Prognostic and therapeutic implication of molecular classification including L1CAM expression in high-risk endometrial cancer

  • 0Institute for Cancer Genetics and Informatics, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway; Department of Informatics, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway; Centre for Research-based Innovation Visual Intelligence, UiT The Arctic University of Norway, Tromsø, Norway.

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Summary

This summary is machine-generated.

Molecular profiling and L1CAM expression are crucial for predicting high-risk endometrial cancer recurrence and survival. L1CAM is a significant prognostic factor, especially in p53 abnormal and NSMP groups.

Area Of Science

  • Gynecologic Oncology
  • Molecular Pathology
  • Cancer Genomics

Background

  • The prognostic role of molecular classification and L1 cell adhesion molecule (L1CAM) in high-risk endometrial cancer remains unclear.
  • Understanding these factors is vital for refining treatment strategies and improving patient outcomes.

Purpose Of The Study

  • To investigate the association between molecular profiling (ProMisE classification) and L1CAM expression with recurrence patterns and cancer-specific survival (CSS) in high-risk endometrial cancer.
  • To determine the independent prognostic value of L1CAM in relation to established molecular subtypes.

Main Methods

  • Retrospective cohort study of 489 patients with high-risk endometrial cancer.
  • Molecular classification using ProMisE (POLE, MMRd, p53, NSMP) and L1CAM expression analysis.
  • Time to recurrence (TTR) and CSS were the primary endpoints, analyzed using multivariable models.

Main Results

  • Of 486 classified patients, molecular subtypes were POLE-mutated (8%), MMRd (30%), p53 abnormal (39%), and NSMP (23%). High L1CAM expression was found in 53% of tumors.
  • L1CAM expression was a significant independent predictor for both TTR and CSS in multivariable analysis.
  • While ProMisE showed significance for TTR, L1CAM retained significance when included in a model with ProMisE, indicating its distinct prognostic value. POLE-mutated tumors had excellent prognosis; p53 abnormal or high L1CAM tumors had poor prognosis.

Conclusions

  • L1CAM serves as an independent adverse prognostic factor in endometrial cancer, particularly within the p53 abnormal and NSMP molecular groups.
  • Patients with p53 abnormal or NSMP tumors and high L1CAM expression require specialized attention and potentially intensified adjuvant treatment strategies.