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Petrelintide phase 1 · GLP Finds editorial

Petrelintide: an early look at weight loss

A small study looked at weight and safety over 16 weeks.

Summary

Petrelintide targets amylin, a different hormone pathway from GLP medicines.

What researchers tested

In Germany, 48 adults with overweight or obesity were assigned weekly petrelintide or placebo for 16 weeks. Safety was the main question; weight was secondary. Results are observed weight changes, not placebo-adjusted differences.

Observed average weight loss at week 16
Percent of starting weight; sequential cohorts, not placebo-adjusted
2.4 mg target4.8%4.8 mg target8.6%9.0 mg target8.3%Placebo1.7%

Original visual based on the study.

Observed average weight loss at week 16
Group or measureResult
2.4 mg target4.8%
4.8 mg target8.6%
9.0 mg target8.3%
Placebo1.7%

The trade-offs

Three of 36 petrelintide participants stopped: two for personal reasons and one because of digestive symptoms. No serious or severe treatment-emergent adverse events were reported. Nausea occurred.

What it means

This cannot establish long-term safety or superiority over other medicines. All participants were White and most were men.

Zealand Pharma funded the research and manuscript.

Sources

Olsen and colleagues, Diabetes, Obesity and Metabolism, 2026