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Genomics Precision Diagnostic > Neurology Precision Panel > Aicardi-Goutieres Syndrome Precision Panel

Aicardi-Goutieres Syndrome  Precision Panel

Aicardi-Goutieres Syndrome is a rare genetic neurological disorder with variable clinical manifestations including infantile spasms-in-flexion, total or partial agenesis of the corpus callosum, and variable ocular abnormalities. It usually manifests as early-onset encephalopathy resulting in severe intellectual and physical disability. 
Overview
Indication
Clinical Utility
Genes & Diseases
Methodology
References

Overview

  • Aicardi-Goutieres Syndrome is a rare genetic neurological disorder with variable clinical manifestations including infantile spasms-in-flexion, total or partial agenesis of the corpus callosum, and variable ocular abnormalities. It usually manifests as early-onset encephalopathy resulting in severe intellectual and physical disability. Genetic diagnosis is crucial due to the overlapping phenotypic features with sequelae of congenital infection and systemic lupus erythematosus (SLE). Given the phenotypic heterogeneity and diagnostic difficulties associated with young children, Aicardi-Goutieres syndrome may be a more frequent cause of mental retardation and seizure in girls than previously thought. Complications of this syndrome include severe mental retardation, intractable epilepsy and pulmonary complications. It is typically inherited in an autosomal recessive pattern. 

  • The Igenomix Aicardi-Goutieres Precision Panel can serve as an accurate and directed diagnostic tool as well as a differential diagnosis for early-onset encephalopathy ultimately leading to a better management and prognosis of the disease. It provides a comprehensive analysis of the genes involved in this disease using next-generation sequencing (NGS) to fully understand the spectrum of relevant genes involved, and their high or intermediate penetrance.

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Indication

  • The Igenomix Aicardi-Goutieres Syndrome Precision Panel is indicated in patients with a clinical suspicion or diagnosis with or without the following manifestations: 
    • Seizures 
    • Ocular abnormalities 
    • Global developmental delay 
    • Inability to walk due to spastic hemiplegia 
    • Early presentation of malignancies such as soft tissue carcinoma, hepatoblastoma and angiosarcoma 
    • Unusually small head 
    • Hand deformities 
    • Gastrointestinal difficulties: diarrhea, constipation, difficulty eating etc 

Clinical Utility

The clinical utility of this panel is: 

  • The genetic and molecular diagnosis for an accurate clinical diagnosis of a symptomatic patient.    
  • Early initiation of treatment with a multidisciplinary team in the form of medical care of seizures, physical medicine and rehabilitation, prevention of pulmonary complications and early surveillance for neoplasms. Surgical care is indicated for refractory intractable epilepsy. 
  • Risk assessment and genetic counselling of asymptomatic family members according to the mode of inheritance. 
  • Improve correlation of genotype and phenotype to increase diagnostic accuracy.

Genes & Diseases

Methodology

References

See scientific referrals

Al Mutairi, F., Alfadhel, M., Nashabat, M., El-Hattab, A. W., Ben-Omran, T., Hertecant, J., Eyaid, W., Ali, R., Alasmari, A., Kara, M., Al-Twaijri, W., Filimban, R., Alshenqiti, A., Al-Owain, M., Faqeih, E., & Alkuraya, F. S. (2018). Phenotypic and Molecular Spectrum of Aicardi-Goutières Syndrome: A Study of 24 Patients. Pediatric neurology, 78, 35–40. https://doi.org/10.1016/j.pediatrneurol.2017.09.002 

Rice, G., Patrick, T., Parmar, R., Taylor, C. F., Aeby, A., Aicardi, J., Artuch, R., Montalto, S. A., Bacino, C. A., Barroso, B., Baxter, P., Benko, W. S., Bergmann, C., Bertini, E., Biancheri, R., Blair, E. M., Blau, N., Bonthron, D. T., Briggs, T., Brueton, L. A., … Crow, Y. J. (2007). Clinical and molecular phenotype of Aicardi-Goutieres syndrome. American journal of human genetics, 81(4), 713–725. https://doi.org/10.1086/521373 

Crow, Y. J. (2005). Aicardi-Goutières Syndrome. In M. P. Adam (Eds.) et. al., GeneReviews®. University of Washington, Seattle. 

Crow Y. J. (2013). Aicardi-Goutières syndrome. Handbook of clinical neurology, 113, 1629–1635. https://doi.org/10.1016/B978-0-444-59565-2.00031-9 

Kroner, B., Preiss, L., Ardini, M., & Gaillard, W. (2008). New Incidence, Prevalence, and Survival of Aicardi Syndrome From 408 Cases. Journal Of Child Neurology, 23(5), 531-535. doi: 10.1177/0883073807309782 

Prontera, P., Bartocci, A., Ottaviani, V., Isidori, I., Rogaia, D., & Ardisia, C. et al. (2013). Aicardi Syndrome Associated with Autosomal Genomic Imbalance: Coincidence or Evidence for Autosomal Inheritance with Sex-Limited Expression?. Molecular Syndromology, 4(4), 197-202. doi: 10.1159/000350040 

Sutton, V. R., & Van den Veyver, I. B. (2006). Aicardi Syndrome. In M. P. Adam (Eds.) et. al., GeneReviews®. University of Washington, Seattle. 

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