Skip to content

A Study of LY3305677 Compared With Placebo in Adult Participants With Obesity or Overweight

A Phase 2, Parallel-Group, Double-Blind, 4-Arm Study to Investigate Weight Management With LY3305677 Compared With Placebo and in Adult Participants With Obesity or Overweight

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06124807
Enrollment
179
Registered
2023-11-09
Start date
2023-11-17
Completion date
2025-07-09
Last updated
2026-04-21

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

Conditions

Obesity, Overweight and Obesity

Keywords

Incretins, Weight Loss, Overnutrition

Brief summary

The main purpose of this study, performed under a master protocol W8M-MC-CWMM (NCT06143956), is to investigate weight management efficacy and safety with Mazdutide compared with placebo and in adult participants with obesity or overweight. The study will last about 62 weeks.

Interventions

Administered subcutaneous (SC)

DRUGPlacebo

Administered SC

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

W8M-MC-OXA1: * Are males and females who agree to abide by the reproductive and contraceptive requirements W8M-MC-CWMM: * Have a BMI ≥27 kilograms per square meter (kg/m²)

Exclusion criteria

W8M-MC-OXA1: * Have any prior diagnosis of diabetes mellitus, that is type 2 diabetes mellitus (T2DM), or rare forms of diabetes mellitus, except gestational diabetes. * Have any of the following cardiovascular conditions within 6 months prior to screening: * acute myocardial infarction * cerebrovascular accident (stroke) * unstable angina, or * hospitalization due to congestive heart failure (CHF). * Have a history of New York Heart Association (NYHA) Functional Classification I-IV CHF. * Participants with hypertension who do not have well-controlled blood pressure (BP) (\>140/90 mmHg), regardless of antihypertensive treatment. Participants receiving treatment for hypertension should be on a stable antihypertensive regimen for at least 3 months prior to screening. * Have a history of acute or chronic pancreatitis. Note: If the investigator anticipates a need to add antihypertensive medication during the study, the participant should not be included in the ambulatory blood pressure monitoring (ABPM) procedures. CWMM: * Have a prior or planned surgical treatment for obesity, except prior liposuction or abdominoplasty, if performed \>1 year prior to screening. * Have type 1 diabetes mellitus, latent autoimmune diabetes in adults, or history of ketoacidosis or hyperosmolar coma. * Have poorly controlled hypertension. * Have signs and symptoms of any liver disease other than nonalcoholic fatty liver disease. * Have a history of symptomatic gallbladder disease within the past 2 years. * Have a lifetime history of suicide attempts.

Design outcomes

Primary

MeasureTime frameDescription
Percent Change From Baseline in Body Weight at Week 32Baseline, Week 32Least squares means were calculated using an MMRM model for post-baseline measures: Variable = Baseline\*Time + Strata\*Time + Treatment\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Percent Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).

