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Developing standards for chromosomal microarray testing counselling in paediatrics.

Emma Godfrey1, Phillipa Clark

  • 1School of Medicine and Surgery, University of Birmingham, Birmingham, UK.

Acta Paediatrica (Oslo, Norway : 1992)
|February 18, 2014
PubMed
Summary
This summary is machine-generated.

Chromosomal microarray testing (CMA) requires better pre-test counseling and clear communication for informed consent and appropriate genetic referrals. Current practices show gaps in information delivery and consent processes for pediatric genetic diagnosis.

Keywords:
Chromosomal microarrayCounsellingDevelopmental disordersGenetic testingGuidelines

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Area of Science:

  • Medical Genetics
  • Pediatric Diagnostics

Background:

  • Chromosomal microarray testing (CMA) is a key tool in pediatric genetic diagnosis.
  • Effective pre-CMA counseling is crucial due to potential result ambiguity, uncertainty, and ethical considerations.

Purpose of the Study:

  • To establish standards for pre-CMA counseling and result delivery.
  • To evaluate current counseling practices within a pediatric developmental team.

Main Methods:

  • Development of counseling and result-giving standards.
  • Retrospective audit of 28 pediatric cases seen by the Auckland Developmental Paediatric team in 2011.
  • Analysis of documentation for pretest discussions, information provision, consent, and result communication.

Main Results:

  • Pretest discussion documented in 50% of cases; potential outcomes discussed in only 14%.
  • Information leaflets provided to 29% of families; signed consent obtained from only one.
  • Referrals to clinical genetics offered for all abnormal results and 80% of variants of unknown significance (VOUS).
  • Result communication varied, with most VOUS communicated informally (phone, letter).

Conclusions:

  • Clear patient information and thorough pretest discussions are essential for informed consent in CMA.
  • Timely feedback and appropriate genetics referral are critical components of CMA services.
  • Authoritative guidelines and training are necessary to improve CMA counseling standards.