As reported in the results, 40% of workers (of which 17% had a positive IgE response to mouse and/or rat) referred sneezing, runny and stuffy nose, red and itchy eyes, 15% (of which 10% had a positive IgE response to mouse and/or rat) reported coughing, asthma and wheeze and 13% (of which 4% had a positive IgE response to mouse and/or rat) referred rash and hives. The gene discussed is IGHE; the disease is asthma.