Although the survival factors for CD11c+ABCs remain to be determined, CD11c+ABCs express high levels of BAFF receptor (BAFFR), intermediate densities of Transmembrane activator and CAML interactor (TACI) and minimal B-cell maturation antigen (BCMA) in lupus patients (50). This evidence concerns the gene TNFRSF13C and systemic lupus erythematosus.