PGRMC1 and glioblastoma: ITGB1 significantly correlated with PGRMC1 in these tissues (p = 0.002, Rho = 0.244; Spearman’s rank) (Figure 4A) and PGRMC1high GBM patients had significantly higher levels of ITGB1 compared to PGRMC1low patients (p = 0.005, Mann–Whitney U) (Figure 4B).