The purpose of this clinical trial is to learn about the safety and effects of the study medicine (called Mylotarg) for the potential treatment of acute myeloid leukemia (AML). AML is a disease that affects the body's white blood cells. This study is seeking participants in Korea who: * Are 18 years of age or older * Are adults and newly diagnosed with AML * Currently receive Mylotarg for AML treatment in a hospital * Are capable of a personally signed and dated informed consent document indicating that the participant (or a legally acceptable representative) has been informed of all pertinent aspects of the study. Participant's health will be closely monitored for any unwanted reactions during Mylotarg treatment. Disease progression will also be monitored. This will help determine if Mylotarg is safe to use and its effect on AML treatment.