IGHE and chronic obstructive pulmonary disease: A. Fumigatus hypersensitivity was confirmed in 15.0% (41/273) patients, all of whom had an increased level of serum T-IgE, i.e. 31.8% of the COPD patients with elevated serum T-IgE (41/129) were hypersensitive to A. Fumigatus (see Table 2).