FGFR3 gene mutations change single amino acids in the FGFR3 protein, which appears to overactivate protein signaling. As a result, bladder cells are likely directed to grow and divide abnormally. This uncontrolled cell division leads to the formation of bladder cancer. More About This Health Condition.
What is FGFR3 antibody?
One of the receptors, FGFR3, is known to be involved in nerve regeneration and axonal development [6]. The intracellular domain of FGFR3 was found to be a target of IgG antibodies in a subgroup of patients with sensory neuropathy, particularly in idiopathic or autoimmune-related cases [7].
What is the normal function of FGFR3?
It is proposed that the normal function of FGFR3 is to slow down the formation of bone by inhibiting the proliferation of chondrocytes, the cells that produce cartilage. The mutation increases the activity of FGFR3, severely limiting bone growth.
What causes FGFR3 mutation?
Only a single copy of the mutated FGFR3 gene results in achondroplasia. It is generally caused by spontaneous mutations in germ cells; roughly 80 percent of the time, parents with children that have this disorder are normal size.
Where is the FGFR3 protein located?
Fibroblast growth factor receptor 3 is a protein that in humans is encoded by the FGFR3 gene. FGFR3 has also been designated as CD333 (cluster of differentiation 333). The gene, which is located on chromosome 4, location p16. 3, is expressed in tissues such as the cartilage, brain, intestine, and kidneys.
What happens if a human has mutations in HOXD13?
It has been shown that mutations in human HOXD13 can give rise to limb malformations, with variable expressivity and a wide spectrum of clinical manifestations. Polyalanine expansions in HOXD13 cause synpolydactyly, whereas amino acid substitutions in the homeodomain are associated with brachydactyly types D and E.
