Using the model shown in Table 3 for the outcome, but without the contribution of the IgG-RF parameter, we have shown that the best independent predictors of “good EULAR response to the BCDT after the sixth month FU” in the RA patients were a baseline lymphocyte count of <1875/uL (OR (95% CI): 7.92 (2.08–30.23)), plasma BAFF levels <1011 pg/ml (OR (95% CI): 7.58 (1.48–38.90)) and no current steroid therapy (OR (95% CI): 11.11 (2.50–50.00)). This evidence concerns the gene TNFSF13B and rheumatoid arthritis.