FCGR2B and glioblastoma: For all patient samples with both primary and recurrent GBM, only FCGR2B (HR: 1.3220, 95% CI: 0.9988–1.7500) showed a significantly high HR, while SNCB (HR: 0.7181, 95% CI: 0.5422–0.9511) and TUBA4A (HR: 0.7558, 95% CI: 0.5712–1.0000) showed a remarkably low HR (Figure 2C).