Karyopharm Therapeutics Inc. announced that on May 26, 2021 the UK’s Medicines & Healthcare Products Regulatory Agency (MHRA) granted conditional marketing authorization for NEXPOVIO® (selinexor), the Company’s first-in-class, oral Selective Inhibitor of Nuclear Export (SINE) medicine, in combination with dexamethasone for the treatment of multiple myeloma in adult patients who have received at least four prior therapies and whose disease is refractory to at least two proteasome inhibitors, two immunomodulatory agents, and an anti-CD38 monoclonal antibody, and who have demonstrated disease progression on the last therapy.
Conditional marketing authorization is supported by data from the positive Phase 2b STORM study, which evaluated selinexor in adult patients with heavily pretreated, triple class refractory multiple myeloma and was published in the New England Journal of Medicine (Chari, et al.) in August 2019. Under the provisions of conditional approval by the MHRA, continued authorization for this indication is contingent upon verification and description of clinical benefit in a confirmatory trial and is subject to additional monitoring. This marketing authorization follows a similar authorization granted by the European Commission and valid in all 27 European Union (EU) member countries which was announced on March 29, 2021.