SOX9 and chondrosarcoma: Infection with the oncolytic virus (T-VEC) revealed that SOX9 knockout clone 11 retained significantly more viable cells after T-VEC infection with an MOI (multiplicity of infection) of 10, and SOX9 knockout clone 8 showed the same result by trend (Figure 6C), implying a lower potential efficiency of this anticancer therapy in chondrosarcoma cells without SOX9 expression.