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ABSTRACT: Background
Risk-assessment of endometrial cancer (EC) is based on clinicopathological factors and molecular subgroup. It is unclear whether adding hormone receptor expression, L1CAM expression or CTNNB1 status yields prognostic refinement.Methods
Paraffin-embedded tumour samples of women with high-risk EC (HR-EC) from the PORTEC-3 trial (n = 424), and a Dutch prospective clinical cohort called MST (n = 256), were used. All cases were molecularly classified. Expression of L1CAM, ER and PR were analysed by whole-slide immunohistochemistry and CTNNB1 mutations were assessed with a next-generation sequencing. Kaplan-Meier method, log-rank tests and Cox's proportional hazard models were used for survival analysis.Results
In total, 648 HR-EC were included. No independent prognostic value of ER, PR, L1CAM, and CTNNB1 was found, while age, stage, and adjuvant chemotherapy had an independent impact on risk of recurrence. Subgroup-analysis showed that only in NSMP HR-EC, ER-positivity was independently associated with a reduced risk of recurrence (HR 0.33, 95%CI 0.15-0.75).Conclusions
We confirmed the prognostic impact of the molecular classification, age, stage, and adjuvant CTRT in a large cohort of high-risk EC. ER-positivity is a strong favourable prognostic factor in NSMP HR-EC and identifies a homogeneous subgroup of NSMP tumours. Assessment of ER status in high-risk NSMP EC is feasible in clinical practice and could improve risk stratification and treatment.
SUBMITTER: Vermij L
PROVIDER: S-EPMC10050005 | biostudies-literature | 2023 Mar
REPOSITORIES: biostudies-literature
Vermij Lisa L Jobsen Jan J JJ León-Castillo Alicia A Brinkhuis Mariel M Roothaan Suzan S Powell Melanie E ME de Boer Stephanie M SM Khaw Pearly P Mileshkin Linda R LR Fyles Anthony A Leary Alexandra A Genestie Catherine C Jürgenliemk-Schulz Ina M IM Crosbie Emma J EJ Mackay Helen J HJ Nijman Hans W HW Nout Remi A RA Smit Vincent T H B M VTHBM Creutzberg Carien L CL Horeweg Nanda N Bosse Tjalling T
British journal of cancer 20230123 7
<h4>Background</h4>Risk-assessment of endometrial cancer (EC) is based on clinicopathological factors and molecular subgroup. It is unclear whether adding hormone receptor expression, L1CAM expression or CTNNB1 status yields prognostic refinement.<h4>Methods</h4>Paraffin-embedded tumour samples of women with high-risk EC (HR-EC) from the PORTEC-3 trial (n = 424), and a Dutch prospective clinical cohort called MST (n = 256), were used. All cases were molecularly classified. Expression of L1CAM, E ...[more]