UBE2K and neoplasm: An analysis of the tumor stem cell markers revealed a significant positive association between Linc01559 expression and the expression of the markers epithelial cell adhesion molecule (EPCAM), CD44, ubiquitin-conjugating enzyme E2 K (UBE2K), X-ray repair cross-complementing 5(XRCC5), small nuclear ribonucleoprotein D3 polypeptide (SNRPD3), and cell division cycle 123 (CDC123) (Figure 3k and Appendix B, Figure A2b).