In line with these observations and with the expression pattern in DLBCL tumors in vivo, ARTD9 is mainly overexpressed in pSTAT1(Y701/S727)-positive HR-subtype GCB-DLBCL cells and pSTAT3(Y705/S727)-positive BCR-subtype ABC-DLBCL cells weekly expressing pSTAT1(Y701/S727) [470]. This evidence concerns the gene PARP9 and diffuse large B-cell lymphoma.