chr1-155235772-C-A

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM1PM2PP3_ModeratePP5_Very_Strong

The NM_000157.4(GBA1):c.1297G>T(p.Val433Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000991 in 1,614,120 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 (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

GBA1
NM_000157.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:10O:1

Conservation

PhyloP100: 5.47

Variant links:

Genes affected

GBA1 (HGNC:4177): (glucosylceramidase beta 1) This gene encodes a lysosomal membrane protein that cleaves the beta-glucosidic linkage of glycosylceramide, an intermediate in glycolipid metabolism. Mutations in this gene cause Gaucher disease, a lysosomal storage disease characterized by an accumulation of glucocerebrosides. A related pseudogene is approximately 12 kb downstream of this gene on chromosome 1. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2010]

GBA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM1

In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_000157.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.9

PP5

Variant 1-155235772-C-A is Pathogenic according to our data. Variant chr1-155235772-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 4292.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GBA1	NM_000157.4 link	c.1297G>T	p.Val433Leu	missense_variant	Exon 9 of 11	ENST00000368373.8	NP_000148.2	P04062-1A0A068F658

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GBA1	ENST00000368373.8 link	c.1297G>T	p.Val433Leu	missense_variant	Exon 9 of 11	1	NM_000157.4	ENSP00000357357.3		P04062-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

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

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251448

Hom.:

AF XY:

0.0000441

AC XY:

AN XY:

135904

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000794

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461892

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000497

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000850

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:10Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Gaucher disease

Pathogenic:2Other:1

GeneReviews

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

- -

Mar 17, 2017

Natera, Inc.

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

May 08, 2017

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: The GBA c.1297G>T (p.Val433Leu) variant (alternatively also known as V394L) involves the alteration of a conserved nucleotide, is located in TIM-barrel domain of the protein (InterPro) and is predicted to be damaging by 2/4 in silico tools (SNPsandGO not captured due to low reliability index). This variant was found in 4/120330 control chromosomes from ExAC at a frequency of 0.0000332, which does not exceed the estimated maximal expected allele frequency of a pathogenic GBA variant (0.005). The variant is one of the common pathogenic variants in Ashkenazi population (Beutler_1993, Elstein_2005, and Orenstein_2014). In a genotype-phenotype study (Elstein_2005) that included N370S/V394L compound heterozygotes, most of the patients had mild disease; only 8 patients required specific enzyme therapy, none was splenectomized. Only 3 patients had skeletal involvement, but other baseline parameters were very diverse. Authors note that although genotype-phenotype correlation in this case may be difficult, because the V394L mutation when seen in a compound heterozygote with a null allele results in neuronopathic disease, one cannot conclude that this mutation is protective of neuronopathic disease. Patients carrying this variant in homozygous state have not been reported so far. Functional studies in insect cell system and mouse models have shown that the variant leads to severe decrease in enzymatic activity (11-15 % of wildtype activity) and neurological phenotype is recapitulated in transgenic mice carrying this variant (Grace_1994, Liou_2006, Xu_2011). Multiple clinical diagnostic laboratories/reputable databases have classified this variant as likely pathogenic/pathogenic. Taken together, this variant is classified as pathogenic. -

Gaucher disease type I

Pathogenic:2

Jan 01, 1991

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Dec 11, 2019

Myriad Genetics, Inc.

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

NM_001005741.2(GBA):c.1297G>T(V433L, aka V394L) is classified as likely pathogenic in the context of Gaucher disease and can be associated with Type 1, 2 or 3. Sources cited for classification include the following: PMID 10796875, 8294487, 16293621, 2508065, 21257328 and 12595585. Classification of NM_001005741.2(GBA):c.1297G>T(V433L, aka V394L) is based on the following criteria: This variant has been observed more frequently in patients with clinical diagnoses than in healthy populations. Please note: this variant was assessed in the context of healthy population screening. -

not provided

Pathogenic:2

Mar 10, 2022

Revvity Omics, Revvity

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 13, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 433 of the GBA protein (p.Val433Leu). This variant is present in population databases (rs80356769, gnomAD 0.07%). This missense change has been observed in individual(s) with Gaucher disease and Parkinson's disease (PMID: 10714667, 24685312, 25653295, 27271787). This variant is also known as p.Val394Leu or V394L. ClinVar contains an entry for this variant (Variation ID: 4292). 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 not expected to disrupt GBA protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change affects GBA function (PMID: 8294487, 14578207, 21257328). For these reasons, this variant has been classified as Pathogenic. -

Parkinson disease, late-onset

Pathogenic:1

May 03, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Gaucher disease type II;C0268251:Gaucher disease type III;C0752347:Lewy body dementia;C1842704:Gaucher disease perinatal lethal;C1856476:Gaucher disease-ophthalmoplegia-cardiovascular calcification syndrome;C1961835:Gaucher disease type I;C3160718:Parkinson disease, late-onset

Pathogenic:1

Nov 02, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Gaucher disease type II;C0268251:Gaucher disease type III;C1856476:Gaucher disease-ophthalmoplegia-cardiovascular calcification syndrome;C1961835:Gaucher disease type I

Pathogenic:1

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Gaucher disease type III

Pathogenic:1

Jan 01, 1991

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Pathogenic

0.50

BayesDel_noAF

Pathogenic

0.48

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.91

D;D;.;.

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

.;D;D;D

M_CAP

Pathogenic

0.58

MetaRNN

Pathogenic

0.90

D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.3

M;M;.;.

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-2.0

N;N;N;N

REVEL

Pathogenic

0.85

Sift

Uncertain

0.024

D;D;D;D

Sift4G

Uncertain

0.045

D;D;D;T

Polyphen

0.73

P;P;.;.

Vest4

0.90

MutPred

0.80

Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);.;.;

MVP

0.96

MPC

0.83

ClinPred

0.55

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.52

gMVP

0.88

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