12-5949131-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM2 PP2

The NM_000552.5(VWF):c.8326C>T(p.Pro2776Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P2776L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: VWF NM_000552.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.74

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a domain CTCK (size 88) in uniprot entity VWF_HUMAN there are 5 pathogenic changes around while only 1 benign (83%) in NM_000552.5
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, VWF

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
VWF	NM_000552.5	c.8326C>T	p.Pro2776Ser	missense_variant	52/52	ENST00000261405.10
VWF	XM_047429501.1	c.8326C>T	p.Pro2776Ser	missense_variant	52/52

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
VWF	ENST00000261405.10	c.8326C>T	p.Pro2776Ser	missense_variant	52/52	1	NM_000552.5	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Nov 07, 2022

Not observed at significant frequency in large population cohorts (gnomAD); 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 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Benign	-0.042	T
BayesDel_noAF	Benign	-0.30
Cadd	Uncertain	25
Dann	Uncertain	0.99
DEOGEN2	Benign	0.40	T
Eigen	Uncertain	0.39
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Benign	0.64	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.081	D
MetaRNN	Uncertain	0.45	T
MetaSVM	Benign	-0.78	T
MutationAssessor	Pathogenic	3.1	M
MutationTaster	Benign	0.98	N
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.35	N
REVEL	Benign	0.17
Sift	Benign	0.034	D
Sift4G	Benign	0.15	T
Polyphen		0.94	P
Vest4		0.32
MutPred		0.46		Gain of catalytic residue at S2775 (P = 0);
MVP		0.78
MPC		0.83
ClinPred		0.86	D
GERP RS		3.9
Varity_R		0.18
gMVP		0.85

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-6058297; COSMIC: COSV54627279; COSMIC: COSV54627279;