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Fetal anomalies v0.2733 FAT1 Zornitza Stark Marked gene: FAT1 as ready
Fetal anomalies v0.2733 FAT1 Zornitza Stark Gene: fat1 has been classified as Green List (High Evidence).
Fetal anomalies v0.2733 FAT1 Zornitza Stark Classified gene: FAT1 as Green List (high evidence)
Fetal anomalies v0.2733 FAT1 Zornitza Stark Gene: fat1 has been classified as Green List (High Evidence).
Fetal anomalies v0.2712 FAT1 Krithika Murali 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
Added comment: 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