TAGLN and endometriosis: Other proteins of interest were tenascin C (TNC), up-regulated in endometriosis compared to both control groups (ES/CS = 1.82, ES/PS = 1.68, EP/CP = 1.50), and transgelin (TAGLN), increased in proliferative phase endometriosis versus controls (EP/CP = 2.17) and ectopic versus eutopic tissue (EcS/ES = 18.83).