Osteo-Oto-Hepato-Enteric Syndrome (O2HE) is caused by loss of function mutations in UNC45A

Clothilde Esteve, Ludmila Francescatto, Perciliz L. Tan, Aurélie Bourchany, Cécile de Leusse, Evelyne Marinier, Arnaud Blanchard, Patrice Bourgeois, Céline Brochier-Armanet, Ange Line Bruel, Arnauld Delarue, Yannis Duffourd, Emmanuelle Ecochard-Dugelay, Géraldine Hery, Frédéric Huet, Philippe Gauchez, Emmanuel Gonzales, Catherine Guettier-Bouttier, Mina Komuta, Caroline LacosteRaphaelle Maudinas, Karin Mazodier, Yves Rimet, Jean Baptiste Rivière, Bertrand Roquelaure, Sabine Sigaudy, Xavier Stephenne, Christel Thauvin-Robinet, Julien Thevenon, Jacques Sarles, Nicolas Levy, Catherine Badens, Olivier Goulet, Jean Pierre Hugot, Nicholas Katsanis, Laurence Faivre, Alexandre Fabre*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Despite the rapid discovery of genes for rare genetic disorders, we continue to encounter individuals presenting with hitherto unknown syndromic manifestations. Here, we have studied four affected people in three families presenting with cholestasis, congenital diarrhea, impaired hearing and bone fragility, a clinical entity we have termed O2HE (Osteo-Oto-Hepato-enteric) syndrome. Whole exome sequencing of all affected individuals and their parents identified biallelic mutations in Unc-45 Myosin Chaperone A (UNC45A), as a likely driver for this disorder. Subsequent in vitro and in vivo functional studies of the candidate gene indicated a loss of function paradigm, wherein mutations attenuated or abolished protein activity with concomitant defects in gut development and function.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Oct 26 2017
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

Fingerprint Dive into the research topics of 'Osteo-Oto-Hepato-Enteric Syndrome (O2HE) is caused by loss of function mutations in UNC45A'. Together they form a unique fingerprint.

Cite this