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Mazdutide

Phase 2

Obesity | Small molecule | Metabolic |Eli Lilly and Company|Last Updated: Apr 21, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment179
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06124807A Study of LY3305677 Compared With Placebo in Adult Participants With Obesity or OverweightPHASE2 COMPLETED 179Nov 17, 2023Jul 9, 2025Apr 21, 202629 United States
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Study Endpoints
Primary Endpoints
Percent Change From Baseline in Body Weight at Week 32
Baseline, Week 32

Least 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 Endpoints
Percent Change From Baseline in Body Weight at Week 48
Baseline, Week 48
Change From Baseline in Body Weight
Baseline, Week 32, Week 48
Mean Percentage of Participants Who Achieve ≥5% Body Weight Reduction
Baseline, Week 32, Week 48
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
3/6 Milligrams (mg) MazdutideEXPERIMENTALParticipants received once-weekly subcutaneous Mazdutide with dose escalation until the target dose (3 or 6 mg) was achieved, starting at 1.5 mg from Weeks 0-3, followed by 3 mg from Weeks 4-31, then 6 mg from Weeks 32-48.
10 mg MazdutideEXPERIMENTALParticipants received once-weekly subcutaneous Mazdutide with dose escalation until the target dose (10 mg) was achieved, starting at 1.5 mg from Weeks 0-3, followed by 3 mg from Weeks 4-7, 6 mg from Weeks 8-11, 8 mg from Weeks 12-15, and then 10 mg from Weeks 16-48.
16 mg MazdutideEXPERIMENTALParticipants received once-weekly subcutaneous Mazdutide with dose escalation until the target dose (16 mg) was achieved, starting at 1.5 mg from Weeks 0-3, followed by 3 mg from Weeks 4-7, 6 mg from Weeks 8-11, 9 mg from Weeks 12-15, 12 mg from Weeks 16-19, and then16 mg from Weeks 20-48.
PlaceboPLACEBO_COMPARATORParticipants received Mazdutide matched placebo subcutaneously once weekly from Weeks 0 to 48.
Interventions
NameTypeDescription
MazdutideDRUGAdministered subcutaneous (SC)
PlaceboDRUGAdministered SC
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Eligibility Criteria
Age Range18 Years — 75 Years
SexALL
Healthy VolunteersNo
Study Sites29

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 diab...

Countries:United States
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