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LY3537031

Phase 3

Alcohol Use Disorder | Small molecule | Psychiatry |Eli Lilly and Company|Trials Updated: Oct 8, 2026

LY3537031 development status

Highest phase Phase 3
Registered trials 18 across 1 sponsor since Dec 2020

LY3537031 target and mechanism

ModalitySmall molecule

Also known as Brenipatide

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials15
Total Enrollment8,230

FDA Designations

No designations recorded

LY3537031 clinical trials

LY3537031 · 15 trials · 17 indications

Phase 3 4Phase 2 8Phase 1 3
NCT07775300A Study of Brenipatide (LY3537031) in Adult Participants With Major Depressive DisorderDepressive Disorder, Major
RECRUITING1,000 Analytics
NCT07412756A Study of Brenipatide in Adult Participants With Major Depressive DisorderDepressive Disorder, Major
RECRUITING1,000 Analytics
NCT07219953A Study of Brenipatide in Participants With Alcohol Use DisorderAlcohol Use Disorder
RECRUITING1,100 Analytics
NCT07219966A Study of Brenipatide in Participants With Moderate-to-Severe Alcohol Use DisorderAlcohol Use Disorder
RECRUITING1,100 Analytics
PHASE3RECRUITING
A Study of Brenipatide (LY3537031) in Adult Participants With Major Depressive Disorder
Depressive Disorder, MajorUnlock trial analytics
PHASE3RECRUITING
A Study of Brenipatide in Adult Participants With Major Depressive Disorder
Depressive Disorder, MajorUnlock trial analytics
PHASE3RECRUITING
A Study of Brenipatide in Participants With Alcohol Use Disorder
Alcohol Use DisorderUnlock trial analytics
PHASE3RECRUITING
A Study of Brenipatide in Participants With Moderate-to-Severe Alcohol Use Disorder
Alcohol Use DisorderUnlock trial analytics

Study Endpoints

Primary Endpoints

Time to Relapse Defined as the Number of Days from Randomization to Date on Which the Participant Meets Any Relapse Criterion of Major Depressive Disorder (MDD)
From Randomization in Double-Blind Adjunctive Treatment to First Relapse For at Least 12 Months
Change in Drinking Patterns in Alcohol Use Disorder (AUD) as Assessed by the Timeline Followback Method (TLFB)
Up to 56 weeks
Change from Baseline in Pre-Bronchodilator (BD) Forced Expiratory Volume in 1 Second (FEV₁)
Baseline through Week 36
Percentage of Participants Who Had a Daily Composite Response for at Least 50 Percent (%) of Days
Week 9 to Week 16
Percentage of Participants with a Weekly Composite Clinical Response for at Least 50 Percent (%) of Weeks
Week 9 to 16
Percentage of Weeks of Abstinence from Opioid Use Defined by Both Negative Urine Drug Screen (UDS) and no Self-Report of Opioid use Based on Timeline Followback (TLFB)
Week 13 up to Week 24
Achievement of ≥80% Weeks of Abstinence from Opioid Use Defined by Both Negative UDS and no Self-Report of Opioid Use Based on TLFB
Week 13 up to Week 24
Percent Change from Baseline in Body Weight in Participants with a Baseline Body Mass Index ≥25.0 Kilograms per Meter Squared (kg/m²)
Baseline, Week 52
Time to Relapse Defined as Days from Randomization to the Date on Which the Participant Meets Any Relapse Criterion
Randomization up to at least 6 months
Percentage of Participants that Achieve Carbon Monoxide (CO)-Confirmed Continuous Abstinence from Cigarette Smoking with Allowed Slips
Week 1 to Week 24
Annualized Asthma Exacerbation Rate Over 52 Weeks of Treatment
Baseline to Week 52

To assess the asthma exacerbation rate.

