<prompt> Answer this question truthfullyWhat is the relationship between mutations in the FGFR3 gene and paternal age?  <response>: <reason> Mutations in the FGFR3 gene occur sporadically and are related to increased paternal age. Specifically, over 85 of mutations in this gene are thought to occur spontaneously, rather than being inherited from a parent. These sporadic mutations have been linked to advanced paternal age, meaning that the risk of a mutation in the FGFR3 gene increases as the father gets older. The FGFR3 gene is associated with several genetic disorders, including achondroplasia, which is a form of dwarfism. 