HLA-A and glioblastoma: Based on the median expression values of HLA-A, HLA-B, HLA-C, HLA-DPA, HLA-DQA, and HLA-DRA, our cohort and the GBM cohort from the Chinese Glioma Genome Atlas (CGGA) dataset, obtained from GlioVis [36] (http://gliovis.bioinfo.cnio.es/), were divided into high- (top 50%) and low- (bottom 50%) expression groups.