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A Study of Tirzepatide (LY3298176) in Chinese Participants With Type 2 Diabetes

A Randomized, Phase 3, Double Blind Trial Comparing the Effect of the Addition of Tirzepatide Versus the Addition of Placebo to Titrated Basal Insulin on Glycemic Control in Chinese Participants With Type 2 Diabetes

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05691712
Acronym
SURPASS-CN-INS
Enrollment
257
Registered
2023-01-20
Start date
2023-02-05
Completion date
2024-07-01
Last updated
2025-08-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetes Mellitus, Diabetes Type 2, Endocrine System Diseases, Glucose Metabolism Disorders, Metabolic Disease

Brief summary

The main purpose of this study is to compare the effect of the addition of tirzepatide or placebo to titrated basal insulin on glycemic control in Chinese participants with type 2 diabetes.

Interventions

DRUGTirzepatide

Administered SC

DRUGPlacebo

Administered SC

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Have type 2 diabetes mellitus (T2DM) * Have HbA1c ≥7.0% (53 mmol/mol) to ≤11% (97 mmol/mol) * Have been treated with insulin glargine (U100) once daily alone, or in combination with metformin with or without SGLT-2i ≥90 days * Have a body mass index (BMI) ≥23 kilograms per meter squared (kg/m²)

Exclusion criteria

* Have type 1 diabetes mellitus (T1DM) * Have a history of chronic or acute pancreatitis * Have proliferative diabetic retinopathy or diabetic macular edema or nonproliferative diabetic retinopathy that requires acute treatment * Have a personal or family history of medullary thyroid carcinoma or personal history of multiple endocrine neoplasia syndrome type 2 * Have a history of severe hypoglycemia and/or hypoglycemia unawareness within the 6 months * Have a history of diabetic ketoacidosis or hyperosmolar state/coma within the 6 months * Have acute myocardial infarction, or cerebrovascular accident (stroke) or hospitalization due to congestive heart failure (CHF) in the past 2 months * Have a serum calcitonin level of ≥35 ng/L, as determined by central laboratory * Have acute or chronic hepatitis, signs, and symptoms of any other liver disease other than nonalcoholic fatty liver disease (NAFLD), or alanine aminotransferase (ALT) level \>3.0 times the upper limit of normal (ULN), as determined by the central laboratory at study entry; participants with NAFLD are eligible for participation in this trial only if their ALT level is ≤3.0 times ULN.

Design outcomes

Primary

MeasureTime frameDescription
Mean Change From Baseline in HbA1c (Tirzepatide 10 or 15 Milligram [mg])Baseline, Week 40HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured primarily to identify average plasma glucose concentration over prolonged periods of time. Least squares (LS) mean was calculated using mixed model repeated measures (MMRM) for post-baseline measures: Variable = Baseline + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured

