Cytogenetically normal acute myeloid leukemia (CN-AML) is a type of hematopoietic tissue (bone marrow) cancer called acute myeloid leukemia. In normal bone marrow, early blood cells called hematopoietic stem cells develop into several types of blood cells: white blood cells (leukocytes) that protect the body against infection, red blood cells (erythrocytes) that carry oxygen and platelets (thrombocytes) play a role in blood coagulation, in acute myeloid leukemia, the bone marrow produces a large number of abnormal and immature white blood cells called myeloid blasts. Instead of becoming normal white blood cells, myeloid blasts turn into blood cancer cells.