Investigating brain health in breast cancer survivors undergoing hormone therapy

Brain Health in Breast Cancer Survivors: Interaction of Menopause and Endocrine Therapy

Observational Jonsson Comprehensive Cancer Center · NCT04297020

This study is trying to see how hormone therapy affects brain function in breast cancer survivors, especially looking at how menopause plays a role.

Quick facts

Study typeObservational
Enrollment120 (estimated)
Ages35 Years to 65 Years
SexFemale
SponsorJonsson Comprehensive Cancer Center Academic / other
Drugs / interventionschemotherapy
Locations1 site (Los Angeles, California)
Trial IDNCT04297020 on ClinicalTrials.gov

What this trial studies

This observational study aims to explore the effects of endocrine therapy on cognitive function in breast cancer survivors, particularly focusing on the role of menopausal status. By employing a cross-sectional, 2x2 factorial design, the study will compare brain activity between survivors on endocrine therapy and healthy controls using advanced fMRI techniques during a working memory task. The research seeks to address inconsistencies in previous studies by considering menopausal status and utilizing sensitive cognitive measures. The findings could provide insights into how hormone therapy impacts brain health in this population.

Who should consider this trial

Good fit: Ideal candidates include women aged 35-65 who are fluent in English and have adequate vision and hearing to complete testing.

Not a fit: Patients with a history of major neurocognitive disorders, major neurological conditions, or prior cancer treatments may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and management of cognitive health in breast cancer survivors undergoing hormone therapy.

How similar studies have performed: While some studies have explored cognitive effects of hormone therapy, this approach using sensitive fMRI measures in the context of menopausal status is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 35-65
* Fluent in English
* Adequate vision/hearing to complete testing

Exclusion Criteria:

* History of major or mild neurocognitive disorder or dementia
* Diagnosis of major neurological condition (e.g., epilepsy, Parkinson's Disease, stroke)
* Diagnosis of a major psychiatric disorder (e.g., bipolar disorder, schizophrenia)
* Untreated/unstable unipolar depression or anxiety
* Prior history of cancer or chemotherapy (for controls, any history)
* History of a learning disorder
* History of head injury with loss of consciousness \>20 minutes
* History of salpingo-oophorectomy or hysterectomy
* A cardiac pacemaker
* Implanted electronic device
* Claustrophobia
* Currently pregnant
* Orbital metal implant or other metallic foreign bodies

Additional exclusion criteria for controls: current use of a contraceptive agent that interferes with endogenous hormonal fluctuation (e.g., oral contraceptive pill) or precludes determination of menstrual pattern (e.g., hormonally secreting intrauterine device), or current treatment with systemic estrogen replacement therapy.

Where this trial is running

Los Angeles, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cognitive ImpairmentCognitive FunctionBreast cancerendocrine therapy
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.