This study is for adults with a type of blood cancer called Acute Myeloid Leukemia (AML) that has come back or didn't go away with treatment. The study will test a new medicine, CC-96191, to see if it's safe and how it works. In the first part, called dose escalation, different amounts of the medicine are tried to find the best dose. In the second part, called expansion, the study checks if this dose is safe for more people and how well it works.

To join, you need to be 18 or older, have a type of AML, and agree to use birth control. You can't join if you have other health issues, certain other cancers, or are pregnant.

• The study has two parts: finding the right dose and testing it further.
• Participants need to be 18 or older and have a specific type of AML.
• Some health conditions and treatments may prevent you from joining the study.