MONDO_0004963 (T-cell acute lymphoblastic leukemia) is acute lymphoblastic leukemia of T-cell origin. It comprises about 15% of childhood cases and 25% of adult cases. It is more common in males than females. (WHO, 2001). Also known as: T acute lymphoblastic leukaemia, T acute lymphoblastic leukemia, T-ALL, T-cell ALL, T-cell acute lymphoblastic leukaemia, T-cell acute lymphocytic leukaemia, T-cell acute lymphocytic leukemia, T-cell type acute leukaemia.