IFNG and synovial sarcoma: In both classic- and malignant-subtypes of non-AOID-associated SS, both IFN-γ (%positivity: p = 0.001 and p < 0.001, respectively; intensity score: p < 0.001 and p < 0.001, respectively) and IL-17 (%positivity: p < 0.001 and p = 0.006, respectively; intensity score: p = 0.002 and p = 0.031, respectively) were significantly differentially expressed compared with those in controls (Table 4; Figure 2C).