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A Study of Tirzepatide at Different Injection Sites in Participants With Different Body Sizes

Effect of Injection Site on the Relative Bioavailability of a Single Dose of Tirzepatide in Subjects With Low and High Body Mass Indices

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04050670
Enrollment
54
Registered
2019-08-08
Start date
2019-09-13
Completion date
2020-04-03
Last updated
2023-05-06

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

Conditions

Healthy

Brief summary

The purpose of this study is to compare the amount of tirzepatide that gets into the blood stream and how long it takes the body to get rid of it, when injected under the skin of the upper arm and thigh compared to the abdomen. The study will be conducted in healthy males and females with different body sizes. The tolerability of tirzepatide will be evaluated and information about any side effects experienced will be collected. For each participant, the study will last about 20 weeks, including screening.

Interventions

DRUGTirzepatide

Tirzepatide administered SC

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy males or females of nonchildbearing potential as determined by medical history, physical examination, and other screening procedures * Are between the body mass index (BMI) of 18.5 and 45.0 kilograms per meter squared (kg/m²), inclusive, at screening * Are agreeable to receiving study treatment by injections under the skin

Exclusion criteria

* Have known allergies to tirzepatide or related compounds * Have a personal or family history of medullary thyroid carcinoma or have multiple endocrine neoplasia syndrome type 2 * Have a history or presence of pancreatitis (history of chronic pancreatitis or idiopathic acute pancreatitis), elevation in serum amylase or lipase or gastrointestinal (GI) disorder (eg, relevant esophageal reflux or gall bladder disease) or any GI disease which impacts gastric emptying (eg, gastric bypass surgery, pyloric stenosis, with the exception of appendectomy) or could be aggravated by glucagon-like peptide-1 (GLP-1) analogs or dipeptidyl peptidase IV (DPP-IV) inhibitors * Have a prior history of malignant disease(s) in the past 5 years prior to screening * Smoke more than the equivalent of 10 cigarettes per day * Is a known user of drugs of abuse

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve of Tirzepatide From Time Zero to Infinity (AUC[0-∞])Predose, 8, 12, 24, 36, 48, 72, 96, 120, 144, 168, 336, 480 hours post dosePharmacokinetics (PK): Area Under the Concentration Versus Time Curve of Tirzepatide From Time Zero to Infinity (AUC\[0-∞\]) was evaluated.
PK: Maximum Concentration (Cmax) of TirzepatidePredose, 8, 12, 24, 36, 48, 72, 96, 120, 144, 168, 336, 480 hours post dosePK: Maximum Concentration (Cmax) of Tirzepatide was evaluated.

Countries

United States

Participant flow

Pre-assignment details

There was a washout period of at least 35 days between Tirzepatide injections.

Participants by arm

ArmCount
All Participants
Participants received 5mg Tirzepatide by subcutaneous injection administered through either upper arms or abdomen or thigh as per the dosing sequence.
54
Total54

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Period 3Physician Decision010

Baseline characteristics

CharacteristicAll Participants
Age, Continuous47.1 years
STANDARD_DEVIATION 12.8
Ethnicity (NIH/OMB)
Hispanic or Latino
16 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
38 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
14 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
40 Participants
Region of Enrollment
United States
54 Participants
Sex: Female, Male
Female
17 Participants
Sex: Female, Male
Male
37 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 540 / 540 / 53
other
Total, other adverse events
37 / 5431 / 5423 / 53
serious
Total, serious adverse events
0 / 540 / 540 / 53

Outcome results

Primary

Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve of Tirzepatide From Time Zero to Infinity (AUC[0-∞])

Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve of Tirzepatide From Time Zero to Infinity (AUC\[0-∞\]) was evaluated.

Time frame: Predose, 8, 12, 24, 36, 48, 72, 96, 120, 144, 168, 336, 480 hours post dose

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

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Tirzepatide - AbdomenPharmacokinetics (PK): Area Under the Concentration Versus Time Curve of Tirzepatide From Time Zero to Infinity (AUC[0-∞])112000 Hour * nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 24
Tirzepatide - Upper ArmPharmacokinetics (PK): Area Under the Concentration Versus Time Curve of Tirzepatide From Time Zero to Infinity (AUC[0-∞])111000 Hour * nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 21
Tirzepatide - ThighPharmacokinetics (PK): Area Under the Concentration Versus Time Curve of Tirzepatide From Time Zero to Infinity (AUC[0-∞])106000 Hour * nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 22
90% CI: [0.935, 0.97]Linear mixed effects model
90% CI: [0.972, 1.01]Linear mixed effects model
Primary

PK: Maximum Concentration (Cmax) of Tirzepatide

PK: Maximum Concentration (Cmax) of Tirzepatide was evaluated.

Time frame: Predose, 8, 12, 24, 36, 48, 72, 96, 120, 144, 168, 336, 480 hours post dose

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

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Tirzepatide - AbdomenPK: Maximum Concentration (Cmax) of Tirzepatide603 Nanogram per Millilitre (ng/mL)Geometric Coefficient of Variation 25
Tirzepatide - Upper ArmPK: Maximum Concentration (Cmax) of Tirzepatide556 Nanogram per Millilitre (ng/mL)Geometric Coefficient of Variation 23
Tirzepatide - ThighPK: Maximum Concentration (Cmax) of Tirzepatide520 Nanogram per Millilitre (ng/mL)Geometric Coefficient of Variation 21
90% CI: [0.818, 0.909]Linear mixed effects model
95% CI: [0.874, 0.971]Linear mixed effects model

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