To demonstrate superiority of ALK HDM tablets versus placebo in the immune response, measured as change of D. Farinae specific IgG4 from baseline to end of treatment with ALK HDM tablets given once daily over 60 days~To evaluate the immune response, measured as change of D. pteronyssinus, D. farinae specific immunoglobulin E (IgE) and D. pteronyssinus specific IgG4 from baseline to end of treatment with ALK HDM tablets given once daily over 60 days, compared to placebo~To evaluate in patients with HDM-allergic respiratory disease the safety and tolerability of 60-day treatment with ALK HDM tablets compared to placebo
To demonstrate superiority of ALK HDM tablets versus placebo in immune response, measured as change of D.farinae specific immunoglobulin G4 (IgG4) from baseline to end of treatment with ALK HDM tablets given once daily over 60 days.