HOXD-AS2 and glioblastoma: We analyzed the association of HOXD‐AS2 and MGMT promoter methylation of glioblastoma in TCGA and CGGA databases and no significant difference was observed between methylated and un‐methylated glioblastoma (p = 0.8388, 0.8908, 0.9618, respectively, Figure 4A).