Double blind, multicenter, parallel placebo controlled study. It includes 150 subjects sensitised to mites, from 14 to 65 years of age. Medication treatment of 1 year. The main outcome: CSMS
A double-blinded, placebo-controlled, prospective, multicenter randomized of 2 active treatment groups, compared to 1 placebo group, for the determination of the efficacy and safety of subcutaneous immunotherapy in patients with rhinitis/rhinoconjunctivitis with mild to moderate asthma, sensitised to Dermatophagoides pteronyssinus and /or Dermatophagoides farinae.