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Erschienen in: Journal of Cancer Survivorship 4/2020

10.03.2020

Functional connectome biotypes of chemotherapy-related cognitive impairment

verfasst von: Shelli R. Kesler, Melissa L. Petersen, Vikram Rao, Rebecca A. Harrison, Oxana Palesh

Erschienen in: Journal of Cancer Survivorship | Ausgabe 4/2020

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Abstract

Purpose

Cancer-related cognitive impairment (CRCI) is a common neurotoxicity among patients with breast and other cancers. Neuroimaging studies have demonstrated measurable biomarkers of CRCI but have largely neglected the potential heterogeneity of the syndrome.

Methods

We used retrospective functional MRI data from 80 chemotherapy-treated breast cancer survivors to examine neurophysiologic subtypes or “biotypes” of CRCI. The breast cancer group consisted of training (N = 57) and validation (N = 23) samples.

Results

An unsupervised clustering approach using connectomes from the training sample identified three distinct biotypes. Cognitive performance (p < 0.05, corrected) and regional connectome organization (p < 0.001, corrected) differed significantly between the biotypes and also from 103 healthy female controls. We then built a random forest classifier using connectome features to distinguish between the biotypes (accuracy = 91%) and applied this to the validation sample to predict biotype assignment. Cognitive performance (p < 0.05, corrected) and regional connectome organization (p < 0.005, corrected) differed significantly between the predicted biotypes and healthy controls. Biotypes were also characterized by divergent clinical and demographic factors as well as patient reported outcomes.

Conclusions

Neurophysiologic biotypes may help characterize the heterogeneity associated with CRCI in a data-driven manner based on neuroimaging biomarkers.

Implications for Cancer Survivors

Our novel findings provide a foundation for detecting potential risk and resilience factors that warrant further study. With further investigation, biotypes might be used to personalize assessments of and interventions for CRCI.
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Metadaten
Titel
Functional connectome biotypes of chemotherapy-related cognitive impairment
verfasst von
Shelli R. Kesler
Melissa L. Petersen
Vikram Rao
Rebecca A. Harrison
Oxana Palesh
Publikationsdatum
10.03.2020
Verlag
Springer US
Erschienen in
Journal of Cancer Survivorship / Ausgabe 4/2020
Print ISSN: 1932-2259
Elektronische ISSN: 1932-2267
DOI
https://doi.org/10.1007/s11764-020-00863-1

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