CXCL13 and glioblastoma: Bioinformatics analysis revealed that CXCL13 exhibited greater expression in the GBM group (chr4:78526978–78527083:+, chr4:78528857–78528989:+, chr4:78531768–78531848:+, all p < 0.0001, Welch’s t-test; Figure 1A).