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Expectations from Pfizer’s Early Metsera Data

Pfizer shares early trial results of its obesity drug PF’3944, showing promising weight loss outcomes and plans for large Phase 3 studies.

Category: Science Published Date: 6 February 2026
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Introduction

Pfizer is a well-known multinational biotechnology and pharmaceutical company focused on vaccines and drugs. The company operates its business in 125+ countries, exceeding its milestone time and again. Pfizer’s performance in inflammation, rare disease, oncology and immunology is incredible for the patient's health. The company’s innovation lies in resources and science, which bolsters manufacturing, development and discovery.

Announcement

Pfizer’s early metsera data on obesity were okay, but analysts expect more details. As seen, a slight touch-up of the company’s acquisition-based obesity asset PF’3944 delivered what was essential for the Phase 3 trial last year. The analyst was looking for more information that could meet certain specificities to claim its potential confidently.

Pfizer’s PF’3944 support for the trial

The PF’3944 is a new name, which was formerly known as MET-097i. PF’3944 achieved 12.3% weigh loss in the robust Phase 2b VESPER-3 trial in the 28 week. The promising results were confirmed from the 3.2-mg and 4.8 mg cohorts, involving monthly treatments. The data showed up competitive enough according to BMO Capital Markets.

Though there are significant points, Leerink Partners had a sceptical thought that formed concern regarding the data claiming to be competitive. Following this, the readouts failed to mention or consider a few points of the placebo cohort, which might make a huge difference altogether. The data is definitely commendable, but the missed points might turn out to be a huge failure. Alongside, Chief Scientific Officer Chris Boshoff said on a call that the cohort's weight was almost stable.

Will the assumption work?

If there’s an assumption where there’s no weight loss or gain in the placebo group, then it’s a wonder, the next gold standard discovered by the analyst. Then this data is a great competition to other weight loss candidates. Boshoff stated that the study has fulfilled two key objectives: to win in weight loss consistency while jumping from week to month dosages and to achieve a tolerability and safety criteria.

CEO Albert Bourla said, “This is the first time we have taken GLP-1 receptor agonist peptides monthly in a frame of consideration without compromising with the competitive potency regarding sales and efficacy.”

Though there are different points of view of many healthcare leaders and analyst but, Pfizer have trust in its comprehensive data and clinical trial performances. Further, the company is excited to work on 10 Phase 3 trials, which will be a boon to its obesity portfolio.

Author

Mansi Kadam

Mansi Kadam

Mansi Kadam is a market research writer with over 3 years of experience analyzing trends in the healthcare industry. At Towards Healthcare, she covers innovations in medical sector, sustainability initiatives, and the evolving regulatory landscape.