After combining the seven studies [26,32,35,36,40,43,45] that examined tumor size, we also observed a statistically significant effect of high EGFR levels on tumor sizes ≥4 cm, with a combined OR of 1.64 (95% CI: 1.20–2.23) and no significant heterogeneity (I2 = 0.00%, Ph = 0.935). The gene discussed is EGFR; the disease is neoplasm.