GPR30 was positively expressed in 20 cases (100%) of atypical ectopic endometrium, and the average semiquantitative HScore was 305 (0–356); moreover, GPR30 was positively expressed in 3 cases (15%) of benign ectopic endometrium, and the average HScore was 62 (0–180). Here, GPER1 is linked to cervical carcinoma.