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Cortical Brain Age from Pre-treatment to Post-chemotherapy in Patients with Breast Cancer

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Abstract

Chemotherapy-related cognitive impairment and associated brain changes may reflect accelerated brain aging; however, empirical evidence for this theory is limited. The purpose of this study was to measure brain aging in newly diagnosed patients with breast cancer treated with chemotherapy (n = 43) and compare its longitudinal change to that of controls (n = 50). Brain age indices, derived from cortical measures, were compared between women with breast cancer and matched healthy controls across 3 timepoints (time 1: pre-surgery, time 2: 1 month following chemotherapy completion, and time 3: 1-year post-chemotherapy). The breast cancer group showed a significant decrease in cortical thickness across the 3 timepoints (p < .001) and a trend towards significant increase in predicted brain age especially from pre-treatment (time 1) to post-chemotherapy (time 2) compared to controls (p = 0.08). Greater increase in predicted brain age was related to several clinical factors (HER-2 status, surgery type, and history of neoadjuvant chemotherapy) and greater decrease in cortical thickness was associated with greater decrease in performance on a verbal learning task from time 1 to time 3 (r = − 0.48, p < .01). This study demonstrated evidence of increased cortical brain aging in middle-aged patients with breast cancer following chemotherapy treatment that was associated with decreased verbal memory performance.

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The raw data supporting the conclusions of this manuscript will be made available by the authors, without undue reservation, to any qualified researcher.

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Acknowledgments

The authors wish to thank the faculty and staff at the Stanford University Richard M. Lucas Center for their assistance with neuroimaging acquisitions.

Funding

This research was funded by a grant from the National Cancer Institute (National Institutes of Health, 1R01CA172145, MPIs: SK, OP).

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Authors and Affiliations

Authors

Contributions

AH assisted with data analyses and interpretation and wrote the manuscript and edited the manuscript.

VR assisted with neuroimaging preprocessing, statistical analyses, and writing the manuscript.

RH provided consultation and interpretation regarding the relationships between medical/treatment variables and neurologic status and writing the manuscript.

MK provided consultation and interpretation regarding the clinical implications and writing the manuscript.

DB provided consultation regarding patient recruitment and approval for publication of the content.

OP co-supervised data acquisition and oversaw study coordination and provided editing of the manuscript.

SK is the PI for this study. She was responsible for to the conception or design of the work, the acquisition, statistical analysis and interpretation of data for the work, edited the manuscript and is the corresponding author.

Corresponding author

Correspondence to Ashley Henneghan.

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The authors declare that they have no conflict of interest.

Research Involving Human Participants and/or Animals

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (Stanford Institutional Review Board, # 14623) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed Consent

Informed consent was obtained from all individual participants included in the study.

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Henneghan, A., Rao, V., Harrison, R.A. et al. Cortical Brain Age from Pre-treatment to Post-chemotherapy in Patients with Breast Cancer. Neurotox Res 37, 788–799 (2020). https://doi.org/10.1007/s12640-019-00158-z

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  • DOI: https://doi.org/10.1007/s12640-019-00158-z

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