STAT+: Novo Nordisk’s next-gen obesity drug stumbles in comparison study

STAT News · Feb 23, 2026 · Collected from RSS

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Andrew Joseph covers health, medicine, and the biopharma industry in Europe. You can reach Andrew on Signal at drewqjoseph.71.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. STAT+ Exclusive Story Already have an account? Log in This article is exclusive to STAT+ subscribers Unlock this article — plus daily coverage and analysis of the pharma industry — by subscribing to STAT+. Already have an account? Log in View All Plans To read the rest of this story subscribe to STAT+. Subscribe