Evolution of prenatal genetics: from point mutation testing to chromosomal microarray analysis.

Abstract:

:Molecular genetic testing involves DNA analysis using various methods for the purpose of diagnosing genetic disorders. In the prenatal DNA diagnostic setting, fetal DNA is usually tested for a specific single-gene disorder for which the fetal risk is 25% or more. In contrast, cytogenetic testing is often used to detect fetal chromosomal abnormalities in cases that involve a wider range of indications. Classic cytogenetic and DNA-based testing methods provide a range of aberrations detected with different levels of genomic resolution. More recently developed molecular cytogenetic methods provide powerful tools to bridge the technical divide between these related areas. One such hybrid method is microarray-based comparative genomic hybridization. Chromosomal microarray analysis has been applied to clinical testing for unbalanced gains or losses of genomic regions associated with genetic disorders. This technology is poised to have a substantial impact on clinical genetics, including prenatal genetic testing.

journal_name

Expert Rev Mol Diagn

authors

Roa BB,Pulliam J,Eng CM,Cheung SW

doi

10.1586/14737159.5.6.883

keywords:

subject

Has Abstract

pub_date

2005-11-01 00:00:00

pages

883-92

issue

6

eissn

1473-7159

issn

1744-8352

journal_volume

5

pub_type

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