Original Investigation

Cognitive Impairment and Chemoendocrine vs Endocrine Therapy in Pre- and Postmenopausal Women

JAMA Oncology 10.1001/jamaoncol.2025.5220

December 11, 2025 at 11:00 AM EST

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How does chemoendocrine therapy (CET) compared to endocrine therapy (ET) alone affect cancer-related cognitive impairment (CRCI) in pre- and postmenopausal patients?This secondary analysis of the RxPONDER randomized clinical trial included 568 participants assessed at 6, 12, and 36 months and found that CET had a greater negative association with patient-reported cognitive function compared to ET alone in both the pre- and postmenopausal groups.These findings indicate that cognitive impairment occurs and persists more frequently with CET than with ET alone among both pre- and postmenopausal patients; therefore, interventions to prevent and treat CRCI are needed.

Corresponding Author: Irene M. Kang, MD, City of Hope Comprehensive Cancer Center, 1000 Fivepoint, Irvine, CA 92618 (ikang@coh.org).

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