HDAC5 and thymic carcinoma: Epithelial rich TETs (namely B3-type and thymic carcinomas) displayed positive cytoplasmic HDAC5 staining more often (Fisher’s exact test, p = 0.022, 37% vs. 13%), and a higher cytoplasmic HDAC5 H-score, compared to the rest of the WHO types (Mann–Whitney, p = 0.002, median value 160 vs. 20, Figure 6A).