ZNF263 and cancer: Given our finding that binding sites for additional zinc finger motif transcription factors are enriched in tapRNA conserved sequences (Additional file 4: Figure S13c), we asked if mutations in cancer are also present in ZNF263 sites, which was among the highly enriched motifs associated with tapRNAs and for which there is available ChIP-Seq data (Fig. 3e; Additional file 4: Figure S13c).