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A Study of LY4329090 in Participants With Obesity or Overweight Who Are Otherwise Healthy

A Phase 1, Participant- and Investigator-Blind, Single-Ascending and Multiple- Ascending Dose Study to Investigate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of LY4329090 in Participants With Obesity or Overweight

Status
Not yet recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07808073
Enrollment
184
Registered
2026-09-08
Start date
2026-09-01
Completion date
2027-09-01
Last updated
2026-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity, Overweight

Brief summary

The main purpose of this study is to assess how well LY4329090 is tolerated and what side effects may occur in healthy participants with obesity or overweight. Blood tests will be performed to investigate how the body processes the study drug and how the study drug affects the body. Study participants will be in one of 2 parts. For each participant in Part A, the study will last about 10 weeks and will include a stay in the Clinical Research Unit (CRU) lasting 5 nights along with 5 outpatient visits to the CRU. For each participant in Part B, the study will last about 21 weeks and will include 4 stays totaling 11 nights along with 14 outpatient visits to the CRU.

Interventions

DRUGLY4329090

Administered SC

DRUGPlacebo

Administered SC

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Participant must be 18 (21 for Singapore site) to 65 years of age, inclusive, at the time of signing the informed consent. * Are overtly healthy with no comorbidities related to body mass index (BMI). * Have a BMI between 27.0 kilograms per square meter (kg/m²) and 40.0 kg/m², inclusive. * Have had a self-reported stable weight for 3 months prior to screening.

Exclusion criteria

* Have a history or presence of cardiovascular, respiratory, hepatic, renal, gastrointestinal (GI), endocrine, hematological, or neurological disorders. * Have a history of chronic medical conditions involving the heart, liver, or kidneys. * Have either * ongoing asymptomatic bradycardia defined as less than 50 beats per minute at screening visit * electrocardiogram (ECG) findings at screening visit of second-degree atrioventricular block or higher, or * history of symptomatic bradycardia with uncorrected etiology, including diagnosis of sick sinus syndrome. * Have an abnormal blood pressure and/or pulse rate at screening. * Have an obesity induced by other endocrinologic disorders or diagnosed monogenetic or syndromic forms of obesity. * Have any of the following: * a diagnosis of hypocalcemia or hypercalcemia, or * confirmed abnormal laboratory values for calcium and serum phosphorus. * Have a known, clinically significant gastric emptying abnormality, have undergone weight loss surgery, or have had endoscopic and/or device-based therapy for obesity or have had device removal within the last 6 months. * Have been diagnosed with type 1 or type 2 diabetes mellitus or have glycated hemoglobin A1c (HbA1c) greater than or equal to (≥) 6.5 percent (%) or 48 millimoles per mole (mmol/mol) at screening. * Have a history or presence of psychiatric disorders, within the last 2 years, that would present a safety risk or may significantly impair the participant's ability to comply with study procedures. * Have taken any glucose-lowering medications, including insulin, in the past 3 months before screening. * Have received any drugs from the incretins class within 90 days prior to screening. * Have been treated within 3 months prior to screening or plan to be treated with prescription medications that promote weight loss. * Intend to use any weight loss medications during study participation. * Prior (within 6 months) or planned (during the study) device-based treatment use for obesity.

Design outcomes

Primary

MeasureTime frame
Number of Participants with One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug AdministrationEnd of Study (Week 28)

Secondary

MeasureTime frame
Pharmacokinetics (PK): Maximum Concentration (Cmax) of LY4329090Baseline through Week 28
PK: Time of Maximum Observed Drug Concentration (Tmax) of LY4329090Baseline through Week 28
PK: Area Under the Concentration Versus Time Curve (AUC) of LY4329090Baseline through Week 28
Pharmacodynamics (PD): Body Weight Change from BaselineBaseline through Week 28

Countries

Singapore, United States

Contacts

CONTACTTrial questions or participation questions: 1-877-CTLILLY (1-877-285-4559) or
LillyTrials@Lilly.com1-317-615-4559
CONTACTPhysicians interested in becoming principal investigators please contact
clinical_inquiry_hub@lilly.com
STUDY_DIRECTORCall 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 8 AM - 8 PM Eastern time (UTC/GMT - 5 hours, EST)

Eli Lilly and Company

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026