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Erschienen in: Breast Cancer Research and Treatment 2/2019

16.10.2018 | Epidemiology

Multivariate machine learning models for prediction of pathologic response to neoadjuvant therapy in breast cancer using MRI features: a study using an independent validation set

verfasst von: Elizabeth Hope Cain, Ashirbani Saha, Michael R. Harowicz, Jeffrey R. Marks, P. Kelly Marcom, Maciej A. Mazurowski

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 2/2019

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Abstract

Purpose

To determine whether a multivariate machine learning-based model using computer-extracted features of pre-treatment dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) can predict pathologic complete response (pCR) to neoadjuvant therapy (NAT) in breast cancer patients.

Methods

Institutional review board approval was obtained for this retrospective study of 288 breast cancer patients at our institution who received NAT and had a pre-treatment breast MRI. A comprehensive set of 529 radiomic features was extracted from each patient’s pre-treatment MRI. The patients were divided into equal groups to form a training set and an independent test set. Two multivariate machine learning models (logistic regression and a support vector machine) based on imaging features were trained to predict pCR in (a) all patients with NAT, (b) patients with neoadjuvant chemotherapy (NACT), and (c) triple-negative or human epidermal growth factor receptor 2-positive (TN/HER2+) patients who had NAT. The multivariate models were tested using the independent test set, and the area under the receiver operating characteristics (ROC) curve (AUC) was calculated.

Results

Out of the 288 patients, 64 achieved pCR. The AUC values for predicting pCR in TN/HER+ patients who received NAT were significant (0.707, 95% CI 0.582–0.833, p < 0.002).

Conclusions

The multivariate models based on pre-treatment MRI features were able to predict pCR in TN/HER2+ patients.
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Metadaten
Titel
Multivariate machine learning models for prediction of pathologic response to neoadjuvant therapy in breast cancer using MRI features: a study using an independent validation set
verfasst von
Elizabeth Hope Cain
Ashirbani Saha
Michael R. Harowicz
Jeffrey R. Marks
P. Kelly Marcom
Maciej A. Mazurowski
Publikationsdatum
16.10.2018
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 2/2019
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-018-4990-9

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