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Long noncoding RNA HOXD-AS1 in various cancers: a meta-analysis and TCGA data review

Authors Zhang FH, Chen XW, Xi KH, Qiu ZQ, Wang YH, Gui Y, Hou Y, Chen KB, Zhang XB

Received 17 August 2018

Accepted for publication 1 October 2018

Published 5 November 2018 Volume 2018:11 Pages 7827—7840


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Prof. Dr. Takuya Aoki

Fuhong Zhang, Xiaowan Chen, Kehu Xi, Zhiqiang Qiu, Youhu Wang, Yan Gui, Yun Hou, Kangbing Chen, Xiaobing Zhang

Department of Otolaryngology Head and Neck Surgery, First Hospital of Lanzhou University, Lanzhou, Gansu, People’s Republic of China

Background and aims: HOXD antisense growth-associated long noncoding RNA (HOXD-AS1) was reported to be upregulated in various cancers, such as gastric cancer, hepatocellular carcinoma, colorectal cancer, and glioma. Here, we conducted a meta-analysis and The Cancer Genome Atlas data review to investigate the clinicopathologic and prognostic value of HOXD-AS1 in patients with malignant tumors.
Materials and methods: Systematic literatures were searched from PubMed, Medline, Cochrane Library, Web of Science, EMBASE database, Ovid, Chinese CNKI, and the Chinese WanFang database. The role of HOXD-AS1 in cancers was evaluated by pooled ORs and HRs with 95% CIs. The Cancer Genome Atlas dataset was used to explore the prognostic value of HOXD-AS1 in various cancers.
Results: Fifteen studies with 1,678 patients were included in this meta-analysis. The results indicated that HOXD-AS1 was associated with tumor size, differentiation, lymph node metastasis, and TNM stage. Moreover, the high HOXD-AS1 expression indicated a poor overall survival (OS) rate and can be an independent predictive factor for OS. The TCGA dataset, which included 9,502 cancer patients, showed that the expression of HOXD-AS1 was related to poor OS and disease-free survival. We also analyzed the prognostic role in different kinds of cancers such as digestive cancers, female reproductive system cancers, respiratory system cancers, and urinary system cancers.
Conclusion: This study demonstrated that HOXD-AS1 was closely correlated with tumor size, lymph node metastasis, distant metastasis, and TNM stage, and an increased HOXD-AS1 expression could be a reliable prognostic biomarker in human cancers. However, more studies are needed to confirm this conclusion.

Keywords: lncRNA HOXD-AS1, neoplasm, prognosis, meta-analysis, TCGA cohort

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