Secondary

MeasureTime frameDescription
Mean Change From Baseline in Body WeightBaseline, Week 40LSMean was calculated using MMRM for post-baseline measures: Variable = Baseline + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured
Percentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)Week 40HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over prolonged periods of time. The percentage of participants was calculated by dividing the number of participants reaching target HbA1c by the total number of participants analyzed, multiplied by 100. Percentage of Participants with HbA1c \<7.0% (53 millimole/mole \[mmol/mol\]) and ≤6.5% (48 mmol/mol) is reported here.
Mean Change From Baseline in Fasting Serum GlucoseBaseline, Week 40LSMean was calculated using MMRM for post-baseline measures: Variable = Baseline + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured
Percentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 10 mg or 15 mg]Week 40HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over prolonged periods of time. Percentage of participants with HbA1c \<5.7% (39 mmol/Mol) is reported here.
Percentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 5 mg]Week 40HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over prolonged periods of time. Percentage of participants with HbA1c \<5.7% (39 mmol/Mol) is reported here.
Mean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesBaseline, Week 40The SMBG data were collected at the following 7 time points: Morning Premeal - Fasting, Morning 2-hour Post meal, Midday Premeal, Midday 2-hour Post meal, Evening Premeal, Evening 2-hour Post meal and Bedtime. The daily average was calculated as the average of the 7 blood glucose values collected on a particular day. LS Mean was calculated using MMRM for post-baseline measures: Variable = Baseline + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured.
Percentage of Participants Who Achieved Weight Loss of ≥5%Week 40Percentage of Participants who Achieved Weight Loss ≥5% is reported here.
Mean Change From Baseline in HbA1c (Tirzepatide 5 mg)Baseline, Week 40HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured primarily to identify average plasma glucose concentration over prolonged periods of time. LS mean was calculated using MMRM for post-baseline measures: Variable = Baseline + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured
Percentage of Participants Who Achieved Weight Loss of ≥15%Week 40Percentage of Participants who Achieved Weight Loss ≥15% is reported here.
Percent Change From Baseline in Daily Mean Insulin Glargine DoseBaseline, Week 40LS Mean was calculated using MMRM for post-baseline measures: log(Actual Measurement/Baseline) = log(Baseline) + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Change from Baseline) = Unstructured.
Percentage of Participants With HbA1c <7.0%, Without Weight Gain (<0.1 Kilogram [kg]) and Without Hypoglycemia, (Blood Glucose <3.0 mmol/L <54 Milligram/Deciliter [mg/dL])Week 40Percentage of Participants with HbA1c \<7.0%, Without Weight Gain (\<0.1 Kilogram \[kg\]) and Without Hypoglycemia, (Blood Glucose \<3.0 mmol/L \<54 Milligram/Deciliter \[mg/dL\]) is reported here
Percentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.0 mmol/L [54 mg/dL])Week 40Percentage of Participants with HbA1c ≤6.5%, Without Weight Gain \<0.1 kg and Without Hypoglycemia (Blood glucose \<3.0 mmol/L \[54 mg/dL\]) is reported here.
Percentage of Participants With HbA1c <7.0%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)Week 40Percentage of Participants with HbA1c \<7.0%, Without Weight Gain \<0.1 kg and Without Hypoglycemia (Blood Glucose \<3.9 mmol/L \[70 mg/dL\] or Severe Hypoglycemia) is reported here.
Percentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)Week 40Percentage of Participants with HbA1c ≤6.5%, Without Weight Gain \<0.1 kg and Without Hypoglycemia (Blood glucose \<3.9 mmol/L \[70 mg/dL\] or Severe Hypoglycemia) is reported here.
Percentage of Participants Who Achieved Weight Loss of ≥10%Week 40Percentage of Participants who Achieved Weight Loss ≥10% is reported here.

Countries

China

Participant flow

Participants by arm

ArmCount
5 mg Tirzepatide
Participants received 5 mg of tirzepatide administered as SC injection via a SDP QW for 40 weeks. The starting dose of tirzepatide was 2.5 mg QW, which increased by 2.5 mg every 4 weeks until the maintenance dose of 5 mg was reached.
65
10 mg Tirzepatide
Participants received 10 mg of tirzepatide administered as SC injection via a SDP QW for 40 weeks. The starting dose of tirzepatide was 2.5 mg QW, which increased by 2.5 mg every 4 weeks (2.5 mg to 5 mg to 7.5 mg to 10 mg) until the maintenance dose of 10 mg was reached.
65
15 mg Tirzepatide
Participants received 15 mg of tirzepatide administered as SC injection via a SDP QW for 40 weeks. The starting dose of tirzepatide was 2.5 mg QW, which increased by 2.5 mg every 4 weeks (2.5 mg to 5 mg to 7.5 mg to 10 mg to 12.5 mg to 15 mg) until the maintenance dose of 15 mg was reached.
63
Placebo
Participants received tirzepatide matched placebo administered as SC injection via a SDP QW for 40 weeks.
64
Total257

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event0121
Overall StudyAssigned Treatment by Mistake1001
Overall StudyDeath1000
Overall StudyPregnancy0100
Overall StudyWithdrawal by Subject2331

