CD40LG and systemic lupus erythematosus: For IGHJ1 and IGHJ2, the 5′J trimmed length of IGHJ1 (in-frame sequences) showed significant differences compared with the other IGHJ subfamilies in the SLE and IgM with HBV vaccine groups (one-way ANOVA with Bonferroni correction, p < 0.001).