This study will consist of a screening phase, a treatment phase and a follow-up phase.~Eligible subjects will undergo a bronchial allergen provocation (BAP) with mite allergen to assess the asthmatic response before and after treatment. Subjects will be randomized to two parallel treatment groups. Each subject will be treated weekly over 12 weeks either with test product or with the reference product (placebo).
The study will be conducted as a randomized, double-blind, placebo-controlled, single-center study in adult patients with mild controlled allergic asthma and house dust mite allergy.