- Based on Results from Phase 3 BOSTON Study, Marketing Authorization Expands Multiple Myeloma Indication - Karyopharm Therapeutics Inc. (Nasdaq:KPTI), a commercial-stage pharmaceutical company pioneering novel cancer therapies, and the Menarini Group ("Menarini"), a privately-held, leading international pharmaceutical company, today announced that the United Kingdom's (UK) Medicines and Healthcare Products Regulatory Agency (MHRA) has granted full Marketing Authorization for NEXPOVIO(R)