Zealand Pharma announces completion of enrollment in the Phase 2b ZUPREME-1 trial of petrelintide in people with overweight or obesity

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Zealand Pharma
Zealand Pharma

Press release – No. 4 / 2025

Zealand Pharma announces completion of enrollment in the Phase 2b ZUPREME-1 trial of petrelintide in people with overweight or obesity

  • Initiated in December 2024, the Phase 2b ZUPREME-1 trial is designed to evaluate five target doses of petrelintide up to 9 mg over 42 weeks of treatment.

  • Zealand Pharma remains on track to initiate the Phase 2b ZUPREME-2 trial of petrelintide in people with overweight or obesity and type 2 diabetes in the first half of 2025.

Copenhagen, Denmark, March 17, 2025 - Zealand Pharma A/S (Nasdaq: ZEAL) (CVR-no. 20045078), a biotechnology company focused on the discovery and development of innovative peptide-based medicines, today announced that the last participant has been enrolled and randomized to active treatment or placebo in ZUPREME-1, a global Phase 2b trial in people with obesity or overweight with weight-related comorbidities comparing once-weekly subcutaneously administered petrelintide, a long-acting amylin analog, versus placebo with regards to effects on body weight, safety, and tolerability1.

“We are excited to announce the rapid completion of enrollment and randomization in the Phase 2b ZUPREME-1 clinical trial with petrelintide in people with overweight or obesity, just three months after initiation”, said David Kendall, MD, Chief Medical Officer of Zealand Pharma. “This achievement reflects both the strong interest in amylin agonists from the clinical community and highlights the importance of developing new treatment options that can leverage distinct mechanisms of action to better serve those living with overweight and obesity”.

About ZUPREME-1

ZUPREME-1 is a randomized, double-blind, placebo-controlled, parallel-group, multinational, multicenter, dose-finding, Phase 2 clinical trial (ClinicalTrials.gov ID: NCT06662539). The trial compares five doses of once-weekly petrelintide with placebo, when added to a reduced-calorie diet and increased physical activity in people with obesity or overweight with weight-related comorbidities.

The trial includes a screening period, a dose escalation period up to 16 weeks with dose escalation every fourth week followed by a maintenance period until week 42, and a follow-up period after treatment is completed until week 51. ZUPREME-1 has enrolled more than 480 participants across 33 sites in the United States, Poland, and Romania.

The primary endpoint in the trial is the percentage change in body weight from baseline to week 28. Secondary endpoints include, but are not limited to, percentage change in body weight from baseline to week 42, change in waist circumference, change in hemoglobin A1c (HbA1c), change in high-sensitivity C-reactive protein (hsCRP), change in fasting lipids, and change in fasting glucose. Change in body composition at week 42 measured by Magnetic Resonance Imaging (MRI) is included as an exploratory endpoint in the trial.