The results of flow cytometry‐based measurement of apoptosis and necrosis using Annexin V‐FITC/PI staining further confirmed overexpression of BRAF V600E rather than BRAF WT attenuated death in papillary and anaplastic thyroid cancer cells exposed to STS (Figure 4D,F). This evidence concerns the gene BRAF and thyroid gland undifferentiated (anaplastic) carcinoma.