Abstract |
Holoprosencephaly (HPE) is a developmental defect in humans in which the forebrain fails to completely separate into two hemispheres. We describe a 12 3/7-week-old fetus found on ultrasound evaluation to have features consistent with HPE, including a single anterior ventricle, fused thalami, and a flattened profile. Cytogenetic analysis of chorionic villi revealed a ring chromosome 7 [r(7)]. This uncommon finding has been associated with growth delay, microcephaly, and dermatologic abnormalities. However, both the clinical features and the extent of cytogenetic imbalance of chromosome 7 are variable, and few reported cases of r(7) have been molecularly studied. To our knowledge, this is the first report of a prenatally identified r(7), molecularly characterized using array comparative genomic hybridization.
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Authors | Lindsay B Henderson, Virginia L Corson, Daniel O Saul, Cynthia Anderson, Sarah Millard, Denise A S Batista, Karin J Blakemore, Cheryl Descipio |
Journal | Case reports in genetics
(Case Rep Genet)
Vol. 2013
Pg. 578202
( 2013)
ISSN: 2090-6544 [Print] United States |
PMID | 23509645
(Publication Type: Journal Article)
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