 NEWTON, Mass., May 19, 2021 PRNewswire -- Karyopharm Therapeutics Inc. Nasdaq:KPTI, a commercial-stage pharmaceutical company pioneering novel cancer therapies, today announced that sixteen abstracts have been selected for virtual presentation, including one oral presentation, at the upcoming 2021 American Society of Clinical Oncology ASCO Annual Meeting taking place June 4-8, 2021. 