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Prenatal diagnosis using array-CGH: a French experience.

Caroline Rooryck1, Jérôme Toutain, Dorothée Cailley

  • 1CHU Bordeaux, Génétique médicale, F-33000 Bordeaux, France. caroline.rooryck-thambo@chu-bordeaux.fr

European Journal of Medical Genetics
|March 5, 2013
PubMed
Summary
This summary is machine-generated.

Chromosomal Microarray Analysis (CMA) is a valuable tool in prenatal diagnosis. This study proposes a practical strategy for selecting fetuses for CMA and interpreting copy number alterations, aiming to standardize its use globally.

Keywords:
Array-comparative genomic hybridizationChorionic villus samplingChromosomal Microarray AnalysisCopy number alterationsCopy number variantFetal ultrasound anomaliesFluorescence in situ hybridizationPrenatal diagnosisVOUSVariant of unknown significance

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Area of Science:

  • Prenatal Diagnosis
  • Genetics
  • Medical Technology

Background:

  • Chromosomal Microarray Analysis (CMA) is increasingly adopted worldwide for prenatal diagnosis.
  • Significant variations exist in current practices regarding CMA indications, microarray design, and interpretation of copy number alterations (CNA).
  • Standardization is needed to ensure consistent and effective application of CMA in prenatal settings.

Purpose of the Study:

  • To present data and experience from a Fetal Medicine Center using CMA in 224 prospective prenatal diagnoses.
  • To propose a practical strategy for selecting fetuses for CMA and interpreting CNA.
  • To encourage the development and guideline establishment for prenatal CMA.

Main Methods:

  • Prospective data collection from 224 prenatal diagnoses at a Fetal Medicine Center.
  • Development of a practical strategy for fetal selection for CMA.
  • Focus on the interpretation of Copy Number Alterations (CNA) identified through CMA.

Main Results:

  • Detailed data and experience from 224 prospective prenatal diagnoses using CMA.
  • A defined approach for selecting fetuses eligible for CMA.
  • Insights into the interpretation of Copy Number Alterations (CNA) in the prenatal context.

Conclusions:

  • The proposed strategy offers a practical framework for implementing and interpreting CMA in prenatal diagnosis.
  • Standardizing CMA practices can enhance its utility and encourage wider adoption in routine prenatal care.
  • This work aims to contribute to the development of international guidelines for prenatal CMA.