Table 2. Characteristics of the participants.
| Author | Expression (high/low) | Gender (male/total) | Age (years, mean ± SD) | Age (percentage of the older) | Cancer type | Control group | Survival outcome | Survival analysis |
|---|---|---|---|---|---|---|---|---|
| Shi et al. | 69/61 | 81/130 | – | 66.2% | Gastric cancer | High vs. low | OS | Multivariate analysis |
| Ji et al. | 80/64 | 89/144 | – | 60.4% | Hepatocellular carcinoma | High vs. low | OS | Multivariate analysis |
| Liu et al._GC | 43/15 | 29/58 | – | 58.6% | Gastric cancer | High vs. low | OS and RFS | Univariate and multivariate analysis |
| Liu et al._EC | 45/20 | 35/65 | – | 49.2% | Esophageal cancer | High vs. low | ||
| Liu et al._CC | 43/17 | 27/60 | – | 53.3% | Colorectal cancer | High vs. low | ||
| Ning et al. | 52/48 | 69/100 | – | 48.0% | Intrahepatic cholangiocarcinoma | High vs. low | OS | Univariate and multivariate analysis |
| Noguchi et al. | 63/40 | 64/103 | 67.2±9.6 | – | Pancreatic ductal adenocarcinoma | High vs. low | OS and DFS | Univariate and multivariate analysis |
| Wang et al. | 68/82 | 76/150 | 48±11 | – | Human glioma | High vs. low | OS and PFS | Univariate analysis |
| Bernhardt et al. | 400/401 | NR | 62.3±13.7 | – | Breast cancer | High vs. low | OS and RFS | Univariate and multivariate analysis |
| Miyo et al. | 89/88 | 71/117 | – | 51.3% | Colorectal cancer | High vs. low | OS and RFS | Univariate and multivariate analysis |
| Zhang et al. | 95/33 | NR | – | 50.0% | Breast cancer | High vs. low | OS and PFS | Univariate and multivariate analysis |
| Wu et al. | 51/35 | 64/86 | – | 66.3% | Hepatocellular carcinoma | High vs. low | OS and PFS | Univariate analysis |
GC, gastric cancer; EC, esophageal cancer; CC, colorectal cancer; SD, standard derivation; OS, overall survival; PFS, progression-free survival; DFS, disease-free survival; RFS, recurrence-free survival; NR, not reported.