300,000+ clinical trials. Find the right one.

27 active trials for Allergic Rhinitis

Immune Response Features in Allergic Airway Diseases

This study aims to investigate immune mechanisms and phenotypes and endotypes of allergic airway diseases - allergic rhinitis and allergic asthma. Pathogenesis of these diseases are not fully investigated yet. Patients with the same disease have different dominant symptoms, course of the disease and response to treatment. Moreover, there is a hypothesis about united airway disease suggesting that allergic rhinitis and allergic asthma is different manifestation of the same disease. This led to assumption of phenotypes and endotypes. This classification which still is not unified can let to prescribe personalized treatment for every patient.

Start: May 2019

"Efficacy and Safety of Phlai Capsule Compared to Placebo as the Treatment in Allergic Rhinitis Patients"

Background: Zingiber cassumunar Roxb., frequently known as Phlai in Thai, has been safely used as an antihistaminic and anti-inflammatory drug in Thai traditional medicine. Individual with allergic rhinitis may have positive response to Phlai. Objective: Investigators assessed the efficacy and safety of Phlai as a treatment for allergic rhinitis Design: The study was a 1-month, double-blind, randomized, parallel-group, intent-to-treat, multicenter, controlled trial in 267 patients at 7 hospitals in Thailand. Skin prick test-positive adults with allergic rhinitis ages 18 to 50 who were randomized into 3 groups (Phlai 8mg/d, Phlai 4mg/d, placebo). Main outcome measures: Primary outcome was defined: improvement of total 5 symptoms scores (nasal obstruction, rhinorrhea, sneezing, itchy nose, itchy eyes) over a 4-week interval among Phlai 8mg/d, Phlai 4mg/d and placebo. Secondary endpoints were: assessments of rhinoconjunctivitis quality of life questionnaire, peak inspiratory nasal flow, nasal examination, adverse events, AST, ALT, Creatinine and BUN over a period of 4 weeks.

Start: January 2020

The Epidemiology, Management, and the Associated Burden of Mental Health, Atopic and Autoimmune Conditions in Alopecia Areata

This study series consists of three related studies and aims to explore and describe many important elements of Alopecia areata over three key areas: (i) the current epidemiology of Alopecia areata, (ii) the prevalence and incidence of psychiatric co-morbidities in people with Alopecia areata and (iii) the prevalence and incidence of autoimmune and atopic conditions in people with Alopecia areata.

Start: March 2020

Assessment of Suppression of Cutaneous Allergic Responses and Pruritis by Topical Minocycline

Adults with known respiratory allergy/asthma with known skin test sensitization will undergo repeat skin prick testing at 4 areas of both arms (bilateral forearms, bilateral upper arms). Each site will be challenged with up to three known allergens, saline and histamine controls. Mean wheal diameter after 20 minutes challenge will be determined. This is followed by placement of minocycline cream (0%, 1%, 2%, 3%), placed in randomized fashion at each of 1 of 4 skin test sites. Measurement of subsequent wheal diameter will be done at 30 minutes, 60 minutes and 24 hours.

Start: September 2019

Comparison of Innate Immune Responses Induced by Allergy Immunotherapy (AIT) With Different Adjuvants

The primary objective of the pilot study is to compare inflammatory responses in blood sera from patients receiving first allergen immunotherapy (AIT) with aluminium (Alum), microcrystalline tyrosine (MCT), or a combination of MCT and monophosphoryl lipid A (MPLA) as adjuvants. The AIT products are containing allergen extracts of grass and tree pollen). Blood is collected before as wells as one day, seven days, and 6-7 weeks after first AIT, and the blood is analysed for content of inflammatory proteins and antibodies.

Start: October 2019

Standardising Nasal Allergen Challenge in Adult With Hay Fever

Hay fever affects 1 in 4 of the UK population and has significant effects on the quality of life of sufferers. Allergy to grass pollen is the most common cause. A detailed understanding of the mechanisms involved during allergic reactions to pollens in hay fever sufferers may provide improvements in diagnosis, drug treatment and assessment of their response to treatment. Controlled exposures to allergens such as grass pollen can provide important information on the mechanisms of allergic inflammation and may be used to assess the success of anti-allergy treatments. Nasal allergen challenge (NAC) is a useful tool in the investigation of allergic rhinitis, including grass pollen-induced seasonal allergic rhinitis (hay fever). NAC is performed by installation of a very small amount of grass pollen extract into the nose in order to reproduce mild and short-lived symptoms such as nasal itch, sneezing, runny nose and nasal congestion that you experience in a more severe form during natural exposure to grass pollen during the summer. Nasal allergen challenge has allowed us to explore the mechanism of hay fever and to provide a rapid and reliable method for investigating new potential treatments for hay fever. Nasal allergen Challenge is a very well-standardised and safe procedure that has been performed within the department of Allergy and Clinical Immunology at Imperial College and Royal Brompton Hospital for many years. Unfortunately the grass pollen extract ('Aquagen') that we have routinely used for nasal challenge has been discontinued and is therefore no longer available. The present study involves testing an alternative source of the grass pollen extract in the form of 'Grazax' which is a freeze-dried tablet that is highly standardised and should enable us to give an identical amount of grass pollen extract for the purpose of nasal challenge. We plan a 'head-to-head' comparison of the two extracts in nasal challenge in order to confirm that the two sources of allergen are equivalent thereby enabling us to use Grazax as the source of grass pollen extract for our nasal challenge studies in the future.

Start: September 2019

Biodiversity Intervention and Atopic Sensitization

Children will receive biodiversity intervention or placebo. The proof of concept trial is double blind. Intervention will start at the age of 2 months and last 10 months. Children will be randomized to arms. IgE sensitization is the primary outcome.

Start: March 2019