According to this analysis, we confirmed that the severity of AD is in significant relation to the sensitization to molecular components of storage mites, lipocalins, arginine kinase, uteroglobin, Mn superoxide dismutase (Mala s 11), PR-10 proteins, Der p 21, Der p 23—peritrophin-like domain and to Secc pollen. This evidence concerns the gene SOD2 and Alzheimer disease.