BRD4 and thyroid gland carcinoma: In TPC-1 cells (Figure 3G–3I) and “C1” primary thyroid carcinoma cells (Figure 3J–3L), ARV-825 was significantly more potent than the tested BRD4 inhibitors (at even higher concentrations) in inhibiting cell viability (Figure 3G and 3J) and proliferation (EdU incorporation, Figure 3H and 3K) as well as inducing cell apoptosis (nuclear TUNEL staining, Figure 3I and 3L).