Interestingly, FMRP appears to also regulate the expression of MAPK pathway-related mRNAs (i.e. MAPK4) (Supplementary Table 1) that have a key role in the development of melanoma.62 However, further studies are required to investigate the exact role of these molecules in FMRP-overexpressing melanoma cells. Here, MAPK4 is linked to melanoma.