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Association of high proliferation marker Ki-67 expression with DCEMR imaging features of breast: A large scale evaluation

Publication ,  Conference
Saha, A; Harowicz, MR; Grimm, LJ; Kim, CE; Ghate, SV; Walsh, R; Mazurowski, MA
Published in: Progress in Biomedical Optics and Imaging - Proceedings of SPIE
January 1, 2018

One of the methods widely used to measure the proliferative activity of cells in breast cancer patients is the immunohistochemical (IHC) measurement of the percentage of cells stained for nuclear antigen Ki-67. Use of Ki-67 expression as a prognostic marker is still under investigation. However, numerous clinical studies have reported an association between a high Ki-67 and overall survival (OS) and disease free survival (DFS). On the other hand, to offer non-invasive alternative in determining Ki-67 expression, researchers have made recent attempts to study the association of Ki-67 expression with magnetic resonance (MR) imaging features of breast cancer in small cohorts (<30). Here, we present a large scale evaluation of the relationship between imaging features and Ki-67 score as: (a) we used a set of 450 invasive breast cancer patients, (b) we extracted a set of 529 imaging features of shape and enhancement from breast, tumor and fibroglandular tissue of the patients, (c) used a subset of patients as the training set to select features and trained a multivariate logistic regression model to predict high versus low Ki-67 values, and (d) we validated the performance of the trained model in an independent test set using the area-under the receiver operating characteristics (ROC) curve (AUC) of the values predicted. Our model was able to predict high versus low Ki-67 in the test set with an AUC of 0.67 (95% CI: 0.58-0.75, p<1.1e-04). Thus, a moderate strength of association of Ki-67 values and MRextracted imaging features was demonstrated in our experiments.

Duke Scholars

Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

ISBN

9781510616394

Publication Date

January 1, 2018

Volume

10575
 

Citation

APA
Chicago
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MLA
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Saha, A., Harowicz, M. R., Grimm, L. J., Kim, C. E., Ghate, S. V., Walsh, R., & Mazurowski, M. A. (2018). Association of high proliferation marker Ki-67 expression with DCEMR imaging features of breast: A large scale evaluation. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 10575). https://doi.org/10.1117/12.2293207
Saha, A., M. R. Harowicz, L. J. Grimm, C. E. Kim, S. V. Ghate, R. Walsh, and M. A. Mazurowski. “Association of high proliferation marker Ki-67 expression with DCEMR imaging features of breast: A large scale evaluation.” In Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol. 10575, 2018. https://doi.org/10.1117/12.2293207.
Saha A, Harowicz MR, Grimm LJ, Kim CE, Ghate SV, Walsh R, et al. Association of high proliferation marker Ki-67 expression with DCEMR imaging features of breast: A large scale evaluation. In: Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2018.
Saha, A., et al. “Association of high proliferation marker Ki-67 expression with DCEMR imaging features of breast: A large scale evaluation.” Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 10575, 2018. Scopus, doi:10.1117/12.2293207.
Saha A, Harowicz MR, Grimm LJ, Kim CE, Ghate SV, Walsh R, Mazurowski MA. Association of high proliferation marker Ki-67 expression with DCEMR imaging features of breast: A large scale evaluation. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2018.

Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

ISBN

9781510616394

Publication Date

January 1, 2018

Volume

10575