title: Novel OCRL1 gene mutations in six Chinese families with Lowe syndrome.
abstract: BACKGROUND
  Lowe syndrome, an X-linked, inheritable disease with clinical symptoms of congenital cataracts, incomplete Fanconi syndrome, and mental retardation, has an approximate incidence of 1 in 500 000. Nearly 200 OCRL mutations related to Lowe syndrome have been found worldwide, with only ten mutations among the Chinese population. Since more mutations may exist in Chinese patients, we sequenced and analyzed the OCRL genes of six children with Lowe syndrome in a medical center in China.
  
  
  METHODS
  Peripheral blood was collected from six children with Lowe syndrome and their relatives, and ten healthy adults. Genomic DNA was extracted from the blood and applied to amplify the twenty-four exons and flanking introns of the OCRL gene. The mutations were identified by sequencing.
  
  
  RESULTS
  Five mutations (c.1528C>T, c.2187insG, c.1366C>T, c.1499G>A, and c.2581G>A) of the OCRL gene were found in five families; c.2187insG and c.1366C>T were novel mutations. None of the five mutations were detected in 20 normal chromosomes. No mutation was found in the sixth family.
  
  
  CONCLUSIONS
  Two novel mutations of the OCRL gene, c.2187insG and c.1366C>T, were found in Chinese patients with Lowe syndrome, which will provide new clues for the etiology of Lowe syndrome and could be beneficial to genetic diagnosis of the condition.
authors.affiliation: Guangzhou Women and Children's Medical Center, Guangzhou, China. gzhphp@163.com.
authors.forename: Yan
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Guangzhou Women and Children's Medical Center, Guangzhou, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Jiang
authors.affiliation: Guangzhou Women and Children's Medical Center, Guangzhou, China.
authors.forename: Zhi-Ying
authors.initials: ZY
authors.lastname: Ou
mesh_terms: D016022:Case-Control Studies; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D005260:Female; D005784:Gene Amplification; D020022:Genetic Predisposition to Disease / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D009800:Oculocerebrorenal Syndrome / Q000175:diagnosis / Q000453:epidemiology* / Q000235:genetics*; D010375:Pedigree; D010744:Phosphoric Monoester Hydrolases / Q000235:genetics*; D017354:Point Mutation / Q000235:genetics; D060888:Real-Time Polymerase Chain Reaction / Q000379:methods; D012016:Reference Values; D018570:Risk Assessment; D012494:Sampling Studies
chemical_list: D010744:Phosphoric Monoester Hydrolases; C075695:OCRL protein, human
keywords: Lowe syndrome; OCRL gene; mutation