When comparing meningiomas with metastases, the two genes that demonstrated the highest mRNA levels, namely AOX1 (M = 12.81) and GSTM3 (M = 7.89) also differed statistically significantly between the two groups (UAOX1 = 5, p = 0.001, r = -0.61 and UGSTM3 = 8, p = 0.002, r = -0.57, respectively). Here, GSTM3 is linked to meningioma.