Genetic Variant BAG1:p.Ala270Val (chr9-33256877-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004323.6(BAG1):c.809C>T(p.Ala270Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,204 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

BAG1
NM_004323.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.59

Publications

0 publications found

Variant links:

Genes affected

BAG1 (HGNC:937): (BAG cochaperone 1) The oncogene BCL2 is a membrane protein that blocks a step in a pathway leading to apoptosis or programmed cell death. The protein encoded by this gene binds to BCL2 and is referred to as BCL2-associated athanogene. It enhances the anti-apoptotic effects of BCL2 and represents a link between growth factor receptors and anti-apoptotic mechanisms. Multiple protein isoforms are encoded by this mRNA through the use of a non-AUG (CUG) initiation codon, and three alternative downstream AUG initiation codons. A related pseudogene has been defined on chromosome X. [provided by RefSeq, Feb 2010]

BAG1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BAG1	NM_004323.6 link	c.809C>T	p.Ala270Val	missense_variant	Exon 5 of 7	ENST00000634734.3	NP_004314.6	Q99933-1
BAG1	NM_001349286.2 link	c.596C>T	p.Ala199Val	missense_variant	Exon 5 of 7		NP_001336215.1
BAG1	NM_001172415.2 link	c.464C>T	p.Ala155Val	missense_variant	Exon 5 of 7		NP_001165886.1	Q99933-4
BAG1	NM_001349299.2 link	c.395C>T	p.Ala132Val	missense_variant	Exon 5 of 7		NP_001336228.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BAG1	ENST00000634734.3 link	c.809C>T	p.Ala270Val	missense_variant	Exon 5 of 7	1	NM_004323.6	ENSP00000489189.2		Q99933-1J3QTA2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152204

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74364

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41460

American (AMR)

AF:

0.00

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 09, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.809C>T (p.A270V) alteration is located in exon 5 (coding exon 5) of the BAG1 gene. This alteration results from a C to T substitution at nucleotide position 809, causing the alanine (A) at amino acid position 270 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

-0.020

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.79

.;.;D

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.84

T;T;T

M_CAP

Benign

0.063

MetaRNN

Uncertain

0.63

D;D;D

MetaSVM

Uncertain

0.059

MutationAssessor

Uncertain

2.1

.;.;M

PhyloP100

7.6

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-2.3

.;N;.

REVEL

Uncertain

0.53

Sift

Benign

0.047

.;D;.

Sift4G

Benign

0.21

T;D;.

Polyphen

0.64

.;.;P

Vest4

0.36

MutPred

0.76

Gain of helix (P = 0.0696);.;Gain of helix (P = 0.0696);

MVP

0.84

ClinPred

0.92

GERP RS

5.3

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.6

Varity_R

0.85

gMVP

0.56

Mutation Taster

=46/54

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over