A recent analysis of the Cancer Genome Atlas demonstrated that KIT, KRAS, and NRAS gene variants were observed only in seminoma, while gene variants in B3GNT8, CAPN7, FAT4, GRK1, TACC2, and TRAM1L1 occurred only in embryonal carcinoma [9,14]. This evidence concerns the gene GRK1 and embryonal carcinoma.