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Insulin Efsitora Alfa

Phase 3

Diabetes | Small molecule | Metabolic |Eli Lilly and Company|Last Updated: Aug 6, 2025

Success Probability

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Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment928

FDA Designations

No designations recorded

Clinical trial landscape

Insulin Efsitora Alfa · 5 trials · 5 indications

Phase 3 5
NCT05662332A Study of Insulin Efsitora Alfa (LY3209590) Compared to Glargine in Adult Participants With Type 2 Diabetes Who Are Starting Basal Insulin for the First Time (QWINT-1)Type 2 Diabetes
COMPLETED795 Analytics
NCT05463744A Study of Insulin Efsitora Alfa (LY3209590) Compared With Insulin Degludec in Participants With Type 1 Diabetes Treated With Multiple Daily Injection TherapyType 1 Diabetes
COMPLETED692 Analytics
NCT05462756A Study of Insulin Efsitora Alfa (LY3209590) as a Weekly Basal Insulin Compared to Insulin Glargine in Adult Participants With Type 2 Diabetes on Multiple Daily InjectionsType 2 Diabetes
COMPLETED730 Analytics
NCT05362058A Study of Insulin Efsitora Alfa (LY3209590) Compared to Degludec in Adults With Type 2 Diabetes Who Are Starting Basal Insulin for the First TimeDiabetes
COMPLETED928 Analytics
NCT05275400A Study of Insulin Efsitora Alfa (LY3209590) Compared With Insulin Degludec in Participants With Type 2 Diabetes Currently Treated With Basal InsulinType 2 Diabetes
COMPLETED986 Analytics
PHASE3COMPLETED
A Study of Insulin Efsitora Alfa (LY3209590) Compared to Glargine in Adult Participants With Type 2 Diabetes Who Are Starting Basal Insulin for the First Time (QWINT-1)
Type 2 DiabetesUnlock trial analytics
PHASE3COMPLETED
A Study of Insulin Efsitora Alfa (LY3209590) Compared With Insulin Degludec in Participants With Type 1 Diabetes Treated With Multiple Daily Injection Therapy
Type 1 DiabetesUnlock trial analytics
PHASE3COMPLETED
A Study of Insulin Efsitora Alfa (LY3209590) as a Weekly Basal Insulin Compared to Insulin Glargine in Adult Participants With Type 2 Diabetes on Multiple Daily Injections
Type 2 DiabetesUnlock trial analytics
PHASE3COMPLETED
A Study of Insulin Efsitora Alfa (LY3209590) Compared to Degludec in Adults With Type 2 Diabetes Who Are Starting Basal Insulin for the First Time
DiabetesUnlock trial analytics
PHASE3COMPLETED
A Study of Insulin Efsitora Alfa (LY3209590) Compared With Insulin Degludec in Participants With Type 2 Diabetes Currently Treated With Basal Insulin
Type 2 DiabetesUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline in Hemoglobin A1c (HbA1c) [Noninferiority Analysis]
Baseline, Week 52

HbA1c is the glycated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over the last 2-3 months. Least Squares (LS) Mean was determined using ANCOVA model with Baseline + Country + GLP-1 RA Use at Randomization Flag + Treatment (Type III sum of squares) as variables. Missing data at Week 52 were imputed by return-to-baseline multiple imputation approach.

Change From Baseline in Hemoglobin A1c (HbA1c) at Week 26 [Noninferiority Analysis]
Baseline, Week 26

HbA1c is the glycosylated fraction of hemoglobin A. It is measured primarily to identify the average plasma glucose concentration over prolonged periods of time. Least Squares (LS) mean was determined using Analysis of Covariance (ANCOVA) model with treatment + country + CGM use prior to study entry \[yes/no\]+ carbohydrate counting for prandial insulin\[yes/no\] + baseline value of the dependent variable (Type III sum of squares) as variables. Missing data at Week 26 were imputed by return-to-baseline multiple imputations approach.

