Mutation profile of non-small cell lung cancer revealed by next generation sequencing

Autor: Ya-Sian Chang, Siang-Jyun Tu, Yu-Chia Chen, Ting-Yuan Liu, Ya-Ting Lee, Ju-Chen Yen, Hsin-Yuan Fang, Jan-Gowth Chang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Respiratory Research, Vol 22, Iss 1, Pp 1-10 (2021)
Druh dokumentu: article
ISSN: 1465-993X
54264480
DOI: 10.1186/s12931-020-01608-5
Popis: Abstract Background Precision therapy for lung cancer requires comprehensive genomic analyses. Specific effects of targeted therapies have been reported in Asia populations, including Taiwanese, but genomic studies have rarely been performed in these populations. Method We enrolled 72 patients with non-small cell lung cancer, of whom 61 had adenocarcinoma, 10 had squamous cell carcinoma, and 1 had combined adenocarcinoma and squamous cell carcinoma. Whole-exome or targeted gene sequencing was performed. To identify trunk mutations, we performed whole-exome sequencing in two tumor regions in four patients. Results Nineteen known driver mutations in EGFR, PIK3CA, KRAS, CTNNB1, and MET were identified in 34 of the 72 tumors evaluated (47.22%). A comparison with the Cancer Genome Atlas dataset showed that EGFR was mutated at a much higher frequency in our cohort than in Caucasians, whereas KRAS and TP53 mutations were found in only 5.56% and 25% of our Taiwanese patients, respectively. We also identified new mutations in ARID1A, ARID2, CDK12, CHEK2, GNAS, H3F3A, KDM6A, KMT2C, NOTCH1, RB1, RBM10, RUNX1, SETD2, SF3B1, SMARCA4, THRAP3, TP53, and ZMYM2. Moreover, all ClinVar pathogenic variants were trunk mutations present in two regions of a tumor. RNA sequencing revealed that the trunk or branch genes were expressed at similar levels among different tumor regions. Conclusions We identified novel variants potentially associated with lung cancer tumorigenesis. The specific mutation pattern in Taiwanese patients with non-small cell lung cancer may influence targeted therapies.
Databáze: Directory of Open Access Journals
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