8-99136740-A-G

Position:

chr8-99136740-A-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The ENST00000357162.7(VPS13B):c.1639A>G(p.Thr547Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000214 in 1,613,576 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T547S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00023 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

VPS13B
ENST00000357162.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:4

Conservation

PhyloP100: 3.84

Variant links:

Genes affected

VPS13B (HGNC:2183): (vacuolar protein sorting 13 homolog B) This gene encodes a potential transmembrane protein that may function in vesicle-mediated transport and sorting of proteins within the cell. This protein may play a role in the development and the function of the eye, hematological system, and central nervous system. Mutations in this gene have been associated with Cohen syndrome. Multiple splice variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

VPS13B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01587966).

BP6

Variant 8-99136740-A-G is Benign according to our data. Variant chr8-99136740-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 374535.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=4}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
VPS13B	NM_017890.5 linkuse as main transcript	c.1639A>G	p.Thr547Ala	missense_variant	12/62	ENST00000358544.7	NP_060360.3
VPS13B	NM_152564.5 linkuse as main transcript	c.1639A>G	p.Thr547Ala	missense_variant	12/62	ENST00000357162.7	NP_689777.3
VPS13B	NM_015243.3 linkuse as main transcript	c.1639A>G	p.Thr547Ala	missense_variant	12/18		NP_056058.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VPS13B	ENST00000358544.7 linkuse as main transcript	c.1639A>G	p.Thr547Ala	missense_variant	12/62	1	NM_017890.5	ENSP00000351346		Q7Z7G8-1
VPS13B	ENST00000357162.7 linkuse as main transcript	c.1639A>G	p.Thr547Ala	missense_variant	12/62	1	NM_152564.5	ENSP00000349685	P1	Q7Z7G8-2

Frequencies

GnomAD3 genomes

AF:

0.000230

AC:

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00439

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.000865

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000265

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.000235

AC:

AN:

251366

Hom.:

AF XY:

0.000265

AC XY:

AN XY:

135846

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.000893

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000369

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000213

AC:

311

AN:

1461260

Hom.:

Cov.:

AF XY:

0.000224

AC XY:

163

AN XY:

726934

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.000996

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000220

Gnomad4 OTH exome

AF:

0.000414

GnomAD4 genome

AF:

0.000230

AC:

AN:

152316

Hom.:

Cov.:

AF XY:

0.000255

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.000392

Gnomad4 ASJ

AF:

0.000865

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000265

Gnomad4 OTH

AF:

0.000947

Alfa

AF:

0.000370

Hom.:

Bravo

AF:

0.000261

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000321

AC:

EpiCase

AF:

0.000600

EpiControl

AF:

0.000652

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Cohen syndrome

Uncertain:1Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 22, 2024	- -
Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Oct 21, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not specified

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 09, 2018	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Oct 27, 2015	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 12, 2020

The p.T547A variant (also known as c.1639A>G), located in coding exon 11 of the VPS13B gene, results from an A to G substitution at nucleotide position 1639. The threonine at codon 547 is replaced by alanine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species, and alanine is the reference amino acid in other vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Aug 01, 2016

- -

VPS13B-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 19, 2021

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

0.069

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.064

.;.;T

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.39

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.77

T;T;T

M_CAP

Benign

0.021

MetaRNN

Benign

0.016

T;T;T

MetaSVM

Benign

-0.91

MutationAssessor

Benign

1.1

L;L;L

MutationTaster

Benign

0.76

N;N;N;N

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.2

N;N;N

REVEL

Benign

0.10

Sift

Benign

0.76

T;T;T

Sift4G

Uncertain

0.054

T;T;T

Polyphen

0.015

B;B;B

Vest4

0.30

MVP

0.65

MPC

0.12

ClinPred

0.023

GERP RS

2.6

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.0

Varity_R

0.049

gMVP

0.17

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

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