Voxelotor is as an oral, once-daily therapy that is being developed for treatment of SCD. It is designed to work by helping haemoglobin hold onto more oxygen as the red blood cells travel through the body. This keeps red blood cells in their normal shape and helps stop sickling. As there is a desperate need for new treatments for SCD, voxelotor, if licensed, will offer a new treatment option for patients with SCD.
Givosiran is made of a short, synthetic strand of genetic material called ‘small interfering RNA’ (siRNA) that has been designed to interfere with the production of an enzyme involved in an early step in making haem. By blocking this early step of haem production in patients with AHP, givosiran is expected to prevent the next steps which produce substances that accumulate in the body and cause the symptoms of the disease.