An extra copy of chromosome 8q, containing the DGAT1 locus but also other putative melanoma oncogenes ASAP1/DDEF, MYC, and GDF6 (Ehlers et al., 2005; Schlagbauer-Wadl et al., 1999; Venkatesan et al., 2018) (Figure 1F), has been observed in approximately 30% of melanoma cases (Bastian et al., 1998). Here, GDF6 is linked to melanoma.