RCN1 and glioblastoma: In addition, subgroup analysis showed that there were no statistical differences neither in the non-adjusted model nor adjusted I model, except for chemotherapy (Pinteraction = 0.0019 in the non-adjusted model, Pinteraction = 0.0118 in the adjusted I model, respectively) (Table 3), revealing that RCN1 might be an independent prognostic factor for OS in patients with GBM.