Baseline characteristics

Characteristic5 mg Tirzepatide10 mg Tirzepatide15 mg TirzepatidePlaceboTotal
Age, Continuous58.10 years
STANDARD_DEVIATION 9.97
55.00 years
STANDARD_DEVIATION 11.58
55.80 years
STANDARD_DEVIATION 10.11
58.00 years
STANDARD_DEVIATION 10.24
56.70 years
STANDARD_DEVIATION 10.53
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
65 Participants65 Participants63 Participants64 Participants257 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Percentage of Hemoglobin A1c (HbA1c) at Baseline8.64 Percentage of HbA1c
STANDARD_DEVIATION 0.95
8.60 Percentage of HbA1c
STANDARD_DEVIATION 1.09
8.75 Percentage of HbA1c
STANDARD_DEVIATION 0.99
8.84 Percentage of HbA1c
STANDARD_DEVIATION 0.99
8.71 Percentage of HbA1c
STANDARD_DEVIATION 1.01
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
65 Participants65 Participants63 Participants64 Participants257 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants0 Participants0 Participants
Region of Enrollment
China
65 Participants65 Participants63 Participants64 Participants257 Participants
Sex: Female, Male
Female
23 Participants25 Participants26 Participants25 Participants99 Participants
Sex: Female, Male
Male
42 Participants40 Participants37 Participants39 Participants158 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
1 / 650 / 650 / 630 / 64
other
Total, other adverse events
45 / 6549 / 6549 / 6331 / 64
serious
Total, serious adverse events
8 / 655 / 658 / 637 / 64

Outcome results

Primary

Mean Change From Baseline in HbA1c (Tirzepatide 10 or 15 Milligram [mg])

HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured primarily to identify average plasma glucose concentration over prolonged periods of time. Least squares (LS) mean was calculated using mixed model repeated measures (MMRM) for post-baseline measures: Variable = Baseline + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured

Time frame: Baseline, Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
10 mg TirzepatideMean Change From Baseline in HbA1c (Tirzepatide 10 or 15 Milligram [mg])-26.1 millimoles per mole (mmol/mol)Standard Error 1.367
15 mg TirzepatideMean Change From Baseline in HbA1c (Tirzepatide 10 or 15 Milligram [mg])-25.9 millimoles per mole (mmol/mol)Standard Error 1.386
PlaceboMean Change From Baseline in HbA1c (Tirzepatide 10 or 15 Milligram [mg])-9.96 millimoles per mole (mmol/mol)Standard Error 1.34
p-value: <0.00195% CI: [-19.9, -12.36]Mixed Models Analysis
p-value: <0.00195% CI: [-19.7, -12.1]Mixed Models Analysis
Secondary

Mean Change From Baseline in Body Weight

LSMean was calculated using MMRM for post-baseline measures: Variable = Baseline + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured

Time frame: Baseline, Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
10 mg TirzepatideMean Change From Baseline in Body Weight-2.7 kilograms (kg)Standard Error 0.52
15 mg TirzepatideMean Change From Baseline in Body Weight-4.8 kilograms (kg)Standard Error 0.54
PlaceboMean Change From Baseline in Body Weight-4.3 kilograms (kg)Standard Error 0.55
PlaceboMean Change From Baseline in Body Weight1.7 kilograms (kg)Standard Error 0.53
p-value: <0.00195% CI: [-5.8, -2.9]Mixed Models Analysis
p-value: <0.00195% CI: [-8, -5]Mixed Models Analysis
p-value: <0.00195% CI: [-7.5, -4.5]Mixed Models Analysis
Secondary

Mean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose Profiles

The SMBG data were collected at the following 7 time points: Morning Premeal - Fasting, Morning 2-hour Post meal, Midday Premeal, Midday 2-hour Post meal, Evening Premeal, Evening 2-hour Post meal and Bedtime. The daily average was calculated as the average of the 7 blood glucose values collected on a particular day. LS Mean was calculated using MMRM for post-baseline measures: Variable = Baseline + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured.

