5 kUA/L)
  2. Moderate-severe persistent rhinitis when evaluated according to ARIA (Allergic rhinitis and its impact on asthma)
  3. A person who has signed a written consent to participate in this clinical trial at his/her own discretion after fully explaining the purpose, contents, characteristics of the test drug, and expected adverse reactions prior to participation in the clinical trial B. Control group (Normal person)

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  1. Adults 19 years of age or older who are judged to be free from skin diseases or allergic diseases through medical examination and visual observation by a specialist
  2. A person who agrees to provide samples derived from the human body
  3. A person who voluntarily agreed to this study and prepared a consent form after approval of the IRB

Exclusion Criteria:

* A. patient group of House dust mite

  1. Patients who are taking drugs that may affect efficacy evaluation (but can participate if there is no change in the drug taken during the study period)
  2. Within six months of participation in the study, other clinical trial drugs or biological equivalence test drugs, biological agents (e.g. Anti-IgE) were administered
  3. If there is a skin disease or tattoo in the area where the medication is applied
  4. Immunosuppressive therapy or systemic steroid therapy for acute and chronic inflammatory skin diseases
  5. A person in charge of testing or a person in charge of testing deemed inappropriate to participate in the test due to other reasons B. Control (Normal person)

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  1. Patients with allergic diseases such as atopic dermatitis or allergic asthma and rhinitis
  2. A person who voluntarily disagrees with this study after approval of the IRB and has not completed the consent form