OXTR and metastatic neoplasm: Both tumor cell types clustered with the non-tumor epithelial cells of the uterus16 and shared characteristic expression of the oxytocin receptor (OXTR) and the inhibin beta B subunit (INHBB) (Fig. 3g and Supplementary Fig. S1), suggesting that the lung metastatic tumor originated from cells resembling the primary MUC16+ uterine tumor cells.