Core Viewpoint - Pfizer has faced setbacks in its GLP-1 drug development, terminating its last candidate due to poor data and increasing market competition [2][3]. Group 1: Termination of GLP-1 Candidates - Pfizer announced the termination of its GLP-1 receptor agonist PF-06954522, which entered Phase 1 clinical trials in 2023, due to unsatisfactory data and market evaluation [2][3]. - Prior to this, Pfizer had already halted the development of oral GLP-1 candidates lotiglipron and danuglipron due to safety concerns related to liver enzyme elevation and potential liver damage, respectively [3][4]. - The company confirmed that the termination of PF-06954522 was not due to safety issues, as no safety hazards were found in Phase 1 trials [3]. Group 2: Future Directions and Strategy - Following the setbacks, Pfizer's pipeline in obesity treatment has been reduced to only one candidate, PF-07976016, a GIP receptor antagonist currently in Phase 2 trials [4]. - Pfizer is shifting focus towards external collaborations to supplement its internal research efforts, with CEO Albert Bourla emphasizing the importance of obesity and cardiometabolic diseases in the company's strategic priorities [5]. - Future product line expansions will primarily involve smaller acquisitions rather than large-scale transactions, with a rational approach to pricing [5][6]. Group 3: Other Development Projects - Pfizer has not abandoned its C. difficile vaccine project, PF-06425090, despite previous clinical trial failures, and is developing a new generation vaccine expected to enter Phase 3 trials later this year [6][8]. - The new vaccine has shown a fourfold increase in neutralizing antibody potency compared to the original vaccine and requires only two doses instead of three [8]. - Pfizer also confirmed the termination of two other Phase 1 projects: PF-07293893 for heart failure and PF-07820435 for solid tumors [8].