chr8-99778930-G-A

Position:

chr8-99778930-G-A

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_017890.5(VPS13B):c.7753G>A(p.Glu2585Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00449 in 1,613,934 control chromosomes in the GnomAD database, including 27 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0030 ( 4 hom., cov: 32)

Exomes 𝑓: 0.0046 ( 23 hom. )

Consequence

VPS13B
NM_017890.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:20

Conservation

PhyloP100: 3.37

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 Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0072244406).

BP6

Variant 8-99778930-G-A is Benign according to our data. Variant chr8-99778930-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 95867.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-99778930-G-A is described in Lovd as [Likely_benign]. Variant chr8-99778930-G-A is described in Lovd as [Likely_pathogenic].

BS2

High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
VPS13B	NM_017890.5 linkuse as main transcript	c.7753G>A	p.Glu2585Lys	missense_variant	42/62	ENST00000358544.7	NP_060360.3
VPS13B	NM_152564.5 linkuse as main transcript	c.7678G>A	p.Glu2560Lys	missense_variant	42/62	ENST00000357162.7	NP_689777.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VPS13B	ENST00000358544.7 linkuse as main transcript	c.7753G>A	p.Glu2585Lys	missense_variant	42/62	1	NM_017890.5	ENSP00000351346		Q7Z7G8-1
VPS13B	ENST00000357162.7 linkuse as main transcript	c.7678G>A	p.Glu2560Lys	missense_variant	42/62	1	NM_152564.5	ENSP00000349685	P1	Q7Z7G8-2

Frequencies

GnomAD3 genomes

AF:

0.00305

AC:

464

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000820

Gnomad AMI

AF:

0.00439

Gnomad AMR

AF:

0.00308

Gnomad ASJ

AF:

0.00231

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00249

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.00501

Gnomad OTH

AF:

0.00717

GnomAD3 exomes

AF:

0.00326

AC:

818

AN:

250916

Hom.:

AF XY:

0.00330

AC XY:

447

AN XY:

135596

show subpopulations

Gnomad AFR exome

AF:

0.000738

Gnomad AMR exome

AF:

0.00269

Gnomad ASJ exome

AF:

0.00139

Gnomad EAS exome

AF:

0.0000545

Gnomad SAS exome

AF:

0.00170

Gnomad FIN exome

AF:

0.000324

Gnomad NFE exome

AF:

0.00546

Gnomad OTH exome

AF:

0.00327

GnomAD4 exome

AF:

0.00464

AC:

6789

AN:

1461654

Hom.:

Cov.:

AF XY:

0.00471

AC XY:

3426

AN XY:

727126

show subpopulations

Gnomad4 AFR exome

AF:

0.000687

Gnomad4 AMR exome

AF:

0.00273

Gnomad4 ASJ exome

AF:

0.00195

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00184

Gnomad4 FIN exome

AF:

0.000412

Gnomad4 NFE exome

AF:

0.00551

Gnomad4 OTH exome

AF:

0.00440

GnomAD4 genome

AF:

0.00305

AC:

464

AN:

152280

Hom.:

Cov.:

AF XY:

0.00273

AC XY:

203

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.000818

Gnomad4 AMR

AF:

0.00307

Gnomad4 ASJ

AF:

0.00231

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00249

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.00501

Gnomad4 OTH

AF:

0.00710

Alfa

AF:

0.00420

Hom.:

Bravo

AF:

0.00372

TwinsUK

AF:

0.00431

AC:

ALSPAC

AF:

0.00701

AC:

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00477

AC:

ExAC

AF:

0.00322

AC:

391

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.00540

EpiControl

AF:

0.00646

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:20

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:6

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Oct 11, 2012	- -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 11, 2016	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. -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Feb 14, 2023	Variant summary: VPS13B c.7753G>A (p.Glu2585Lys) results in a conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.0033 in 250916 control chromosomes in the gnomAD database, including 3 homozygotes. The observed variant frequency is higher than the estimated maximal expected allele frequency for a pathogenic variant in VPS13B causing Cohen Syndrome phenotype (0.0025), strongly suggesting that the variant is benign. Eleven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (pathogenic n=1, VUS n=1, benign/likely benign n=9). Based on the evidence outlined above, the variant was classified as benign. -
Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Dec 28, 2023	The p.Glu2585Lys variant in VPS13B is classified as likely benign because it has been identified in 0.5% (341/68030) of European chromosomes by gnomAD including 4 homozygotes (http://gnomad.broadinstitute.org, v.3.1.2), which is higher than the expected frequency of a disease cuasing variant in this gene. In addition, computational prediction tools predict that this variant does not impact the protein. ACMG/AMP Criteria applied: BS1, BP4. -
Likely benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Dec 09, 2016	- -

not provided

Benign:6

Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Mar 17, 2017	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Dec 11, 2017	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2024	VPS13B: BP4, BS2 -

Cohen syndrome

Benign:6

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Molecular Genetics, Royal Melbourne Hospital	May 04, 2023	European Non-Finnish population allele frequency is 0.5105% (rs111751379, 680/128770 alleles, 3 homozygotes in gnomAD v2.1). Based on the classification scheme RMH Modified ACMG/AMP Guidelines v1.5.1, this variant is classified as LIKELY BENIGN. Following criteria are met: BS1 -
Likely benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	May 18, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 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 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. -
Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Dec 20, 2019	- -
Benign, criteria provided, single submitter	clinical testing	Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago	Dec 04, 2023	- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

May 06, 2019

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Retinitis pigmentosa

Benign:1

Benign, criteria provided, single submitter

research

Molecular Genetics Laboratory, Institute for Ophthalmic Research

Dec 12, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.092

.;T

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.38

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.025

MetaRNN

Benign

0.0072

T;T

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.1

.;M

MutationTaster

Benign

1.0

D;N;N

PrimateAI

Benign

0.29

PROVEAN

Benign

-1.2

N;N

REVEL

Benign

0.15

Sift

Benign

0.43

T;T

Sift4G

Benign

0.35

T;T

Polyphen

0.034

B;B

Vest4

0.28

MVP

0.58

MPC

0.14

ClinPred

0.011

GERP RS

3.8

Varity_R

0.061

gMVP

0.34

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