To explore the molecular mechanism of MOSPD2 in regulating NPC cell metastasis, we used plasmids to promote MOSPD2 expression in CNE-1-BART22, CNE-2-BART22, and SUNE-1-BART22 cells (Fig. S9A) and siRNA interference to decrease MOSPD2 expression in C666-1-shBART22 cells (Figs. S9B and S9C). This evidence concerns the gene MOSPD2 and nasopharyngeal carcinoma.