Time frame: Baseline, Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
10 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning Premeal - Fasting-2.62 millimoles per liter per day(mmol/L/day)Standard Error 0.127
10 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening 2-hour Postmeal-3.97 millimoles per liter per day(mmol/L/day)Standard Error 0.347
10 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening Premeal-2.84 millimoles per liter per day(mmol/L/day)Standard Error 0.264
10 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning 2-hour Postmeal-4.78 millimoles per liter per day(mmol/L/day)Standard Error 0.3
10 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesBedtime-3.41 millimoles per liter per day(mmol/L/day)Standard Error 0.287
10 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday Premeal-2.87 millimoles per liter per day(mmol/L/day)Standard Error 0.247
10 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday 2-hour Postmeal-4.05 millimoles per liter per day(mmol/L/day)Standard Error 0.318
15 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening 2-hour Postmeal-4.52 millimoles per liter per day(mmol/L/day)Standard Error 0.351
15 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday 2-hour Postmeal-4.10 millimoles per liter per day(mmol/L/day)Standard Error 0.325
15 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday Premeal-3.52 millimoles per liter per day(mmol/L/day)Standard Error 0.258
15 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening Premeal-3.64 millimoles per liter per day(mmol/L/day)Standard Error 0.276
15 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesBedtime-4.19 millimoles per liter per day(mmol/L/day)Standard Error 0.297
15 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning 2-hour Postmeal-5.34 millimoles per liter per day(mmol/L/day)Standard Error 0.306
15 mg TirzepatideMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning Premeal - Fasting-2.53 millimoles per liter per day(mmol/L/day)Standard Error 0.132
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday 2-hour Postmeal-3.65 millimoles per liter per day(mmol/L/day)Standard Error 0.335
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning Premeal - Fasting-2.80 millimoles per liter per day(mmol/L/day)Standard Error 0.136
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning 2-hour Postmeal-5.05 millimoles per liter per day(mmol/L/day)Standard Error 0.313
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday Premeal-3.26 millimoles per liter per day(mmol/L/day)Standard Error 0.263
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening Premeal-3.20 millimoles per liter per day(mmol/L/day)Standard Error 0.285
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening 2-hour Postmeal-4.42 millimoles per liter per day(mmol/L/day)Standard Error 0.367
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesBedtime-3.85 millimoles per liter per day(mmol/L/day)Standard Error 0.307
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday Premeal-1.32 millimoles per liter per day(mmol/L/day)Standard Error 0.253
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesBedtime-1.71 millimoles per liter per day(mmol/L/day)Standard Error 0.298
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening 2-hour Postmeal-1.47 millimoles per liter per day(mmol/L/day)Standard Error 0.346
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning 2-hour Postmeal-2.57 millimoles per liter per day(mmol/L/day)Standard Error 0.3
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMorning Premeal - Fasting-2.22 millimoles per liter per day(mmol/L/day)Standard Error 0.131
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesEvening Premeal-0.95 millimoles per liter per day(mmol/L/day)Standard Error 0.271
PlaceboMean Change From Baseline in Daily Average 7-point Self-monitored Blood Glucose ProfilesMidday 2-hour Postmeal-1.46 millimoles per liter per day(mmol/L/day)Standard Error 0.322
Secondary

Mean Change From Baseline in Fasting Serum Glucose

LSMean was calculated using MMRM for post-baseline measures: Variable = Baseline + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured

Time frame: Baseline, Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
10 mg TirzepatideMean Change From Baseline in Fasting Serum Glucose-45.5 milligram per deciliter (mg/dL)Standard Error 3.73
15 mg TirzepatideMean Change From Baseline in Fasting Serum Glucose-52.5 milligram per deciliter (mg/dL)Standard Error 3.87
PlaceboMean Change From Baseline in Fasting Serum Glucose-51.0 milligram per deciliter (mg/dL)Standard Error 3.94
PlaceboMean Change From Baseline in Fasting Serum Glucose-23.7 milligram per deciliter (mg/dL)Standard Error 3.84
p-value: <0.00195% CI: [-32.4, -11.3]Mixed Models Analysis
p-value: <0.00195% CI: [-39.6, -18.1]Mixed Models Analysis
p-value: <0.00195% CI: [-38.2, -16.5]Mixed Models Analysis
Secondary

Mean Change From Baseline in HbA1c (Tirzepatide 5 mg)

HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured primarily to identify average plasma glucose concentration over prolonged periods of time. LS mean was calculated using MMRM for post-baseline measures: Variable = Baseline + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Actual Value) = Unstructured. Variance-Covariance structure (Change from Baseline) = Unstructured

