chr12-6056985-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4_StrongBS2_Supporting

The NM_000552.5(VWF):c.1817G>A(p.Arg606Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000224 in 1,545,114 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 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 0.0012 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00012 ( 1 hom. )

Consequence

VWF
NM_000552.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:2

Conservation

PhyloP100: 0.460

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 Likely_benign. Variant got -4 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.

BP4

Computational evidence support a benign effect (MetaRNN=0.008060724).

BS2

High AC in GnomAd4 at 184 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.1817G>A	p.Arg606Gln	missense_variant	Exon 15 of 52	ENST00000261405.10	NP_000543.3	P04275-1
VWF	XM_047429501.1 link	c.1817G>A	p.Arg606Gln	missense_variant	Exon 15 of 52		XP_047285457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VWF	ENST00000261405.10 link	c.1817G>A	p.Arg606Gln	missense_variant	Exon 15 of 52	1	NM_000552.5	ENSP00000261405.5		P04275-1
VWF	ENST00000538635.5 link	n.420+53530G>A		intron_variant	Intron 5 of 5	4

Frequencies

GnomAD3 genomes

AF:

0.00121

AC:

184

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00417

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000208

AC:

AN:

144058

Hom.:

AF XY:

0.000153

AC XY:

AN XY:

78350

show subpopulations

Gnomad AFR exome

AF:

0.00337

Gnomad AMR exome

AF:

0.0000398

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000871

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000233

GnomAD4 exome

AF:

0.000116

AC:

162

AN:

1392792

Hom.:

Cov.:

AF XY:

0.000106

AC XY:

AN XY:

687914

show subpopulations

Gnomad4 AFR exome

AF:

0.00388

Gnomad4 AMR exome

AF:

0.000110

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000550

Gnomad4 SAS exome

AF:

0.0000503

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000277

Gnomad4 OTH exome

AF:

0.000413

GnomAD4 genome

AF:

0.00121

AC:

184

AN:

152322

Hom.:

Cov.:

AF XY:

0.00113

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.00416

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000154

Hom.:

Bravo

AF:

0.00148

ESP6500AA

AF:

0.00243

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000199

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Jun 28, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The VWF c.1817G>A (p.Arg606Gln) variant has not been reported in the published literature in individuals with vWF-related conditions. The frequency of this variant in the general population, 0.0046 (77/16714 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools (i.e., MutationTaster and PolyPhen-2) for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Additional analysis using software algorithms for the prediction of the effect of nucleotide changes on VWF mRNA splicing yielded predictions that this variant may result in the gain of a cryptic splice site without affecting the natural splice sites (Alamut Visual (http://www.interactive-biosoftware.com/)). Based on the available information, we are unable to determine the clinical significance of this variant. -

Jun 19, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The VWF c.1817G>A; p.Arg606Gln variant (rs200586078), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 391499). This variant is found in the general population with an overall allele frequency of 0.05% (82/175422 alleles) in the Genome Aggregation Database (v2.1.1). Computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0.175). Due to limited information, the clinical significance of this variant is uncertain at this time. -

Jun 01, 2023

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1Benign:1

Feb 19, 2019

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 23, 2025

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

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: VWF c.1817G>A (p.Arg606Gln) results in a conservative amino acid change located in the VWF/SSPO/Zonadhesin-like, cysteine-rich domain (IPR014853) of the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00021 in 144058 control chromosomes, predominantly at a frequency of 0.0034 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database exceeds the estimated maximal expected allele frequency for a pathogenic variant in VWF causing Von Willebrand Disease phenotype. To our knowledge, no occurrence of c.1817G>A in individuals affected with Von Willebrand Disease and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 391499). Based on the evidence outlined above, the variant was classified as likely benign. -

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

Uncertain:1

Jul 22, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

VWF-related disorder

Benign:1

Aug 29, 2024

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.52

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.23

Eigen

Benign

-0.95

Eigen_PC

Benign

-0.86

FATHMM_MKL

Benign

0.28

LIST_S2

Benign

0.85

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.0081

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.17

PrimateAI

Benign

0.24

PROVEAN

Benign

-0.21

REVEL

Benign

0.17

Sift

Benign

0.92

Sift4G

Benign

0.34

Polyphen

0.037

Vest4

0.11

MVP

0.41

MPC

0.22

ClinPred

0.034

GERP RS

-3.7

Varity_R

0.032

gMVP

0.26

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