We revealed here that both higher expression of the amino acid transporter ASCT2 and augmented autophagic activity contributed to higher amounts of amino acids in XTC.UC1 cells, although overexpression of LAT1 and ASCT2 have previously been reported even in non-oncocytic thyroid cancer cells and are correlated with poor patient prognosis48–51. The gene discussed is SLC7A5; the disease is thyroid cancer.