PTPRD and head and neck neoplasm: The curated gene set “Davicioni molecular ARMS vs. ERMS up” (n = 20 significant genes of 339 genes) contained three of four lead SNPs representing KANK1, KDM4C, and PTPRD genes per SNP2GENE analysis (padj = 3.59 × 10−2) while the “Snijders amplified in head and neck tumors” gene set (n = 2 significant genes of 37 genes) contained KDM4C and PTPRD genes (padj = 3.59 × 10−2) (Online Resource 5).