Similar differences were observed in the sub-analysis comparing IgM U-CLL versus IgM M-CLL, and IgM U-CLL versus IgG M-CLL subtypes, except for CD79a levels that did not differ significantly between IgM U-CLL versus IgG M-CLL (Figures 1A, B). This evidence concerns the gene CD40LG and B-cell chronic lymphocytic leukemia.