Mipletamig Delivers Compelling 86% Clinical Benefit Rate and No CRS as Evaluable AML Patient Data increases by Nearly 50%

“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 Dirk Huebner, M.D., Chief Medical Officer of Aptevo Therapeutics. “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. These results reinforce our belief that mipletamig can be successfully combined with venetoclax and azacitidine, with the potential to enhance outcomes for older and/or unfit AML patients who continue to face poor prognosis and limited treatment options.”

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