4-154589501-A-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM1BP4

The NM_021871.4(FGA):c.116T>C(p.Val39Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000806 in 1,613,766 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V39D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

FGA
NM_021871.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.47

Publications

2 publications found

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]

FGA Gene-Disease associations (from GenCC):

familial dysfibrinogenemia
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
congenital afibrinogenemia
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
congenital fibrinogen deficiency
Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
familial visceral amyloidosis
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
thrombophilia
Inheritance: AR, AD Classification: STRONG Submitted by: Genomics England PanelApp
AFib amyloidosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial hypofibrinogenemia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

FGA links:

ENSG00000306549 (HGNC:):

ENSG00000306549 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_021871.4

BP4

Computational evidence support a benign effect (MetaRNN=0.3481598).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGA	NM_021871.4 link	c.116T>C	p.Val39Ala	missense_variant	Exon 2 of 5	ENST00000403106.8	NP_068657.1	P02671-2
FGA	NM_000508.5 link	c.116T>C	p.Val39Ala	missense_variant	Exon 2 of 6		NP_000499.1	P02671-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FGA	ENST00000403106.8 link	c.116T>C	p.Val39Ala	missense_variant	Exon 2 of 5	1	NM_021871.4	ENSP00000385981.3	P02671-2
FGA	ENST00000651975.2 link	c.116T>C	p.Val39Ala	missense_variant	Exon 2 of 6			ENSP00000498441.1	P02671-1
ENSG00000306549	ENST00000819308.1 link	n.137+2737A>G		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152000

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461766

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727196

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53338

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000989

AC:

AN:

1111972

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.443

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152000

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74240

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41382

American (AMR)

AF:

0.00

AC:

AN:

15262

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10584

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67976

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000189

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.44

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Uncertain

0.44

T;.;.

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.37

FATHMM_MKL

Benign

0.58

LIST_S2

Benign

0.62

T;T;T

M_CAP

Benign

0.031

MetaRNN

Benign

0.35

T;T;T

MetaSVM

Benign

-0.88

MutationAssessor

Benign

1.8

L;L;.

PhyloP100

4.5

PrimateAI

Benign

0.34

PROVEAN

Benign

-2.1

N;N;.

REVEL

Benign

0.15

Sift

Uncertain

0.013

D;D;.

Sift4G

Benign

0.14

T;D;D

Polyphen

0.43

B;P;.

Vest4

0.12

MutPred

0.81

Gain of disorder (P = 0.064);Gain of disorder (P = 0.064);Gain of disorder (P = 0.064);

MVP

0.59

MPC

0.10

ClinPred

0.35

GERP RS

4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.13

gMVP

0.20

Mutation Taster

=57/43

polymorphism

(source)

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

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4-154589501-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over