chr12-6016197-A-C

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 1P and 1B. PP2BS2_Supporting

The NM_000552.5(VWF):c.5347T>G(p.Ser1783Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000044 in 1,614,172 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000044 ( 0 hom. )

Consequence

VWF
NM_000552.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:1O:1

Conservation

PhyloP100: 5.25

Variant links:

Genes affected

VWF (HGNC:12726): (von Willebrand factor) This gene encodes a glycoprotein involved in hemostasis. The encoded preproprotein is proteolytically processed following assembly into large multimeric complexes. These complexes function in the adhesion of platelets to sites of vascular injury and the transport of various proteins in the blood. Mutations in this gene result in von Willebrand disease, an inherited bleeding disorder. An unprocessed pseudogene has been found on chromosome 22. [provided by RefSeq, Oct 2015]

VWF links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PP2

Missense variant in the VWF gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 149 curated pathogenic missense variants (we use a threshold of 10). The gene has 28 curated benign missense variants. Gene score misZ: 0.98969 (below the threshold of 3.09). Trascript score misZ: 3.5064 (above the threshold of 3.09). GenCC associations: The gene is linked to von Willebrand disease type 2M, hereditary von Willebrand disease, von Willebrand disease type 2B, von Willebrand disease type 2N, von Willebrand disease 2, von Willebrand disease type 2A, von Willebrand disease 3, von Willebrand disease 1.

BS2

High AC in GnomAd4 at 6 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VWF	NM_000552.5 link	c.5347T>G	p.Ser1783Ala	missense_variant	Exon 31 of 52	ENST00000261405.10	NP_000543.3	P04275-1
VWF	XM_047429501.1 link	c.5347T>G	p.Ser1783Ala	missense_variant	Exon 31 of 52		XP_047285457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VWF	ENST00000261405.10 link	c.5347T>G	p.Ser1783Ala	missense_variant	Exon 31 of 52	1	NM_000552.5	ENSP00000261405.5		P04275-1
VWF	ENST00000538635.5 link	n.421-22263T>G		intron_variant	Intron 5 of 5	4

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152160

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:

0.00125

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000143

AC:

AN:

251494

Hom.:

AF XY:

0.000162

AC XY:

AN XY:

135922

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00114

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000445

AC:

AN:

1461894

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

727248

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:

0.000661

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152278

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74468

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00125

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000487

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.000132

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:1Other:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

von Willebrand disease type 2

Pathogenic:1

Oct 15, 2009

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

not specified

Uncertain:1

Nov 25, 2022

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: VWF c.5347T>G (p.Ser1783Ala) results in a conservative amino acid change located in the von Willebrand factor, type A domain (IPR002035) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00014 in 251494 control chromosomes. This frequency does not allow conclusions about variant significance. c.5347T>G has been reported in the literature in individuals from at-least two independent families affected with features Von Willebrand Disease supported by abnormal bleeding scores (between 5-10, reference range >/= 4 is abnormal), normal levels of multimers and abnormal CB:Ag ratio of <0.7 (example, Riddell_2009, Motum_2019 cited in Shida_2014). These data indicate that the variant may be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function (Riddell_2009). The most pronounced variant effect results in defective binding to both types I and III collagen in-vitro. This finding has also been corroborated by a mouse model that demonstrated defects in collagen binding (example, Shido_2014). No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as VUS-possibly pathogenic. -

not provided

Other:1

Academic Unit of Haematology, University of Sheffield

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Uncertain

0.013

BayesDel_noAF

Pathogenic

0.20

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.38

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.54

M_CAP

Pathogenic

0.55

MetaRNN

Uncertain

0.55

MetaSVM

Uncertain

0.46

MutationAssessor

Benign

1.9

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-1.1

REVEL

Pathogenic

0.69

Sift

Benign

0.048

Sift4G

Benign

0.070

Polyphen

0.99

Vest4

0.87

MutPred

0.74

Gain of catalytic residue at G1787 (P = 0.0107);

MVP

0.73

MPC

0.56

ClinPred

0.31

GERP RS

4.6

Varity_R

0.56

gMVP

0.79

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over