MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysis

Abstract This meta-analysis aimed to estimate and compare sensitivity, specificity, positive- (PPV) and negative predictive value (NPV) of magnetic resonance imaging (MRI) for predicting pathological complete remission (pCR) after neoadjuvant chemotherapy (NAC) in patients with early-stage breast ca...

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Main Authors: L. M. Janssen, B. M. den Dekker, K. G. A. Gilhuijs, P. J. van Diest, E. van der Wall, S. G. Elias
Format: Article
Language:English
Published: Nature Portfolio 2022-09-01
Series:npj Breast Cancer
Online Access:https://doi.org/10.1038/s41523-022-00475-1
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author L. M. Janssen
B. M. den Dekker
K. G. A. Gilhuijs
P. J. van Diest
E. van der Wall
S. G. Elias
author_facet L. M. Janssen
B. M. den Dekker
K. G. A. Gilhuijs
P. J. van Diest
E. van der Wall
S. G. Elias
author_sort L. M. Janssen
collection DOAJ
description Abstract This meta-analysis aimed to estimate and compare sensitivity, specificity, positive- (PPV) and negative predictive value (NPV) of magnetic resonance imaging (MRI) for predicting pathological complete remission (pCR) after neoadjuvant chemotherapy (NAC) in patients with early-stage breast cancer. We stratified for molecular subtype by immunohistochemistry (IHC) and explored the impact of other factors. Two researchers systematically searched PUBMED and EMBASE to select relevant studies and extract data. For meta-analysis of sensitivity and specificity, we used bivariate random-effects models. Twenty-six included studies contained 4497 patients. There was a significant impact of IHC subtype on post-NAC MRI accuracy (p = 0.0082) for pCR. The pooled sensitivity was 0.67 [95% CI 0.58–0.74] for the HR−/HER2−, 0.65 [95% CI 0.56–0.73] for the HR−/HER2+, 0.55 [95% CI 0.45–0.64] for the HR+/HER2− and 0.60 [95% CI 0.50–0.70] for the HR+/HER2+ subtype. The pooled specificity was 0.85 [95% CI 0.81–0.88] for the HR−/HER2−, 0.81 [95% CI 0.74–0.86] for the HR−/HER2+, 0.88[95% CI 0.84–0.91] for the HR+/HER2− and 0.74 [95% CI 0.63–0.83] for the HR+/HER2+ subtype. The PPV was highest in the HR-/HER2- subtype and lowest in the HR+/HER2− subtype. MRI field strength of 3.0 T was associated with a higher sensitivity compared to 1.5 T (p = 0.00063). The accuracy of MRI for predicting pCR depends on molecular subtype, which should be taken into account in clinical practice. Higher MRI field strength positively impacts accuracy. When intervention trials based on MRI response evaluation are designed, the impact of IHC subtype and field strength on MR accuracy should be considered.
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spelling doaj.art-af750050f9b648d6856c3557a9eda8c72023-11-02T05:20:50ZengNature Portfolionpj Breast Cancer2374-46772022-09-01811710.1038/s41523-022-00475-1MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysisL. M. Janssen0B. M. den Dekker1K. G. A. Gilhuijs2P. J. van Diest3E. van der Wall4S. G. Elias5Image Sciences Institute, University Medical Center Utrecht, Utrecht UniversityDepartment of Radiology, University Medical Center Utrecht, Utrecht UniversityImage Sciences Institute, University Medical Center Utrecht, Utrecht UniversityDepartment of Pathology, University Medical Centre Utrecht, Utrecht UniversityDepartment of Medical Oncology, University Medical Center Utrecht, Utrecht UniversityJulius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht UniversityAbstract This meta-analysis aimed to estimate and compare sensitivity, specificity, positive- (PPV) and negative predictive value (NPV) of magnetic resonance imaging (MRI) for predicting pathological complete remission (pCR) after neoadjuvant chemotherapy (NAC) in patients with early-stage breast cancer. We stratified for molecular subtype by immunohistochemistry (IHC) and explored the impact of other factors. Two researchers systematically searched PUBMED and EMBASE to select relevant studies and extract data. For meta-analysis of sensitivity and specificity, we used bivariate random-effects models. Twenty-six included studies contained 4497 patients. There was a significant impact of IHC subtype on post-NAC MRI accuracy (p = 0.0082) for pCR. The pooled sensitivity was 0.67 [95% CI 0.58–0.74] for the HR−/HER2−, 0.65 [95% CI 0.56–0.73] for the HR−/HER2+, 0.55 [95% CI 0.45–0.64] for the HR+/HER2− and 0.60 [95% CI 0.50–0.70] for the HR+/HER2+ subtype. The pooled specificity was 0.85 [95% CI 0.81–0.88] for the HR−/HER2−, 0.81 [95% CI 0.74–0.86] for the HR−/HER2+, 0.88[95% CI 0.84–0.91] for the HR+/HER2− and 0.74 [95% CI 0.63–0.83] for the HR+/HER2+ subtype. The PPV was highest in the HR-/HER2- subtype and lowest in the HR+/HER2− subtype. MRI field strength of 3.0 T was associated with a higher sensitivity compared to 1.5 T (p = 0.00063). The accuracy of MRI for predicting pCR depends on molecular subtype, which should be taken into account in clinical practice. Higher MRI field strength positively impacts accuracy. When intervention trials based on MRI response evaluation are designed, the impact of IHC subtype and field strength on MR accuracy should be considered.https://doi.org/10.1038/s41523-022-00475-1
spellingShingle L. M. Janssen
B. M. den Dekker
K. G. A. Gilhuijs
P. J. van Diest
E. van der Wall
S. G. Elias
MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysis
npj Breast Cancer
title MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysis
title_full MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysis
title_fullStr MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysis
title_full_unstemmed MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysis
title_short MRI to assess response after neoadjuvant chemotherapy in breast cancer subtypes: a systematic review and meta-analysis
title_sort mri to assess response after neoadjuvant chemotherapy in breast cancer subtypes a systematic review and meta analysis
url https://doi.org/10.1038/s41523-022-00475-1
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