TP53 and thymoma: The TP53 mutation rate is comparatively higher in TCs (the pooled estimated rate is 0.1797 [0.0732; 0.3203], random effect model) than in thymomas according to the 16 articles that reported on the TP53 mutation rates, while a high heterogeneity is observed in this group (I2 = 91%, p < 0.0001) (see Figure 7A for the forest plot and Figure 7B for the funnel plot).