HRAS and rhabdomyosarcoma: Parallel sequencing directed to scan a selected panel of genes using genomic DNA obtained from the skin lesions, blood, buccal brush and rhabdomyosarcoma tissue samples was performed, allowing the identification of a somatic pathogenic missense variant in the HRAS gene (c.37G>C, p.Gly13Arg; NM_005343.4) in both the epidermal nevus and tumour tissues.