PHB2 and lung cancer: The low-metastatic group comprised T47D, ZR751, MCF-7, MDA-MB-453, BCAP37, and ZR7530, while the high-metastatic group included MDA-MB-436, SKBR3, MDA-MB-468, MDA-MB-231, MDA-MB-231HM (highly metastatic lung cancer cell line) and BT549.