Company announcement
No. 23 / 2025
6
Obesity
Petrelintide (amylin analog) partnered with Roche
Background:
Petrelintide (formerly ZP8396) is a long-acting amylin analog
that reduces food intake by restoring leptin sensitivity and
increasing satiety, in contrast to GLP-1RAs that reduce food
intake by suppressing appetite. The molecule is designed to
be chemically and physically stable around neutral pH, and
allow for co-formulation with other peptides, including GLP-
1RA-based molecules. Petrelintide holds potential as a next-
generation, best-in-class alternative to GLP-1RA-based
therapies and a future foundational therapy for the
treatment of overweight and obesity, targeting weight loss
comparable with GLP-1RA-based therapies but with
significantly improved gastrointestinal tolerability for a
better patient experience.
In March 2025, Zealand Pharma announced a collaboration
and license agreement with Roche to co-develop and co-
commercialize petrelintide as a future foundational therapy
for weight management and rapidly expand into related
indications.
Zealand Pharma conducted a Phase 1b, randomized,
multiple ascending dose (MAD) clinical trial of petrelintide in
normal weight and overweight healthy participants
(ClinicalTrials.gov ID: NCT05613387). The MAD trial
consisted of Part 1 and Part 2. Part 1 included 20
participants (eligible BMI 21.0–29.9) receiving six once-
weekly subcutaneous doses of petrelintide or placebo. Part
2 included 48 participants (eligible BMI 27.0–39.9) receiving
16 once-weekly doses of petrelintide or placebo using a
dose up-titration scheme.
Part 1 results were presented at the Obesity Society Annual
Meeting (ObesityWeek) in October 2023. Low doses of 0.6
mg and 1.2 mg petrelintide administered once weekly for six
weeks led to 5.3% and 5.1% mean weight loss from baseline
in enrolled participants (mean body weight of 82 kg and BMI
of 25.4). In the 6-week trial, petrelintide was assessed to be
well tolerated, with no serious or severe adverse events and
no withdrawals. The most common adverse events were
related to the gastrointestinal system, such as nausea. All
gastrointestinal side effects were mild, and most occurred
within two days of the first dose. Based on the mild adverse
event profile, Zealand Pharma initiated Part 2 of the MAD
trial, exploring higher doses of petrelintide over 16 weeks
using a dose up-titration scheme, with results presented at
the Obesity Society Annual Meeting (ObesityWeek) on
November 5, 2024.
In Part 2 of the MAD trial, 48 participants were randomized
(3:1) to receive 16 once-weekly doses of petrelintide or
placebo within three dose cohorts using a dose escalation
scheme. 79% of the 48 trial participants were male and mean
BMI at baseline was 29.9 kg/m
2
. Participants randomized to
petrelintide received the three different maintenance doses
of 2.4 mg, 4.8 mg and 9.0 mg for twelve, eight and six weeks,
respectively. After 16 weeks, mean body weight reductions
were 4.8%, 8.6% and 8.3% for the three petrelintide-treated
groups, respectively, versus 1.7% for the pooled placebo
group. A greater treatment response was observed in
female participants across the three petrelintide-treated
cohorts. Petrelintide was well tolerated, with no serious or
severe adverse events. All gastrointestinal adverse events
were mild, except for two moderate events (nausea and
vomiting) reported by one participant who discontinued
treatment. No other participants discontinued treatment due
to AEs. No other events of vomiting occurred, and two
events of diarrhea were reported, both of which were mild.
There was no clear pattern of differences between men and
women for any AE, including GI AEs. The terminal half-life of
approximately 240 hours, or 10 days, was confirmed.
Zealand Pharma reported topline results from the Phase 1a,
first-in-human, randomized, single ascending dose (SAD) trial
to assess the safety, tolerability, pharmacokinetics, and
pharmacodynamics of petrelintide in healthy volunteers
(ClinicalTrials.gov ID: NCT05096598) in March 2023. Healthy
participants with a mean BMI of 25.8 were randomized (6:2)
within seven dose cohorts and treated with either
subcutaneous petrelintide or placebo. After one week,
participants treated with petrelintide had reductions in
mean body weight of 2.6%, 3.6% and 4.2% from baseline
following single doses of 0.7, 1.4 and 2.4 mg petrelintide.
Body weight reductions were well-sustained during the
additional five weeks of observation without further doses
of petrelintide. Placebo-treated participants had a mean
body weight increase of 0.6% after one week that continued
to increase in most participants during the follow-up period.
The plasma half-life of petrelintide was 230 hours, or
approximately 10 days, supporting once-weekly dose
administration. Petrelintide was well tolerated in this trial,
with no serious or severe adverse events and no
withdrawals. The detailed results were presented at the ADA
83rd Scientific Sessions in June 2023.
Dapiglutide (long-acting GLP-1R/GLP-2R dual agonist)
Background:
Dapiglutide is a long-acting, dual GLP-1R/GLP-2R agonist.
This is a potential first-in-class peptide designed to leverage
the weight loss effects of a potent GLP-1 receptor agonist