Moreover, the overexpression of DEK protein we had reported in malignant melanomas56,57 (see examples in Fig. 5b), was now found to reflect a significant mRNA upregulation at early stages of melanoma progression (Fig. 5c), correlating with poor prognosis (Fig. 5d) as the case for CELF1 (Fig. 1c, d; Supplementary Fig. 5a). This evidence concerns the gene CELF1 and melanoma.