Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre Analysis
Objectives: We aimed to determine whether radiomic features extracted from a highly homogeneous database of breast MRI could non-invasively predict pathological complete responses (pCR) to neoadjuvant chemotherapy (NACT) in patients with breast cancer. Methods: One hundred patients with breast cance...
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doaj-a021400b277e4f30bcdfd5e77e9fcd0b2021-09-09T13:40:13ZengMDPI AGCancers2072-66942021-08-01134271427110.3390/cancers13174271Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre AnalysisFilippo Pesapane0Anna Rotili1Francesca Botta2Sara Raimondi3Linda Bianchini4Federica Corso5Federica Ferrari6Silvia Penco7Luca Nicosia8Anna Bozzini9Maria Pizzamiglio10Daniela Origgi11Marta Cremonesi12Enrico Cassano13Breast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyBreast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyMedical Physics Unit, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyMolecular and Pharmaco-Epidemiology Unit, Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, 20139 Milan, ItalyMedical Physics Unit, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyMolecular and Pharmaco-Epidemiology Unit, Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, 20139 Milan, ItalyBreast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyBreast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyBreast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyBreast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyBreast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyMedical Physics Unit, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyRadiation Research Unit, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyBreast Imaging Division, Radiology Department, IEO European Institute of Oncology IRCCS, 20141 Milan, ItalyObjectives: We aimed to determine whether radiomic features extracted from a highly homogeneous database of breast MRI could non-invasively predict pathological complete responses (pCR) to neoadjuvant chemotherapy (NACT) in patients with breast cancer. Methods: One hundred patients with breast cancer receiving NACT in a single center (01/2017–06/2019) and undergoing breast MRI were retrospectively evaluated. For each patient, radiomic features were extracted within the biopsy-proven tumor on T1-weighted (T1-w) contrast-enhanced MRI performed before NACT. The pCR to NACT was determined based on the final surgical specimen. The association of clinical/biological and radiomic features with response to NACT was evaluated by univariate and multivariable analysis by using random forest and logistic regression. The performances of all models were assessed using the areas under the receiver operating characteristic curves (AUC) with 95% confidence intervals (CI). Results: Eighty-three patients (mean (SD) age, 47.26 (8.6) years) were included. Patients with HER2+, basal-like molecular subtypes and Ki67 ≥ 20% presented a pCR to NACT more frequently; the clinical/biological model’s AUC (95% CI) was 0.81 (0.71–0.90). Using 136 representative radiomics features selected through cluster analysis from the 1037 extracted features, a radiomic score was calculated to predict the response to NACT, with AUC (95% CI): 0.64 (0.51–0.75). After combining the clinical/biological and radiomics models, the AUC (95% CI) was 0.83 (0.73–0.92). Conclusions: MRI-based radiomic features slightly improved the pre-treatment prediction of pCR to NACT, in addiction to biological characteristics. If confirmed on larger cohorts, it could be helpful to identify such patients, to avoid unnecessary treatment.https://www.mdpi.com/2072-6694/13/17/4271radiomicsbreast cancermagnetic resonance imagingneoadjuvant chemotherapyoncology |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Filippo Pesapane Anna Rotili Francesca Botta Sara Raimondi Linda Bianchini Federica Corso Federica Ferrari Silvia Penco Luca Nicosia Anna Bozzini Maria Pizzamiglio Daniela Origgi Marta Cremonesi Enrico Cassano |
spellingShingle |
Filippo Pesapane Anna Rotili Francesca Botta Sara Raimondi Linda Bianchini Federica Corso Federica Ferrari Silvia Penco Luca Nicosia Anna Bozzini Maria Pizzamiglio Daniela Origgi Marta Cremonesi Enrico Cassano Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre Analysis Cancers radiomics breast cancer magnetic resonance imaging neoadjuvant chemotherapy oncology |
author_facet |
Filippo Pesapane Anna Rotili Francesca Botta Sara Raimondi Linda Bianchini Federica Corso Federica Ferrari Silvia Penco Luca Nicosia Anna Bozzini Maria Pizzamiglio Daniela Origgi Marta Cremonesi Enrico Cassano |
author_sort |
Filippo Pesapane |
title |
Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre Analysis |
title_short |
Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre Analysis |
title_full |
Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre Analysis |
title_fullStr |
Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre Analysis |
title_full_unstemmed |
Radiomics of MRI for the Prediction of the Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients: A Single Referral Centre Analysis |
title_sort |
radiomics of mri for the prediction of the pathological response to neoadjuvant chemotherapy in breast cancer patients: a single referral centre analysis |
publisher |
MDPI AG |
series |
Cancers |
issn |
2072-6694 |
publishDate |
2021-08-01 |
description |
Objectives: We aimed to determine whether radiomic features extracted from a highly homogeneous database of breast MRI could non-invasively predict pathological complete responses (pCR) to neoadjuvant chemotherapy (NACT) in patients with breast cancer. Methods: One hundred patients with breast cancer receiving NACT in a single center (01/2017–06/2019) and undergoing breast MRI were retrospectively evaluated. For each patient, radiomic features were extracted within the biopsy-proven tumor on T1-weighted (T1-w) contrast-enhanced MRI performed before NACT. The pCR to NACT was determined based on the final surgical specimen. The association of clinical/biological and radiomic features with response to NACT was evaluated by univariate and multivariable analysis by using random forest and logistic regression. The performances of all models were assessed using the areas under the receiver operating characteristic curves (AUC) with 95% confidence intervals (CI). Results: Eighty-three patients (mean (SD) age, 47.26 (8.6) years) were included. Patients with HER2+, basal-like molecular subtypes and Ki67 ≥ 20% presented a pCR to NACT more frequently; the clinical/biological model’s AUC (95% CI) was 0.81 (0.71–0.90). Using 136 representative radiomics features selected through cluster analysis from the 1037 extracted features, a radiomic score was calculated to predict the response to NACT, with AUC (95% CI): 0.64 (0.51–0.75). After combining the clinical/biological and radiomics models, the AUC (95% CI) was 0.83 (0.73–0.92). Conclusions: MRI-based radiomic features slightly improved the pre-treatment prediction of pCR to NACT, in addiction to biological characteristics. If confirmed on larger cohorts, it could be helpful to identify such patients, to avoid unnecessary treatment. |
topic |
radiomics breast cancer magnetic resonance imaging neoadjuvant chemotherapy oncology |
url |
https://www.mdpi.com/2072-6694/13/17/4271 |
work_keys_str_mv |
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