Laboratory testing for specific IgE antibodies (View 39 (allergy test that measures specific IgE antibodies); BML Inc., Tokyo, Japan) revealed sensitization to house dust, house dust mites, Japanese cedar (Sugi), and Japanese cypress (Hinoki), with all allergens classified as class 2 (range: 0-6; minimum 0, maximum 6). This evidence concerns the gene IGHE and allergic disease.