PUBLICATION
The p.Thr395Met missense variant of NFIA found in a patient with intellectual disability is a defective variant
- Authors
- Ogura, Y., Uehara, T., Ujibe, K., Yoshihashi, H., Yamada, M., Suzuki, H., Takenouchi, T., Kosaki, K., Hirata, H.
- ID
- ZDB-PUB-220113-6
- Date
- 2022
- Source
- American journal of medical genetics. Part A 188(4): 1184-1192 (Journal)
- Registered Authors
- Hirata, Hiromi
- Keywords
- NFIA, developmental delay, disease, variant, zebrafish
- MeSH Terms
-
- Animals
- Haploinsufficiency
- Humans
- Intellectual Disability*/genetics
- Intellectual Disability*/pathology
- Male
- Mutation, Missense/genetics
- NFI Transcription Factors/genetics
- Neurodevelopmental Disorders*/genetics
- Zebrafish/genetics
- PubMed
- 35018717 Full text @ Am. J. Med. Genet. A
Citation
Ogura, Y., Uehara, T., Ujibe, K., Yoshihashi, H., Yamada, M., Suzuki, H., Takenouchi, T., Kosaki, K., Hirata, H. (2022) The p.Thr395Met missense variant of NFIA found in a patient with intellectual disability is a defective variant. American journal of medical genetics. Part A. 188(4):1184-1192.
Abstract
Nuclear factor one A (NFIA) is a transcription factor that regulates the development of the central nervous system. Haploinsufficiency of the NFIA gene causes NFIA-related disorder, which includes brain abnormalities and intellectual disability, with or without urinary tract defects. Intragenic deletions, nonsense variants, frameshift variants, and missense variants in one allele of the NFIA gene have been reported to cause various neurological and urogenital symptoms. Here we report a 10-year-old male patient with developmental delay, coarctation of the aorta, and distinctive facial features. Exome analysis identified a rare de novo heterozygous missense variant p.Thr395Met in NFIA. We employed zebrafish as a model organism in our NFIA analysis and found that nfia-/- zebrafish initially showed a loss of commissural axons in the brain, and eventually underwent growth retardation resulting in premature death. Impairment of the commissural neurons in nfia-/- zebrafish embryos could be restored by the expression of wild-type human NFIA protein, but not of mutant human protein harboring the p.Thr395Met substitution, indicating that this variant affects the function of NFIA protein. Taken together, we suggest that the p.Thr395Met allele in the NFIA gene is relevant to the pathogenesis of NFIA-related disorder.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping