In contrast, no difference either in NIS or in any other thyroid differentiation genes' mRNA expression was found in PTC with or without RET/PTC rearrangements.     ///    "BRAFV600E mutation, but not RET/PTC rearrangements, is correlated with a lower expression of both thyroperoxidase and sodium iodide symporter genes in papillary thyroid cancer.. "    ///    We found BRAFV600E and RET/PTC rearrangements in 35.8 and 19.4% of PTCs respectively.     ///    "In the present study, we analyzed the mRNA expression of thyroid differentiation genes, glucose transporter (GLUT)-1 and GLUT-3, in 78 PTCs according to the presence of BRAFV600E or RET/PTC rearrangements. "    ///    "When GLUT-1 and GLUT-3 mRNA expression was considered, no correlation was found either in BRAFV600E- nor in RET/PTC-mutated cases. "