Identification of a microdeletion at Xp22.13 in a Taiwanese family presenting with Nance-Horan syndrome

Hsiao Mei Liao, Dau Ming Niu*, Yan Jang Chen, Jye Siung Fang, Shih Jen Chen, Chia Hsiang Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Nance-Horan syndrome (NHS) is a rare X-linked disorder characterized by congenital cataracts, dental anomalies and mental retardation. The disease has been linked to a novel gene termed NHS located at Xp22.13. The majority of pathogenic mutations of the disease include nonsense mutations and small deletions and insertions that lead to truncation of the NHS protein. In this study, we identified a microdeletion of ∼0.92 Mb at Xp22.13 detected by array-based comparative genomic hybridization in two brothers presenting congenital cataract, dental anomalies, facial dysmorphisms and mental retardation. The deleted region encompasses the REPS2, NHS, SCML1 and RAI2 genes, and was transmitted from their carrier mother who presented only mild cataract. Our findings are in line with several recent case reports to indicate that genomic rearrangement involving the NHS gene is an important genetic etiology underlying NHS.

Original languageEnglish
Pages (from-to)8-11
Number of pages4
JournalJournal of Human Genetics
Volume56
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • array CGH
  • congenital cataract
  • mental retardation
  • microdeletion
  • Nance-Horan syndrome

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