Correlations between BAFF expression and some clinical prognosis markers have been reported [5], and, what is more, the use of BAFF serum levels together with CD38, ZAP70 expression, and immunoglobulin heavy chain variable (IGHV) mutational status has been presented as a promising marker in CLL [12]. Here, ZAP70 is linked to B-cell chronic lymphocytic leukemia.