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Overgrowth with severe developmental delay following IVF/ICSI: A newly recognized syndrome?

Prakesh S Shah1, Rosanna Weksberg, David Chitayat

  • 1Mount Sinai Hospital, Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada.

American Journal of Medical Genetics. Part A
|May 13, 2006
PubMed

Insights

A child presented with postnatal overgrowth, developmental delay, and seizures after in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). This case suggests a previously unrecognized genetic disorder, with the role of assisted reproductive technologies unclear.

Area of Science:

  • Genetics
  • Developmental Biology
  • Reproductive Medicine

Background:

  • Postnatal overgrowth syndromes are rare genetic disorders affecting childhood development.
  • Assisted reproductive technologies like in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) are increasingly common.
  • The potential impact of IVF/ICSI on long-term health and development is an area of ongoing research.

Observation:

  • A child exhibited significant postnatal overgrowth starting at 3 months of age.
  • The child also presented with severe developmental delay and intractable seizures.
  • The patient's phenotype did not align with any currently described overgrowth syndromes.

Findings:

  • Genetic analysis, including assessment for imprinting defects at chromosome 11p15, did not reveal an identifiable cause.
  • The unique combination of symptoms suggests a novel genetic condition.
  • The specific contribution of IVF/ICSI to the observed condition remains undetermined.

Implications:

  • This case highlights the possibility of new genetic disorders presenting with overgrowth and developmental issues.
  • Further research is needed to investigate the potential role of assisted reproductive technologies in the etiology of such conditions.
  • Identifying the underlying genetic basis is crucial for diagnosis, prognosis, and potential therapeutic strategies.

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