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LY3532226

Phase 2

Diabetes Mellitus, Type 1 | Small molecule | Metabolic |Eli Lilly and Company|Trials Updated: Oct 9, 2026

LY3532226 development status

Highest phase Phase 2 (NCT06143956)
Phase scored for LLYPhase 1
Registered trials 8 across 1 sponsor since Jun 2021

LY3532226 target and mechanism

ModalitySmall molecule

Also known as Macupatide

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials6
Total Enrollment912

FDA Designations

No designations recorded

LY3532226 clinical trials

LY3532226 · 6 trials · 4 indications

Phase 2 2Phase 1 4
NCT07589608A Study to Investigate Weight Management With Macupatide and Eloralintide, Alone or in Combination, in Adult Participants With Obesity or OverweightOverweight
RECRUITING400 Analytics
NCT07215559A Study of Macupatide (LY3532226) and Eloralintide (LY3841136), Alone or in Combination, in Adults With Obesity or Overweight and With Type 2 DiabetesObesity
ACTIVE NOT_RECRUITING200 Analytics
PHASE2RECRUITING
A Study to Investigate Weight Management With Macupatide and Eloralintide, Alone or in Combination, in Adult Participants With Obesity or Overweight
OverweightUnlock trial analytics
PHASE2ACTIVE NOT_RECRUITING
A Study of Macupatide (LY3532226) and Eloralintide (LY3841136), Alone or in Combination, in Adults With Obesity or Overweight and With Type 2 Diabetes
ObesityUnlock trial analytics

Study Endpoints

Primary Endpoints

Percent Change from Baseline in Body Weight
Baseline, Week 36
Number of Participants with One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration
End of Study (Week 25)
Part A: Number of Participants with One or More Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration
Baseline to Study Completion (Up to 16 Weeks)

A summary of TEAEs and SAEs, regardless of causality, will be reported in the Reported Adverse Events module

Part B: Number of Participants with One or More Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration
Baseline to Study Completion (Up to 20 Weeks)

A summary of TEAEs and SAEs, regardless of causality, will be reported in the Reported Adverse Events module

Part C: Number of Participants with One or More Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration
Baseline to Study Completion (Up to 8 Weeks)]

A summary of TEAEs and SAEs, regardless of causality, will be reported in the Reported Adverse Events module

Pharmacodynamics (PD): Area under the concentration versus time curve from time 60 to 120 minutes (AUC60-120min) of plasma glucagon during the insulin-induced hypoglycemia
Predose up to 120 mins postdose

PD: AUC60-120min of plasma glucagon during the insulin-induced hypoglycemia

Part B: Change from Baseline in Total Clamp Disposition Index (cDI)
Baseline up to Week 12

Change from Baseline in Total cDI

Secondary Endpoints

Percent Change from Baseline in Body Weight
Baseline, Week 48
Change from Baseline in Body Weight
Baseline, Week 36
Percentage of Participants who Achieve ≥5% Body Weight Reduction
Week 36
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Macupatide Dose 1EXPERIMENTALParticipants will receive macupatide subcutaneously (SC)
Eloralintide Dose 1EXPERIMENTALParticipants will receive eloralintide SC
Macupatide Dose 1 + Eloralintide Dose 1EXPERIMENTALParticipants will receive macupatide SC and eloralintide SC
Eloralintide Dose 2EXPERIMENTALParticipants will receive eloralintide SC
Macupatide Dose 1 + Eloralintide Dose 2EXPERIMENTALParticipants will receive macupatide SC and eloralintide SC
Eloralintide Dose 3EXPERIMENTALParticipants will receive eloralintide SC
Macupatide Dose 2 + Eloralintide Dose 3EXPERIMENTALParticipants will receive macupatide SC and eloralintide SC
PlaceboPLACEBO_COMPARATORParticipants will receive placebo SC
Macupatide (Macupatide + Eloralintide Placebo)EXPERIMENTALParticipants will be administered macupatide subcutaneously (SC) and eloralintide placebo SC
Eloralintide (Elorlintide + Macupatide Placebo)EXPERIMENTALParticipants will be administered eloralintide SC and macupatide placebo SC
Macupatide + EloralintideEXPERIMENTALParticipants will be administered eloralintide SC and macupatide SC
Placebo (Macupatide Placebo + Elorlintide Placebo)PLACEBO_COMPARATORParticipants will be administered eloralintide placebo SC and macupatide placebo SC
Macupatide + placeboEXPERIMENTALMacupatide and placebo administered subcutaneously (SC)
Eloralintide + placeboEXPERIMENTALEloralintide and placebo administered SC
Macupatide Dose A + EloralintideEXPERIMENTALMacupatide and Eloralintide administered SC
Macupatide Dose B + EloralintideEXPERIMENTALMacupatide and Eloralintide administered SC
LY3532226 (Part A)EXPERIMENTALLY3532226 administered subcutaneously (SC)
Placebo (Part A)PLACEBO_COMPARATORPlacebo administered SC
LY3532226 (Part B)EXPERIMENTALLY3532226 administered SC
Placebo (Part B)PLACEBO_COMPARATORPlacebo administered SC
LY3532226 (Part C)EXPERIMENTALLY3532226 administered SC
Placebo (Part C)PLACEBO_COMPARATORPlacebo administered SC
LY3532226EXPERIMENTAL -
LY3532226 + Dulaglutide (Part A)EXPERIMENTALLY3532226 administered subcutaneously (SC) followed by dulaglutide administered SC.
Placebo + Dulaglutide (Part A)PLACEBO_COMPARATORPlacebo administered SC followed by dulaglutide administered SC.
Dulaglutide + Placebo (Part B)ACTIVE_COMPARATORDulaglutide administered SC in combination with placebo given SC.
LY3532226 + Dulaglutide (Part B)EXPERIMENTALLY3532226 administered SC in combination with Dulaglutide given SC.
LY3532226 + Placebo (Part B)EXPERIMENTALLY3532226 administered SC in combination with placebo given SC.

