Due to the inhibitory effect of PLSCR1 knockdown on tumor growth and the metastatic propensity of BLBC, we evaluated the role of PLSCR1 in tumor metastasis using a xenograft metastasis model in which MDA-MB231 cells with stable empty vector or knockdown of PLSCR1 were used to generate pulmonary metastases. Here, PLSCR1 is linked to neoplasm.