The function of ENSG00000198300 (PEG3, paternally expressed 3) is as follows. Induces apoptosis in cooperation with SIAH1A. Acts as a mediator between p53/TP53 and BAX in a neuronal death pathway that is activated by DNA damage. Acts synergistically with TRAF2 and inhibits TNF induced apoptosis through activation of NF-kappa-B (By similarity). Possesses a tumor suppressing activity in glioma cells. {ECO:0000250, ECO:0000269|PubMed:11260267}.