A Study of LY3457263 in Healthy Participants and Participants With Type 2 Diabetes

Study Overview
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Brief Summary
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The main purpose of this study is to investigate the safety and tolerability of the study drug LY3457263 in healthy participants and participants with type 2 diabetes. Blood tests will be performed to investigate how the body processes the study drug and how the study drug affects the body. The study has two parts (part A and B). Each part will last up to 10 weeks and may include up to either 13 (part A) or 19 (part B) visits.

Official Title
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A Single Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of LY3457263 in Healthy Participants and in Patients With Type 2 Diabetes

Conditions
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Healthy, Type 2 Diabetes

Intervention / Treatment
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* Drug: LY3457263
* Drug: Dulaglutide
* Drug: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Males that agree to use an effective method of contraception or agree to remain abstinent Females that are not of childbearing potential due to postmenopausal status or due to surgical sterility Part A only: Are overtly healthy Body mass index (BMI) of 18.5 to 35 kilograms per meter squared (kg/m²) Part B only: Have been diagnosed with Type 2 Diabetes (T2D) for at least 6 months prior to screening Be treated for T2D with stable dose of metformin, a stable dose of a dipeptidyl peptidase-4 (DPP-4) inhibitor with or without metformin, or a stable dose of a glucagon-like peptide-1 (GLP-1) receptor agonist with or without metformin for at least 3 months prior to screening BMI of 27 to 40 kg/m² Exclusion Criteria: Have undergone any form of bariatric surgery Have used or intend to use medications that promote weight loss within 3 months prior to screening, for the duration of the study Part A only: Have fasting plasma glucose (PG) levels ≥7 millimoles per liter (mmol/L) (≥126 milligrams per deciliter (mg/dL)) at screening Have Hemoglobin A1c (HbA1c) level ≥ 6.5% (48 millimoles per mole (mmol/mol)) at screening Have serum aspartate aminotransferase (AST) or alanine aminotransferase (ALT) >20% and 10%, above the upper limit of normal (ULN), respectively. Elevation of total bilirubin level is considered acceptable in case of Gilbert's disease (with a normal direct bilirubin) Part B only: Have Type 1 Diabetes or latent autoimmune diabetes in adults Have uncontrolled diabetes defined as an episode of ketoacidosis or hyperosmolar state requiring hospitalization in the 6 months prior to screening Have known proliferative diabetic retinopathy, diabetic maculopathy, or severe nonproliferative diabetic retinopathy Present comorbid conditions commonly associated with diabetes (for example, hypertension, hypercholesterolemia, hypothyroidism) unless they are well-controlled with stable medication Have had an episode of severe hypoglycaemia within 6 months prior to screening, or have a history of hypoglycaemia unawareness or poor recognition of hypoglycaemia Have a history of acute or chronic pancreatitis or elevation in serum lipase and/or amylase >2 × ULN at screening Have a resting heart rate of <50 or >100 beats per minute Have an estimated glomerular filtration rate (<60 milliliter/minute (mL/min)/1.73 m2, or a level of estimated glomerular filtration rate that would contraindicate the use of metformin per the label in the respective country Have a screening calcitonin ≥20.0 picograms per milliliter (pg/mL) Fasting serum triglyceride level of >500 mg/dL at screening Have serum AST or ALT >3 × ULN or TBL >1.5 × ULN (except for participants diagnosed with Gilbert's syndrome) Have taken any prescription medication that are specifically indicated for lowering serum triglycerides within the last 3 months Have taken within the last 3 months any medications that interfere with absorption of dietary cholesterol or fats Use of medications known to prolong the QT/QTc interval Treated only with diet and exercise at study entry

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: LY3457263 - Part A<br>Escalating single doses of LY3457263 administered subcutaneously (SC) to healthy participants | Drug: LY3457263<br>* Administered SC<br>|
| Placebo Comparator: Placebo - Part A<br>Placebo administered SC to healthy participants | Drug: Placebo<br>* Administered SC<br>|
| Experimental: LY3457263 - Part B<br>Escalating single doses of LY3457263 administered SC in combination with Dulaglutide administered SC to participants with type 2 diabetes | Drug: LY3457263<br>* Administered SC<br>Drug: Dulaglutide<br>* Administered SC<br>* Other names: LY2189265;|
| Placebo Comparator: Placebo - Part B<br>Placebo administered SC in combination with Dulaglutide administered SC to participants with type 2 diabetes | Drug: Dulaglutide<br>* Administered SC<br>* Other names: LY2189265;Drug: Placebo<br>* Administered SC<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants with One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration | A summary of SAEs and other non-serious adverse events (AEs), regardless of causality, will be reported in the Reported Adverse Events module | Baseline through Day 42 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-inf]) of LY3457263 | PK: AUC[0-inf] of LY3457263 | Day 1 through Day 42 |