An oral complement Factor B inhibitor developed by Novartis Pharmaceuticals for the treatment of complement-mediated diseases • Received its first approval on 5 December 2023 in the USA • Approved for the treatment of adults with paroxysmal nocturnal haemoglobinuria This summary represents the opinions of the author. For a full list of declarations, including funding and author disclosure statements, and copyright information, please see the full text online.