Regulation of TROP2 expression in breast cancer

Expression of genes highly correlated with TACSTD2 expression in breast tumors and corresponding patient-derived xenografts (PDXs) and found that 29 genes were overlapping between in 18 breast cancer samples and matching PDXs. Among these genes, TACSTD2 expression strongly correlated with expression of epithelial marker CDH1 (E-Cadherin) (r2=0.823; p<0.001). Expression of TACSTD2 was then compared to expression of CDH1 in breast cancer cell lines from The Cancer Cell Line Encyclopedia (CCLE) (N = 51) and The Library of Integrated Network-Based Cellular Signatures (LINCS) (N = 35). There was also a significant correlation between TACSTD2 and CDH1 in both CCLE (r2=0.564, p < 0.001) and LINCS (r2= 0.755; p < 0.001). Overall design: Comparision of gene expression between PDX and tumors.