However, it is not clear whether this subpopulation of cytoplasmic NANOG‐positive cells will increase the risk of in vivo tumorigenicity or not, since MSCs found in the cervical cancer stroma display cytoplasmic NANOG expression and can promote the progression of cervical cancer in vitro and in vivo [Gu et al., 2012]. Here, NANOG is linked to cervical carcinoma.