The tumor was negative for CD 163, CD68, PCK, ALK, ROS1, CD117, CD34, DOG1, SMA, DES, Caldsmon, SOX100, MSA, EMA, CK18/8, CK19, CD1α, CD21, CD23, CD35, langerin, CD45-LCA, HMB45, Melan-A, Braf (V600E), and E-cadherin. The gene discussed is PTPRC; the disease is neoplasm.