2-70958103-G-A

Position:

chr2-70958103-G-A

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_001692.4(ATP6V1B1):c.232G>A(p.Gly78Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000026 in 1,614,034 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 Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. G78G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

ATP6V1B1
NM_001692.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:5

Conservation

PhyloP100: 7.75

Variant links:

Genes affected

ATP6V1B1 (HGNC:853): (ATPase H+ transporting V1 subunit B1) This gene encodes a component of vacuolar ATPase (V-ATPase), a multisubunit enzyme that mediates acidification of eukaryotic intracellular organelles. V-ATPase dependent organelle acidification is necessary for such intracellular processes as protein sorting, zymogen activation, receptor-mediated endocytosis, and synaptic vesicle proton gradient generation. V-ATPase is composed of a cytosolic V1 domain and a transmembrane V0 domain. The V1 domain consists of three A and three B subunits, two G subunits plus the C, D, E, F, and H subunits. The V1 domain contains the ATP catalytic site. The V0 domain consists of five different subunits: a, c, c', c'', and d. Additional isoforms of many of the V1 and V0 subunit proteins are encoded by multiple genes or alternatively spliced transcript variants. This encoded protein is one of two V1 domain B subunit isoforms and is found in the kidney. Mutations in this gene cause distal renal tubular acidosis associated with sensorineural deafness. [provided by RefSeq, Jul 2008]

ATP6V1B1 links:

VAX2 (HGNC:12661): (ventral anterior homeobox 2) This gene encodes a homeobox protein and is almost exclusively expressed in the ventral portion of the retina during development. In mouse studies, this gene was found to be required for the correct formation of the optic fissure and other aspects of retinal development. [provided by RefSeq, Sep 2008]

VAX2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.962

PP5

Variant 2-70958103-G-A is Pathogenic according to our data. Variant chr2-70958103-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 12229.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-70958103-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATP6V1B1	NM_001692.4 linkuse as main transcript	c.232G>A	p.Gly78Arg	missense_variant	3/14	ENST00000234396.10
ATP6V1B1	XM_011532907.3 linkuse as main transcript	c.352G>A	p.Gly118Arg	missense_variant	2/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATP6V1B1	ENST00000234396.10 linkuse as main transcript	c.232G>A	p.Gly78Arg	missense_variant	3/14	1	NM_001692.4	P1

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000217

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

250798

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135580

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000198

AC:

AN:

1461828

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

727200

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000189

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74360

show subpopulations

Gnomad4 AFR

AF:

0.000217

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000324

Hom.:

Bravo

AF:

0.0000680

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jun 27, 2023	For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects ATP6V1B1 function (PMID: 18368028). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt ATP6V1B1 protein function. ClinVar contains an entry for this variant (Variation ID: 12229). This missense change has been observed in individual(s) with ATP6V1B1-related conditions (PMID: 12566520, 23923981, 25498251, 34159584). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is present in population databases (rs121964881, gnomAD 0.02%). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 78 of the ATP6V1B1 protein (p.Gly78Arg). -
Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jan 20, 2021	Published functional studies demonstrate G78R fails to interact with the E subunit in HEK293 cells (Fuster et al., 2008); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 23729491, 9916796, 16769747, 23923981, 16611712, 7499943, 27247958, 28188436, 12566520, 18368028) -

Renal tubular acidosis with progressive nerve deafness

Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Sep 03, 2021	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Feb 01, 2003	- -

Inborn genetic diseases

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 04, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.46

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.81

D;.;.

Eigen

Pathogenic

0.97

Eigen_PC

Pathogenic

0.86

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

1.0

D;D;D

M_CAP

Uncertain

0.23

MetaRNN

Pathogenic

0.96

D;D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

4.4

H;.;.

MutationTaster

Benign

1.0

A;A

PrimateAI

Uncertain

0.74

PROVEAN

Pathogenic

-6.7

D;.;D

REVEL

Pathogenic

0.94

Sift

Pathogenic

0.0

D;.;D

Sift4G

Pathogenic

0.0

D;.;D

Polyphen

1.0

D;.;D

Vest4

0.96

MutPred

0.95

Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);

MVP

0.99

MPC

1.1

ClinPred

1.0

GERP RS

4.8

Varity_R

0.98

gMVP

0.94

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