Are there differences in asthma phenotypes and disease clusters between white patients and patients from ethnic minority groups?Is uncontrolled asthma directly attributable to socio‐demographic variables (e.g. socio‐economic status, literacy, access to specialist, air pollution etc.) or is the disease intrinsically more severe in patients from ethnic minority groups?Are there differences in key blood parameters such as peripheral blood and sputum eosinophils/neutrophils and serum total IgE between white patients and those from ethnic minority groups? The gene discussed is IGHE; the disease is asthma.