rs61751302

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 1P and 2B. PP2BP6BS2_Supporting

The NM_000552.5(VWF):c.7940C>T(p.Thr2647Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00401 in 1,614,124 control chromosomes in the GnomAD database, including 21 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/23 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0041 ( 21 hom. )

Consequence

VWF
NM_000552.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:9B:5O:1

Conservation

PhyloP100: -0.336

Publications

18 publications found

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 Gene-Disease associations (from GenCC):

hereditary von Willebrand disease
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
von Willebrand disease type 2B
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
von Willebrand disease 2
Inheritance: AR, AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
von Willebrand disease 1
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
von Willebrand disease type 2A
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
von Willebrand disease type 2M
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
von Willebrand disease 3
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
von Willebrand disease type 2N
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

VWF links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 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 hereditary von Willebrand disease, von Willebrand disease type 2B, von Willebrand disease 1, von Willebrand disease 2, von Willebrand disease type 2A, von Willebrand disease type 2M, von Willebrand disease 3, von Willebrand disease type 2N.

BP6

Variant 12-5953542-G-A is Benign according to our data. Variant chr12-5953542-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 100487.

BS2

High Homozygotes in GnomAdExome4 at 21 AD,AR geneVariant has number of homozygotes 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.7940C>T	p.Thr2647Met	missense_variant	Exon 48 of 52	ENST00000261405.10	NP_000543.3	P04275-1
VWF	XM_047429501.1 link	c.7940C>T	p.Thr2647Met	missense_variant	Exon 48 of 52		XP_047285457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
VWF	ENST00000261405.10 link	c.7940C>T	p.Thr2647Met	missense_variant	Exon 48 of 52	1	NM_000552.5	ENSP00000261405.5	P04275-1
VWF	ENST00000612016.1 link	n.349C>T		non_coding_transcript_exon_variant	Exon 1 of 3	5
VWF	ENST00000621700.1 link	n.258C>T		non_coding_transcript_exon_variant	Exon 3 of 4	3

Frequencies

GnomAD3 genomes

AF:

0.00333

AC:

507

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000720

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.0195

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00369

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.00351

AC:

883

AN:

251454

AF XY:

0.00361

show subpopulations

Gnomad AFR exome

AF:

0.000615

Gnomad AMR exome

AF:

0.000347

Gnomad ASJ exome

AF:

0.00198

Gnomad EAS exome

AF:

0.000217

Gnomad FIN exome

AF:

0.0190

Gnomad NFE exome

AF:

0.00353

Gnomad OTH exome

AF:

0.00261

GnomAD4 exome

AF:

0.00408

AC:

5961

AN:

1461868

Hom.:

Cov.:

AF XY:

0.00399

AC XY:

2899

AN XY:

727234

show subpopulations

African (AFR)

AF:

0.000568

AC:

AN:

33480

American (AMR)

AF:

0.000492

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00187

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39698

South Asian (SAS)

AF:

0.000209

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0191

AC:

1020

AN:

53420

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00414

AC:

4609

AN:

1111994

Other (OTH)

AF:

0.00363

AC:

219

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

Heterozygous variant carriers

313

627

940

1254

1567

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

174

348

522

696

870

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00333

AC:

507

AN:

152256

Hom.:

Cov.:

AF XY:

0.00359

AC XY:

267

AN XY:

74450

show subpopulations

African (AFR)

AF:

0.000722

AC:

AN:

41550

American (AMR)

AF:

0.000719

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.000415

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.0195

AC:

207

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00369

AC:

251

AN:

68018

Other (OTH)

AF:

0.00189

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

123

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00295

Hom.:

Bravo

AF:

0.00193

TwinsUK

AF:

0.00162

AC:

ALSPAC

AF:

0.00311

AC:

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00198

AC:

ExAC

AF:

0.00274

AC:

333

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00349

EpiControl

AF:

0.00261

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:9Benign:5Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:4Other:1

Jun 15, 2017

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The T2647M variant in the VWF gene has been reported previously in individuals with VWF type 1 and in healthy controls (Bellissimo et al., 2012; James et al., 2007a; James et al., 2007b). The T2647M variant is observed in 112/6614 (1.7%) alleles from individuals of Finnish European background including multiple unrelated homozygous individuals in the ExAC dataset, which is greater than expected for this disorder (Lek et al., 2016). This substitution occurs at a position that is not conserved. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. However, the T2647M variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties.We interpret T2647M as a variant of uncertain significance. -

Jun 28, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Academic Unit of Haematology, University of Sheffield

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

- -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Apr 16, 2024

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

VWF: BP4, BS2 -

von Willebrand disease type 1

Uncertain:2

ISTH-SSC Genomics in Thrombosis and Hemostasis, KU Leuven, Center for Molecular and Vascular Biology

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:research

- -

Oct 30, 2023

Zotz-Klimas Genetics Lab, MVZ Zotz Klimas

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Hereditary von Willebrand disease

Uncertain:2

Feb 01, 2019

NIHR Bioresource Rare Diseases, University of Cambridge

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:research

- -

Sep 10, 2019

Genetics and Molecular Pathology, SA Pathology

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

von Willebrand disease type 3

Uncertain:1

ISTH-SSC Genomics in Thrombosis and Hemostasis, KU Leuven, Center for Molecular and Vascular Biology

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

von Willebrand disease type 1;C1264040:von Willebrand disease type 2;C1264041:von Willebrand disease type 3

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

VWF-related disorder

Uncertain:1

May 28, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The VWF c.7940C>T variant is predicted to result in the amino acid substitution p.Thr2647Met. This variant was reported in multiple individuals with Von Willebrand disease 1 (For example see: James et al. 2007. PubMed ID: 17190853; Bellissimo et al. 2011. PubMed ID: 22197721; Manderstedt et al. 2019. PubMed ID: 31026269). This variant is reported in 2.0% of alleles in individuals of European (Finnish) descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not specified

Benign:1

Oct 21, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.53

BayesDel_noAF

Benign

-0.53

CADD

Benign

2.1

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.76

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.014

LIST_S2

Benign

0.73

MetaRNN

Benign

0.0062

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.3

PhyloP100

-0.34

PrimateAI

Benign

0.23

PROVEAN

Uncertain

-2.7

REVEL

Benign

0.11

Sift

Benign

0.097

Sift4G

Benign

0.090

Polyphen

0.0030

Vest4

0.18

MVP

0.45

MPC

0.91

ClinPred

0.015

GERP RS

-3.8

Varity_R

0.034

gMVP

0.81

Mutation Taster

=98/2

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.28

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.28

Position offset: -46

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over