Some studies in placenta and endometrial tissues have considered YWHAZ as a housekeeping gene (Meller et al., 2005; Vestergaard et al., 2011; Sadek et al., 2012a,b; Jeda et al., 2014; Nelissen et al., 2014; Li et al., 2016; Wang et al., 2017; Yang et al., 2019; Yu et al., 2020), and others have found that the expression of YWHAZ is high in the eutopic endometrium of baboons with endometriosis, contributing to the pathophysiology of endometriosis (Joshi et al., 2015). This evidence concerns the gene YWHAZ and endometriosis.