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1993:
DiMaio M S; Barth R; Koprivnikar K E; Sussman B L; Copel J A; Mahoney M J; Byers P H; Cohn D H
First-trimester prenatal diagnosis of osteogenesis imperfecta type II by DNA analysis and sonography.
Prenatal diagnosis 1993;
13(
7):.
Osteogenesis imperfecta type II was diagnosed prenatally by analysis of DNA obtained from chorionic villus sampling (CVS) performed at 12 weeks of gestation in a woman who previously had had an affected child. The father had been shown to be mosaic for a mutation in the gene (COL1A2) which encodes the alpha 2(I) chain of type I collagen. An affected fetus was predicted by detection of the mutation in amplified chorionic villus genomic DNA. Ultrasound examination at 13 weeks 4 days demonstrated femoral deformity and virtual absence of calvarial mineralization. In pregnancies at risk for osteogenesis imperfecta type II, sonographic evidence of skeletal abnormalities may be evident by 13 weeks' gestation.
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