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"Ja-Hyun Jang"

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"Ja-Hyun Jang"

Case Reports
Correlation Between Vanishing White Matter Disease and Novel Heterozygous EIF2B3 Variants Using Next-Generation Sequencing: A Case Report
Sung Eun Hyun, Byung Se Choi, Ja-Hyun Jang, Inpyo Jeon, Dae-Hyun Jang, Ju Seok Ryu
Ann Rehabil Med 2019;43(2):234-238.   Published online April 30, 2019
DOI: https://doi.org/10.5535/arm.2019.43.2.234
Vanishing white matter (VWM) disease is an autosomal recessive disorder that affects the central nervous system of a patient, and is caused by the development of pathogenic mutations in any of the EIF2B1-5 genes. Any dysfunction of the EIF2B1-5 gene encoded eIF2B causes stress-provoked episodic rapid neurological deterioration in the patient, followed by a chronic progressive disease course. We present the case of a patient with an infantileonset VWM with the pre-described specific clinical course, subsequent neurological aggravation induced by each viral infection, and the noted consequent progression into a comatose state. Although the initial brain magnetic resonance imaging did not reveal specific pathognomonic signs of VWM to distinguish it from other types of demyelinating leukodystrophy, the next-generation sequencing studies identified heterozygous missense variants in EIF2B3, including a novel variant in exon 7 (C706G), as well as a 0.008% frequency reported variant in exon 2 (T89C). Hence, the characteristic of unbiased genomic sequencing can clinically affect patient care and decisionmaking, especially in terms of the consideration of genetic disorders such as leukoencephalopathy in pediatric patients.

Citations

Citations to this article as recorded by  
  • A (dis)integrated stress response: Genetic diseases of eIF2α regulators
    Alyssa M. English, Katelyn M. Green, Stephanie L. Moon
    WIREs RNA.2022;[Epub]     CrossRef
  • Adult Onset Vanishing White Matter Disease: A Rare Case Report
    Govind Nagdev, Rajeshwari S Vhora, Gajanan Chavan, Gaurav Sahu
    Cureus.2022;[Epub]     CrossRef
  • Eif2b3 mutants recapitulate phenotypes of vanishing white matter disease and validate novel disease alleles in zebrafish
    Yu-Ri Lee, Se Hee Kim, Afif Ben-Mahmoud, Oc-Hee Kim, Tae-Ik Choi, Kang-Han Lee, Bonsu Ku, Juneyong Eum, Yun Kee, Sangkyu Lee, Jihoon Cha, DongJu Won, Seung-Tae Lee, Jong Rak Choi, Joon Soo Lee, Heung Dong Kim, Hyung-Goo Kim, Joshua L Bonkowsky, Hoon-Chul
    Human Molecular Genetics.2021; 30(5): 331.     CrossRef
  • Profile of Indian Children with Childhood Ataxia and Central Nervous System Hypomyelination/Vanishing White Matter Disease: A Single Center Experience from Southern India
    Vykuntaraju K. Gowda, Varunvenkat M. Srinivasan, Balamurugan Nagarajan, Maya Bhat, Sanjay K. Shivappa, Naveen Benakappa
    Journal of Pediatric Genetics.2021; 10(03): 205.     CrossRef
  • 6,248 View
  • 113 Download
  • 4 Web of Science
  • 4 Crossref
Identification of a Heterozygous SPG11 Mutation by Clinical Exome Sequencing in a Patient With Hereditary Spastic Paraplegia: A Case Report
Ja-Young Oh, Hyun Jung Do, Seungok Lee, Ja-Hyun Jang, Eun-Hae Cho, Dae-Hyun Jang
Ann Rehabil Med 2016;40(6):1129-1134.   Published online December 30, 2016
DOI: https://doi.org/10.5535/arm.2016.40.6.1129

Next-generation sequencing, such as whole-genome sequencing, whole-exome sequencing, and targeted panel sequencing have been applied for diagnosis of many genetic diseases, and are in the process of replacing the traditional methods of genetic analysis. Clinical exome sequencing (CES), which provides not only sequence variation data but also clinical interpretation, aids in reaching a final conclusion with regards to genetic diagnosis. Sequencing of genes with clinical relevance rather than whole exome sequencing might be more suitable for the diagnosis of known hereditary disease with genetic heterogeneity. Here, we present the clinical usefulness of CES for the diagnosis of hereditary spastic paraplegia (HSP). We report a case of patient who was strongly suspected of having HSP based on her clinical manifestations. HSP is one of the diseases with high genetic heterogeneity, the 72 different loci and 59 discovered genes identified so far. Therefore, traditional approach for diagnosis of HSP with genetic analysis is very challenging and time-consuming. CES with TruSight One Sequencing Panel, which enriches about 4,800 genes with clinical relevance, revealed compound heterozygous mutations in SPG11. One workflow and one procedure can provide the results of genetic analysis, and CES with enrichment of clinically relevant genes is a cost-effective and time-saving diagnostic tool for diseases with genetic heterogeneity, including HSP.

Citations

Citations to this article as recorded by  
  • A novel de novo heterozygous DYRK1A mutation causes complete loss of DYRK1A function and developmental delay
    Kyu-Sun Lee, Miri Choi, Dae-Woo Kwon, Doyoun Kim, Jong-Moon Choi, Ae-Kyeong Kim, Youngwook Ham, Sang-Bae Han, Sungchan Cho, Chong Kun Cheon
    Scientific Reports.2020;[Epub]     CrossRef
  • Correlation Between Vanishing White Matter Disease and Novel Heterozygous EIF2B3 Variants Using Next-Generation Sequencing: A Case Report
    Sung Eun Hyun, Byung Se Choi, Ja-Hyun Jang, Inpyo Jeon, Dae-Hyun Jang, Ju Seok Ryu
    Annals of Rehabilitation Medicine.2019; 43(2): 234.     CrossRef
  • 5,384 View
  • 60 Download
  • 2 Web of Science
  • 2 Crossref
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