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Fetal anomalies

Gene: NFIB

Green List (high evidence)
NFIB (nuclear factor I B)
EnsemblGeneIds (GRCh38): ENSG00000147862
EnsemblGeneIds (GRCh37): ENSG00000147862
OMIM: 600728, Gene2Phenotype
NFIB is in 5 panels

1 review

Krithika Murali (Victorian Clinical Genetics Services)

Green List (high evidence)

NFIB haploinsufficiency associated with syndromic ID. Macrocephaly and corpus callosum anomalies are recurrent phenotypic features. OMIM notes macrocephaly postnatal in onset, but review of published cases shows some instances of relative macrocephaly at birth. Also corpus callosal anomalies - agenesis and dysgenesis, noted on MRI-B in childhood but possibility of detecting this antenatally in future cases. 2 unrelated individuals reported with minor cardiac anomalies also.

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OMIM notes macrocephaly postnatal in onset. PMID: 30388402 - 18 individuals reported, of whom 11 had deletions of this gene and the rest had SNVs. Relative macrocephaly noted based on growth parameters in 4 individuals (e.g. x1 male with BW 22nd centile and HC 99th centile in an apparently uncomplicated pregnancy) - macrocephaly became more pronounced with age. In addition, 2 individuals had congenital cardiac anomalies (x1 small VSD and x1 narrow pulmonary artery) and 2 individuals had complete agenesis of the corpus callosum.

33130023 - Report one affected individual. Birth weight was 4.13 kg (Z-score 1.50, 93rd percentile), length was 52 cm (Z-score 1.12, 87th percentile) and his head circumference was 37 cm (Z-score 2.00, 98th percentile). MRI-B at 12 months confirmed agenesis of the corpus callosum

32902921 - report one patient with normal antenatal history, no birth HC provided, macrocephaly noted at 7 months. MRI-B showed mild dysgensis of the corpus callosum age 5. 2nd unrelated patient's birth weight 3.43 kg(57th centile,Zscore 0.17), length 52.8 cm (94th centile, Zscore1.54), and OFC 37.5 cm (99th centile,Zscore 2.39). MRI-B age 5 showed dysgenesis of the corpus callosum.
Sources: Literature
Created: 28 Feb 2022, 6:23 a.m.

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Phenotypes
Macrocephaly, acquired, with impaired intellectual development - MIM#618286

Publications

Created: 28 Feb 2022, 6:23 a.m.

Panel version: 0.4294

Details

Mode of Inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Sources
  • Expert Review Green
  • Literature
Phenotypes
  • Macrocephaly, acquired, with impaired intellectual development - MIM#618286
OMIM
600728
Clinvar variants
Variants in NFIB
Penetrance
None
Publications
Panels with this gene

History Filter Activity

28 Feb 2022, Gel status: 3

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: nfib has been classified as Green List (High Evidence).

28 Feb 2022, Gel status: 3

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: nfib has been classified as Green List (High Evidence).

28 Feb 2022, Gel status: 0

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes

Krithika Murali (Victorian Clinical Genetics Services)

gene: NFIB was added gene: NFIB was added to Fetal anomalies. Sources: Literature Mode of inheritance for gene: NFIB was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: NFIB were set to 30388402; 33130023; 32902921 Phenotypes for gene: NFIB were set to Macrocephaly, acquired, with impaired intellectual development - MIM#618286 Review for gene: NFIB was set to GREEN