Coexistence of atypical adenomatous hyperplasia, minimally invasive adenocarcinoma and invasive adenocarcinoma: Gene mutation analysis. Issue 5 (14th January 2021)

• Record Type: Journal Article
• Authors: Song, Junya; Xu, Yinghui; Yang, Zhiguang; Liu, Yunpeng; Zhang, Peng; Wang, Xu; Sun, Chao; Guo, Ye; Qiu, Shi; Shao, Guoguang; Ma, Kewei
• Is Part Of: Thoracic cancer. Volume 12:Issue 5(2021)
• Page Start: 693
• Page End: 698
• Publication Date: 2021-01-14
• Subjects: Multiple primary lung cancer (MPLC) -- mutation spectrum -- phylogenetic tree -- tumor mutation burden (TMB) -- whole exome sequencing (WES); Chest -- Cancer -- Periodicals; Chest -- Cancer -- Treatment -- Periodicals; Chest -- Surgery -- Periodicals; 616.99494005
• DOI: 10.1111/1759-7714.13798
• Languages: English
• ISSNs: 1759-7706

Abstract

Abstract: Multiple primary lung cancer (MPLC) refers to the simultaneous occurrence of two or more lung primary malignant tumors in one individual. The detection rate of MPLC has increased significantly in recent years, and the distinction between MPLC and lung metastasis has strong clinical significance. Whole exome sequencing (WES) can clearly identify the heterogeneity between MPLC nodules. Here, we report a case of a 50‐year‐old Asian female without a history of smoking. She underwent a lung computed tomography (CT) scan and three ground‐glass nodules (GGNs) were found which were pathologically confirmed as atypical adenomatous hyperplasia (AAH), minimally invasive adenocarcinoma (MIA) and invasive adenocarcinoma (IA), respectively. We performed WES on the three pulmonary nodules and analyzed the sequencing results. We believe that this is the first published report of a case of "three phases" of lung adenocarcinoma analyzed by WES. Under the same genetic background and internal environment, these three nodules showed significant genetic differences and developed into "three phases" of lung adenocarcinoma. Analysis of the WES results supported the lung adenocarcinoma model from AAH to MIA and IA, and explored possible potential driver genes and therapeutic targets. Key points: Significant findings of the study: We used WES to analyze the gene mutation status of three tumors in one individual. We found that even if under the same genetic background, AAH, MIA and IA showed significant genetic differences and developed into "three phases" of lung adenocarcinoma. What this study adds: Analysis of the WES results supported the lung adenocarcinoma model from AAH to MIA and IA, and explored possible potential driver genes and therapeutic targets. Abstract : We analyzed the origin and evolution of lung adenocarcinoma based on the WES results of MPLC in one individual. Analysis of the WES results reflects a progressive genomic evolution at the single nucleotide level, which we believe supports the lung adenocarcinoma model from AAH to MIA and ADC. Meanwhile, we explored possible potential driver genes and therapeutic targets.