9-77316185-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_033305.3(VPS13A):c.4642G>A(p.Glu1548Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00249 in 1,608,202 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. E1548E) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0021 ( 2 hom., cov: 32)

Exomes 𝑓: 0.0025 ( 12 hom. )

Consequence

VPS13A
NM_033305.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: 0.0870

Publications

7 publications found

Variant links:

Genes affected

VPS13A (HGNC:1908): (vacuolar protein sorting 13 homolog A) The protein encoded by this gene may control steps in the cycling of proteins through the trans-Golgi network to endosomes, lysosomes and the plasma membrane. Mutations in this gene cause the autosomal recessive disorder, chorea-acanthocytosis. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jul 2008]

VPS13A Gene-Disease associations (from GenCC):

chorea-acanthocytosis
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)

VPS13A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0038916469).

BP6

Variant 9-77316185-G-A is Benign according to our data. Variant chr9-77316185-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 448863.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00211 (320/151702) while in subpopulation AMR AF = 0.00355 (54/15220). AF 95% confidence interval is 0.00281. There are 2 homozygotes in GnomAd4. There are 148 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VPS13A	NM_033305.3 link	c.4642G>A	p.Glu1548Lys	missense_variant	Exon 39 of 72	ENST00000360280.8	NP_150648.2	Q96RL7-1
VPS13A	NM_001018037.2 link	c.4525G>A	p.Glu1509Lys	missense_variant	Exon 38 of 71		NP_001018047.1	Q96RL7-3
VPS13A	NM_015186.4 link	c.4642G>A	p.Glu1548Lys	missense_variant	Exon 39 of 69		NP_056001.1	Q96RL7-2
VPS13A	NM_001018038.3 link	c.4642G>A	p.Glu1548Lys	missense_variant	Exon 39 of 69		NP_001018048.1	Q96RL7-4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VPS13A	ENST00000360280.8 link	c.4642G>A	p.Glu1548Lys	missense_variant	Exon 39 of 72	1	NM_033305.3	ENSP00000353422.3		Q96RL7-1

Frequencies

GnomAD3 genomes

AF:

0.00211

AC:

320

AN:

151584

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000436

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00355

Gnomad ASJ

AF:

0.00606

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000417

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.00315

Gnomad OTH

AF:

0.00384

GnomAD2 exomes

AF:

0.00206

AC:

514

AN:

249830

AF XY:

0.00216

show subpopulations

Gnomad AFR exome

AF:

0.000622

Gnomad AMR exome

AF:

0.00157

Gnomad ASJ exome

AF:

0.00508

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.00322

Gnomad OTH exome

AF:

0.00411

GnomAD4 exome

AF:

0.00253

AC:

3687

AN:

1456500

Hom.:

Cov.:

AF XY:

0.00247

AC XY:

1791

AN XY:

724712

show subpopulations

African (AFR)

AF:

0.000510

AC:

AN:

33324

American (AMR)

AF:

0.00173

AC:

AN:

44626

Ashkenazi Jewish (ASJ)

AF:

0.00480

AC:

125

AN:

26056

East Asian (EAS)

AF:

0.00

AC:

AN:

39568

South Asian (SAS)

AF:

0.000209

AC:

AN:

85968

European-Finnish (FIN)

AF:

0.000319

AC:

AN:

53250

Middle Eastern (MID)

AF:

0.00610

AC:

AN:

5734

European-Non Finnish (NFE)

AF:

0.00289

AC:

3204

AN:

1107802

Other (OTH)

AF:

0.00322

AC:

194

AN:

60172

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

164

329

493

658

822

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

216

324

432

540

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00211

AC:

320

AN:

151702

Hom.:

Cov.:

AF XY:

0.00200

AC XY:

148

AN XY:

74120

show subpopulations

African (AFR)

AF:

0.000435

AC:

AN:

41420

American (AMR)

AF:

0.00355

AC:

AN:

15220

Ashkenazi Jewish (ASJ)

AF:

0.00606

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.000418

AC:

AN:

4788

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10500

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00316

AC:

214

AN:

67826

Other (OTH)

AF:

0.00380

AC:

AN:

2104

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00272

Hom.:

Bravo

AF:

0.00214

TwinsUK

AF:

0.00243

AC:

ALSPAC

AF:

0.00234

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00256

AC:

ExAC

AF:

0.00206

AC:

250

EpiCase

AF:

0.00306

EpiControl

AF:

0.00350

ClinVar

Significance: Likely benign

Submissions summary: Benign:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:6

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, Amsterdam University Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jan 15, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jul 28, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Dec 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

VPS13A: BP4, BS2 -

Chorea-acanthocytosis

Benign:3

Nov 11, 2019

Natera, Inc.

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

not specified

Benign:1

Oct 05, 2020

Athena Diagnostics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

VPS13A-related disorder

Benign:1

Mar 01, 2021

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.082

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.64

CADD

Benign

9.8

(source)

DANN

Benign

0.78

DEOGEN2

Benign

0.18

.;.;T;.;.;.;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.096

LIST_S2

Uncertain

0.91

.;D;.;.;D;D;D

M_CAP

Benign

0.0074

MetaRNN

Benign

0.0039

T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.1

M;.;M;M;M;M;M

PhyloP100

0.087

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.93

N;N;N;N;.;.;.

REVEL

Benign

0.045

Sift

Benign

0.44

T;T;T;T;.;.;.

Sift4G

Benign

0.56

T;T;T;T;.;.;.

Polyphen

0.13

B;B;B;B;B;B;B

Vest4

0.20

MVP

0.24

MPC

0.15

ClinPred

0.0016

GERP RS

-0.51

Varity_R

0.084

gMVP

0.30

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over