The majority of new cases of acute myeloid leukemia (AML) are diagnosed in patients older than 65 years of age. The median age of patients at time of diagnosis is 67 years. Standard therapies for AML often have significant toxicity and are poorly tolerated by this patient population. Treatment strategies for elderly patients with AML are limited. In those patients who do achieve complete remission, duration of remission tends to be short. Treatment at time of relapse is exceedingly difficult and outcomes are dismal. Thus, there is need for safer and more effective therapies for elderly patients with AML. This trial is a novel therapeutic combination of deferasirox (Exjade), cholecalciferol, and azacitidine in patients 65 years or older with newly diagnosed AML who are not fit for standard induction chemotherapy or hematopoietic stem-cell transplantation.