SOX10 and synovial sarcoma: SOX10 in Differentiating MPNSTs and Synovial Sarcomas:SOX10 staining demonstrates a 67% positivity rate for MPNST, compared to only 7% in synovial sarcomas;SOX10 staining exhibits a sensitivity of 67% and specificity of 93%, making it a moderately sensitive but highly specific marker for distinguishing MPNST from synovial sarcoma.