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

A Multiple-Ascending Dose Study in Japanese Patients With Type 2 Diabetes Mellitus to Investigate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of LY3298176

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03322631
Enrollment
48
Registered
2017-10-26
Start date
2017-11-15
Completion date
2018-11-28
Last updated
2023-03-23

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

Conditions

Type 2 Diabetes Mellitus

Brief summary

The purposes of this study are to determine: * The safety of tirzepatide and any side effects that might be associated with it. * How much tirzepatide gets into the bloodstream and how long it takes the body to remove it. * How tirzepatide affects the levels of blood sugar. This study includes eight weekly doses of tirzepatide or placebo given as subcutaneous (SC) injections just under the skin. The study will last about 16 weeks (total), including screening and follow-up. This study is for research purposes only and is not intended to treat any medical conditions.

Interventions

DRUGTirzepatide

Administered SC.

DRUGPlacebo

Administered SC.

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
20 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Have T2DM controlled with diet and exercise alone or are stable on a single oral antidiabetic medication (metformin or dipeptidyl peptidase \[DPP\]-IV inhibitors) * Have a body mass index of 20.0 to 35.0 kilograms per square meter, inclusive

Exclusion criteria

* Have known allergies to tirzepatide, glucagon-like peptide (GLP)-1 analogs, or related compounds * Have had more than 1 episode of severe hypoglycemia, as defined by the American Diabetes Association criteria, within 6 months before entry into the study or has a history of hypoglycemia unawareness or poor recognition of hypoglycemic symptoms * Have an abnormality in the 12-lead electrocardiogram at screening that, in the opinion of the investigator, increases the risks associated with participating in the study * Have a history or presence of pancreatitis or gastrointestinal (GI) disorder or any GI disease which impacts gastric emptying or could be aggravated by GLP-1 analogs or DPP-IV inhibitors

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug AdministrationBaseline through Day 85Safety was assessed from time of consent through end of study (up to 85 days). Data presented are the number of participants who experienced 1 or more SAEs considered by the investigator to be related to study drug. A summary of SAEs and other non-serious AEs, regardless of causality is located in the Reported Adverse Events section of this record.

Secondary

MeasureTime frameDescription
Pharmacokinetics (PK): Maximum Observed Concentration (Cmax) of TirzepatidePredose, 8, 24, 48, 72 and 168 hours post dose for Day 1 administration, and Predose, 8, 24, 48, and 168 hours post dose for Day 50 administrationPharmacokinetics (PK): Maximum observed drug concentration (Cmax) of Tirzepatide in plasma.
PK: Area Under the Concentration Versus Time Curve (AUC) of TirzepatidePredose, 8, 24, 48, 72 and 168 hours post dose for Day 1 administration, and Predose, 8, 24, 48, and 168 hours post dose for Day 50 administrationArea under the concentration versus time curve from time zero to tau (τ) of Tirzepatide (AUC\[0- τ\]), where tau is dosing interval of (0-168 hours).
Pharmacodynamics (PD): Change From Baseline to 8 Weeks in Fasting Plasma GlucoseBaseline, Week 8Change from baseline to 8 weeks in Fasting Plasma Glucose was measured to investigate the PD effect of Tirzepatide after multiple SC doses administered to Japanese patients with T2DM

Countries

Japan

Participant flow

Participants by arm

ArmCount
Placebo
Participants received placebo administered into the subcutaneous (SC) tissue of the abdominal wall.
9
2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)
Participants received tirzepatide with titration regimen starting from 2.5 mg (milligrams) for Days 1 and 8 followed by 5 mg for Days 15 and 22, and 10 mg for Days 29, 36, 43, and 50 administered into the SC tissue of the abdominal wall.
12
5 mg/10 mg/15 mg Tirzepatide (Cohort 2)
Participants received tirzepatide with titration regimen starting from 5 mg for Days 1 and 8 followed by 10 mg for Days 15, 22, 29, and 36, and 15 mg for Days 43 and 50 administered into the SC tissue of the abdominal wall.
16
5 mg Tirzepatide (Cohort 3)
Participants received 5 mg tirzepatide administered into the SC tissue of the abdominal wall.
11
Total48

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event0010
Overall StudyWithdrawal by Subject0100

Baseline characteristics

Characteristic5 mg Tirzepatide (Cohort 3)TotalPlacebo2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)5 mg/10 mg/15 mg Tirzepatide (Cohort 2)
Age, Continuous57.5 Years
STANDARD_DEVIATION 7.9
57.4 Years
STANDARD_DEVIATION 8.8
57.4 Years
STANDARD_DEVIATION 11.6
56.9 Years
STANDARD_DEVIATION 9.5
57.7 Years
STANDARD_DEVIATION 8
Body Mass Index (BMI)26.68 kg/m²
STANDARD_DEVIATION 3.29
25.42 kg/m²
STANDARD_DEVIATION 3.16
22.58 kg/m²
STANDARD_DEVIATION 2.09
25.49 kg/m²
STANDARD_DEVIATION 2.75
26.10 kg/m²
STANDARD_DEVIATION 3.11
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
11 Participants48 Participants9 Participants12 Participants16 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
11 Participants48 Participants9 Participants12 Participants16 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
Japan
11 Participants48 Participants9 Participants12 Participants16 Participants
Sex: Female, Male
Female
0 Participants1 Participants0 Participants0 Participants1 Participants
Sex: Female, Male
Male
11 Participants47 Participants9 Participants12 Participants15 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
0 / 90 / 120 / 160 / 11
other
Total, other adverse events
4 / 911 / 1215 / 166 / 11
serious
Total, serious adverse events
0 / 90 / 120 / 160 / 11

Outcome results

Primary

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

Safety was assessed from time of consent through end of study (up to 85 days). Data presented are the number of participants who experienced 1 or more SAEs considered by the investigator to be related to study drug. A summary of SAEs and other non-serious AEs, regardless of causality is located in the Reported Adverse Events section of this record.

