title: A de novo chromosomal abnormality in Cri du Chat syndrome.
abstract: OBJECTIVE
  To find the length and location of the deletions in the short arm of chromosome 5 in one case of Cri du Chat syndrome using oligo array comparative genomic hybridization.
  
  
  METHODS
  Metaphase chromosomes were prepared from peripheral blood lymphocyte cultures using standard cytogenetic protocols. Chromosomal analysis was done in G-banded metaphases. Oligo array comparative genomic hybridization and fluorescence in situ hybridization were performed by the commercially available kits.
  
  
  RESULTS
  Oligonucleotide array comparative genomic hybridization (CGH) analysis revealed a 23.263 Mb deletion at region 5p14.2-->qter, combined with a duplication of 14.602 Mb in size in the area 12p13.1-->pter. Chromosomal aberrations were confirmed by fluorescence in situ hybridization. The male neonate with Cri du Chat syndrome had an unbalanced translocation which was inherited from his father who was a balanced carrier with a karyotype 46, XY, t (5; 12) (p14.2; p13.1).
  
  
  CONCLUSIONS
  This report shows the clinical utility of the oligonucleotide array in the detection of submicroscopic chromosomal aberrations, thus improving the molecular diagnosis of Cri du Chat syndrome.
authors.affiliation: Department of Clinical Laboratory, Shenzhen Baoan Hospital, Southern Medical University, 118 Longjing Er Road, Baoan, Shenzhen, Guangdong, 518101, China, shunchangsun@yahoo.com.cn.
authors.forename: Shunchang C
authors.initials: SC
authors.lastname: Sun
authors.forename: Fuwei W
authors.initials: FW
authors.lastname: Luo
authors.forename: Zhiming M
authors.initials: ZM
authors.lastname: Zhou
authors.forename: Yunsheng S
authors.initials: YS
authors.lastname: Peng
authors.forename: Huiwen W
authors.initials: HW
authors.lastname: Song
mesh_terms: D002869:Chromosome Aberrations; D002872:Chromosome Deletion; D002895:Chromosomes, Human, Pair 5; D003410:Cri-du-Chat Syndrome / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D008297:Male
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