Since the expression levels of ABCA6 in PDXs and in the corresponding PDX-derived cell lines were found to be more similar to those found in clinical samples than in conventional cell lines with a long history in culture (Supplementary Fig. 2), we decided to use the PDX-derived cell lines to study in more detail the impact that this transporter has on the regulation of tumor cell growth and migration. This evidence concerns the gene ABCA6 and neoplasm.