Testing a new medicine for people with overweight or obesity

A Randomised, Placebo Controlled, Double Blinded Study Assessing the Safety, Tolerability and Pharmacokinetics of Single and Multiple Subcutaneous Doses of NNC0638-0355 in Participants With Overweight or Obesity

Phase 1 Interventional Novo Nordisk A/S · NCT06577766

This study is testing a new medicine to see if it can help adults with overweight or obesity lose weight and improve their health.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment88 (estimated)
Ages18 Years to 55 Years
SexAll
SponsorNovo Nordisk A/S Industry-sponsored
Locations2 sites (San Antonio, Texas and 1 other locations)
Trial IDNCT06577766 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety and effectiveness of a new medicine, NNC0638-0355, in individuals living with overweight or obesity. Participants will receive either the study medicine or a placebo through an injection, with the treatment assignment determined randomly. The study aims to understand how the medicine works in the body and how the body responds to it. The trial is designed for healthy adults aged 18-55 with a specific BMI range.

Who should consider this trial

Good fit: Ideal candidates are healthy males and females aged 18-55 with a BMI between 25.0 and 34.9 kg/m².

Not a fit: Patients with known hypersensitivity to the study medicine or those with certain health conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to a new treatment option for individuals struggling with overweight or obesity.

How similar studies have performed: Other studies have shown promise in developing new treatments for obesity, but this specific approach is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Key inclusion criteria

* Male or female.
* Age 18-55 years (both inclusive) at the time of signing the informed consent.
* BMI between 25.0 and 34.9 kg/m\^2 (both inclusive) at screening. Overweight should be due to excess adipose tissue, as judged by the investigator.
* Considered to be generally healthy based on the medical history, physical examination, and the results of vital signs, electrocardiogram and clinical laboratory tests performed during the screening visit, as judged by the investigator.

Key exclusion criteria

* Known or suspected hypersensitivity to study intervention(s) or related products.
* Any condition, which in the investigator's opinion might jeopardise participant's safety or compliance with the protocol.
* HbA1c greater than or equal to 6.5 percentage (48 mmol/mol) at screening.
* Any laboratory safety parameters at screening outside the below laboratory ranges, see designated reference range documents for specific values:

  1. Vitamin D (25-hydroxycholecalciferol) less than 12 ng/mL (30 nM) at screening
  2. Parathyroid hormone (PTH) outside normal range at screening
  3. Total calcium outside normal range at screening

Where this trial is running

San Antonio, Texas and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions ObesityOverweight
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.