In our previous studies, CBX7 was proved to make TWIST-1 transcriptionally nonfunctional during mesenchymal-epithelial transition (MET) process in ovarian cancer, and a subclassification of ovarian cancers based on both CBX7 and TWIST-1 expression was then described which could predict clinical outcomes and patient prognosis in OV (Li et al., 2020c). The gene discussed is CBX7; the disease is ovarian carcinoma.