Fig 1: Prognostic value and expression characteristics of hub four SAPs in LGGsThe prognostic value of GRIK2 (A); GABRD (B); GRID2 (C); ARC (D). The expression characteristics of hub SAPs in different age: GRIK2 (E); GABRD (F); GRID2 (G); ARC (H); The expression characteristics of hub SAPs in different grades: GRIK2 (I); GABRD (J); GRID2 (K); ARC (L); The expression characteristics of hub SAPs in group of seizure or not: GRIK2 (M); GABRD (N); GRID2 (O); ARC (P). ARC, activity-regulated cytoskeleton associated protein; GABRD, gamma-aminobutyric acid type A receptor subunit delta; GRID2, glutamate ionotropic receptor delta type subunit 2; GRIK2, glutamate ionotropic receptor kainate type subunit 2; LGG, lower-grade glioma; SAP, synapse-associated protein; *P<0.05; **P<0.01; ***P<0.001.