The aim of this study is to evaluate safety, and tolerability of insulin LY3209590 following a single dose given to children with type 2 diabetes mellitus (T2DM). This will be the first study to evaluate LY3209590 in pediatric patients with T2DM.

Screening:

All participants will be screened up to 28 days prior to dosing.

Treatment and Assessment Period:

On Day 1, participants will receive a single 100-Unit subcutaneous dose of LY3209590 at the clinical research unit.

Follow up research visits will be performed on Days 3, 5, 7, 15, 29, 43, and 65. Blood sampling and safety assessments will be performed at each in clinic visit. Before each study visit, subjects will need to fast for at least 8 hours.

A follow-up telephone call will be performed on approximately Day 72. The total time for participation is the study is about 100 days.

This study wants to know about the problems that Black or African American teenagers with type 1 diabetes (T1D) and their families face. It also wants to see how these problems affect their feelings, behavior, and how they get along with others. The study will find out how well they can handle T1D and adapt to it. It will also learn how good things like being strong, family, and where they live might help young people who have to deal with hard things. This includes how well they handle their feelings, behavior, relationships, and T1D care.