(±)14,15-Epoxyeicosatrienoic acid ((±)14(15)-EET) is the Cytochrome P450 metabolite of arachidonic acid. While CYP3A4 may be involved in breast cancer cell growth, (±)14,15-Epoxyeicosatrienoic acid may promote mitosis and anchorage-dependent cloning through STAT3 affected by CYP3A4. (±)14,15-Epoxyeicosatrienoic acid exhibits STAT3-dependent cell growth promotion and may also participate in the autocrine/paracrine pathway that drives cell growth^[1][2].