2-218262963-G-A

Position:

chr2-218262963-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_170699.3(GPBAR1):c.239G>A(p.Arg80Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000049 in 1,613,804 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R80W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

GPBAR1
NM_170699.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.930

Variant links:

Genes affected

GPBAR1 (HGNC:19680): (G protein-coupled bile acid receptor 1) This gene encodes a member of the G protein-coupled receptor (GPCR) superfamily. This enzyme functions as a cell surface receptor for bile acids. Treatment of cells expressing this GPCR with bile acids induces the production of intracellular cAMP, activation of a MAP kinase signaling pathway, and internalization of the receptor. The receptor is implicated in the suppression of macrophage functions and regulation of energy homeostasis by bile acids. Alternative splicing results in multiple transcript variants encoding the same protein. [provided by RefSeq, Jul 2008]

GPBAR1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.02738148).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GPBAR1	NM_170699.3 linkuse as main transcript	c.239G>A	p.Arg80Gln	missense_variant	2/2	ENST00000519574.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
GPBAR1	ENST00000519574.2 linkuse as main transcript	c.239G>A	p.Arg80Gln	missense_variant	2/2	1	NM_170699.3	P1
GPBAR1	ENST00000479077.5 linkuse as main transcript	c.239G>A	p.Arg80Gln	missense_variant	2/2	2		P1
GPBAR1	ENST00000521462.1 linkuse as main transcript	c.239G>A	p.Arg80Gln	missense_variant	2/2	2		P1
GPBAR1	ENST00000522678.5 linkuse as main transcript	c.239G>A	p.Arg80Gln	missense_variant	2/2	2		P1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00144

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:

0.000100

AC:

AN:

248940

Hom.:

AF XY:

0.0000888

AC XY:

AN XY:

135064

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00139

Gnomad EAS exome

AF:

0.000223

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000266

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.0000472

AC:

AN:

1461668

Hom.:

Cov.:

AF XY:

0.0000468

AC XY:

AN XY:

727114

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00107

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000243

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152136

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74304

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00144

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:

0.000251

Hom.:

Bravo

AF:

0.0000491

ESP6500AA

AF:

0.000459

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jun 08, 2017

- -

GPBAR1-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 02, 2023

The GPBAR1 c.239G>A variant is predicted to result in the amino acid substitution p.Arg80Gln. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.14% of alleles in individuals of Ashkenazi Jewish descent in gnomAD (http://gnomad.broadinstitute.org/variant/2-219127686-G-A). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.041

T;T;T;T

Eigen

Benign

-0.77

Eigen_PC

Benign

-0.65

FATHMM_MKL

Benign

0.18

LIST_S2

Benign

0.65

.;.;.;T

M_CAP

Benign

0.0039

MetaRNN

Benign

0.027

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;N;N;N

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.24

PROVEAN

Benign

-0.22

N;N;N;N

REVEL

Benign

0.080

Sift

Benign

0.30

T;T;T;T

Sift4G

Benign

0.41

T;T;T;T

Polyphen

0.068

B;B;B;B

Vest4

0.13

MVP

0.19

MPC

0.048

ClinPred

0.014

GERP RS

2.1

Varity_R

0.057

gMVP

0.22

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