Aptevo Therapeutics Inc. (NASDAQ:APVO), a clinical-stage biotechnology company developing novel immune-oncology therapeutics based on its proprietary ADAPTIR™ and ADAPTIR-FLEX™ platform technologies, today announced new interim data for mipletamig in combination with venetoclax and azacitidine in newly diagnosed acute myeloid leukemia (AML) patients who are either elderly or unfit for intensive chemotherapy.
In data from two trials, the combination has demonstrated robust clinical activity, delivering an 86% clinical benefit rate (CR/CRi/PR*)with zero patients experiencing the common symptom of cytokine release syndrome (CRS). These data support an emerging efficacy profile coupled with differentiated patient safety and tolerability that is additive to the current AML standard-of-care therapy.
"The emerging mipletamig data in frontline AML are highly encouraging and highlight the differentiated profile we believe is needed to advance treatment in frontline AML," said Chief Medical Officer Dirk Huebner.
"In this study we are observing strong remission rates in a growing number of evaluable patients together with a consistently favorable safety and tolerability profile, including the absence of cytokine release syndrome. Achieving meaningful clinical activity while maintaining this level of safety and tolerability is essential in the frontline AML setting, where therapies must be compatible with established regimens."
APVO shares tanked 86 cents, or 12.8%, to $5.87.
