Pfizer Acquires Metsera to Compete with Zepbound in Obesity Market on September 23, 2025 Acquisition Amylin Clinical Trials dosing Glucagon-Like Peptide 1 MET-097i MET-233i Metsera mimetics monthly Obesity Pfizer Zepbound +
Metsera Reports Once-Monthly Amylin Analogue Matches GLP-1 Efficacy in Early Phase 1 Results on June 10, 2025 Amylin Clinical Trials Glucagon-Like Peptide 1 MET-233i Metsera Obesity once-monthly Phase 1 (qualifier value) weight-loss +