Oligonucleotide microarrays in constitutional genetic diagnosis.

Abstract:

:Oligonucleotide microarrays such as comparative genomic hybridization arrays and SNP microarrays enable the identification of genomic imbalances - also termed copy-number variants - with increasing resolution. This article will focus on the most significant applications of high-throughput oligonucleotide microarrays, both in genetic diagnosis and research. In genetic diagnosis, the method is becoming a standard tool for investigating patients with unexplained developmental delay/intellectual disability, autism spectrum disorders and/or with multiple congenital anomalies. Oligonucleotide microarray have also been recently applied to the detection of genomic imbalances in prenatal diagnosis either to characterize a chromosomal rearrangement that has previously been identified by standard prenatal karyotyping or to detect a cryptic genomic imbalance in a fetus with ultrasound abnormalities and a normal standard prenatal karyotype. In research, oligonucleotide microarrays have been used for a wide range of applications, such as the identification of new genes responsible for monogenic disorders and the association of a copy-number variant as a predisposing factor to a common disease. Despite its widespread use, the interpretation of results is not always straightforward. We will discuss several unexpected results and ethical issues raised by these new methods.

journal_name

Expert Rev Mol Diagn

authors

Keren B,Le Caignec C

doi

10.1586/erm.11.32

subject

Has Abstract

pub_date

2011-06-01 00:00:00

pages

521-32

issue

5

eissn

1473-7159

issn

1744-8352

journal_volume

11

pub_type

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