rs548032105

Positions:

chr10-119672528-C-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The ENST00000369085.8(BAG3):c.781C>T(p.Arg261Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000039 in 1,613,858 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R261Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000038 ( 0 hom. )

Consequence

BAG3
ENST00000369085.8 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 1.37

Variant links:

Genes affected

BAG3 (HGNC:939): (BAG cochaperone 3) BAG proteins compete with Hip for binding to the Hsc70/Hsp70 ATPase domain and promote substrate release. All the BAG proteins have an approximately 45-amino acid BAG domain near the C terminus but differ markedly in their N-terminal regions. The protein encoded by this gene contains a WW domain in the N-terminal region and a BAG domain in the C-terminal region. The BAG domains of BAG1, BAG2, and BAG3 interact specifically with the Hsc70 ATPase domain in vitro and in mammalian cells. All 3 proteins bind with high affinity to the ATPase domain of Hsc70 and inhibit its chaperone activity in a Hip-repressible manner. [provided by RefSeq, Jul 2008]

BAG3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07849568).

BP6

Variant 10-119672528-C-T is Benign according to our data. Variant chr10-119672528-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 162779.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

BS2

High AC in GnomAd4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BAG3	NM_004281.4 linkuse as main transcript	c.781C>T	p.Arg261Trp	missense_variant	3/4	ENST00000369085.8	NP_004272.2
BAG3	XM_005270287.2 linkuse as main transcript	c.781C>T	p.Arg261Trp	missense_variant	3/4		XP_005270344.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BAG3	ENST00000369085.8 linkuse as main transcript	c.781C>T	p.Arg261Trp	missense_variant	3/4	1	NM_004281.4	ENSP00000358081	P1
BAG3	ENST00000450186.1 linkuse as main transcript	c.607C>T	p.Arg203Trp	missense_variant	4/5	5		ENSP00000410036

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000319

AC:

AN:

250410

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135412

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000383

AC:

AN:

1461512

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

727018

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.000186

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000288

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000459

AC:

AN:

152346

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Myofibrillar myopathy 6;C3151293:Dilated cardiomyopathy 1HH

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 18, 2023

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 261 of the BAG3 protein (p.Arg261Trp). This variant is present in population databases (rs548032105, gnomAD 0.02%). This missense change has been observed in individual(s) with BAG3-related conditions (Invitae). ClinVar contains an entry for this variant (Variation ID: 162779). 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 BAG3 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 11, 2020

The p.R261W variant (also known as c.781C>T), located in coding exon 3 of the BAG3 gene, results from a C to T substitution at nucleotide position 781. The arginine at codon 261 is replaced by tryptophan, an amino acid with dissimilar properties. This variant was detected in an individual with hypertrophic cardiomyopathy (HCM) who had variants in other cardiac genes (Forleo C et al. PLoS ONE, 2017 Jul;12:e0181842). This amino acid position is not well conserved in available 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 specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Apr 24, 2014

Arg261Trp in exon 3 of BAG3: This variant is not expected to have clinical signi ficance due to a lack of conservation across species, including mammals. Of note , 9 mammals have a tryptophan (Trp) at this position despite high nearby amino a cid conservation. In addition, computational prediction tools do not suggest a h igh likelihood of impact to the protein. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.17

T;T

Eigen

Benign

-0.91

Eigen_PC

Benign

-0.88

FATHMM_MKL

Benign

0.35

LIST_S2

Benign

0.84

T;T

M_CAP

Benign

0.027

MetaRNN

Benign

0.078

T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.92

L;.

MutationTaster

Benign

1.0

PrimateAI

Benign

0.24

PROVEAN

Benign

-1.9

N;D

REVEL

Benign

0.22

Sift

Benign

0.085

T;T

Sift4G

Benign

0.12

T;T

Polyphen

0.050

B;.

Vest4

0.22

MutPred

0.49

Loss of disorder (P = 0.059);.;

MVP

0.79

MPC

0.075

ClinPred

0.060

GERP RS

0.49

Varity_R

0.041

gMVP

0.32

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