Comprehensive cross cancer analyses reveal mutational signature cancer specificity

Rui Xin, Limin Jiang, Hui Yu, Fengyao Yan, Jijun Tang, Yan Guo

Quant. Biol. ›› 2024, Vol. 12 ›› Issue (3) : 245-254.

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Quant. Biol. ›› 2024, Vol. 12 ›› Issue (3) : 245-254. DOI: 10.1002/qub2.49
RESEARCH ARTICLE

Comprehensive cross cancer analyses reveal mutational signature cancer specificity

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Abstract

Mutational signatures refer to distinct patterns of DNA mutations that occur in a specific context or under certain conditions. It is a powerful tool to describe cancer etiology. We conducted a study to show cancer heterogeneity and cancer specificity from the aspect of mutational signatures through collinearity analysis and machine learning techniques. Through thorough training and independent validation, our results show that while the majority of the mutational signatures are distinct, similarities between certain mutational signature pairs can be observed through both mutation patterns and mutational signature abundance. The observation can potentially assist to determine the etiology of yet elusive mutational signatures. Further analysis using machine learning approaches demonstrated moderate mutational signature cancer specificity. Skin cancer among all cancer types demonstrated the strongest mutational signature specificity.

Keywords

cancer specificity / collinearity analysis / DNA mutational signatures / machine learning

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Rui Xin, Limin Jiang, Hui Yu, Fengyao Yan, Jijun Tang, Yan Guo. Comprehensive cross cancer analyses reveal mutational signature cancer specificity. Quant. Biol., 2024, 12(3): 245‒254 https://doi.org/10.1002/qub2.49
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2024 2024 The Author(s). Quantitative Biology published by John Wiley & Sons Australia, Ltd on behalf of Higher Education Press.
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