Variant 2-98115732-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_144992.5(VWA3B):c.277G>T(p.Gly93Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000342 in 1,460,830 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 Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

VWA3B
NM_144992.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.52

Variant links:

Genes affected

VWA3B (HGNC:28385): (von Willebrand factor A domain containing 3B) This gene encodes an intracellular protein that contains a von Willebrand factor type A domain. Intracellular proteins with VWA domains are thought to function in transcription, DNA repair, ribosomal and membrane transport and the proteasome. Mutations in this gene are associated with Spinocerebellar ataxia, autosomal recessive 22. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, May 2017]

VWA3B links:

VWA3B (HGNC:):

VWA3B links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.83

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
VWA3B	NM_144992.5 linkuse as main transcript	c.277G>T	p.Gly93Cys	missense_variant	3/28	ENST00000477737.6	NP_659429.4	Q502W6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VWA3B	ENST00000477737.6 linkuse as main transcript	c.277G>T	p.Gly93Cys	missense_variant	3/28	1	NM_144992.5	ENSP00000417955.1		Q502W6-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000402

AC:

AN:

248796

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135046

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1460830

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726796

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:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 24, 2022

The c.277G>T (p.G93C) alteration is located in exon 3 (coding exon 2) of the VWA3B gene. This alteration results from a G to T substitution at nucleotide position 277, causing the glycine (G) at amino acid position 93 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.33

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.060

CADD

Pathogenic

DANN

Benign

0.95

DEOGEN2

Benign

0.26

Eigen

Benign

0.14

Eigen_PC

Benign

0.18

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.85

M_CAP

Benign

0.021

MetaRNN

Pathogenic

0.83

MetaSVM

Benign

-1.1

MutationAssessor

Pathogenic

3.1

PrimateAI

Benign

0.42

PROVEAN

Pathogenic

-6.4

REVEL

Uncertain

0.37

Sift

Uncertain

0.0020

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.71

MutPred

0.64

Loss of catalytic residue at G93 (P = 0.0361);

MVP

0.47

MPC

0.47

ClinPred

0.97

GERP RS

4.7

Varity_R

0.62

gMVP

0.65

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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