Novo Nordisk’s next-generation weight loss drug CagriSema, one of the company’s key hopes to help it regain its footing in the increasingly competitive obesity market, failed in a key study that compared it to rival Eli Lilly’s tirzepatide, Novo said Monday.
The open-label REDEFINE 4 study was designed to test whether CagriSema could help patients lose the same amount of weight as those who received tirzepatide, which is sold as Zepbound and Mounjaro. But over 84 weeks, patients in the CagriSema arm saw a weight loss of 20.2%, versus 23.6% for those getting tirzepatide. Statistically, the results did not show that CagriSema performed equivalently to Lilly’s drug — what’s known as non-inferiority.
Novo shares were down more than 12% in early trading in Copenhagen. Lilly shares were up 4% in pre-market trading in the U.S.
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