rs730880054

Variant names:

Variant summary

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

The NM_004281.4(BAG3):c.554C>T(p.Ser185Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000644 in 1,613,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

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

Exomes 𝑓: 0.000062 ( 0 hom. )

Consequence

BAG3
NM_004281.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:4

Conservation

PhyloP100: 2.55

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=0.21972421).

BP6

Variant 10-119672301-C-T is Benign according to our data. Variant chr10-119672301-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 180282.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=4}.

BS2

High AC in GnomAd4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BAG3	NM_004281.4 link	c.554C>T	p.Ser185Leu	missense_variant	Exon 3 of 4	ENST00000369085.8	NP_004272.2	O95817
BAG3	XM_005270287.2 link	c.554C>T	p.Ser185Leu	missense_variant	Exon 3 of 4		XP_005270344.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BAG3	ENST00000369085.8 link	c.554C>T	p.Ser185Leu	missense_variant	Exon 3 of 4	1	NM_004281.4	ENSP00000358081.4		O95817
BAG3	ENST00000450186.1 link	c.380C>T	p.Ser127Leu	missense_variant	Exon 4 of 5	5		ENSP00000410036.1		C9JFK9

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.000191

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000602

AC:

AN:

249352

Hom.:

AF XY:

0.0000370

AC XY:

AN XY:

135228

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000116

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000623

AC:

AN:

1461700

Hom.:

Cov.:

AF XY:

0.0000660

AC XY:

AN XY:

727168

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.000115

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.0000728

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.000191

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000197

Hom.:

Bravo

AF:

0.000113

ExAC

AF:

0.0000741

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:2

Oct 13, 2016

Stanford Center for Inherited Cardiovascular Disease, Stanford University

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: provider interpretation

p.Ser185Leu (c.554C>T) in exon 3 of the BAG3 gene (NM_004281.3) We have seen this variant in a person with HCM. Testing was done by Invitae. Given the lack of case data and relatively high frequency in a population dataset, we consider this variant to be of uncertain significance and we do not feel it is suitable for assessing risk in healthy relatives ("predictive genetic testing"). It is listed in ClinVar by BluePrint Genetics, classified as a variant of uncertain significance. No phenotypica data is listed, but it was noted that the variant was found together with pathogenic MYH7 variant c.2609G>A. It has not been reported in the literature (as of 10/13/2016). The Invitae report notes, "The serine residue is weakly conserved and there is a large physicochemical difference between serine and leucine. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0")." The variant was reported online in 16 of 280,452 individuals in the Genome Aggregation Consortium Dataset (gnomAD; http://gnomad.broadinstitute.org/), which currently includes variant calls on 126,216 unrelated individuals of African, Asian, European, Ashkenazi, Latino descent. Specifically, the variant was observed in 13 of 62,672 individuals of non-Finnish European descent (0.01% MAF) and 1 of 18,217 Latino people (0.0027%). The phenotype of those individuals is not publicly available. The dataset is comprised of multiple cohorts, some of which were recruited from the general population, others were enriched for common cardiovascular disease. -

Dec 30, 2020

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

BAG3: BS2 -

May 12, 2022

Revvity Omics, Revvity

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Myofibrillar myopathy 6;C3151293:Dilated cardiomyopathy 1HH

Uncertain:1

Jan 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 185 of the BAG3 protein (p.Ser185Leu). This variant is present in population databases (rs730880054, gnomAD 0.01%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with BAG3-related conditions. ClinVar contains an entry for this variant (Variation ID: 180282). 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. -

Dilated cardiomyopathy 1HH

Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Primary familial hypertrophic cardiomyopathy

Uncertain:1

Jul 23, 2014

Blueprint Genetics

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Cardiovascular phenotype

Uncertain:1

May 22, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.S185L variant (also known as c.554C>T), located in coding exon 3 of the BAG3 gene, results from a C to T substitution at nucleotide position 554. The serine at codon 185 is replaced by leucine, an amino acid with dissimilar properties. This alteration has been reported in a limb girdle muscular dystrophy (LGMD) cohort; however, additional alterations in the ANO5 gene were also identified in the case (Jarmula A et al. Sci Rep, 2019 08;9:11533). Additionally, this alteration has been detected in a peripartum cardiomyopathy cohort (Goli R et al. Circulation, 2021 May;143:1852-1862). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -

not specified

Benign:1

Jun 19, 2023

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

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: BAG3 c.554C>T (p.Ser185Leu) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 6e-05 in 249352 control chromosomes. The observed variant frequency is approximately 1.54 fold of the estimated maximal expected allele frequency for a pathogenic variant in BAG3 causing Dilated Cardiomyopathy phenotype (3.9e-05), strongly suggesting that the variant is benign. c.554C>T has been reported in the literature in at least one individual affected with limb girdle muscular dystrophy and heart failure in presence of other pathogenic variants (Jarmula_BAG3_SciRep_2019) and in peripartum cardiomyopathy as a VUS (Goli_2021). These report(s) do not provide unequivocal conclusions about association of the variant with Dilated Cardiomyopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 33874732, 31395899). Six clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014, classifying the variant as uncertain significance (n=4) or likely benign (n=2). Based on the evidence outlined above, the variant was classified as likely benign. -

Myofibrillar myopathy 6

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.11

T;T

Eigen

Uncertain

0.26

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.84

T;T

M_CAP

Benign

0.020

MetaRNN

Benign

0.22

T;T

MetaSVM

Benign

-0.33

MutationAssessor

Uncertain

2.3

M;.

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-0.87

N;N

REVEL

Benign

0.23

Sift

Uncertain

0.0030

D;T

Sift4G

Benign

0.35

T;T

Polyphen

0.95

P;.

Vest4

0.36

MVP

0.80

MPC

0.23

ClinPred

0.15

GERP RS

6.1

Varity_R

0.076

gMVP

0.24

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

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