- Women with uterine papillary serous carcinoma (UPSC) who were eligible for GOG-0210 protocol, a molecular staging study in endometrial cancer, or GOG-0136, a general specimen banking study for gynecologic cancer, have consented to future research, have histologically-confirmed UPSC of any stage, and have satisfactory formalin-fixed and paraffin-embedded primary tumor with or without a satisfactory pre-operative serum specimen available for testing