TNFSF13 and neoplasm: When these receptors are bound to BAFF (also known as BLyS, TALL-1, zTNF4, and THANK) and/or A proliferation-inducing ligand (APRIL), which are produced by antigen presenting cells (APCs), stromal endothelial cells, nurse-like, and/or malignant cells, they can evade apoptosis and promote tumor cell survival in vitro [9–14].