The goal of this clinical trial is to assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of once-weekly subcutaneous injections of MET233 in otherwise healthy adults with overweight or obesity. This study will be conducted in four parts: * Part A will evaluate single ascending doses of MET233 or placebo. * Part B will evaluate multiple ascending doses, with participants receiving five once-weekly doses of MET233 or placebo. * Part C will evaluate once-weekly dosing of MET233 or placebo for 12 weeks, followed by a single higher, potential monthly dose. * Part D will evaluate a longer dosing schedule, in which participants will receive twelve once-weekly doses, followed by three monthly doses of MET233 or placebo. Participants in this part will be followed for 14 weeks after the final dose.
Phase 1 trials primarily test safety and dosing in a small number of participants (typically 20–100). Results do not yet speak to efficacy. FDA approval is typically many years away from this stage.
This trial has completed. Results may be available via ClinicalTrials.gov or peer-reviewed publications.
Pfizer Inc (PFE) is the sponsoring company for this trial. BiotechSign currently grades this company C (52/100) based on composite catalyst signals across its full pipeline. This trial is one data point in that overall catalyst picture.