Amyloidosis

Gene: FGA

Green List (high evidence)

FGA (fibrinogen alpha chain)
EnsemblGeneIds (GRCh38): ENSG00000171560
EnsemblGeneIds (GRCh37): ENSG00000171560
OMIM: 134820, Gene2Phenotype
FGA is in 7 panels

1 review

Eleanor Williams (Genomics England Curator)

Green List (high evidence)

Associated with Amyloidosis, familial visceral (#105200) in OMIM.

PMID: 29142973 - Rowczenio et al 2016 - 6 patients presented with proteinuria, hypertension, and/or lower limb edema. A novel FGA gene mutation was identified in each case: 2 frameshift mutations F521Sfs*27 and G519Efs*30 and 4 single base substitutions G555F, E526K, E524K, R554H. In 5 patients amyloid deposits were found only within the glomeruli. In 1 patient light-chain amyloid deposits were found.

PMID: 23551149 - Haidinger et al 2013 - large Spanish family with chronic kidney disease with late-onset gross proteinuria. Renal biopsies from 2 members revealed almost complete obliteration of the mesangial glomerular architecture, although kidney function was only moderately impaired. In these 2 living members, they identified the AFib R554L mutation.

PMID: 19073821 - Gillmore et al 2009 - describe 71 patients with fibrinogen amyloidosis, who were prospectively studied at the UK National Amyloidosis Centre. Direct sequencing of the FGA gene showed that 64 patients were heterozygous for the previously reported single base substitution that altered the codon at position 526 of the mature protein from that for glutamic acid to valine. 2 English patients were heterozygous for the previously reported fibrinogen mutation encoding a single base substitution that altered the codon at position 554 from arginine to leucine. 4 novel amyloidogenic fibrinogen mutations were discovered in Chinese, German and Afro-Caribbean patients.
Created: 13 Aug 2019, 3:50 p.m. | Last Modified: 13 Aug 2019, 3:50 p.m.
Panel Version: 0.7
This gene was part of an initial gene list collated by Emma Ashton (NE Thames Regional Genetics laboratory, GOSH NHS Foundation Trust) January 2019 on behalf of the GMS Renal Specialist Test Group.Gene Symbol submitted: FGA;Suggested initial gene rating: Green;Evidence for inclusion: none provided;Evidence for exclusion: none provided; Technical notes (e.g. non-coding/CNV mutations requiring coverage?): none provided. Other Comments: Already on the Periodic Fever Syndrome App
Created: 2 Feb 2019, 3:49 p.m.

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Phenotypes
105200

Publications

Variants in this GENE are reported as part of current diagnostic practice

Details

Mode of Inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Sources
  • NHS GMS
  • Expert Review Green
Phenotypes
  • Amyloidosis, familial visceral 105200
OMIM
134820
Clinvar variants
Variants in FGA
Penetrance
None
Publications
Panels with this gene

History Filter Activity

12 Sep 2019, Gel status: 3

Set Phenotypes

Eleanor Williams (Genomics England Curator)

Phenotypes for gene: FGA were changed from 105200 to Amyloidosis, familial visceral 105200

2 Feb 2019, Gel status: 4

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

Eleanor Williams (Genomics England Curator)

gene: FGA was added gene: FGA was added to Amyloidosis. Sources: Expert Review Green,NHS GMS Mode of inheritance for gene: FGA was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: FGA were set to 19073821; 29142973; 23551149 Phenotypes for gene: FGA were set to 105200