PARP9 (Poly(ADP-Ribose) Polymerase Family Member 9) is a Protein Coding gene. Diseases associated with PARP9 include B-Cell Lymphomas and Lymphoma. Among its related pathways are Metabolism and Metabolism of water-soluble vitamins and cofactors. GO annotations related to this gene include NAD+ ADP-ribosyltransferase activity. An important paralog of this gene is PARP14. In concert with DTX3L plays a role in PARP1-dependent DNA damage repair. PARP1-dependent PARP9/BAL1-DTX3L-mediated ubiquitination promotes the rapid and specific recruitment of 53BP1/TP53BP1, UIMC1/RAP80, and BRCA1 to DNA damage sites. Involved in inducing the expression of IFN-gamma-responsive genes.