TNFSF13B and B-cell chronic lymphocytic leukemia: Kofler et al. investigated the relations between biological activity of atacicept and genetic variants of some of BAFF/APRIL axis genes and delivered preliminary data suggesting that TNFSF13 rs3803800G>A and TNFRSF13B rs11078355A>G may be associated with response to atacicept treatment in CLL [32].