This study checks how safe and effective a new medicine called **AT-1501** is compared to a medicine called **tacrolimus** for people getting a new kidney. A kidney transplant is when a person gets a healthy kidney from someone else. In this study, up to 120 people getting their first kidney transplant will be divided into two groups. Both groups will get rATG induction with corticosteroids and mycophenolate for maintenance. One group will receive AT-1501, and the other will get tacrolimus. The study is to see if AT-1501 helps in stopping the body from rejecting the new kidney.

• The study lasts for some time, and participants need to follow specific rules, like using contraception.
• Participants should not be on other strong immune-system-affecting treatments.
• There are conditions about the donor kidney, like how long it was out of the body.

If you think you might be interested, you must be at least 18 years old, getting your first kidney transplant, and willing to follow study requirements. Make sure to talk to your doctor to see if this study is right for you!