rs727505109
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_004281.4(BAG3):c.1067del(p.Pro356HisfsTer7) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Genomes: not found (cov: 31)
Consequence
BAG3
NM_004281.4 frameshift
NM_004281.4 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 1.70
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]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
?
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 23 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 10-119676616-GC-G is Pathogenic according to our data. Variant chr10-119676616-GC-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 179764.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BAG3 | NM_004281.4 | c.1067del | p.Pro356HisfsTer7 | frameshift_variant | 4/4 | ENST00000369085.8 | |
BAG3 | XM_005270287.2 | c.1064del | p.Pro355HisfsTer7 | frameshift_variant | 4/4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BAG3 | ENST00000369085.8 | c.1067del | p.Pro356HisfsTer7 | frameshift_variant | 4/4 | 1 | NM_004281.4 | P1 | |
BAG3 | ENST00000450186.1 | c.890del | p.Pro297HisfsTer7 | frameshift_variant | 5/5 | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD3 genomes
?
Cov.:
31
GnomAD4 exome Cov.: 77
GnomAD4 exome
Cov.:
77
GnomAD4 genome ? Cov.: 31
GnomAD4 genome
?
Cov.:
31
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Myofibrillar myopathy 6;C3151293:Dilated cardiomyopathy 1HH Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Nov 11, 2022 | For these reasons, this variant has been classified as Pathogenic. This variant disrupts a region of the BAG3 protein in which other variant(s) (p.Lys449*) have been determined to be pathogenic (Invitae). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. ClinVar contains an entry for this variant (Variation ID: 179764). This variant has not been reported in the literature in individuals affected with BAG3-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Pro356Hisfs*7) in the BAG3 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 220 amino acid(s) of the BAG3 protein. - |
Primary dilated cardiomyopathy Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Apr 15, 2016 | The p.Pro356fs variant in BAG3 has been identified by our laboratory in 1 Caucas ian individual with DCM. It was absent from large population studies. This varia nt is predicted to cause a frameshift, which alters the protein?s amino acid seq uence beginning at position 356 and leads to a premature termination codon 7 ami no acids downstream. This alteration is then predicted to lead to a truncated or absent protein. Loss of functions variants in BAG3 have been reported to be dis ease-causing (Norton 2011, Villard, 2011). In summary, although additional studi es are required to fully establish its clinical significance, the p.Pro356fs var iant is likely pathogenic. - |
Computational scores
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Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at