Interventions

NameTypeDescription
MacupatideDRUGAdministered SC
EloralintideDRUGAdministered SC
PlaceboDRUGAdministered SC
Macupatide PlaceboDRUGAdministered SC
Eloralintide PlaceboDRUGAdministered SC
LY3532226DRUGAdministered SC
DulaglutideDRUGAdministered SC.
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites40

Inclusion Criteria: * See Master Protocol CWMM (NCT06143956) for inclusion criteria Exclusion Criteria: In addition to exclusion criteria in Master Protocol CWMM (NCT06143956): * Have type 1 diabetes or type 2 diabetes * Have an ongoing history of bradyarrhythmia and/or sinus bradycardia * Have ...

Countries:United StatesArgentinaAustraliaPuerto RicoJapanSingaporeGermany
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Recent Changes (Last 90 Days)

MEDIUMOct 9, 2026NCT07215559Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMOct 9, 2026NCT07215559Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWOct 8, 2026NCT07589608lastUpdatePostDate: changed
LOWOct 8, 2026NCT07589608lastUpdatePostDate: changed
LOWSep 22, 2026NCT07589608lastUpdatePostDate: changed
LOWSep 22, 2026NCT07589608lastUpdatePostDate: changed
LOWSep 8, 2026NCT07215559lastUpdatePostDate: changed
LOWSep 8, 2026NCT07215559lastUpdatePostDate: changed
LOWAug 21, 2026NCT07215559lastUpdatePostDate: changed
LOWAug 21, 2026NCT07215559lastUpdatePostDate: changed
LOWAug 14, 2026NCT07765511NEW_TRIAL: changed
LOWAug 14, 2026NCT07765511NEW_TRIAL: changed
LOWAug 6, 2026NCT07589608lastUpdatePostDate: changed
LOWAug 6, 2026NCT07589608lastUpdatePostDate: changed

Frequently asked questions about LY3532226

What is LY3532226?

LY3532226 is an investigational small molecule being developed by Eli Lilly and Company for metabolic conditions, including type 1 diabetes, type 2 diabetes, and obesity. It has been studied in Phase 1 clinical trials and is not yet approved for any indication.

What is LY3532226 used for?

LY3532226 is being studied for the treatment of type 1 diabetes mellitus, type 2 diabetes mellitus, and obesity. All clinical testing to date has been in Phase 1 trials, so the drug remains investigational and has no approved use.

Who is developing LY3532226?

LY3532226 is being developed by Eli Lilly and Company, which trades on the New York Stock Exchange under the ticker LLY. Lilly is the sponsor of the Phase 1 studies conducted in participants with obesity, type 1 diabetes, and type 2 diabetes.

What phase is LY3532226 in?

LY3532226 is in Phase 1 clinical development. Three Phase 1 trials have been completed: one in obesity, one in type 1 diabetes, and one in type 2 diabetes. The drug is investigational and has not been approved by the FDA.

What clinical trials is LY3532226 in?

LY3532226 has been evaluated in three completed Phase 1 trials: NCT06557356 in participants with obesity, NCT05887999 in participants with type 1 diabetes, and NCT05407961 in participants with type 2 diabetes. These studies enrolled participants in the United States, Singapore, and Germany.

How many participants were enrolled in LY3532226 trials?

The LY3532226 Phase 1 program enrolled participants across three completed studies. NCT06557356 enrolled 132 participants with obesity, NCT05407961 enrolled 90 participants with type 2 diabetes, and NCT05887999 enrolled 30 participants with type 1 diabetes.