In the TCGA cancer genomics dataset, the transcription factors (TFs) BCOR (BCL6 corepressor, FDR = 1.2 × 10–35) and BCLAF1 (Bcl-2-associated transcription factor 1; ActiveDriver FDR = 9.8 × 10–4) were significantly enriched in substitutions in glycosylation sites. This evidence concerns the gene BCOR and cancer.