rs876657414

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP5BP4

The NM_144992.5(VWA3B):ā€‹c.1865A>Cā€‹(p.Lys622Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000224 in 1,610,240 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: š‘“ 0.0000066 ( 0 hom., cov: 32)
Exomes š‘“: 0.000024 ( 0 hom. )

Consequence

VWA3B
NM_144992.5 missense

Scores

4
15

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 1.07
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 2-98217874-A-C is Pathogenic according to our data. Variant chr2-98217874-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 226428.Status of the report is no_assertion_criteria_provided, 0 stars.
BP4
Computational evidence support a benign effect (MetaRNN=0.24031329). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
VWA3BNM_144992.5 linkuse as main transcriptc.1865A>C p.Lys622Thr missense_variant 14/28 ENST00000477737.6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
VWA3BENST00000477737.6 linkuse as main transcriptc.1865A>C p.Lys622Thr missense_variant 14/281 NM_144992.5 P1Q502W6-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152182
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000192
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.0000240
AC:
35
AN:
1458058
Hom.:
0
Cov.:
30
AF XY:
0.0000276
AC XY:
20
AN XY:
725360
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000888
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152182
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74338
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000192
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000756

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Spinocerebellar ataxia, autosomal recessive 22 Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMSep 22, 2016- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.24
BayesDel_addAF
Benign
-0.19
T
BayesDel_noAF
Benign
-0.51
CADD
Benign
17
DANN
Uncertain
1.0
DEOGEN2
Benign
0.0046
T
Eigen
Benign
-0.58
Eigen_PC
Benign
-0.62
FATHMM_MKL
Benign
0.22
N
LIST_S2
Benign
0.72
T
M_CAP
Benign
0.010
T
MetaRNN
Benign
0.24
T
MetaSVM
Benign
-1.0
T
MutationAssessor
Uncertain
2.0
M
MutationTaster
Benign
1.0
N
PrimateAI
Benign
0.40
T
PROVEAN
Uncertain
-3.1
D
REVEL
Benign
0.095
Sift
Benign
0.086
T
Sift4G
Uncertain
0.023
D
Polyphen
0.96
D
Vest4
0.44
MutPred
0.52
Loss of methylation at K622 (P = 0.0065);
MVP
0.21
MPC
0.33
ClinPred
0.86
D
GERP RS
2.1
Varity_R
0.16
gMVP
0.42

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.

Other links and lift over

dbSNP: rs876657414; hg19: chr2-98834337; API