Medications Onconova Submits Special Protocol Assessment (SPA) To FDA For Phase 3 Trial Of Oral Rigosertib In Combination With Azacitidine (Vidaza®) For First-Line Myelodysplastic Syndromes (MDS) 01/05/2019 NEWTOWN, Pa., Jan. 02, 2019 (GLOBE NEWSWIRE) — Onconova Therapeutics, Inc. (NASDAQ:ONTX), a Phase 3-stage biopharmaceutical company focused on discovering and developing novel products to treat cancer, with Read More