Secondary

MeasureTime frameDescription
Percent Change From Baseline in Body Weight at Week 48Baseline, Week 48Least squares means were calculated using an MMRM model for post-baseline measures: Variable = Baseline\*Time + Strata\*Time + Treatment\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Percent Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).
Change From Baseline in Body WeightBaseline, Week 32, Week 48Least squares means were calculated using an MMRM model for post-baseline measures: Variable = Baseline\*Time + Strata\*Time + Treatment\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).
Mean Percentage of Participants Who Achieve ≥5% Body Weight ReductionBaseline, Week 32, Week 48Mean percentage of participants who achieve ≥5% body weight reduction was calculated using imputed data with the logistic regression model Variable = Baseline + Treatment + Strata (Sex), where Treatment and Strata (Sex) are factors. Mean percentage of participants was calculated by combining percentage of participants achieving target at week 32 and week 48 respectively in imputed data sets using Rubin's rule.
Mean Percentage of Participants Who Achieve ≥10% Body Weight ReductionBaseline, Week 32, Week 48Mean percentage of participants who achieve ≥10% body weight reduction was calculated using imputed data with the logistic regression model Variable = Baseline + Treatment + Strata (Sex), where Treatment and Strata (Sex) are factors. Mean percentage of participants was calculated by combining percentage of participants achieving target at week 32 and week 48 respectively in imputed data sets using Rubin's rule.
Change From Baseline in Body Mass Index (BMI)Baseline, Week 32, Week 48Least squares means were calculated using an MMRM model for post-baseline measures: Variable = Baseline\*Time + Strata\*Time + Treatment\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).
Number of Participants With Treatment Emergent Anti-drug Antibodies (TE-ADAs)Baseline up to week 56Blood samples were tested to determine if a participant reacted to Mazdutide by producing anti-Mazdutide antibodies. A participant is TE ADA evaluable if there is at least one non-missing test result for ADA for each of the baseline period and the postbaseline period. A TE ADA evaluable participant is considered to be TE ADA+ if the participant has at least one postbaseline titer that is a 4-fold or greater increase in titer from baseline measurement. If baseline result is ADA Not Present, then the subject is TE ADA+ if there is at least one postbaseline result of ADA Present with titer \>=1:20.
Pharmacokinetics (PK): Area Under the Curve (AUC) of Mazdutide at Steady StatePredose at Week 0, Week 4, Week 8, Week 12, Week 24, Week 32, Week 48; Post dose (2 to 6 hours after dosing) at Week 0, Week 12, Week 24PK samples were analyzed using a population PK approach to estimate AUC at steady state. Data presented are Geometric mean with 90% prediction interval.
PK: Maximum Concentration (Cmax) of Mazdutide at Steady StatePredose at Week 0, Week 4, Week 8, Week 12, Week 24, Week 32, Week 48; Post dose (2 to 6 hours after dosing) at Week 0, Week 12, Week 24PK samples were analyzed using a population PK approach to estimate Cmax at steady state. Data presented are Geometric mean with 90% prediction interval.
Change From Baseline in Liver Fat Content (LFC) by Magnetic Resonance Imaging Proton Density Fat Fraction (MRI-PDFF) in Participants With Baseline LFC >=5%Baseline, Week 32, Week 48Least squares means were calculated using an MMRM model for post-baseline measures: log(Actual Measurement/Baseline) = Treatment\*Time + log(Baseline)\*Time + Strata\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).
Percent Change From Baseline in Liver Fat Content by MRI-PDFF in Participants With Baseline LFC >=5%Baseline, Week 32, Week 48Least squares means were calculated using an MMRM model for post-baseline measures: log (Actual Measurement/Baseline) = Treatment\*Time + log (Baseline)\*Time + Strata\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).
Change From Baseline in Liver Fat Content by MRI-PDFF in Participants With Baseline LFC >=10%Baseline, Week 32, Week 48Least squares means were calculated using an MMRM model for post-baseline measures: log (Actual Measurement/Baseline) = Treatment\*Time + log (Baseline)\*Time + Strata\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).
Percent Change From Baseline in Liver Fat Content by MRI-PDFF in Participants With Baseline LFC >=10%Baseline, Week 32, Week 48Least squares means were calculated using an MMRM model for post-baseline measures: log (Actual Measurement/Baseline) = Treatment\*Time + log (Baseline)\*Time + Strata\*Time, where Treatment and Strata are factors. Variance-Covariance structure (Change from Baseline) = Unstructured. Strata is defined by joint levels of Sex and Baseline BMI (\<=30, \>30 kg/m\^2).
Mean Percentage of Participants With Baseline Liver Fat Content (LFC) >= 5% Who Achieved >30% Relative Reduction in LFCBaseline, Week 32, Week 48mean Percentage of participants with baseline liver fat content (LFC) \>= 5% who achieved \>30% relative reduction in LFC was estimated using imputed data with the logistic regression model Variable = Baseline + Treatment + Strata (Sex), where Treatment and Strata (Sex) are factors. Mean percentage of participants was calculated by combining percentage of participants achieving target at week 32 and week 48 respectively in imputed data sets using Rubin's rule.
Mean Percentage of Participants With Baseline Liver Fat Content (LFC) >=10% Who Achieved >30% Relative Reduction in LFCBaseline, Week 32, Week 48Mean Percentage of participants with baseline liver fat content (LFC) \>=10% who achieved \>30% relative reduction in LFC was estimated using imputed data with the logistic regression model Variable = Baseline + Treatment + Strata (Sex), where Treatment and Strata (Sex) are factors. Mean percentage of participants was calculated by combining percentage of participants achieving target at week 32 and week 48 respectively in imputed data sets using Rubin's rule.

Countries

United States

Contacts

STUDY_DIRECTORCall 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST)

Eli Lilly and Company

Baseline characteristics

Characteristic
Age, Continuous47.7 years
STANDARD_DEVIATION 12.3
Body Weight103.1 Kilograms (Kg)
STANDARD_DEVIATION 21.2
Ethnicity (NIH/OMB)
Hispanic or Latino
11 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
23 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
Race (NIH/OMB)
Asian
9 Participants
Race (NIH/OMB)
Black or African American
9 Participants
Race (NIH/OMB)
More than one race
6 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
Race (NIH/OMB)
White
125 Participants
Region of Enrollment
United States
32 Participants
Sex: Female, Male
Female
118 Participants
Sex: Female, Male
Male
16 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 470 / 320 / 470 / 51
other
Total, other adverse events
34 / 4729 / 3237 / 4745 / 51
serious
Total, serious adverse events
1 / 471 / 321 / 472 / 51

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 7, 2026