Diurnal is a clinical stage specialty pharmaceutical company focused on diseases of the endocrine system. Its two lead candidates are targeted at rare diseases with unmet medical need, with the aim of building a long-term ‘Adrenal Franchise’. Following successful completion of a Phase III trial, Infacort has been submitted to the European regulator for final approval. Meanwhile, management is establishing the appropriate commercial infrastructure in readiness for launch of Infacort and Chronocort in 2018 and 2020, respectively. Diurnal is also in the process of expanding its portfolio of products in the endocrine area.