GFAP and histiocytic sarcoma: Moreover, of the family of peroxiredoxins (PRX), we found specifically PRX6 to be upregulated in TLE-HS, which revealed negative correlation with RBFOX3 (rs = − 0.7401, p < 0.0001) and positive correlation with GFAP (rs = 0.8735, p < 0.0001) (Fig. 3h-j).