PRTN3 and acute myeloid leukemia: It is known that AML cells express leukemia-associated antigens (LAA) that can be recognized by the immune system, including those derived from proteins such as proteinase 3 (PR3), receptor for hyaluronic acid-mediated motility (RHAMM), and Wilm’s tumor-1 (WT1), among others (7, 8).