Although endometriosis is a benign disease, three studies have shown that EGCG treatment drove apoptosis in endometriosis cells [62,159,160] and increased the expression of apoptotic factors like NF-κB and mitogen-activated protein kinase 1 (MAPK1) (Figure 5; Table 2) [159]. The gene discussed is MAPK1; the disease is endometriosis.