Abstract
Purpose
To understand the association between genetic mutations and radiomics of 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG) positron emission tomography (PET)/x-ray computed tomography (CT) in patients with colorectal cancer (CRC).
Procedures
This study included 74 CRC patients who had undergone preoperative [18F]FDG PET/CT. A total of 65 PET/CT-related features including intensity, volume-based, histogram, and textural features were calculated. High-resolution melting methods were used for genetic mutation analysis.
Results
Genetic mutants were found in 21 KRAS tumors (28 %), 31 TP53 tumors (42 %), and 17 APC tumors (23 %). Tumors with a mutated KRAS had an increased value at the 25th percentile of maximal standardized uptake value (SUVmax) within their metabolic tumor volume (MTV) (P < .0001; odds ratio [OR] 1.99; 95 % confidence interval [CI] 1.37–2.90) and their contrast from the gray-level cooccurrence matrix (P = .005; OR 1.52; 95 % CI 1.14–2.04). A mutated TP53 was associated with an increased value of short-run low gray-level emphasis derived from the gray-level run length matrix (P = .001; OR 243006.0; 95 % CI 59.2–996,872,313). APC mutants exhibited lower low gray-level zone emphasis derived from the gray-level zone length matrix (P = .006; OR < .0001; 95 % CI 0.000–0.22).
Conclusion
PET/CT-derived radiomics can provide supplemental information to determine KRAS, TP53, and APC genetic alterations in CRC.
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Acknowledgments
This work was supported by grants from the Ministry of Health and Welfare, Taiwan (MOHW107-TDU-B-212-123004), China Medical University Hospital; Academia Sinica Stroke Biosignature Project (BM10701010021); MOST Clinical Trial Consortium for Stroke (MOST 106-2321-B-039-005-); Tseng-Lien Lin Foundation, Taichung, Taiwan; and Katsuzo and Kiyo Aoshima Memorial Funds, Japan, China Medical University Hospital (CRS-106-039, CRS-106-041). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. No additional external funding was received for this study.
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All authors have contributed substantially to, and are in agreement with the content of, the manuscript: conception/design: Shang-Wen Chen, Chia-Hung Kao; provision of study materials: Chia-Hung Kao, Jan-Gowth Chang; collection and/or assembly of data: Shang-Wen Chen, Wei-Chih Shen, William Tzu-Liang Chen, Te-Chun Hsieh, Kuo-Yang Yen, Jan-Gowth Chang, Chia-Hung Kao; data analysis and interpretation: Shang-Wen Chen, Wei-Chih Shen, William Tzu-Liang Chen, Te-Chun Hsieh, Kuo-Yang Yen, Jan-Gowth Chang, Chia-Hung Kao; manuscript preparation: Shang-Wen Chen, Wei-Chih Shen, William Tzu-Liang Chen, Te-Chun Hsieh, Kuo-Yang Yen, Jan-Gowth Chang, Chia-Hung Kao; final approval of manuscript: Shang-Wen Chen, Wei-Chih Shen, William Tzu-Liang Chen, Te-Chun Hsieh, Kuo-Yang Yen, Jan-Gowth Chang, Chia-Hung Kao. The guarantor of the paper, taking responsibility for the integrity of the work as a whole, from inception to published article: Chia-Hung Kao.
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The study was approved by the local institutional review board (certificate numbers CMUH102-REC2-74 and DMR99-IRB-010-1).
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The authors declare that they have no conflict of interest.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Chen, SW., Shen, WC., Chen, W.TL. et al. Metabolic Imaging Phenotype Using Radiomics of [18F]FDG PET/CT Associated with Genetic Alterations of Colorectal Cancer. Mol Imaging Biol 21, 183–190 (2019). https://doi.org/10.1007/s11307-018-1225-8
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DOI: https://doi.org/10.1007/s11307-018-1225-8