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Artificial Intelligence Detected the Relationship Between Nuclear Morphological Features and Molecular Abnormalities of Papillary Thyroid Carcinoma

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Abstract

Papillary thyroid carcinoma (PTC) is the most common type of thyroid carcinoma and has characteristic nuclear features. Genetic abnormalities of PTC affect recent molecular target therapeutic strategy towards RET-altered cases, and they affect clinical prognosis and progression. However, there has been insufficient objective analysis of the correlation between genetic abnormalities and nuclear features. Using our newly developed methods, we studied the correlation between nuclear morphology and molecular abnormalities of PTC with the aim of predicting genetic abnormalities of PTC. We studied 72 cases of PTC and performed genetic analysis to detect BRAF p.V600E mutation and RET fusions. Nuclear features of PTC, such as nuclear grooves, pseudo-nuclear inclusions, and glassy nuclei, were also automatically detected by deep learning models. After analyzing the correlation between genetic abnormalities and nuclear features of PTC, logistic regression models could be used to predict gene abnormalities. Nuclear features were accurately detected with over 0.90 of AUCs in every class. The ratio of glassy nuclei to nuclear groove and the ratio of pseudo-nuclear inclusion to glassy nuclei were significantly higher in cases that were positive for RET fusions (p = 0.027, p = 0.043, respectively) than in cases that were negative for RET fusions. RET fusions were significantly predicted by glassy nuclei/nuclear grooves, pseudo-nuclear inclusions/glassy nuclei, and age (p = 0.023). Our deep learning models could accurately detect nuclear features. Genetic abnormalities had a correlation with nuclear features of PTC. Furthermore, our artificial intelligence model could significantly predict RET fusions of classic PTC.

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Data Availability

The datasets generated and analyzed for this study are available from the corresponding author upon reasonable request.

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Acknowledgements

We acknowledge proofreading and editing by Benjamin Phillis at the Clinical Study Support Center at Wakayama Medical University.

Funding

This study was partly supported by Grant-in-Aid for Scientific Research C (19K07466), supported by the Japan Society for the Promotion of Science.

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Authors

Contributions

T.N. made substantial contributions to the design and interpretation of the report. I.M. and A.T. significantly contributed to genetic analysis. R.I., F.Y.M., K.S., M.N., Y.M., and Y.T. contributed to pathological analysis. F.K. and S.M. significantly contributed to the validation of the manuscript.

Corresponding author

Correspondence to Shin-ichi Murata.

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The Wakayama Medical University Institutional Review Board approved this study (No.3212).

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Nishikawa, T., Matsuzaki, I., Takahashi, A. et al. Artificial Intelligence Detected the Relationship Between Nuclear Morphological Features and Molecular Abnormalities of Papillary Thyroid Carcinoma. Endocr Pathol 35, 40–50 (2024). https://doi.org/10.1007/s12022-023-09796-8

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