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Am J Med Genet. 1998 May 26;77(4):306-9.

Multiple congenital anomalies in a fetus with 45,X/46,X,r(X)(p11.22q12) mosaicism.

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  • 1Program in Human Genetics, Hamilton Health Sciences Corporation and McMaster University, Ontario, Canada.

Abstract

Ring X chromosomes that do not undergo inactivation may cause malformations and mental retardation. We report on a fetus with anencephaly, total dorsal rachischisis, and diaphragmatic hernia that was found to have a mosaic 45,X/46,X,r(X)(p11.22q12) karyotype. Fluorescent in situ hybridization (FISH) confirmed that the ring chromosome was X-derived. This report expands the phenotypic spectrum of mosaic monosomy X and small ring X chromosomes.

PMID:
9600741
[PubMed - indexed for MEDLINE]
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