GPX4 and endometrial carcinoma: To further explore the upstream regulation of GPX4 in endometrial carcinoma, we used the JASPAR database (http://jaspar.genereg.net/) and PROMO software (http://alggen.lsi.upc.es/cgi-bin/promo_v3/promo/promoinit.cgi?dirDB=TF_8.3) to search for potential transcription factors in GPX4 promoter.