Microarray analysis of Ifn-γ/Jak/Stat1 effector genes, such as Gbp1 and Gbp5, have grouped the pathway with estrogen receptor negative (ER-) and triple-negative (ER−/PR/Her2-) breast cancers [1], [43], [44], [45], [46]. The gene discussed is GBP5; the disease is breast carcinoma.