Time frame: Baseline through Day 85

Population: All randomized participants who received at least one dose of study drug.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
5 mg/10 mg/15 mg Tirzepatide (Cohort 2)Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
5 mg Tirzepatide (Cohort 3)Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
Secondary

Pharmacodynamics (PD): Change From Baseline to 8 Weeks in Fasting Plasma Glucose

Change from baseline to 8 weeks in Fasting Plasma Glucose was measured to investigate the PD effect of Tirzepatide after multiple SC doses administered to Japanese patients with T2DM

Time frame: Baseline, Week 8

Population: All randomized participants who received at least one dose of drug and have evaluable PK data.

ArmMeasureValue (MEAN)Dispersion
PlaceboPharmacodynamics (PD): Change From Baseline to 8 Weeks in Fasting Plasma Glucose-4.0 milligram per deciliter (mg/dL)Standard Deviation 23.7
2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)Pharmacodynamics (PD): Change From Baseline to 8 Weeks in Fasting Plasma Glucose-77.5 milligram per deciliter (mg/dL)Standard Deviation 24.2
5 mg/10 mg/15 mg Tirzepatide (Cohort 2)Pharmacodynamics (PD): Change From Baseline to 8 Weeks in Fasting Plasma Glucose-72.6 milligram per deciliter (mg/dL)Standard Deviation 30.9
5 mg Tirzepatide (Cohort 3)Pharmacodynamics (PD): Change From Baseline to 8 Weeks in Fasting Plasma Glucose-51.7 milligram per deciliter (mg/dL)Standard Deviation 28.9
Secondary

Pharmacokinetics (PK): Maximum Observed Concentration (Cmax) of Tirzepatide

Pharmacokinetics (PK): Maximum observed drug concentration (Cmax) of Tirzepatide in plasma.

Time frame: Predose, 8, 24, 48, 72 and 168 hours post dose for Day 1 administration, and Predose, 8, 24, 48, and 168 hours post dose for Day 50 administration

Population: All randomized participants who received at least one dose of study drug and have evaluable PK data.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
PlaceboPharmacokinetics (PK): Maximum Observed Concentration (Cmax) of TirzepatideDay 1215 nanograms per milliliter (ng/mL)Geometric Coefficient of Variation 18
PlaceboPharmacokinetics (PK): Maximum Observed Concentration (Cmax) of TirzepatideDay 501520 nanograms per milliliter (ng/mL)Geometric Coefficient of Variation 15
2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)Pharmacokinetics (PK): Maximum Observed Concentration (Cmax) of TirzepatideDay 502270 nanograms per milliliter (ng/mL)Geometric Coefficient of Variation 17
2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)Pharmacokinetics (PK): Maximum Observed Concentration (Cmax) of TirzepatideDay 1442 nanograms per milliliter (ng/mL)Geometric Coefficient of Variation 23
5 mg/10 mg/15 mg Tirzepatide (Cohort 2)Pharmacokinetics (PK): Maximum Observed Concentration (Cmax) of TirzepatideDay 50838 nanograms per milliliter (ng/mL)Geometric Coefficient of Variation 22
5 mg/10 mg/15 mg Tirzepatide (Cohort 2)Pharmacokinetics (PK): Maximum Observed Concentration (Cmax) of TirzepatideDay 1364 nanograms per milliliter (ng/mL)Geometric Coefficient of Variation 20
Secondary

PK: Area Under the Concentration Versus Time Curve (AUC) of Tirzepatide

Area under the concentration versus time curve from time zero to tau (τ) of Tirzepatide (AUC\[0- τ\]), where tau is dosing interval of (0-168 hours).

Time frame: Predose, 8, 24, 48, 72 and 168 hours post dose for Day 1 administration, and Predose, 8, 24, 48, and 168 hours post dose for Day 50 administration

Population: All randomized participants who received at least one dose of study drug and have evaluable PK data.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
PlaceboPK: Area Under the Concentration Versus Time Curve (AUC) of TirzepatideDay 50192000 nanograms * hours per mL (ng*hr/mL)Geometric Coefficient of Variation 16
PlaceboPK: Area Under the Concentration Versus Time Curve (AUC) of TirzepatideDay 126100 nanograms * hours per mL (ng*hr/mL)Geometric Coefficient of Variation 27
2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)PK: Area Under the Concentration Versus Time Curve (AUC) of TirzepatideDay 154400 nanograms * hours per mL (ng*hr/mL)Geometric Coefficient of Variation 16
2.5 mg/5 mg/10 mg Tirzepatide (Cohort 1)PK: Area Under the Concentration Versus Time Curve (AUC) of TirzepatideDay 50285000 nanograms * hours per mL (ng*hr/mL)Geometric Coefficient of Variation 15
5 mg/10 mg/15 mg Tirzepatide (Cohort 2)PK: Area Under the Concentration Versus Time Curve (AUC) of TirzepatideDay 148800 nanograms * hours per mL (ng*hr/mL)Geometric Coefficient of Variation 16
5 mg/10 mg/15 mg Tirzepatide (Cohort 2)PK: Area Under the Concentration Versus Time Curve (AUC) of TirzepatideDay 50104000 nanograms * hours per mL (ng*hr/mL)Geometric Coefficient of Variation 19

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