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A multiplex human syndrome implicates a key role for intestinal cell kinase in development of central nervous,

Piya Lahiry1, Jian Wang, John F Robinson

  • 1Robarts Research Institute, London, Ontario N6A 5K8, Canada.

American Journal of Human Genetics
|February 3, 2009
PubMed

Insights

A new genetic disorder, endocrine-cerebro-osteodysplasia (ECO), was identified in Amish infants. A mutation in the ICK gene causes this lethal condition, impacting multiple organ systems.

Area of Science:

  • Genetics
  • Molecular Biology
  • Developmental Biology

Background:

  • Endocrine-Cerebro-Osteodysplasia (ECO) is a newly identified, lethal neonatal disorder.
  • ECO presents with severe anomalies affecting endocrine, cerebral, and skeletal systems.

Purpose of the Study:

  • To identify the genetic cause of endocrine-cerebro-osteodysplasia (ECO).
  • To understand the molecular mechanisms underlying ECO.

Main Methods:

  • Autozygosity mapping and gene sequencing were employed to identify the causative mutation.
  • Protein structure analysis and functional assays were performed to characterize the mutation's impact.

Main Results:

  • A novel missense mutation, R272Q, in the ICK gene was identified as the cause of ECO.
  • The R272Q mutation leads to protein instability, impaired nuclear localization, and reduced kinase activity of intestinal cell kinase (ICK).

Conclusions:

  • The study establishes a critical role for ICK in the development of multiple organ systems.
  • The findings provide insight into the pathogenesis of endocrine-cerebro-osteodysplasia and its genetic basis.

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