Green-light­ed in Japan, FDA quick­ly spurns Dai­ichi Sanky­o's flawed ap­pli­ca­tion for AML drug

Three days af­ter win­ning Japan­ese ap­proval for its acute myeloid leukemia drug quizar­tinib, Dai­ichi Sankyo is be­ing forced to en­dure an em­bar­rass­ing re­jec­tion at the hands of the FDA.

US reg­u­la­tors wast­ed no time in bat­ting back quizar­tinib af­ter first high­light­ing the messy da­ta in its ap­pli­ca­tion in an in­ter­nal re­view, that in turn per­suad­ed a large ma­jor­i­ty of out­side ex­perts to rec­om­mend a re­jec­tion for the drug, which tar­gets FLT3-ITD–pos­i­tive AML cas­es.

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