Both ST6GAL1 and ST6GAL2 were detected in GBMs (regardless of Isocitrate dehydrogenase status) in data from The Cancer Genome Atlas accessed via Gliovis at http://gliovis.bioinfo.cnio.es (36, 37) and/or GBMseq (38) accessed online (Supplemental Figure 2, B–G). This evidence concerns the gene ST6GAL1 and cancer.