View clinical trials related to Birch Pollen Allergy.
Filter by:Randomized, double-blind placebo-controlled phase I trial with the primary aim to investigate safety and tolerability of three ascending dosing schemes of DM-101-PX in birch pollen allergic adults. As an explorative objective, the trial will also investigate the effect of DM-101PX on the allergic symptoms following birch pollen allergen exposure in a chamber. Expanded access to the study treatment is not available.
The aim of this clinical phase I single centre, randomized, double-blind, placebo-controlled study with open comparator is to investigate tolerability and safety as well as the immunological effects of BM41 in comparison to placebo (double blind) and to a standard subcutaneous immunotherapy Alutard SQ (open) in birch allergic patients.
About 20% of the general population are affected by an allergy - with an upward trend. Quite often, allergic people do not consider their disease as serious and suffer from subsequent complications, like allergic asthma, later in their life. The sooner the allergen source is identified, the sooner the therapeutic intervention (e.g. dietary recommendations, allergen avoidance, anti-inflammatory treatment or allergen immunotherapy) can be started. Cross-reactivity may also play an important role. Therefore, a comprehensive allergy test is essential for an optimal treatment of patients. Modern multiplex testing is an individualized diagnostic approach, which may help to identify eligible patients for allergen immunotherapy and may identify risk groups by analyzing the sIgE profile. Until now, published data on the clinical usability of multiplex allergy diagnostic test systems are often limited. Even though, available studies show a good correlation between conventionally used multiplex or singleplex assays (ISAC or ImmunoCAP) and the new multiplex assay (ALEX and ALEX²), the results are often based on small sample sizes investigating many different allergens. Therefore, this clinical performance study is conducted to evaluate the diagnostic accuracy of the ALEX² IgE multiplex test using the Multi Array Explorer (MAX 45k, MacroArray Diagnostics) automated laboratory system in comparison to a conventional IgE singleplex test system as well as clinical symptoms and skin prick test results in a total of 826 patients. Patients with the most common inhalant allergies (e.g. grass pollen, house dust mite or cat allergy) will be included as well as patients suffering from Hymenoptera venom allergy, which is the major cause of anaphylaxis.
Randomized, double-blind placebo-controlled phase I study to investigate the safety and tolerability of ascending doses of DM-101 in adult subjects with birch pollen allergy.
The primary objective of the study is to evaluate the safety and tolerability of REGN5713-5714-5715 in healthy adult participants. The secondary objectives of the study are: In Part A and Part B: - To characterize the concentration time profile of single doses of REGN5713-5714-5715 in healthy adults - To assess the immunogenicity of single dose of REGN5713-5714-5715. In Part B: - To assess the inhibition of allergic symptoms as measured by total nasal symptom score (TNSS) provoked by a birch allergen nasal allergen challenge (NAC) in birch-sensitized allergic subjects after a single subcutaneous (SC) dose of REGN5713-5714-5715 - To assess the skin test reactivity provoked by a skin prick test (SPT) with serial birch allergen titration after a single SC dose of REGN5713-5714-5715.
Study aiming to evaluate the efficacy of a 2-month pre-seasonal treatment with an AllerT 50 µg or 100 µg maintenance dose administered in previous study AN004T in reducing symptoms of allergic rhinoconjunctivitis during the 2nd following birch pollen season.
It is an open-label physiological investigation of the allergic skin reactivity to epicutaneous allergen exposition in 20 allergic patients in two different skin conditions. The focus of the study is on the skin preparation/condition and not on the specific allergen or allergy, but for reasons of homogeneity a single allergic disease, birch pollen allergy was chosen as the basis for the testing. In order to evaluate the effects of the two different skin preparation techniques an intraindividual comparison of the skin reactivity in terms of the immediate phase I reaction to serial dilutions of birch pollen extracts was chosen. The serial dilution approach allows a dose dependent effect evaluation and comparison of the sensitivity. The differences will be explained mainly by the two different skin preparations allowing a quantitative comparison of these techniques.
The primary aim of this trial is to evaluate the dose-response relationship for the ALK tree AIT administered once daily in order to define a dose-range that would be suitable for at-home administration.
The objectives of this monocentric investigator initiated exploratory clinical trial is to optimize allergen delivery across the epidermal barrier. The cornified outer epidermal layers represent the main barrier towards entry into the viable epidermal layers. In the latter we aim to target the allergen for uptake by professional antigen presenting cells, called Langerhans cells. At the same time as little allergen as possible should be delivered to the dermis. The latter contains a high density of sensitized mast cells eliciting local reactions and also a high density of blood vessels which could lead to systemic distribution of allergen and therefore to systemic allergic reactions. In birch pollen allergic individuals we will compare different methods of preparing the skin before application of the allergen. We will subsequently apply titrated allergen doses to the prepared skin areas to determine at which dose we start observing mast cell degranulation manifesting as hives. This will allow for determination of the maximal tolerated allergen dose for each skin preparation method. The skin preparation methods compared will be: - Single pricking with prick lancet (Entaco LTD., Redditch, Worcestershire, UK, distributed by Stallergenes®). - Tape stripping with conventional adhesive Tape (Tesa-film®). - Microchanneling with Micro Needle Patch (Micro Skin System, 3M®). The methods are strongly connected to routine diagnostics of allergies with low risk associated. The clinical trial protocol has been submitted to the local Ethics Committee. This comparison of skin preparation methods and the determination of the maximal tolerated allergen dose will help us to further improve epicutaneous allergen immunotherapy, which has the potential to make allergen specific immunotherapy not only considerably shorter and safer, but also more convenient for patients. Skin preparation by microneedle patches is significantly less painful than conventional injection and can be self administered. This should help improve the acceptance of allergen specific immunotherapy, as well as treatment compliance.
More than 70% of birch pollen allergic patients suffer from allergic reactions to certain foods, e.g. stone fruits, hazelnut and some vegetables. However, specific immunotherapy (SIT) with birch pollen extract is not effective for the treatment of associated food allergy in a substantial number of patients. Based on our previous clinical and immunological investigations of birch pollen related food allergy (BPRFA) the investigators hypothesize that for effective SIT of this abundant food allergy the disease-eliciting food allergens should be employed. To prove this concept, the investigators aim to sublingually administer the major apple allergen, Mal d 1, to birch pollen-allergic patients with concomitant apple allergy and evaluate clinical and immunological effects of this treatment. The investigators choose Mal d 1 as model food allergen because (i) its cross-reactivity with Bet v 1 has been well characterized,(ii) apple is the most frequent trigger for BPRFA and (iii) recombinant(r)Mal d 1 was well tolerated after sublingual administration to 20 birch pollen-allergic patients in a previous study. Sublingual administration of a defined concentration of GMP-rMal d 1 will be compared with equal doses of GMP-rBet v 1 as a positive control and placebo-treatment. Clinical parameters will include skin prick tests (SPT) and objective and subjective assessment of apple and birch pollen-induced allergic symptoms. Immunological parameters will comprise the analysis of antibody and T cell responses to Mal d 1 and Bet v 1 as well as the evaluation of basophil activation. The proposed pilot study will be a first investigation of the concept to specifically treat BPRFA with the involved food allergens and thus, represents an important step in the development of an efficient and safe therapy in the future.