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. 2021 Sep 16:11:628824.
doi: 10.3389/fonc.2021.628824. eCollection 2021.

Quantitative Multiparametric MRI as an Imaging Biomarker for the Prediction of Breast Cancer Receptor Status and Molecular Subtypes

Zhiqi Yang  1   2 , Xiaofeng Chen  1   2 , Tianhui Zhang  1 , Fengyan Cheng  1 , Yuting Liao  3 , Xiangguan Chen  1   2 , Zhuozhi Dai  4 , Weixiong Fan  1
Affiliations

Quantitative Multiparametric MRI as an Imaging Biomarker for the Prediction of Breast Cancer Receptor Status and Molecular Subtypes

Zhiqi Yang et al. Front Oncol. .

Abstract

Objectives: To assess breast cancer receptor status and molecular subtypes by using the CAIPIRINHA-Dixon-TWIST-VIBE and readout-segmented echo-planar diffusion weighted imaging techniques.

Methods: A total of 165 breast cancer patients were retrospectively recruited. Patient age, estrogen receptor, progesterone receptor, human epidermal growth factorreceptor-2 (HER-2) status, and the Ki-67 proliferation index were collected for analysis. Quantitative parameters (Ktrans, Ve, Kep), semiquantitative parameters (W-in, W-out, TTP), and apparent diffusion coefficient (ADC) values were compared in relation to breast cancer receptor status and molecular subtypes. Statistical analysis were performed to compare the parameters in the receptor status and molecular subtype groups.Multivariate analysis was performed to explore confounder-adjusted associations, and receiver operating characteristic curve analysis was used to assess the classification performance and calculate thresholds.

Results: Younger age (<49.5 years, odds ratio (OR) =0.95, P=0.004), lower Kep (<0.704,OR=0.14, P=0.044),and higher TTP (>0.629 min, OR=24.65, P=0.011) were independently associated with progesterone receptor positivity. A higher TTP (>0.585 min, OR=28.19, P=0.01) was independently associated with estrogen receptor positivity. Higher Kep (>0.892, OR=11.6, P=0.047), lower TTP (<0.582 min, OR<0.001, P=0.004), and lower ADC (<0.719 ×10-3 mm2/s, OR<0.001, P=0.048) had stronger independent associations with triple-negative breast cancer (TNBC) compared to luminal A, and those parameters could differentiate TNBC from luminal A with the highest AUC of 0.811.

Conclusions: Kep and TTP were independently associated with hormone receptor status. In addition, the Kep, TTP, and ADC values had stronger independent associations with TNBC than with luminal A and could be used as imaging biomarkers for differentiate TNBC from Luminal A.

Keywords: breast neoplasms; diffusion weighted imaging; dynamic contrast enhanced magnetic resonance imaging (DCE-MRI); magnetic resonance imaging; molecular subtypes; pharmacokinetics; receptor status.

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Conflict of interest statement

YL is a consultant for GE Healthcare. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Patient selection flow chart.
Figure 2
Figure 2
Box plot graphs revealing statistically significant differences in values for different receptor statuses. The Kep and TTP values were significantly difference in ER status (A1, A2). The Kep and ADC values were significantly difference in HER-2 status (B1, B2); The age, Kep W-out, and TTP values were significantly difference in PR status (C1–C4).
Figure 3
Figure 3
Representative Kep, TTP and ADC images in luminal A and TNBC. (A–C) are the images of Kep, TTP and ADC from a luminal A patient, with mean values of 0.48 min-1, 0.70 min, and 0.89×10-3 mm2/s, respectively. (D–F) are the images of Kep, TTP and ADC from a TNBC patient, with mean values of 0.94 min-1, 0.58 min, and 0.70×10-3 mm2/s, respectively.
Figure 4
Figure 4
ROC curves of different parameters in the differential diagnosis between luminal A and TNBC, between luminal B and HER-2-enriched BC, between luminal B and TNBC, and between HER-2-enriched BC and TNBC.
See this image and copyright information in PMC

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