In addition to melanoma susceptibility genes, an increased risk of melanoma has been reported in patients with germline mutations causing cancer syndromes, including hereditary breast and ovarian cancer (BRCA1/BRCA2), Werner syndrome (WRN), and xeroderma pigmentosum (XP) (Ransohoff et al., 2016). Here, BRCA1 is linked to xeroderma pigmentosum.