rs216321

Variant names:

• chr12-6034818-T-A
• rs216321
• NM_000552.5:c.2555A>T

Your query was ambiguous. Multiple possible variants found:

• chr12-6034818-T-A
• chr12-6034818-T-C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 5P and 2B. PM1 PM2 PP2 BP4_Moderate

The NM_000552.5(VWF):​c.2555A>T​(p.Gln852Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q852E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: VWF NM_000552.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.552
• Publications: 59 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_000552.5
• PM2: Very rare variant in population databases, with high coverage
• 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.
• BP4: Computational evidence support a benign effect (MetaRNN=0.23445272).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VWF	NM_000552.5	c.2555A>T	p.Gln852Leu	missense_variant	Exon 20 of 52	ENST00000261405.10	NP_000543.3
VWF	XM_047429501.1	c.2555A>T	p.Gln852Leu	missense_variant	Exon 20 of 52		XP_047285457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VWF	ENST00000261405.10	c.2555A>T	p.Gln852Leu	missense_variant	Exon 20 of 52	1	NM_000552.5	ENSP00000261405.5
VWF	ENST00000538635.5	n.421-40884A>T		intron_variant	Intron 5 of 5	4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 69

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.095
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	12
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.72	D
Eigen	Benign	-0.73
Eigen_PC	Benign	-0.67
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.13	T
M_CAP	Uncertain	0.094	D
MetaRNN	Benign	0.23	T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	1.5	L
PhyloP100		-0.55
PrimateAI	Benign	0.25	T
PROVEAN	Uncertain	-3.5	D
REVEL	Benign	0.050
Sift	Uncertain	0.019	D
Sift4G	Uncertain	0.015	D
Polyphen		0.011	B
Vest4		0.19
MutPred		0.49		Gain of catalytic residue at K855 (P = 0);
MVP		0.64
MPC		0.18
ClinPred		0.75	D
GERP RS		0.42
Varity_R		0.18
gMVP		0.49
Mutation Taster		=76/24	polymorphism

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

Other links and lift over

dbSNP: rs216321; hg19: chr12-6143984;