Percent Change in Body Weight
Week 1, Week 29
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve (AUC) of LY3537031
Predose on day 1 up to week 8 post dose

PK: AUC of LY3537031

PK: Maximum Concentration (Cmax) of LY3537031
Predose on day 1 up to week 8 post dose

PK: Cmax of LY3537031

Number of Participants with One or More Treatment Emergent Adverse Events (TEAEs), Serious Adverse Event(s) (SAEs), and Adverse Event(s) (AEs) Considered by the Investigator to be Related to Study Drug Administration
Baseline to Study Completion (Up to 56 Weeks)

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

Secondary Endpoints

Mean Percent Change from Baseline in Body Weight in Participants with a Baseline Body Mass Index (BMI) ≥ 25.0 kg/m^2
Baseline, up to at least 6 months
Change from Baseline in Montgomery-Åsberg Depression Rating Scale (MADRS) Total Score
Baseline, up to at least 6 months
Change from Baseline in Sheehan Disability Scale (SDS) Global Functional Impairment Score
Baseline, up to at least 6 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Brenipatide Dose 1EXPERIMENTALBrenipatide administered subcutaneous (SC) + standard of care (SoC).
Brenipatide Dose 2EXPERIMENTALBrenipatide administered SC + SoC.
Brenipatide Dose 3EXPERIMENTALBrenipatide administered SC + SoC.
PlaceboPLACEBO_COMPARATORPlacebo administered SC + SoC.
LY3537031 Period 1EXPERIMENTALEscalating doses administered subcutaneously (SC)
LY3537031 Period 2EXPERIMENTALAdministered SC
LY3537031EXPERIMENTALLY3537031 administered subcutaneously (SC)
Part A and Part B: Brenipatide + Buprenorphine Dose 1EXPERIMENTALPart A: Brenipatide administered subcutaneously (SC) + Buprenorphine administered sublingual or buccal. Part B: Open-label Treatment: Participants will receive Brenipatide SC + Buprenorphine sublingual or buccal.
Part A: Brenipatide + Buprenorphine Dose 2EXPERIMENTALBrenipatide administered SC + Buprenorphine administered sublingual or buccal.
Part A: Brenipatide + Buprenorphine Dose 3EXPERIMENTALBrenipatide administered SC + Buprenorphine administered sublingual or buccal.
Part A: Placebo + BuprenorphinePLACEBO_COMPARATORPlacebo administered SC + Buprenorphine administered sublingual or buccal.
BrenipatideEXPERIMENTALBrenipatide administered subcutaneously (SC) + SoC.
Brenipatide Dose 2 .EXPERIMENTALBrenipatide administered subcutaneous (SC) + SoC.
LY3537031 (Group 1)EXPERIMENTALLY3537031 administered subcutaneously (SC) in a control group of participants with normal renal function
LY3537031 (Groups 2-3)EXPERIMENTALLY3537031 administered SC in groups of participants with impaired renal function
LY3537031 (Group 3)EXPERIMENTALLY3537031 administered SC in a group of participants with end-stage renal disease (ESRD) on hemodialysis
LY3537031 Part A (Cohorts 1-7)EXPERIMENTALMultiple-ascending doses of LY3537031 administered subcutaneously (SC)
Placebo Part APLACEBO_COMPARATORPlacebo administered SC
LY3537031 Part B (Cohorts 8-11)EXPERIMENTALMultiple-ascending doses of LY3537031 administered SC
Placebo Part BPLACEBO_COMPARATORPlacebo administered SC
LY3537031 Part C (Cohorts 12-15)EXPERIMENTALMultiple-ascending doses of LY3537031 administered SC
Placebo Part CPLACEBO_COMPARATORPlacebo administered SC
LY3537031 Part D (Cohorts 16-19)EXPERIMENTALMultiple-ascending doses of LY3537031 administered SC
Placebo Part DPLACEBO_COMPARATORPlacebo administered SC

Interventions

NameTypeDescription
BrenipatideDRUGAdministered SC.
PlaceboDRUGAdministered SC.
LY3537031DRUGAdministered SC
Standard of CareDRUGSOC
BuprenorphineDRUGAdministered sublingual or buccal
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites170

Inclusion Criteria: * Meet the diagnostic criteria for major depressive disorder * Are on stable standard of care medication for major depressive disorder * Are reliable and willing to make themselves available for the duration of the study and attend required study visits, and are willing and able...

