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LY3337641

Phase 1

Healthy | Small molecule | Other |Eli Lilly and Company|Last Updated: Oct 17, 2023

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials3
Total Enrollment71

FDA Designations

No designations recorded

Clinical trial landscape

LY3337641 · 3 trials · 1 indication

Phase 1 3
NCT03099148A Study of LY3337641 in Healthy ParticipantsHealthy
COMPLETED29 Analytics
NCT03083561A Study of LY3337641 in Japanese and Caucasian Healthy ParticipantsHealthy
COMPLETED36 Analytics
NCT02914379A Study of LY3337641 in Healthy Male ParticipantsHealthy
COMPLETED6 Analytics
PHASE1COMPLETED
A Study of LY3337641 in Healthy Participants
HealthyUnlock trial analytics
PHASE1COMPLETED
A Study of LY3337641 in Japanese and Caucasian Healthy Participants
HealthyUnlock trial analytics
PHASE1COMPLETED
A Study of LY3337641 in Healthy Male Participants
HealthyUnlock trial analytics

Study Endpoints

Primary Endpoints

Pharmacokinetics (PK): Maximum Observed Drug Concentration (Cmax) of LY3337641
Period 1,2,3,4 (Day 1): Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48 and 72 hours postdose
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY3337641
Period 1,2,3,4 (Day 1): Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 5, 6, 9, 12, 24, 36, 48 and 72 hours postdose

Pharmacokinetics (PK): Area Under the Concentration versus Time Curve from Time Zero to Infinity (AUC\[0-∞\]) of LY3337641

Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration
Up To 31 Days

Clinically significant events were defined as serious adverse events (SAE). A summary of other nonserious AEs, and all SAE's, regardless of causality, is located in the Reported Adverse Events section.

Urinary Excretion of Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered
Baseline up to 22 days

Urinary excretion samples from each participant were measured by liquid scintillation counting. The radioactive counts detected in urine samples were each divided by the theoretical radioactive count in the total radioactive dose administered and multiplied by 100% to arrive at a percentage of total radioactive dose excreted in urine and feces.

Fecal Excretion of Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered
Baseline up to 22 days

Fecal excretion samples from each participant were measured by liquid scintillation counting. The radioactive counts detected in fecal samples were each divided by the theoretical radioactive count in the total radioactive dose administered and multiplied by 100% to arrive at a percentage of total radioactive dose excreted in feces.

Secondary Endpoints

Pharmacokinetics (PK): Maximum Serum Concentration (Cmax) of LY3337641
MD: Day 1 pre-dose, 0.25,0.5,1,2,3,4,6,8,10,12 and 24 hours post-dose,Day 15 pre-dose,0.25,0.5,1,2,3,4,6,8,10,12,24,36,48,96,168,240 and 336 hours post-dose. SD: pre-dose, 0.25,0.5,1,2,3,4,6,8,10,12,24,36,48,168 and 336 hours post-dose
PK: Area Under the Serum Concentration-Time Curve From Time Zero to 24 Hours (AUC[0-24]) of LY3337641
MD: Day 1 pre-dose, 0.25,0.5,1,2,3,4,6,8,10,12 and 24 hours post-dose,Day 15 pre-dose,0.25,0.5,1,2,3,4,6,8,10,12 and 24 hours post-dose. SD: pre-dose, 0.25,0.5,1,2,3,4,6,8,10,12 and 24 hours post-dose
PK: Area Under the Serum Concentration-Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY3337641
MD: Day 1 pre-dose, 0.25,0.5,1,2,3,4,6,8,10,12 and 24 hours post-dose,Day 15 pre-dose,0.25,0.5,1,2,3,4,6,8,10,12,24,36,48,96,168,240 and 336 hours post-dose. SD: pre-dose, 0.25,0.5,1,2,3,4,6,8,10,12,24,36,48,168 and 336 hours post-dose
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
LY3337641 (R-fasted)EXPERIMENTALA single, PO dose of reference formulation (R) given orally with water after an overnight fast in one of four periods.
LY3337641 (T1-fasted)EXPERIMENTALA single, PO dose of LY3337641(20mg) test formulation 1 (T1) given orally with water after an overnight fast in one of four periods.
LY3337641 (T1-fed)EXPERIMENTALA single, PO dose of LY3337641 (20mg) test formulation 1 (T1) given orally with water after a high fat meal in one of four periods.
LY3337641 (T2-fasted)EXPERIMENTALA single, PO dose of LY3337641 (20 mg) test formulation 2 (T2) given orally with water after an overnight fast in one of four periods.
LY3337641 Multiple DoseEXPERIMENTALMultiple doses of 30 mg LY3337641 tablet administered orally every day for two weeks, with a two week follow-up period.
Placebo Multiple DosePLACEBO_COMPARATORMultiple doses of placebo administered orally every day for two weeks, with a two week follow-up period.
LY3337641 Single DoseEXPERIMENTALSingle dose of 5 mg, 80 mg and 160 mg LY3337641 tablet administered orally, with a two week follow-up period.
Placebo Single DosePLACEBO_COMPARATORSingle dose of placebo administered orally, with a two week follow-up period.
20mg [¹⁴C]-LY3337641EXPERIMENTALParticipants received 20 milligrams (mg) oral dose of LY3337641 containing 120 microcuries of radioactivity.

Interventions

NameTypeDescription
Reference Formulation (R)DRUGAdministered PO
LY3337641 (T1)DRUG20 mg PO
LY3337641 (T2)DRUG20 mg PO
LY3337641DRUGAdministered orally.
PlaceboDRUGAdministered orally.
[¹⁴C]-LY3337641DRUGAdministered orally
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Eligibility Criteria

Age Range21 Years to 65 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria: * Are overtly healthy males or females, as determined by medical history and physical examination * Have a body mass index (BMI) of 18.5 to 32 kilograms per meter squared (kg/m²) inclusive * Have clinical laboratory test results within normal reference range for the population o...

Countries:SingaporeUnited States
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Frequently asked questions about LY3337641

What is LY3337641 used for?

LY3337641 is an investigational small molecule being studied in healthy participants. It is currently in Phase 1 clinical development, with completed trials evaluating its safety, tolerability, and pharmacokinetics in healthy male, Japanese, Caucasian, and other healthy adult participants. It is not approved for any condition.

Who makes LY3337641?

LY3337641 is being developed by Eli Lilly and Company, a pharmaceutical company traded on the NYSE under the ticker symbol LLY. The company has sponsored multiple Phase 1 clinical trials of this investigational small molecule in healthy participants.

What phase is LY3337641 in?

LY3337641 is in Phase 1 clinical development. All three of its clinical trials, which enrolled a total of 71 healthy participants, have been completed. The drug remains investigational and has not been approved by regulatory authorities.

What clinical trials is LY3337641 in?

LY3337641 has been studied in three completed Phase 1 trials: NCT02914379 in healthy male participants in the United States, NCT03083561 in Japanese and Caucasian healthy participants in the United States, and NCT03099148 in healthy participants in Singapore. All trials were randomized, double-blind, and placebo-controlled.

Is LY3337641 FDA approved?

LY3337641 is not FDA approved. It is an investigational drug that has completed Phase 1 clinical trials in healthy participants. These trials were designed to assess safety and tolerability, but the drug has not progressed to later-stage trials or received marketing approval.