GATA3 and endometrioid adenocarcinoma: Terzik et al. reported GATA3 positivity in endometrial premalignant and malignant proliferations with an incidence of 8% (5 of 64 cases): one with atypical hyperplasia, one high-grade endometrioid adenocarcinoma, two serous carcinomas and one carcinosarcoma.