CXCL13 and B-cell chronic lymphocytic leukemia: Therefore, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for different cut-off values of sCD23 for the prediction of CLL, FL, and DLBCL and cut-off values of CXCL13 for the prediction of FL and DLBCL were determined (Supplementary Table 7–8).