Time frame: Baseline, Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
10 mg TirzepatideMean Change From Baseline in HbA1c (Tirzepatide 5 mg)-23.0 mmol/molStandard Error 1.329
15 mg TirzepatideMean Change From Baseline in HbA1c (Tirzepatide 5 mg)-9.96 mmol/molStandard Error 1.34
p-value: <0.00195% CI: [-16.8, -9.34]Mixed Models Analysis
Secondary

Percentage of Participants Who Achieved Weight Loss of ≥10%

Percentage of Participants who Achieved Weight Loss ≥10% is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants Who Achieved Weight Loss of ≥10%8.06 percentage of participants
15 mg TirzepatidePercentage of Participants Who Achieved Weight Loss of ≥10%21.05 percentage of participants
PlaceboPercentage of Participants Who Achieved Weight Loss of ≥10%25.45 percentage of participants
PlaceboPercentage of Participants Who Achieved Weight Loss of ≥10%0.00 percentage of participants
Secondary

Percentage of Participants Who Achieved Weight Loss of ≥15%

Percentage of Participants who Achieved Weight Loss ≥15% is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants Who Achieved Weight Loss of ≥15%4.84 percentage of participants
15 mg TirzepatidePercentage of Participants Who Achieved Weight Loss of ≥15%5.26 percentage of participants
PlaceboPercentage of Participants Who Achieved Weight Loss of ≥15%9.09 percentage of participants
PlaceboPercentage of Participants Who Achieved Weight Loss of ≥15%0.00 percentage of participants
Secondary

Percentage of Participants Who Achieved Weight Loss of ≥5%

Percentage of Participants who Achieved Weight Loss ≥5% is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants Who Achieved Weight Loss of ≥5%25.81 percentage of participants
15 mg TirzepatidePercentage of Participants Who Achieved Weight Loss of ≥5%49.12 percentage of participants
PlaceboPercentage of Participants Who Achieved Weight Loss of ≥5%60.00 percentage of participants
PlaceboPercentage of Participants Who Achieved Weight Loss of ≥5%1.72 percentage of participants
Secondary

Percentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 10 mg or 15 mg]

HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over prolonged periods of time. Percentage of participants with HbA1c \<5.7% (39 mmol/Mol) is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 10 mg or 15 mg]17.54 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 10 mg or 15 mg]25.45 percentage of participants
PlaceboPercentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 10 mg or 15 mg]0.00 percentage of participants
Secondary

Percentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 5 mg]

HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over prolonged periods of time. Percentage of participants with HbA1c \<5.7% (39 mmol/Mol) is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 5 mg]9.68 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c <5.7% (39 mmol/Mol) [Tirzepatide 5 mg]0.00 percentage of participants
Secondary

Percentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.0 mmol/L [54 mg/dL])

Percentage of Participants with HbA1c ≤6.5%, Without Weight Gain \<0.1 kg and Without Hypoglycemia (Blood glucose \<3.0 mmol/L \[54 mg/dL\]) is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.0 mmol/L [54 mg/dL])46.77 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.0 mmol/L [54 mg/dL])70.18 percentage of participants
PlaceboPercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.0 mmol/L [54 mg/dL])61.82 percentage of participants
PlaceboPercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.0 mmol/L [54 mg/dL])1.72 percentage of participants
Secondary

Percentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)

Percentage of Participants with HbA1c ≤6.5%, Without Weight Gain \<0.1 kg and Without Hypoglycemia (Blood glucose \<3.9 mmol/L \[70 mg/dL\] or Severe Hypoglycemia) is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)38.71 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)57.89 percentage of participants
PlaceboPercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)43.64 percentage of participants
PlaceboPercentage of Participants With HbA1c ≤6.5%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)1.72 percentage of participants
Secondary

Percentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)

