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Molecular Medicine Reports
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Print ISSN: 1791-2997 Online ISSN: 1791-3004
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December-2018 Volume 18 Issue 6

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Case Report

Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report

  • Authors:
    • Bobo Xie
    • Jingsi Luo
    • Yaqin Lei
    • Qi Yang
    • Mengting Li
    • Shang Yi
    • Shiyu Luo
    • Jin Wang
    • Zailong Qin
    • Zuojian Yang
    • Hongwei Wei
    • Xin Fan
  • View Affiliations / Copyright

    Affiliations: Genetic and Metabolic Central Laboratory, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China, Department of Ultrasound, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China, Department of Obstetrics and Gynecology, Guangxi Maternal and Child Health Hospital, Nanning, Guangxi 530023, P.R. China
  • Pages: 5760-5764
    |
    Published online on: October 24, 2018
       https://doi.org/10.3892/mmr.2018.9583
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Abstract

Hydrocephalus due to aqueductal stenosis (HSAS; Online Mendelian Inheritance in Man #307000) is a rare X‑linked, recessively‑inherited disease characterized by severe hydrocephaly and occasionally adducted thumbs, in addition to intellectual disability and spasticity in surviving individuals. The present study described two fetuses with severely enlarged ventricles of the brain. The clinical diagnosis of HSAS was made on the basis of family history and sonographic findings. Molecular testing of the L1 cell adhesion molecule (L1CAM) gene revealed two novel hemizygous L1CAM variants, c.998C>T(p.Pro333Leu) and c.2362G>T(p.Val788Phe). The variants affect the highly conserved amino acids which are located in the key domains of the protein (the fourth Ig domain and second FnIII domain, respectively). The two variants were predicted to be ‘disease causing’ by a number of prediction tools, and have been classified as likely pathogenic following the American College of Medical Genetics and Genomics/Association for Molecular Pathology guidelines. The present study highlights the importance of combining family history, prenatal ultrasonography and molecular testing in the diagnosis of HSAS. The novel variants expand the mutational spectrum of L1CAM gene in the Chinese population, and could be used in genetic counseling, carrier testing of female relatives, and prenatal, as well as preimplantation genetic diagnosis.
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Copy and paste a formatted citation
Spandidos Publications style
Xie B, Luo J, Lei Y, Yang Q, Li M, Yi S, Luo S, Wang J, Qin Z, Yang Z, Yang Z, et al: Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report. Mol Med Rep 18: 5760-5764, 2018.
APA
Xie, B., Luo, J., Lei, Y., Yang, Q., Li, M., Yi, S. ... Fan, X. (2018). Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report. Molecular Medicine Reports, 18, 5760-5764. https://doi.org/10.3892/mmr.2018.9583
MLA
Xie, B., Luo, J., Lei, Y., Yang, Q., Li, M., Yi, S., Luo, S., Wang, J., Qin, Z., Yang, Z., Wei, H., Fan, X."Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report". Molecular Medicine Reports 18.6 (2018): 5760-5764.
Chicago
Xie, B., Luo, J., Lei, Y., Yang, Q., Li, M., Yi, S., Luo, S., Wang, J., Qin, Z., Yang, Z., Wei, H., Fan, X."Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report". Molecular Medicine Reports 18, no. 6 (2018): 5760-5764. https://doi.org/10.3892/mmr.2018.9583
Copy and paste a formatted citation
x
Spandidos Publications style
Xie B, Luo J, Lei Y, Yang Q, Li M, Yi S, Luo S, Wang J, Qin Z, Yang Z, Yang Z, et al: Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report. Mol Med Rep 18: 5760-5764, 2018.
APA
Xie, B., Luo, J., Lei, Y., Yang, Q., Li, M., Yi, S. ... Fan, X. (2018). Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report. Molecular Medicine Reports, 18, 5760-5764. https://doi.org/10.3892/mmr.2018.9583
MLA
Xie, B., Luo, J., Lei, Y., Yang, Q., Li, M., Yi, S., Luo, S., Wang, J., Qin, Z., Yang, Z., Wei, H., Fan, X."Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report". Molecular Medicine Reports 18.6 (2018): 5760-5764.
Chicago
Xie, B., Luo, J., Lei, Y., Yang, Q., Li, M., Yi, S., Luo, S., Wang, J., Qin, Z., Yang, Z., Wei, H., Fan, X."Two novel pathogenic variants of L1CAM gene in two fetuses with isolated X‑linked hydrocephaly: A case report". Molecular Medicine Reports 18, no. 6 (2018): 5760-5764. https://doi.org/10.3892/mmr.2018.9583
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