We further observed that high expression of UGT2B17 was significantly associated with shorter TFS in CLL cases with a median of 75.5 months for cases with high UGT2B17 expression compared to 126.3 months for cases with low UGT2B17 expression (P < 0.01) (Supplementary Material: Supplementary Table 4). This evidence concerns the gene UGT2B17 and B-cell chronic lymphocytic leukemia.