Fig. 2
Meta-analysis of Gene Expression Omnibus (GEO) data. A Forest plot of GEO chips. The standard mean deviation is 0.99 (95% CI: 0.76, 1.61) with great heterogeneity (I2 = 56%, p = 0.01) showing that KAZN expression was markedly up-regulated in the ovarian cancer tissues. B Sensitivity analysis of GEO chips (p < 0.001). C A funnel plot for evaluating the publication bias of GEO chips (z = − 0.86, p = 0.3918)