NRAS and mucosal melanoma: Melanomas of the oral cavity are a model of mucosal melanomaDriver genes in these mucosal melanomas: NRAS, TP53, PTEN, NF1, and KRASMAPK and PI3K/AKT pathways involved in mucosal melanoma formation and progressionMelanomas of the footpad or nail bed are models of acral melanomaClinical trials are performed in dogs with melanoma