Pfizer Inc. emerged over the weekend as the winner of the bidding war for Metsera Inc., with the two reaching an amended agreement after market close Nov. 7 that values the obesity drugmaker at about $10 billion. The next day, the other contender, Novo Nordisk A/S, confirmed it does not intend to increase its most recent offer.
Eli Lilly and Co.’s amylin receptor agonist, eloralintide, showed impressive weight loss and improved tolerability in phase II results reported at ObesityWeek 2025, setting the stage for a phase III trial to start next month. The once-weekly drug demonstrated superior mean weight reductions from 9.5% to 20.1% vs. only 0.4% for placebo over 48 weeks, with all treatment arms meeting the primary endpoint, mean percent change in body weight from the average baseline of 240.5 lbs. (109.1 kg).
Pfizer Inc. bounced back in a big way from a GLP-1 trip-up this spring by making known its plan to take over what Metsera Inc. CEO Whit Bernard has called the “scale-obsessed” obesity player that he steers. Pfizer has agreed to pay $47.50 each for all of Metsera’s outstanding shares.
One of the big questions going into the phase I readout for Metsera Inc.’s amylin analogue, MET-233i, was whether findings would support once-monthly dosing for the potential obesity candidate. They did. Results also indicated solid and dose-dependent weight loss activity, and Metsera was able to identify well-tolerated starting doses for subsequent studies, said Steve Marso, chief medical officer. “So we exceeded expectations on all three scientific objectives.”
