IGHE and allergic rhinitis: Subjects with asthma had increased IgE levels against whole cat extract than subjects without asthma (5.15 kUA/l vs. 2.08 kUA/l, respectively, p < 0.001), while it did not differ according to the presence of allergic rhinitis (3.46 kUA/l vs. 2.56 kUA/l, respectively, p = 0.567) (Figure 3).