ADA: Metsera asset data support Pfizer’s entry point into obesity market on June 08, 2026 acquisition Adangme language berobenatide Glucagon-Like Peptide 1 Glycosylated hemoglobin A Injection of therapeutic agent MET-097i Metsera monthly Obesity PF-08653944 Pfizer VESPER-2 VESPER-3 Weight Loss +