The function of ENSG00000239697 (TNFSF12, TNF superfamily member 12) is as follows. Binds to FN14 and possibly also to TNRFSF12/APO3. Weak inducer of apoptosis in some cell types. Mediates NF-kappa-B activation. Promotes angiogenesis and the proliferation of endothelial cells. Also involved in induction of inflammatory cytokines. Promotes IL8 secretion. {ECO:0000269|PubMed:10085077, ECO:0000269|PubMed:23667509}.