Am­gen sev­ers 14-year Cy­to­ki­net­ics part­ner­ship, bail­ing on ome­cam­tiv af­ter mixed PhI­II re­sults

Am­gen is shrug­ging off a 14-year de­vel­op­ment al­liance and the tens of mil­lions of dol­lars spent to de­vel­op a new heart drug at Cy­to­ki­net­ics af­ter a Phase III tri­al turned up weak da­ta — leav­ing Cy­to­ki­net­ics to sol­dier on alone.

Ome­cam­tiv mecar­bil tech­ni­cal­ly worked, meet­ing the pri­ma­ry com­pos­ite end­point in the Phase III GALAC­TIC-HF study. But it missed a key sec­ondary end­point, which an­a­lysts had been fol­low­ing as a key mark­er for suc­cess — re­duc­tion of car­dio­vas­cu­lar (CV) death. While Cy­to­ki­net­ics cel­e­brat­ed the re­sults, its stock tanked 43% up­on the news, and an­a­lysts warned of an un­cer­tain path ahead. Now, Am­gen wants out.

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