ZAP70 and diffuse large B-cell lymphoma: The ZAP70, PI3K, and NFAT mRNA expression levels in peripheral blood mononuclear cells from the DLBCL patients (45 cases) were 0.47, 0.47, and 0.62 times, respectively, of the expression in the healthy controls (11 cases; P < 0.05) (Fig. 4).