Aptevo Therapeutics Inc in the News Aptevo Therapeutics Inc (APVO) has positive results from the Phase 1 dose-escalation trial evaluating its lead ADAPTIR candidate product APVO436 for the treatment of acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS). APVO436 APVO436 - Aptevo's bispecific ADAPTIR that targets CD123 x CD3, is designed to redirect the immune system . . . This content is for paid subscribers. …