Cancer Research and Treatment

Original Article

Lung cancer

Genetic Alterations in Preinvasive Lung Synchronous Lesions: Soyeon Ahn, Jisun Lim, Soo Young Park, Hyojin Kim, Hyun Jung Kwon, Yeon Bi Han, Choon-Taek Lee, Sukki Cho, Jin-Haeng Chung; Cancer Res Treat. 2020;52(4):1120-1134. Published online June 5, 2020; DOI: https://doi.org/10.4143/crt.2020.307

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Purpose
Despite advances in treatment, lung cancer remains the leading cause of cancer mortality. This study aimed to characterise genome-wide tumorigenesis events and to understand the hypothesis of the multistep carcinogenesis of lung adenocarcinoma (LUAD)
Materials and Methods
We conducted multiregion whole-exome sequencing of LUAD with synchronous atypical adenomatous hyperplasia (AAH), adenocarcinoma in situ, or minimally invasive adenocarcinoma of 19 samples from three patients to characterize genome-wide tumorigenesis events and validate the hypothesis of the multistep carcinogenesis of LUAD. We identified potential pathogenic mutations preserved in preinvasive lesions and supplemented the finding by allelic variant level from RNA sequencing.
Results
Overall, independent mutational profiles were observed per patient and between patients. Some shared mutations including epidermal growth factor receptor (EGFR , p.L858R) were present across synchronous lesions.
Conclusion
Here, we show that there are driver gene mutations in AAH, and they may exacerbate as a sequence in a histological continuum, supporting the Darwinian evolution model of cancer genome. The intertumoral and intratumoral heterogeneity of synchronous LUAD implies that multi-biomarker strategies might be necessary for appropriate treatment.

Citations

Citations to this article as recorded by

Gene Expression Profiles of Multiple Synchronous Lesions in Lung Adenocarcinoma
Jisun Lim, Yeon Bi Han, Soo Young Park, Soyeon Ahn, Hyojin Kim, Hyun Jung Kwon, Choon-Taek Lee, Sukki Cho, Jin-Haeng Chung
Cells.2021; 10(12): 3484. CrossRef

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