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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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Related Experiment Video

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FISH for Pre-implantation Genetic Diagnosis
07:34

FISH for Pre-implantation Genetic Diagnosis

Published on: February 23, 2011

Evolving applications of microarray analysis in prenatal diagnosis.

Melissa S Savage1, Mirella J Mourad, Ronald J Wapner

  • 1Division of Reproductive Genetics, Department of Obstetrics and Gynecology, Columbia University, New York, New York, USA.

Current Opinion in Obstetrics & Gynecology
|February 8, 2011
PubMed
Summary

Array comparative genomic hybridization (aCGH) offers advantages for postnatal genetic evaluation. Its use in prenatal diagnosis is under investigation, particularly for fetuses with anomalies, but counseling can be challenging due to uncertain findings.

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Area of Science:

  • Genetics
  • Reproductive Medicine
  • Bioinformatics

Background:

  • Copy number variation (CNV) detection via microarray analysis is superior to standard karyotyping for postnatal genetic evaluations.
  • Array technology is increasingly used for neonates and infants with dysmorphic features or cognitive difficulties.
  • Routine prenatal diagnosis using microarray analysis requires further evaluation of its clinical utility and potential dilemmas.

Purpose of the Study:

  • To review the current literature on the application of array comparative genomic hybridization (aCGH) in prenatal diagnosis.
  • To evaluate the benefits and limitations of microarray technology for prenatal genetic testing.
  • To present current guidelines and author recommendations regarding aCGH in prenatal settings.

Main Methods:

  • Literature review of recent studies on microarray technology in prenatal diagnosis.
  • Analysis of specific scenarios involving fetuses with structural anomalies and abnormal karyotypes.
  • Synthesis of information on array design and clinical implications.

Main Results:

  • Microarray analysis provides valuable, clinically relevant information in specific prenatal situations, such as for fetuses with structural anomalies or stillborn infants.
  • Ongoing research focuses on optimizing array designs for prenatal testing.
  • Patient counseling can be complex due to the uncertain phenotypic correlations of some array findings.

Conclusions:

  • Microarray technology presents benefits and limitations for prenatal diagnosis.
  • Its application in prenatal settings, especially for anomalous fetuses, is promising but requires careful consideration.
  • Further research and clear guidelines are necessary for the optimal integration of aCGH into routine prenatal care.