FAP and cancer: However, our analysis showed no statistically significant association between high FAP-α expression and neural invasion (OR: 1.57, 95% CI: 0.84-2.93, <i>I</i> <sup>2</sup> = 38%, <i>P</i> = 0.161).<h4>Conclusions</h4>This meta-analysis indicated that cancer cells with a high FAP-α expression have a higher risk of metastasis than those with a low FAP-α expression.