A similar profile of enhanced CYP expression (fold-change after 4 h of treatment) was observed in the other NAP-6 sensitive MCF-7, BT474, SKBR3, T47D, ZR-75-1 breast cancer cell lines, while the non-sensitive MCF10A and MDA-MB-231 failed to induce this response (Fig. 7). Here, PPIG is linked to breast cancer.