For example, of the 16 total genes driving the association between melanoma and nevus count, only two (MTAP and ERVFRD‐3) were shared by all three tissues, and six (MAFF, HEBP1, HTR7P1, EMP1, GPRC5A, C9orf66) were specific to melanocyte (Table S18a–c). Here, GPRC5A is linked to melanoma.