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Breast MRI texture analysis for prediction of BRCA-associated genetic risk.

Vasileio, G., Costa, M. J., Long, C., Wetzler, I. R., Hoyer, J., Kraus, C., Popp, B., Emons, J., Wunderle, M., Wenkel, E., Uder, M., Beckmann, M. W., Jud, S. M., Fasching, P. A., Cavallaro, A., Reis, A. and Hammon, M., 2020. Breast MRI texture analysis for prediction of BRCA-associated genetic risk. BMC Medical Imaging, 20, 86.

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DOI: 10.1186/s12880-020-00483-2

Abstract

Background BRCA1/2 deleterious variants account for most of the hereditary breast and ovarian cancer cases. Prediction models and guidelines for the assessment of genetic risk rely heavily on criteria with high variability such as family cancer history. Here we investigated the efficacy of MRI (magnetic resonance imaging) texture features as a predictor for BRCA mutation status. Methods A total of 41 female breast cancer individuals at high genetic risk, sixteen with a BRCA1/2 pathogenic variant and twenty five controls were included. From each MRI 4225 computer-extracted voxels were analyzed. Non-imaging features including clinical, family cancer history variables and triple negative receptor status (TNBC) were complementarily used. Lasso-principal component regression (L-PCR) analysis was implemented to compare the predictive performance, assessed as area under the curve (AUC), when imaging features were used, and lasso logistic regression or conventional logistic regression for the remaining analyses. Results Lasso-selected imaging principal components showed the highest predictive value (AUC 0.86), surpassing family cancer history. Clinical variables comprising age at disease onset and bilateral breast cancer yielded a relatively poor AUC (~ 0.56). Combination of imaging with the non-imaging variables led to an improvement of predictive performance in all analyses, with TNBC along with the imaging components yielding the highest AUC (0.94). Replacing family history variables with imaging components yielded an improvement of classification performance of ~ 4%, suggesting that imaging compensates the predictive information arising from family cancer structure. Conclusions The L-PCR model uncovered evidence for the utility of MRI texture features in distinguishing between BRCA1/2 positive and negative high-risk breast cancer individuals, which may suggest value to diagnostic routine. Integration of computer-extracted texture analysis from MRI modalities in prediction models and inclusion criteria might play a role in reducing false positives or missed cases especially when established risk variables such as family history are missing.

Item Type:Article
ISSN:1471-2342
Uncontrolled Keywords:Breast cancer; HBOC; MRI; Texture analysis; BRCA1/2; L-PCR
Group:Faculty of Health & Social Sciences
ID Code:39585
Deposited By: Symplectic RT2
Deposited On:11 Mar 2024 13:56
Last Modified:11 Mar 2024 13:56

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