HbA1c is the glycosylated fraction of hemoglobin A. HbA1c is measured to identify average plasma glucose concentration over prolonged periods of time. The percentage of participants was calculated by dividing the number of participants reaching target HbA1c by the total number of participants analyzed, multiplied by 100. Percentage of Participants with HbA1c \<7.0% (53 millimole/mole \[mmol/mol\]) and ≤6.5% (48 mmol/mol) is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureGroupValue (NUMBER)
10 mg TirzepatidePercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c <7.0%75.81 percentage of participants
10 mg TirzepatidePercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c ≤6.5%59.68 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c ≤6.5%77.19 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c <7.0%78.95 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c <7.0%78.18 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c ≤6.5%69.09 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c <7.0%17.24 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0% (53 Millimole/Mole [mmol/Mol]) and ≤6.5% (48 mmol/Mol)HbA1c ≤6.5%6.90 percentage of participants
Secondary

Percentage of Participants With HbA1c <7.0%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)

Percentage of Participants with HbA1c \<7.0%, Without Weight Gain \<0.1 kg and Without Hypoglycemia (Blood Glucose \<3.9 mmol/L \[70 mg/dL\] or Severe Hypoglycemia) is reported here.

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants With HbA1c <7.0%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)51.61 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c <7.0%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)57.89 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)47.27 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0%, Without Weight Gain <0.1 kg and Without Hypoglycemia (Blood Glucose <3.9 mmol/L [70 mg/dL] or Severe Hypoglycemia)5.17 percentage of participants
Secondary

Percentage of Participants With HbA1c <7.0%, Without Weight Gain (<0.1 Kilogram [kg]) and Without Hypoglycemia, (Blood Glucose <3.0 mmol/L <54 Milligram/Deciliter [mg/dL])

Percentage of Participants with HbA1c \<7.0%, Without Weight Gain (\<0.1 Kilogram \[kg\]) and Without Hypoglycemia, (Blood Glucose \<3.0 mmol/L \<54 Milligram/Deciliter \[mg/dL\]) is reported here

Time frame: Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (NUMBER)
10 mg TirzepatidePercentage of Participants With HbA1c <7.0%, Without Weight Gain (<0.1 Kilogram [kg]) and Without Hypoglycemia, (Blood Glucose <3.0 mmol/L <54 Milligram/Deciliter [mg/dL])59.68 percentage of participants
15 mg TirzepatidePercentage of Participants With HbA1c <7.0%, Without Weight Gain (<0.1 Kilogram [kg]) and Without Hypoglycemia, (Blood Glucose <3.0 mmol/L <54 Milligram/Deciliter [mg/dL])70.18 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0%, Without Weight Gain (<0.1 Kilogram [kg]) and Without Hypoglycemia, (Blood Glucose <3.0 mmol/L <54 Milligram/Deciliter [mg/dL])67.27 percentage of participants
PlaceboPercentage of Participants With HbA1c <7.0%, Without Weight Gain (<0.1 Kilogram [kg]) and Without Hypoglycemia, (Blood Glucose <3.0 mmol/L <54 Milligram/Deciliter [mg/dL])5.17 percentage of participants
Secondary

Percent Change From Baseline in Daily Mean Insulin Glargine Dose

LS Mean was calculated using MMRM for post-baseline measures: log(Actual Measurement/Baseline) = log(Baseline) + Baseline HbA1c (\<=8.0%, \>8.0%) + SGLT2i Use (Yes/No) + Treatment + Time + Treatment\*Time (Type III sum of squares). Variance-Covariance structure (Change from Baseline) = Unstructured.

Time frame: Baseline, Week 40

Population: All randomized participants who received at least one dose of study drug with baseline and post-baseline value at the specified time point for this outcome excluding participants discontinuing study drug due to inadvertent enrollment and data after permanent discontinuation of study drug or initiation of rescue medication.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
10 mg TirzepatidePercent Change From Baseline in Daily Mean Insulin Glargine Dose23.90 percent changeStandard Error 6.424
15 mg TirzepatidePercent Change From Baseline in Daily Mean Insulin Glargine Dose21.95 percent changeStandard Error 6.471
PlaceboPercent Change From Baseline in Daily Mean Insulin Glargine Dose18.21 percent changeStandard Error 6.364
PlaceboPercent Change From Baseline in Daily Mean Insulin Glargine Dose69.28 percent changeStandard Error 8.826

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026