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Am J Med Genet A. 2013 Jun;161A(6):1447-52. doi: 10.1002/ajmg.a.35901. Epub 2013 Apr 30.

Ring chromosome 9 in a girl with developmental delay and dysmorphic features: case report and review of the literature.

Author information

1
Applied Human Molecular Genetics, Kennedy Center, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark.

Abstract

In this report, we describe a female child with dysmorphic features and developmental delay. Chromosome microarray analysis followed by conventional karyotyping revealed a ring chromosome 9 with a 12 Mb deletion at 9pter-p23 and a 540 kb deletion at 9q34.3-qter. Four percent of the analyzed cells had monosomy 9. The patient has the features of both the Kleefstra syndrome and the chromosome 9p-syndrome, including trigonocephaly, long philtrum, hypertelorism, and retro-/micronagthia. The deletion of the patient overlaps with several of the proposed critical regions for the 9p deletion syndrome.

PMID:
23633410
DOI:
10.1002/ajmg.a.35901
[Indexed for MEDLINE]

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