The more common genetic abnormalities found in PTC are the radio-induced RET/PTC rearrangements and the mutations of BRAF and RAS genes, while PAX8/PPARγ fusion gene and the loss of heterozigosity (LOH) on 3p and 7q loci as well as RAS mutations are frequently encountered in FTC. Here, RET is linked to thyroid cancer, nonmedullary, 2.