rs786203417

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000465.4(BARD1):​c.266C>A​(p.Pro89Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,102 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. P89R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 30)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

BARD1
NM_000465.4 missense

Scores

7
9
3

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.46

Publications

4 publications found
Variant links:
Genes affected
BARD1 (HGNC:952): (BRCA1 associated RING domain 1) This gene encodes a protein which interacts with the N-terminal region of BRCA1. In addition to its ability to bind BRCA1 in vivo and in vitro, it shares homology with the 2 most conserved regions of BRCA1: the N-terminal RING motif and the C-terminal BRCT domain. The RING motif is a cysteine-rich sequence found in a variety of proteins that regulate cell growth, including the products of tumor suppressor genes and dominant protooncogenes. This protein also contains 3 tandem ankyrin repeats. The BARD1/BRCA1 interaction is disrupted by tumorigenic amino acid substitutions in BRCA1, implying that the formation of a stable complex between these proteins may be an essential aspect of BRCA1 tumor suppression. This protein may be the target of oncogenic mutations in breast or ovarian cancer. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2013]
BARD1 Gene-Disease associations (from GenCC):
  • breast cancer
    Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
  • hereditary breast carcinoma
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen
  • familial ovarian cancer
    Inheritance: AD Classification: LIMITED Submitted by: ClinGen
  • hereditary nonpolyposis colon cancer
    Inheritance: AD Classification: LIMITED Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.875

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
BARD1NM_000465.4 linkc.266C>A p.Pro89Gln missense_variant Exon 3 of 11 ENST00000260947.9 NP_000456.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
BARD1ENST00000260947.9 linkc.266C>A p.Pro89Gln missense_variant Exon 3 of 11 1 NM_000465.4 ENSP00000260947.4

Frequencies

GnomAD3 genomes
Cov.:
30
GnomAD2 exomes
AF:
0.00000399
AC:
1
AN:
250924
AF XY:
0.00000737
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461102
Hom.:
0
Cov.:
32
AF XY:
0.00000138
AC XY:
1
AN XY:
726832
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33434
American (AMR)
AF:
0.00
AC:
0
AN:
44628
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26122
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39664
South Asian (SAS)
AF:
0.0000116
AC:
1
AN:
86204
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53348
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5754
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111612
Other (OTH)
AF:
0.00
AC:
0
AN:
60336
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
30

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Familial cancer of breast Uncertain:1
Jun 07, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. This variant has not been reported in the literature in individuals affected with BARD1-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.003%). This sequence change replaces proline, which is neutral and non-polar, with glutamine, which is neutral and polar, at codon 89 of the BARD1 protein (p.Pro89Gln). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.48
BayesDel_addAF
Uncertain
0.12
D
BayesDel_noAF
Uncertain
0.040
CADD
Pathogenic
26
DANN
Uncertain
0.99
DEOGEN2
Benign
0.40
T;.;.;.
Eigen
Pathogenic
0.69
Eigen_PC
Pathogenic
0.69
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Uncertain
0.91
D;D;D;D
M_CAP
Uncertain
0.22
D
MetaRNN
Pathogenic
0.87
D;D;D;D
MetaSVM
Uncertain
0.20
D
MutationAssessor
Benign
1.9
L;.;.;L
PhyloP100
6.5
PrimateAI
Uncertain
0.61
T
PROVEAN
Pathogenic
-5.5
D;.;.;.
REVEL
Pathogenic
0.70
Sift
Pathogenic
0.0
D;.;.;.
Sift4G
Pathogenic
0.0
D;T;D;D
Polyphen
1.0
D;.;.;.
Vest4
0.77
MutPred
0.75
Gain of catalytic residue at P89 (P = 0.0064);Gain of catalytic residue at P89 (P = 0.0064);.;Gain of catalytic residue at P89 (P = 0.0064);
MVP
0.94
MPC
0.42
ClinPred
1.0
D
GERP RS
5.1
Varity_R
0.87
gMVP
0.57
Mutation Taster
=66/34
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs780241203; hg19: chr2-215657119; COSMIC: COSV53617906; API