To place our HOXD12-centric findings in the context of all HOX genes, we analyzed the HOX gene body DNA methylation probes present in all 365 oligodendroglioma tumors from the TCGA (N = 171), Capper et al. (N = 170), and GLASS (N = 24) datasets. Here, HOXD12 is linked to oligodendroglioma.