rs61750081

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM1PP2PP3_ModeratePP5_Very_Strong

The NM_000552.5(VWF):c.4247T>C(p.Ile1416Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,672 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

VWF
NM_000552.5 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:6

Conservation

PhyloP100: 8.60

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 Pathogenic. Variant got 13 ACMG points.

PM1

In a disulfide_bond (size 186) in uniprot entity VWF_HUMAN there are 58 pathogenic changes around while only 4 benign (94%) in NM_000552.5

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.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.922

PP5

Variant 12-6019171-A-G is Pathogenic according to our data. Variant chr12-6019171-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 439338.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VWF	NM_000552.5 link	c.4247T>C	p.Ile1416Thr	missense_variant	Exon 28 of 52	ENST00000261405.10	NP_000543.3	P04275-1
VWF	XM_047429501.1 link	c.4247T>C	p.Ile1416Thr	missense_variant	Exon 28 of 52		XP_047285457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VWF	ENST00000261405.10 link	c.4247T>C	p.Ile1416Thr	missense_variant	Exon 28 of 52	1	NM_000552.5	ENSP00000261405.5		P04275-1
VWF	ENST00000538635.5 link	n.421-25237T>C		intron_variant	Intron 5 of 5	4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251152

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135736

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461672

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727146

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:3

Jul 16, 2024

Mayo Clinic Laboratories, Mayo Clinic

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PP1_strong, PP5, PM2, PS3, PS4_moderate -

Jul 08, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The VWF c.4247T>C (p.Ile1416Thr) variant has been reported in the published literature in families with Type 2M von Willebrand disease (vWD) (PMID: 22537243 (2012), 23355534 (2013)). Published functional studies show that this variant significantly reduced glycoproteinIb (GPIb) binding (PMID: 22537243 (2012), 23355534 (2013)). The frequency of this variant in the general population, 0.000004 (1/251152 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Based on the available information, this variant is classified as pathogenic. -

Apr 19, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The VWF c.4247T>C; p.Ile1416Thr variant (rs61750081, ClinVar Variation ID: 439338) is reported in the literature in multiple individuals affected with VWF type 2M and shown to segregate with disease (McKinnon 2012, Starke 2013). This variant is only found on one allele in the Genome Aggregation Database (v2.1.1), indicating it is not a common polymorphism. Computational analyses predict that this variant is deleterious (REVEL: 0.724). In support of these predictions, functional analyses show the variant has an impact on the normal protein function (McKinnon 2012, Starke 2013). Based on available information, this variant is considered to be pathogenic. References: McKinnon TA et al. Characterisation of von Willebrand factor A1 domain mutants I1416N and I1416T: correlation of clinical phenotype with flow-based platelet adhesion. J Thromb Haemost. 2012 Jul;10(7):1409-16. PMID: 22537243. Starke RD et al. Cellular and molecular basis of von Willebrand disease: studies on blood outgrowth endothelial cells. Blood. 2013 Apr 4;121(14):2773-84. PMID: 23355534. -

Hereditary von Willebrand disease

Pathogenic:2

Nov 02, 2020

Illumina Laboratory Services, Illumina

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The VWF c.4247T>C (p.Ile1416Thr) variant is a missense variant that has been reported in two studies, in which it is found in a heterozygous state in 11 individuals from two families with von Willebrand disease type 2 (McKinnon et al. 2012; Starke et al. 2013). The large family reported in McKinnon et al. (2012) includes nine affected individuals across three generations. The p.Ile1416Thr variant was absent from nine control subjects. It is reported at a frequency of 0.000009 in the European (non-Finnish) population of the Genome Aggregation Database though this is based on one allele in a region of good sequence coverage so the variant is presumed to be rare. The variant is in the A1 domain of the protein, and transient transfection in HEK293T cells reduced expression by ~40% and significantly reduced GPIb-a (McKinnon et al. 2012). Another pathogenic variant, p.Ile1416Asn, is located at the same amino acid residue (McKinnon et al. 2012). Based on the collective evidence and application of the ACMG criteria, the p.Ile1416Thr variant is classified as pathogenic for von Willebrand disease. -

Mar 14, 2022

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

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: VWF c.4247T>C (p.Ile1416Thr) results in a non-conservative amino acid change located in the type A1 domain (IPR002035), affecting the binding site for platelet glycoprotein Ib (amino acids 1277 -1453; UniProt) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 in 251152 control chromosomes (gnomAD). c.4247T>C has been reported in the literature in multiple individuals in a family, who were affected with Von Willebrand Disease (McKinnon_2012). These data indicate that the variant is very likely to be associated with disease. This publication also reported experimental evidence evaluating an impact on protein function, and demonstrated significantly reduced glycoprotein Ib binding (McKinnon_2012). Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 , and both of them classified the variant as pathogenic/likely pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

von Willebrand disease type 2

Pathogenic:1

Jul 19, 2021

Genetics and Molecular Pathology, SA Pathology

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.56

BayesDel_addAF

Pathogenic

0.44

BayesDel_noAF

Pathogenic

0.40

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.36

Eigen

Pathogenic

0.88

Eigen_PC

Pathogenic

0.75

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.88

M_CAP

Pathogenic

0.79

MetaRNN

Pathogenic

0.92

MetaSVM

Pathogenic

0.95

MutationAssessor

Pathogenic

3.5

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.24

REVEL

Pathogenic

0.72

Sift

Uncertain

0.0030

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.88

MutPred

0.53

Gain of catalytic residue at G1417 (P = 0);

MVP

0.88

MPC

1.1

ClinPred

0.94

GERP RS

4.9

Varity_R

0.36

gMVP

0.80

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

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