LRIG2 mutations cause urofacial syndrome.

Urofacial syndrome (UFS) (or Ochoa syndrome) is an autosomal-recessive disease characterized by congenital urinary bladder dysfunction, associated with a significant risk of kidney failure, and an abnormal facial expression upon smiling, laughing, and crying. We report that a subset of UFS-affected individuals have biallelic mutations in LRIG2, encoding leucine-rich repeats and immunoglobulin-like domains 2, a protein implicated in neural cell signaling and tumorigenesis. Importantly, we have demonstrated that rare variants in LRIG2 might be relevant to nonsyndromic bladder disease. We have previously shown that UFS is also caused by mutations in HPSE2, encoding heparanase-2. LRIG2 and heparanase-2 were immunodetected in nerve fascicles growing between muscle bundles within the human fetal bladder, directly implicating both molecules in neural development in the lower urinary tract.
AuthorsHelen M Stuart, Neil A Roberts, Berk Burgu, Sarah B Daly, Jill E Urquhart, Sanjeev Bhaskar, Jonathan E Dickerson, Murat Mermerkaya, Mesrur Selcuk Silay, Malcolm A Lewis, M Beatriz Orive Olondriz, Blanca Gener, Christian Beetz, Rita E Varga, Omer Gülpınar, Evren Süer, Tarkan Soygür, Zeynep B Ozçakar, Fatoş Yalçınkaya, Aslı Kavaz, Burcu Bulum, Adnan Gücük, Wyatt W Yue, Firat Erdogan, Andrew Berry, Neil A Hanley, Edward A McKenzie, Emma N Hilton, Adrian S Woolf, William G Newman
JournalAmerican journal of human genetics (Am J Hum Genet) Vol. 92 Issue 2 Pg. 259-64 (Feb 7 2013) ISSN: 1537-6605 [Electronic] United States
PMID23313374 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2013 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.
Chemical References
  • LRIG2 protein, human
  • Membrane Glycoproteins
  • Base Sequence
  • Child
  • Child, Preschool
  • DNA Mutational Analysis
  • Facies
  • Family
  • Female
  • Humans
  • Immunohistochemistry
  • Infant
  • Male
  • Membrane Glycoproteins (genetics)
  • Molecular Sequence Data
  • Mutation (genetics)
  • Pedigree
  • Urinary Bladder (pathology)
  • Urinary Bladder, Neurogenic (genetics)
  • Urologic Diseases (genetics, physiopathology)

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