Karyopharm Therapeutics Inc. (Nasdaq: KPTI) is a commercial-stage pharmaceutical company pioneering novel cancer therapies and dedicated to the discovery, development, and commercialization of novel first-in-class drugs directed against nuclear export and related targets for the treatment of cancer and other major diseases. Karyopharm's Selective Inhibitor of Nuclear Export (SINE) compounds function by binding with and inhibiting the nuclear export protein XPO1 (or CRM1). Karyopharm's lead compound, XPOVIO® (selinexor), received accelerated approval from the U.S. Food and Drug Administration (FDA) in July 2019 in combination with dexamethasone as a treatment for patients with heavily pretreated multiple myeloma. In June 2020, XPOVIO was approved by the FDA as a treatment for patients with relapsed or refractory diffuse large B-cell lymphoma, and in December 2020 XPOVIO in combination with bortezomib and dexamethasone, was approved for the treatment of adult patients with multiple myeloma who have received at least one prior therapy. In 2021, both the European Commission and UK Medicines & Healthcare Products Regulatory Agency (MHRA) granted conditional marketing authorization for NEXPOVIO® (selinexor) in combination with dexamethasone for the treatment of adult patients with relapsed and or refractory multiple myeloma. In addition to single-agent and combination activity against a variety of human cancers, SINE compounds have also shown biological activity in models of neurodegeneration, inflammation, autoimmune disease, certain viruses and wound-healing.
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