Lyubertsy

Researchers are conducting a national, multicenter, prospective study in the Russian Federation to collect real-world data on patients with aggressive, advanced endometrial cancer (stages III-IV). The study aims to understand the prevalence of molecular markers such as POLE mutations, dMMR/pMMR, p53 abnormalities, HER2, and PD-L1, as well as to observe first-line postoperative treatment approaches in these patients. Approximately 500 female patients with newly diagnosed aggressive subtypes of advanced endometrial cancer will be enrolled across about 30 sites. The study involves two visits aligned with routine clinical practice. At the first visit, demographic and clinical information will be collected from medical records or patient interviews, along with biopsy or archival tumor samples for molecular testing using immunohistochemistry and genetic sequencing methods. The second visit occurs six months after baseline or at disease progression, whichever is earlier, to gather follow-up data on treatments and disease status. No additional procedures beyond standard care are applied. Participants' data will be securely entered into electronic case report forms by study physicians. Researchers will monitor the rates of molecular markers such as POLE mutation positivity, mismatch repair status, p53 abnormalities, PD-L1 expression, and HER2 expression over 24 months. The overall study duration, from first patient enrollment to final data analysis, is expected to be about 27 months or until all data from 500 patients are collected, including follow-up information.