Change From Baseline in Hemoglobin A1c (HbA1c) [Noninferiority]
Baseline, Week 26

HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over prolonged periods of time.

Change From Baseline in HbA1c at Week 52 [Noninferiority Analysis]
Baseline, Week 52

* HbA1c is the glycosylated fraction of hemoglobin A. It is measured to identify average plasma glucose concentration over prolonged periods of time. * Least Squares (LS) mean was determined using Analysis of Covariance (ANCOVA) model with Baseline + Country + GLP-1 RA Use at Randomization Flag + SU Use at Randomization Flag + Treatment (Type III sum of squares) as variables. Missing data at Week 52 were imputed by return-to-baseline multiple imputations approach.

Secondary Endpoints

Change From Baseline in HbA1c [Superiority]
Baseline, Week 52
Change From Baseline in Fasting Glucose
Baseline, Week 52
Basal Insulin Dose at Week 52
Week 52
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Insulin Efsitora AlfaEXPERIMENTALParticipants received Insulin Efsitora Alfa (insulin efsitora; 500 U/ml) administered subcutaneously (SC) once weekly (QW) for 52 weeks, with titration using fixed-doses 100 U, 150 U, 250 U, and 400 U.
Insulin GlargineACTIVE_COMPARATORParticipants received insulin glargine (100 U/ml) administered SC once daily (QD) for 52 weeks with titration by standard sliding-scale dose adjustments.
Insulin DegludecACTIVE_COMPARATORParticipants who were treated with prestudy basal insulin and prandial insulin therapy (100 U/mL Insulin Lispro) received 100 U/mL of Insulin Degludec administered once daily (QD) for 52 weeks as subcutaneous injection, followed by a 5-week safety follow-up.
500 U/mL - Insulin EfsitoraEXPERIMENTALParticipants received 500 units per milliliter (U/mL) Insulin Efsitora Alfa (insulin efsitora) administered subcutaneously (SC) once weekly (QW) along with 100 U/mL insulin lispro given SC with meals as needed.
100 U/mL - Insulin GlargineACTIVE_COMPARATORParticipants received 100 U/mL insulin glargine administered SC once daily (QD) along with 100 U/mL insulin lispro given SC with meals as needed.
500 U/mL - Insulin Efsitora AlfaEXPERIMENTAL* Participants received 500 units per milliliter (U/mL) of insulin efsitora alfa administered subcutaneously (SC) once weekly (QW) over a 52-week treatment period, followed by a 5-week safety follow-up period. * Participants continued their protocol-specified stable therapy with non-insulin antihyperglycemic medications throughout the study, at the discretion of the investigator.
100 U/mL - Insulin DegludecACTIVE_COMPARATOR* Participants received 100 U/mL insulin degludec administered SC once daily (QD) over a 52-week treatment period, followed by a 5-week safety follow-up period. * Participants continued their protocol-specified stable therapy with non-insulin antihyperglycemic medications throughout the study, at the discretion of the investigator.

Interventions

NameTypeDescription
Insulin Efsitora AlfaDRUGAdministered SC
Insulin GlargineDRUGAdministered SC
Insulin DegludecDRUGAdministered SC
Insulin Lispro (U100)DRUGAdministered SC
Insulin Glargine (U100)DRUGAdministered SC
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites71

Inclusion Criteria: * Have a diagnosis of T2D according to the World Health Organization criteria. * Have an HbA1c of 7.0% to 10.0%, inclusive, at screening. * Are on a stable treatment of at least 1 antihyperglycemic medication, for at least 3 months prior to screening, and willing to continue the...

Countries:United StatesArgentinaMexicoPuerto RicoJapanPolandSlovakiaTaiwanGermanyIndiaItalySpainBrazilCanadaChinaCzechiaGreeceSouth KoreaHungary
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Competitive Landscape -Diabetes Complications 6 trials (matched to "Diabetes")