While we had observed some changes in the expression of gap junction genes in ESCs and EECs with endometriosis (Chen et al., 2021), we saw only modest changes (<35%) in the most highly expressed isoform, Cx43 or in homo-cellular GJIC between ESCs (Figure 3B) between control (black) and endometriosis (gray) patients. This evidence concerns the gene GJA1 and endometriosis.