This research aims to test a medicine called **retatrutide** in people with **Type 2 Diabetes Mellitus (T2D)** who are **overweight** or have **obesity**. Type 2 Diabetes is a condition where the body struggles to use insulin properly. The study will last around 89 weeks, and during this time, participants will visit the study site up to 24 times. Some participants will also have **obstructive sleep apnea (OSA)**, a condition where breathing stops and starts during sleep.

**Key Points to Consider:**

• **Duration and Visits**: Participation will last about 89 weeks, with up to 24 visits.
• **Eligibility**: You need to have a BMI of 27 or more and a history of trying to lose weight.
• **Exclusions**: Recent weight changes, certain medications, or medical history may exclude participation.

Participants must have stable diabetes treatment for at least 90 days and not have used weight-loss drugs recently. This study checks retatrutide's safety and effectiveness, so it's essential to meet the criteria and attend all visits. There might be some risks or discomforts involved, and it's vital to discuss with a healthcare provider before participating.