In our SMG samples, both MSCs significantly decreased lymphocyte infiltration and the expression of marker genes for B/plasma cells, Th cells, and activated APCs but did not significantly affect the expression of pan-APC marker CD11c, suggesting that IL10 at MSC-treated SMGs might mainly inhibit SS progression by repressing the activation of APCs. The gene discussed is ITGAX; the disease is synovial sarcoma.