Countries:United StatesAustraliaBrazilCanadaChinaGermanyGreeceJapanMexicoPolandPuerto RicoSouth KoreaSpainTaiwanUnited KingdomBelgiumArgentinaAustriaCzechiaDenmarkFranceHungaryIndiaRomaniaNetherlandsNew Zealand
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Recent Changes (Last 90 Days)

LOWOct 8, 2026NCT07759245lastUpdatePostDate: changed
LOWOct 8, 2026NCT07545759lastUpdatePostDate: changed
LOWOct 8, 2026NCT07545772lastUpdatePostDate: changed
LOWOct 8, 2026NCT07219953lastUpdatePostDate: changed
LOWOct 8, 2026NCT07219173lastUpdatePostDate: changed
LOWOct 8, 2026NCT07759245lastUpdatePostDate: changed
LOWOct 8, 2026NCT07545759lastUpdatePostDate: changed
LOWOct 8, 2026NCT07545772lastUpdatePostDate: changed
LOWOct 8, 2026NCT07219953lastUpdatePostDate: changed
LOWOct 8, 2026NCT07219173lastUpdatePostDate: changed
LOWOct 7, 2026NCT07775300lastUpdatePostDate: changed
LOWOct 7, 2026NCT07410507lastUpdatePostDate: changed
LOWOct 7, 2026NCT07286175lastUpdatePostDate: changed
LOWOct 7, 2026NCT07219966lastUpdatePostDate: changed
LOWOct 7, 2026NCT07420283lastUpdatePostDate: changed
LOWOct 7, 2026NCT07775300lastUpdatePostDate: changed
LOWOct 7, 2026NCT07410507lastUpdatePostDate: changed
LOWOct 7, 2026NCT07219966lastUpdatePostDate: changed
LOWOct 7, 2026NCT07420283lastUpdatePostDate: changed
LOWOct 7, 2026NCT07286175lastUpdatePostDate: changed

Frequently asked questions about LY3537031

What is LY3537031?

LY3537031, also known as brenipatide, is an investigational small molecule being developed by Eli Lilly and Company. It is in clinical development for alcohol use disorder, irritable bowel syndrome, end stage renal disease, and overweight. It has not been approved by the FDA and remains under study in Phase 2 and Phase 3 trials.

What is LY3537031 used for?

LY3537031 is being studied for alcohol use disorder, irritable bowel syndrome including constipation and diarrhea subtypes, end stage renal disease, and overweight. The most advanced program is in alcohol use disorder, where two Phase 3 trials are recruiting participants. The irritable bowel syndrome studies are in Phase 2.

Who makes LY3537031?

LY3537031 is developed by Eli Lilly and Company, which trades on the New York Stock Exchange under the ticker LLY. Lilly is running the clinical program for the drug, including the Phase 3 alcohol use disorder trials and the Phase 2 irritable bowel syndrome trials.

What phase is LY3537031 in?

LY3537031 is in Phase 3 development for alcohol use disorder and Phase 2 development for irritable bowel syndrome. It is an investigational drug and has not been approved by the FDA. Two Phase 3 trials and two Phase 2 trials are currently recruiting, with total planned enrollment of about 3,073 participants across the program.

What clinical trials is LY3537031 in?

LY3537031 is being studied in four recruiting trials. NCT07219966 and NCT07219953 are Phase 3 trials in moderate-to-severe and general alcohol use disorder, each enrolling 1,100 participants. NCT07545772 is a Phase 2 trial in irritable bowel syndrome with constipation, and NCT07545759 is a Phase 2 trial in irritable bowel syndrome with diarrhea.

Is LY3537031 the same as brenipatide?

Yes, LY3537031 and brenipatide refer to the same investigational drug. Brenipatide is the alternate name used in trial titles, including the Phase 3 alcohol use disorder studies and the Phase 2 irritable bowel syndrome studies. Both names identify the same Eli Lilly small molecule in clinical development.