Diurnal Group plc announced the grant of a key patent for Chronocort (modified release hydrocortisone) by the European Patent Office. EP2814469, entitled "Hydrocortisone controlled-release formulation", is a patent disclosing and claiming the composition of matter and medical use of Chronocort® for the treatment of patients with the rare diseases congenital adrenal hyperplasia (CAH) and adrenal insufficiency (AI). The patent provides in-market European protection until 2033 in all designated states of the European Patent Convention. The equivalent patents from the same family are already granted in the UK, Canada, Mexico, New Zealand, Japan, Australia, Israel, South Africa, South Korea and in the US. The Marketing Authorisation Application (MAA) for Chronocort® as a treatment for adolescents and adults with CAH is under review by the European Medicines Agency (EMA) following submission of the MAA dossier in December 2019. The MAA was subsequently validated and accepted for review by the EMA in April 2020 and the outcome of the EMA review is anticipated during first quarter of 2021.