To test whether MAGED1 associates with USP7 in human cells, we performed co-IP-MS of MAGED1 in two different human cell lines: human embryonic kidney 293 T (HEK293T) and neuroblastoma (SH-SY5Y) cells (Fig. 3j–m and Supplementary Data 2). This evidence concerns the gene MAGED1 and neuroblastoma.