ArticleCancers2025
Endocrine Maintenance Therapy in High-Grade Serous Ovarian Cancer: A Retrospective Off-Label Real-World Cohort Study.
Article in Cancers, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
backgroundEndocrine therapy is the standard-of-care maintenance treatment for estrogen receptor (ER)-positive breast cancers and is increasingly used in low-grade serous ovarian cancer. However, its therapeutic role in the early maintenance setting for ER-positive high-grade serous ovarian cancer (HGSC) remains undefined.
methodsA retrospective analysis was conducted on clinicopathological data from patients with newly diagnosed ER-positive HGSC following completion of adjuvant chemotherapy. Patients received maintenance therapy either with or without the aromatase inhibitor letrozole, in addition to standard maintenance care. ER expression levels and the administration of letrozole were analyzed, along with outcome measures for the entire cohort, with stratification based on residual disease status.
resultsA total of 102 patients with newly diagnosed HGSC were included in the analysis, with 64 (62.7%) receiving letrozole and 38 (37.3%) not receiving letrozole. The median ER expression was 70%, with higher expression observed in the letrozole group compared to the no letrozole group (77.5% vs. 60%). No significant correlation was found between ER expression status and therapy response (
conclusionsMaintenance letrozole therapy appears to be a well-tolerated and potentially beneficial intervention in a subset of patients with ER-positive HGSC with no residual disease post-treatment. These findings highlight the need for further validation through prospective randomized trials to comprehensively assess the efficacy of endocrine therapy in this setting and its implications for patient quality of life.
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