Acute lymphocytic leukemia (ALL) is a type of cancer of the blood and bone marrow - the spongy tissue inside bones where blood cells are made.

In acute myelogenous leukemia (AML) and acute lymphocytic leukemia (ALL), the original acute leukemia cell goes on to form about a trillion more leukemia cells.

Recently, elevated IL-18 levels were found in serum from some leukemia patients, especially those with acute lymphocytic leukemia (all) and chronic myeloid leukemia (CML).