dbSNP rs786203874: BARD1:p.Arg529Gln (chr2-214752538-C-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 3P and 6B. PM1PP3BP6BS1BS2_Supporting

The NM_000465.4(BARD1):c.1586G>A(p.Arg529Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000335 in 1,613,180 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R529W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

BARD1
NM_000465.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 3.48

Publications

9 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

BARD1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 42 uncertain in NM_000465.4

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

BP6

Variant 2-214752538-C-T is Benign according to our data. Variant chr2-214752538-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 187625.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000592 (9/152022) while in subpopulation EAS AF = 0.00154 (8/5198). AF 95% confidence interval is 0.000766. There are 0 homozygotes in GnomAd4. There are 7 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 9 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000465.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BARD1	NM_000465.4	MANE Select	c.1586G>A	p.Arg529Gln	missense	Exon 7 of 11	NP_000456.2
BARD1	NM_001282543.2		c.1529G>A	p.Arg510Gln	missense	Exon 6 of 10	NP_001269472.1
BARD1	NM_001282545.2		c.233G>A	p.Arg78Gln	missense	Exon 3 of 7	NP_001269474.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BARD1	ENST00000260947.9	TSL:1 MANE Select	c.1586G>A	p.Arg529Gln	missense	Exon 7 of 11	ENSP00000260947.4
BARD1	ENST00000617164.5	TSL:1	c.1529G>A	p.Arg510Gln	missense	Exon 6 of 10	ENSP00000480470.1
BARD1	ENST00000613706.5	TSL:1	c.1178G>A	p.Arg393Gln	missense	Exon 7 of 11	ENSP00000484976.2

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152022

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00154

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000139

AC:

AN:

251276

AF XY:

0.000125

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00169

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000308

AC:

AN:

1461158

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

726920

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33442

American (AMR)

AF:

0.0000671

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26116

East Asian (EAS)

AF:

0.000656

AC:

AN:

39636

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53396

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.0000108

AC:

AN:

1111500

Other (OTH)

AF:

0.0000166

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.449

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000592

AC:

AN:

152022

Hom.:

Cov.:

AF XY:

0.0000943

AC XY:

AN XY:

74254

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41392

American (AMR)

AF:

0.00

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00154

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10572

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67998

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.547

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000166

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.000173

AC:

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Familial cancer of breast (3)

Hereditary cancer-predisposing syndrome (3)

not provided (3)

BARD1-related cancer predisposition (1)

Familial pancreatic carcinoma (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Uncertain

0.060

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.14

Eigen

Benign

0.16

Eigen_PC

Benign

0.19

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.078

MetaRNN

Benign

0.083

MetaSVM

Uncertain

-0.18

MutationAssessor

Benign

1.9

PhyloP100

3.5

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.9

REVEL

Uncertain

0.48

Sift

Benign

0.20

Sift4G

Benign

0.28

Polyphen

1.0

Vest4

0.83

MutPred

0.84

Loss of helix (P = 0.1299)

MVP

0.96

MPC

0.13

ClinPred

0.10

GERP RS

4.6

Varity_R

0.38

gMVP

0.67

Mutation Taster

=80/20

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.70

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.70

Position offset: -2

DS_AL_spliceai

0.35

Position offset: 17

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over