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3 results

  • Array comparative genomic hybridisation results of non-syndromic children with the conotruncal heart anomaly

  • Part of
  • Serdar Mermer, Derya Aydın Şahin
  • Journal:
    Cardiology in the Young / Volume 32 / Issue 2 / February 2022
    Published online by Cambridge University Press:
    20 January 2022, pp. 301-306

  • The study aimed to show the chromosomal copy number variations responsible for the aetiology in patients with isolated conotruncal heart anomaly by array comparative genomic hybridisation and identify candidate genes causing conotruncal heart disease. A total of 37 patients, 17 male, and 20 female, with isolated conotruncal heart anomalies, were included in the study. No findings indicated any syndrome in terms of dysmorphology in the patients.

    Results:

    Copy number variations were detected in the array comparative genomic hybridisation analysis of five (13.5%) of 37 patients included in the study. Three candidate genes (PRDM16, HIST1H1E, GJA5) found in these deletion and duplication regions may be associated with the conotruncal cardiac anomaly.

    Conclusion:

    CHDs can be encountered as the first and sometimes the single finding of many genetic disorders in children. It is thought that genetic tests, especially array comparative genomic hybridisation, may be beneficial for children with CHD since the diagnosis of genetic diseases in these patients as early as possible will help to prevent or reduce complications that may develop in the future. Also, it would be possible to detect candidate genes responsible for conotruncal cardiac anomalies with array comparative genomic hybridisation.

  • 10 - Fetal karyotyping: what should we be offering and how?

  • Edited by Sean Kehoe, Lyn Chitty, Tessa Homfray
  • Book:
    Reproductive Genetics
    Published online:
    05 February 2014
    Print publication:
    01 November 2009, pp 147-158

  • Summary

    In the context of developing prenatal diagnosis (PND) service delivery models, there is no doubt that the most significant innovation will come from the application of a technology known as array comparative genomic hybridisation (aCGH), which in some postnatal clinical scenarios will soon replace conventional karyotyping as the front-line 'whole-genome test'. There are a number of scenarios that may provide drivers for the adoption of aCGH as the first-line whole-genome test following invasive PND, of which the following two appear the most probable: cases that, following invasive PND, are reported to be normal following quantitative fluorescence polymerase chain reaction (QF-PCR) and/or karyotyping but have abnormal ultrasound findings; and cases that are normal following non-invasive PND (NIPD) for the autosomal aneuploidies but have abnormal ultrasound findings (first trimester or at the 18-20 week anomaly scan).