Controller medicines, such as inhaled corticosteroids (ICS), long-acting muscarinic antagonists (LAMA), long-acting β2 agonists (LABA) and anti-immunoglobulin E (anti-IgE), are taken preventatively to manage asthma and COPD – although the effectiveness of anti-IgE has been questioned [8]. Here, IGHE is linked to asthma.