Nearly three months after winning a contentious bid to buy obesity drugmaker Metsera Inc. for $10 billion, Pfizer Inc. reported its first statistically significant top-line data of the acquired lead, ultra-long-acting glucagon-like peptide-1 (GLP-1) receptor agonist, showing a mean placebo-adjusted weight loss of up to 12.3% at 28 weeks, as well as competitive tolerability.
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.
Pfizer Inc. upped its original $7.3 billion September offer to buy Metsera Inc., but the obesity specialist maintained that a now-improved unsolicited bid by semaglutide developer Novo Nordisk A/S is superior.
Phase IIb data of Metsera Inc.’s lead GLP-1 receptor agonist, MET-097i, showed significant weight loss and good tolerability, supporting a phase III start later this year, and validating Pfizer Inc.’s decision a week ago to buy the obesity-focused company for $7.3 billion.
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.”
Pfizer Inc. is ending work on oral GLP-1 candidate danuglipron for weight loss following the report of a single potentially drug-induced liver injury, a move that appears to open the door for other firms working on oral therapies in the high-dollar obesity space, even as industry watchers seek further details to determine whether similar safety signals could emerge for those competitors.
