Just as in our study, SLC26A7 expression has been found to be significantly downregulated in patients with anaplastic thyroid carcinoma [26]; moreover, according to ref. [39], in PTC, SLC26A7 downregulation correlates with an elevated risk of metastases outside the thyroid. The gene discussed is SLC26A7; the disease is thyroid gland undifferentiated (anaplastic) carcinoma.