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Updated: Jun 7, 2025

FISH for Pre-implantation Genetic Diagnosis
Published on: February 23, 2011
Offering complex genomic screening in acute pediatric settings: Family decision-making and outcomes
Melissa Martyn1, Ling Lee2, Alli Jan3
1Murdoch Children's Research Institute, Parkville, VIC, Australia; Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia.
Insights
Delaying genomic screening after diagnosis improves family understanding and recall. Most families found decisions easier and accepted a delayed offer, suggesting this approach should be widely trialed.
Area of Science:
- Genomic Medicine
- Clinical Genetics
- Bioethics
Background:
- Genomic sequencing in pediatric acute care presents complex decisions for families during high-stress periods.
- Current practices offer ultrarapid genomic sequencing concurrently with diagnostic testing, potentially overwhelming families.
Purpose of the Study:
- To evaluate the uptake, understanding, and service delivery preferences of families offered genomic screening after diagnostic testing completion.
- To reduce decision-making complexity for families and clinicians in pediatric acute care settings.
Main Methods:
- A cohort of 235 families undergoing ultrarapid diagnostic genomic sequencing were offered subsequent genomic screening (pediatric-onset, adult-onset, couple carrier).
- Data were collected via surveys at three time points and inductive content analysis of genetic counseling transcripts.
- Uptake, decision-making ease, understanding, and recall of results were assessed.
Main Results:
- 119 families (51%) attended genetic counseling, and 115 (49%) accepted genomic screening.
- Couple carrier screening decisions were perceived as easier than pediatric or adult-onset screening.
- Families demonstrated accurate recall of newly detected pathogenic variants one month later, and 78% found a delayed offer acceptable.
Conclusions:
- Separating genomic screening from the acute diagnostic period is feasible and supported by families.
- Families exhibit good knowledge and recall when genomic screening is offered post-diagnosis.
- Delayed genomic screening should be trialed more broadly in clinical practice.
Purpose:
Families of children in pediatric acute care who are offered ultrarapid genomic sequencing are making complex decisions during a high-stress period. To reduce complexity for families and clinicians, we offered genomic screening for the child and parents after the completion of diagnostic testing. We evaluated uptake, understanding, and service delivery preferences.
Methods:
A cohort of 235 families who had completed ultrarapid diagnostic genomic sequencing at 17 Australian hospitals were offered up to 3 screens on their genomic data: pediatric-onset, adult-onset, and expanded couple carrier screening. We investigated decision making, understanding, and service delivery preferences using surveys at 3 time points (pre counseling, post counseling, and post result) and performed inductive content analysis of pretest genetic counseling transcripts.
Results:
A total of 119 families (51%) attended genetic counseling with 115 (49%) accepting genomic screening. Survey respondents were more likely to find decisions about couple carrier screening easy (87%) compared with adult (68%; P = .002) or pediatric (71%; P = .01) screening decisions. All respondents with newly detected pathogenic variants accurately recalled this 1 month later. A delayed offer of screening was acceptable to most respondents (78%).
Conclusion:
Separating genomic screening from the stressful diagnostic period is supported by families who demonstrate good knowledge and recall. Our results suggest delaying genomic screening should be trialed more widely.
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