ITGA5 and glioblastoma: Prognosis analysis revealed that higher expression level of ITGA5 meant shorter OS in Rembrandt GBM cohort (TCGA GBM: hazard ratio = 1.313, 95% confidence interval = 0.918–1.876, p = 0.1215; Rembrandt GBM: hazard ratio = 1.450, 95% confidence interval = 1.069–1.965, p = 0.0122) (Figure S2C).