We used the same tumour classification to subtype the 120 cell lines that had publically available expression data and could show that the tumour ‘pigmentation’ subgroup that highly expresses MITF, corresponds to the cell line ‘proliferative’ phenotype described by Hoek et al. Accordingly, the tumour ‘proliferative’ and ‘high-immune’ subgroups comprise the cell line ‘invasive’ phenotype (Fig. 7A). Here, MITF is linked to neoplasm.