J Cancer 2021; 12(4):1240-1248. doi:10.7150/jca.51179 This issue

Research Paper

Prognostic significance of KRT19 in Lung Squamous Cancer

Xun Yuan1, Ming Yi1, Bing Dong2, Qian Chu1, Kongming Wu1,2✉

1. Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan 430030, P.R. China.
2. Department of Molecular Pathology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China.

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Yuan X, Yi M, Dong B, Chu Q, Wu K. Prognostic significance of KRT19 in Lung Squamous Cancer. J Cancer 2021; 12(4):1240-1248. doi:10.7150/jca.51179. Available from https://www.jcancer.org/v12p1240.htm

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Backgroud: Keratin 19 (KRT19) is the intermediate filament that constitutes the cytoskeleton and regulates cell-cycle and cell death.

Objective: We aimed to assess whether KRT19 was involved in lung cancer development.

Methods: The expression of KRT19 in lung cancer was evaluated from mRNA expression on open databse and protein abundance on tumor tissue array.

Results: Using open microarray gene expression datasets and differential expression analysis, we found that KRT19 was upregulated in lung cancer compared with normal tissue. Further analysis suggested that KRT19 mRNA expression was correlated with tumor progression and overall survival in lung cancer patients. As KRT19 was overexpressed in adenocarcinoma (AC) and squamous cell carcinoma (SCC), we examined the prognostic value of KRT19 protein abundance by tissue microarray (TMA). The results suggested that protein expression of KRT19 was significantly associated with overall survival of SCC.

Conclusions: Giving the prognostic role of KRT19 in lung cancer, KRT19 could be considered as an potential molecular marker in lung cancer, especially in SCC.

Keywords: KRT19, lung cancer, squamous cell carcinoma, prognosis