Analysis of human (HOS, SaOS-2, 143B) and mouse (LM8) osteosarcoma cell lines by flow cytometry revealed that IFNGR1 was expressed in all cell lines (HOS; 1.92, p = 0.0022, 143B; 1.83, p = 0.011, SaOS-2; 2.14, p = 0.027, and LM8; 1.3, p = 0.0017. The gene discussed is IFNGR1; the disease is osteosarcoma.