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Fetal anomalies

Gene: FAT1

Green List (high evidence)
FAT1 (FAT atypical cadherin 1)
EnsemblGeneIds (GRCh38): ENSG00000083857
EnsemblGeneIds (GRCh37): ENSG00000083857
OMIM: 600976, Gene2Phenotype
FAT1 is in 5 panels

1 review

Krithika Murali (Victorian Clinical Genetics Services)

Green List (high evidence)

No OMIM gene-disease association, but multiple affected individuals from unrelated families reported with biallelic FAT1 variants and syndromic features consisting of ocular anomalies, hand/foot malformations and nephropathy. Although diagnosis antenatally not yet reported, some phenotypic features are detectable antenatally.

PMID: 30862798 Larouchi et al 2019 - homozygous frameshift FAT1 variants identified in 10 affected individuals from 5 unrelated consanguineous families. The patients presented with syndromic features including ocular anomalies (ptosis, microphthalmia, coloboma, amblyopia), nephropathy (FSGS, proteinuria, haematuria), toe syndactyly and facial dysmorphism. Animal models showing that deletion of Fat1 leads to coloboma in mouse and zebrafish.

PMID 26905694 Gee et al 2016 – report recessive mutations in FAT1 in four unrelated consanguineous families with a combination of steroid-resistant nephrotic syndrome, tubular ectasia, haematuria and variable neurodevelopmental findings such ID, polymicrogyria and hydrocephalus. X1 child with pulmonary stenosis.

PMID: 34202629 Peluso et al 2021 – Homozygous FAT1 frameshift variant NM_005245.4:c.9729del identified in a child of consanguineous parents with bilateral anophthalmia and hand/foot malformations including - right split foot with 4 toes, 5 metacarpals, second toe duplication and preaxial polydactyly on the right hand. Patient also had congenital heart defects including VSD, ASD and bicuspid aortic valve. Proband also had a microarray which detected a maternally inherited 350 kb 15q26.3 duplication including OMIM morbid gene CERS3 (AR condition) and part of the OMIM morbid gene ADAMTS17 (AR condition). Mother healthy, CNV unrelated to patient’s phenotype.

PMID: 34013115 Fabretti et al 2021 – report 4 patients with biallelic FAT1 variants from 3 unrelated families with syndactyly, ophthalmologic and renal phenotype consistent with previously reported cases.

PMID: 33418956 Haug et al 2021 - Genetic analysis showed that proband with phenotypic features consistent with other reported cases was compound heterozygous for a frameshift FAT1 variant and 1.8Mb 4q35.2 del including FAT1.

PMID: 32902815 Rossanti et al 2021 – Biallelic FAT1 variants reported in a child with isolated mild proteinuria and no syndromic features
Sources: Literature
Created: 24 Jan 2022, 5:31 a.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
multiple congenital anomalies; nephropathy; ocular anomalies; hand and foot anomalies

Publications

Created: 24 Jan 2022, 5:31 a.m.

Panel version: 0.2712

Details

Mode of Inheritance
BIALLELIC, autosomal or pseudoautosomal
Sources
  • Expert Review Green
  • Literature
Phenotypes
  • multiple congenital anomalies
  • nephropathy
  • ocular anomalies
  • hand and foot anomalies
OMIM
600976
Clinvar variants
Variants in FAT1
Penetrance
None
Publications
Panels with this gene

History Filter Activity

24 Jan 2022, Gel status: 3

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: fat1 has been classified as Green List (High Evidence).

24 Jan 2022, Gel status: 3

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: fat1 has been classified as Green List (High Evidence).

24 Jan 2022, Gel status: 0

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

Krithika Murali (Victorian Clinical Genetics Services)

gene: FAT1 was added gene: FAT1 was added to Fetal anomalies. Sources: Literature Mode of inheritance for gene: FAT1 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: FAT1 were set to 30862798; 26905694; 34202629; 34013115; 33418956; 32902815 Phenotypes for gene: FAT1 were set to multiple congenital anomalies; nephropathy; ocular anomalies; hand and foot anomalies Review for gene: FAT1 was set to GREEN