FGFR1 and Kallmann syndrome: The Fgfr1 gene has also been implicated in human conditions including Kallmann Syndrome (Anosmia and hypogonadotropic hypogonadism) and a craniostenosis syndrome, Pfeiffer syndrome (Villanueva & De Roux, 2010; Robin, Falk & Haldeman-Englert, 1998; Dodé et al., 2003).