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LY3522348

Phase 1

Healthy | Small molecule | Other |Eli Lilly and Company|Last Updated: Nov 4, 2025

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_CONTROLLEDBiomarker
Total Trials1
Total Enrollment65
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04559568A Study of LY3522348 in Healthy ParticipantsPHASE1 COMPLETED 65Oct 15, 2020Aug 17, 2021Nov 4, 20251 United States
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Study Endpoints
Primary Endpoints
Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration
Part A: Baseline up to Day 14; Part B: Baseline up to Day 28

An SAE is any untoward medical occurrence temporally associated with the use of study intervention that results in death is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, is a congenital anomaly/birth defect or any other situation as determined by investigator. The number of participants with one or more SAEs considered by the investigator to be related to study drug administration is reported here. A summary of SAEs and other non-serious adverse events, regardless of causality, will be reported in the Reported Adverse Events module.

Secondary Endpoints
Part A Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to the Last Time Point With a Measurable Concentration (AUC(0-tlast)) of LY3522348
Day 1 (Predose, 0.75, 1.5, 3, 4, 6, 8, 10, 12, 16, 24, 48, 72, 96, 144 hours post Day 1 dose)
Part B PK: Area Under the Concentration Versus Time Curve From Time Zero to the Last Time Point With a Measurable Concentration (AUC(0-tlast)) of LY3522348
Day 1 (Predose, 0.75, 1.5, 3, 4, 6, 8, 12, 16, 24 hours post Day 1 dose); Day 14 (Predose, 0.75, 1.5, 3, 4, 6, 8, 12, 16, 24, 48, 72, 96, 144 hours post Day 14 dose)
Part A PK: Maximum Observed Drug Concentration (Cmax) of LY3522348
Day 1 (Predose, 0.75, 1.5, 3, 4, 6, 8, 10, 12, 16, 24, 48, 72, 96, 144 hours post Day 1 dose)
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelSEQUENTIAL
PurposeBASIC_SCIENCE
Treatment Arms
ArmTypeDescription
Part A: PlaceboPLACEBO_COMPARATORA single dose of Placebo administered orally on Day 1.
Part A: 5 milligrams (mg) LY3522348EXPERIMENTALA single dose of 5 mg LY3522348 administered orally on Day 1.
Part A: 15 mg LY3522348EXPERIMENTALA single dose of 15 mg LY3522348 administered orally on Day 1.
Part A: 50 mg LY3522348EXPERIMENTALA single dose of 50 mg LY3522348 administered orally on Day 1.
Part A: 150 mg LY3522348EXPERIMENTALA single dose of 150 mg LY3522348 administered orally on Day 1.
Part A: 380 mg LY3522348EXPERIMENTALA single dose of 380 mg LY3522348 administered orally on Day 1.
Part B: PlaceboPLACEBO_COMPARATORPlacebo administered orally once daily on Days 1-14.
Part B: Placebo + MidazolamEXPERIMENTALPlacebo administered orally once daily on Days 1-15 and a single dose of 200 micrograms (μg) Midazolam administered orally on Days -1 and 15.
Part B: 50 mg LY3522348EXPERIMENTAL50 mg LY3522348 administered orally once daily on Days 1-14.
Part B: 120 mg LY3522348EXPERIMENTAL120 mg LY3522348 administered orally once daily on Days 1-14.
Part B: 290 mg LY3522348 + MidazolamEXPERIMENTAL290 mg LY3522348 administered orally once daily on Days 1-15 and a single dose of 200 μg Midazolam administered orally on Days -1 and 15.
Interventions
NameTypeDescription
LY3522348DRUGAdministered orally.
PlaceboDRUGAdministered orally.
MidazolamDRUGAdministered orally.
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Are overtly healthy as determined through medical evaluation including medical history and physical examination * Have a body mass index of greater than or equal to (≥)18.5 and less than or equal to (≤)40 kilograms per square meter (kg/m²) * Have had a stable weight for one mo...

Countries:United States
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