To evaluate the influence of PCDHB17P on breast cancer cells metastasis, we upregulated PCDHB17P expressing with the pcDNA-PCDHB17P plasmid and knocked down PCDHB17P expression in MDA-MB-231 and MCF-7 cells with shRNAs against PCDHB17P (sh-PCDHB17P-1 and sh-PCDHB17P-2) (Supplementary Figure 1A). This evidence concerns the gene PCDHB17P and breast cancer.