Table 1.
The main features of included studies for this meta-analysis
| Researcher | Year | Country | Cancer/normal | Methods | Sample |
|---|---|---|---|---|---|
| TCGA | 2019 | USA | 523/44 | qPCR | Tissue |
| GSE11163 | 2012 | USA | 16/5 | qPCR | Tissue |
| GSE103931 | 2018 | Taiwan | 30/19 | qPCR | Tissue |
| GSE107591 | 2018 | USA | 24/23 | qPCR | Tissue |
| GSE113956 | 2019 | China | 25/15 | qPCR | Tissue |
| GSE28100 | 2015 | USA | 17/3 | qPCR | Tissue |
| GSE31277 | 2018 | Brazil | 15/15 | qPCR | Tissue |
| GSE34496 | 2017 | USA | 44/25 | qPCR | Tissue |
| GSE45238 | 2019 | USA | 40/40 | qPCR | Tissue |
| GSE51829 | 2013 | China | 4/4 | qPCR | Tissue |
| GSE58911 | 2018 | USA | 15/15 | qPCR | Tissue |
| GSE69002 | 2017 | USA | 3/4 | qPCR | Tissue |
| GSE70289 | 2018 | USA | 12/4 | qPCR | Tissue |
| GSE73171 | 2017 | Hong Kong | 3/3 | qPCR | Tissue |
| GSE75630 | 2016 | Australia | 28/18 | qPCR | Tissue |
| GSE82064 | 2017 | Switzerland | 78/18 | qPCR | Tissue |
| GSE98463 | 2018 | Spain | 8/8 | qPCR | Tissue |
| Zhou Cheng. et al | 2019 | China | 26/26 | qPCR | Tissue |