IL17A and cancer: In stratified analyses by cancer types, as shown in Figure 3, pooled results showed that IL-17A overexpression was significantly associated with decreased OS at 1-year (OR = 3.37, 95% CI 2.21 to 5.15, P = 0.000), 3-year (OR = 3.19, 95% CI 2.05 to 4.94, P = 0.000) and 5-year (HR = 3.51, 95% CI 2.34 to 5.25, P = 0.000) in hepatic cancer and 1-year OS in non-small cell lung cancer (NSCLC) (OR = 14.30, 95% CI 2.55 to 80.22, P = 0.002).