chr4-154584411-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000508.5(FGA):​c.2314G>A​(p.Glu772Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,858 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

FGA
NM_000508.5 missense

Scores

7
12

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.96
Variant links:
Genes affected
FGA (HGNC:3661): (fibrinogen alpha chain) This gene encodes the alpha subunit of the coagulation factor fibrinogen, which is a component of the blood clot. Following vascular injury, the encoded preproprotein is proteolytically processed by thrombin during the conversion of fibrinogen to fibrin. Mutations in this gene lead to several disorders, including dysfibrinogenemia, hypofibrinogenemia, afibrinogenemia and renal amyloidosis. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that undergoes proteolytic processing. [provided by RefSeq, Jan 2016]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.39149386).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
FGANM_000508.5 linkuse as main transcriptc.2314G>A p.Glu772Lys missense_variant 6/6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
FGAENST00000651975.2 linkuse as main transcriptc.2314G>A p.Glu772Lys missense_variant 6/6 P1P02671-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
0.00000205
AC:
3
AN:
1461858
Hom.:
0
Cov.:
34
AF XY:
0.00000275
AC XY:
2
AN XY:
727230
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsJul 12, 2023The c.2314G>A (p.E772K) alteration is located in exon 6 (coding exon 6) of the FGA gene. This alteration results from a G to A substitution at nucleotide position 2314, causing the glutamic acid (E) at amino acid position 772 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.31
BayesDel_addAF
Benign
-0.0098
T
BayesDel_noAF
Benign
-0.25
CADD
Benign
21
DANN
Uncertain
1.0
DEOGEN2
Benign
0.18
T
Eigen
Uncertain
0.37
Eigen_PC
Uncertain
0.40
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Benign
0.86
D
M_CAP
Benign
0.060
D
MetaRNN
Benign
0.39
T
MetaSVM
Uncertain
-0.15
T
MutationAssessor
Benign
1.6
L
MutationTaster
Benign
1.0
D
PrimateAI
Benign
0.39
T
PROVEAN
Benign
-1.7
N
REVEL
Uncertain
0.31
Sift
Benign
0.038
D
Sift4G
Uncertain
0.040
D
Polyphen
0.88
P
Vest4
0.11
MutPred
0.46
Gain of glycosylation at Y777 (P = 0.0035);
MVP
0.87
MPC
0.38
ClinPred
0.88
D
GERP RS
5.7
Varity_R
0.60
gMVP
0.58

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-155505563; COSMIC: COSV105117579; COSMIC: COSV105117579; API