Specifically, chronic lymphocytic leukaemia (36, 38–40), lymphocyte percentage and count (41), mean corpuscular haemoglobin concentration (42, 43), erythrocyte distribution width (42, 44), blood protein levels (45), and immunoglobulin M (IgM) antibody levels (35, 46). Here, CD40LG is linked to B-cell chronic lymphocytic leukemia.