TG and B-cell chronic lymphocytic leukemia: In contrast, IGHV1 (51%), IGHV5 (19%), IGHV14 (14%) and IGHV3 (9%) are the subgroup genes most conspicuously used by B cells from the Traf2DNxBCL2-tg+/+ mice and also by the expanded CLL/SLL clones (Figure 3 and Supplementary Table 5).