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Article

A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder

  • Authors:
    • Costas Koufaris
    • Angelos Alexandrou
    • George A. Tanteles
    • Violetta Anastasiadou
    • Carolina Sismani
  • View Affiliations / Copyright

    Affiliations: Department of Cytogenetics and Genomics, The Cyprus Institute of Neurology and Genetics, 1683 Nicosia, Cyprus, Department of Clinical Genetics, The Cyprus Institute of Neurology and Genetics, 1683 Nicosia, Cyprus
  • Pages: 215-218
    |
    Published online on: December 18, 2015
       https://doi.org/10.3892/br.2015.559
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Abstract

Approximately 10-15% of intellectual disability (ID) cases are caused by genetic aberrations affecting chromosome X, a condition termed X‑linked ID (XLID). Examination by whole-exome sequencing of two male siblings with microcephaly and suspected XLID with an unknown genetic basis revealed that they were both hemizygous for a predicted pathogenic variant (p.Ala897Val) causing a non‑synonymous substitution of an evolutionary conserved amino acid within the host cell factor C1 (HCFC1) gene. Subsequent analysis determined that this was a rare variant not identified in 100 control individuals or in online databases of control individuals. Recent studies have reported mutations affecting HCFC1 in patients with ID and dysmorphic features that are associated with defective cobalamin metabolism. Biochemical investigations did not find evidence of an association between the variant identified in the present study and cobalamin metabolic disorder. This study offers further support for mutations of HCFC1 being implicated in XLID and microcephaly, but that these are not necessarily associated with cobalamin disorder.
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Copy and paste a formatted citation
Spandidos Publications style
Koufaris C, Alexandrou A, Tanteles GA, Anastasiadou V and Sismani C: A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder. Biomed Rep 4: 215-218, 2016.
APA
Koufaris, C., Alexandrou, A., Tanteles, G.A., Anastasiadou, V., & Sismani, C. (2016). A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder. Biomedical Reports, 4, 215-218. https://doi.org/10.3892/br.2015.559
MLA
Koufaris, C., Alexandrou, A., Tanteles, G. A., Anastasiadou, V., Sismani, C."A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder". Biomedical Reports 4.2 (2016): 215-218.
Chicago
Koufaris, C., Alexandrou, A., Tanteles, G. A., Anastasiadou, V., Sismani, C."A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder". Biomedical Reports 4, no. 2 (2016): 215-218. https://doi.org/10.3892/br.2015.559
Copy and paste a formatted citation
x
Spandidos Publications style
Koufaris C, Alexandrou A, Tanteles GA, Anastasiadou V and Sismani C: A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder. Biomed Rep 4: 215-218, 2016.
APA
Koufaris, C., Alexandrou, A., Tanteles, G.A., Anastasiadou, V., & Sismani, C. (2016). A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder. Biomedical Reports, 4, 215-218. https://doi.org/10.3892/br.2015.559
MLA
Koufaris, C., Alexandrou, A., Tanteles, G. A., Anastasiadou, V., Sismani, C."A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder". Biomedical Reports 4.2 (2016): 215-218.
Chicago
Koufaris, C., Alexandrou, A., Tanteles, G. A., Anastasiadou, V., Sismani, C."A novel HCFC1 variant in male siblings with intellectual disability and microcephaly in the absence of cobalamin disorder". Biomedical Reports 4, no. 2 (2016): 215-218. https://doi.org/10.3892/br.2015.559
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