Published in:
01-06-2015 | Research Letter
Hypogonadotropic hypogonadism in a female patient previously diagnosed as having waardenburg syndrome due to a sox10 mutation
Authors:
Yoko Izumi, Ikuma Musha, Erina Suzuki, Manami Iso, Tomoko Jinno, Reiko Horikawa, Shin Amemiya, Tsutomu Ogata, Maki Fukami, Akira Ohtake
Published in:
Endocrine
|
Issue 2/2015
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Excerpt
Hypogonadotropic hypogonadism (HH) is a clinically and genetically heterogeneous condition that can be associated with several additional clinical features such as anosmia, cleft palate, and hearing loss [
1]. HH with anosmia is referred to as Kallmann syndrome (KS). More than 20 genes are known to underlie HH and/or KS, although mutations in these genes account for only a minor portion of the etiology of HH/KS [
1‐
4]. In 2013, Pingault et al. identified
SOX10 mutations in seven patients with KS [
5]. Furthermore, Pingault et al. found that genetic knockout of
Sox10 disrupted migration of GnRH cells in murine fetuses [
5]. Subsequently, Vaaralahti et al. identified an additional KS patient with a
SOX10 mutation [
6]. These results indicate that
SOX10 mutations constitute rare genetic causes of KS. Currently,
SOX10 is known as one of the causative genes of Waardenburg syndrome (WS), a rare genetic disorder characterized by hearing loss and hypopigmentation in the skin, hair, and eye [
7]. Indeed, hearing impairment with or without gray/white hair was found in most of the KS cases reported by Pingault et al. and Vaaralahti et al. [
5,
6]. However, detailed clinical assessment of the
SOX10 mutation-positive patients and functional assays of the
SOX10 mutants remain fragmentary. Thus, genetic links between HH/KS and WS have not been fully established. Here, we performed molecular and clinical analyses of a previously reported patient with WS due to a frameshift mutation in
SOX10. …