UGT2B17 and B-cell chronic lymphocytic leukemia: In multivariate analyses, high leukaemic expression of UGT2B17 further improves the prognostication of individuals with CLL with either mutated (M‐CLL) or unmutated (UM‐CLL) IGHV,21, 22, 23 suggesting a potential impact on B‐cell metabolism in both CLL subgroups.