NCIt definition : Human RET Oncoprotein is a product of mutated variants (Oncogene RET) of RET Gene,
which encodes Tyrosine-Protein Kinase Receptor RET, a type I membrane protein receptor
for Glial Cell Line-Derived with an extracellular cadherin-like domain and important
in neural crest development. Some oncogenic RET point mutations cause constitutive
kinase activation. PTC1 oncogene involves fusion of RET kinase to the H4 dimerization
leucine zipper. In PTC6, RET is fused to the N-terminal part of Transcriptional Intermediary
Factor-1-Alpha. In PTC7, RET is fused to a C-terminal part of TIF1-Gamma. Oncogenic
RET mutations are associated with Hirschsprung's disease, Multiple Endocrine Neoplasia,
pheochromocytoma, hyperparathyroidism and medullary thyroid cancer. RET Oncoprotein
disrupts normal cell function.;