Genetic Variant NM_000465.4:c.668A>G (chr2-214781206-T-C) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_000465.4(BARD1):c.668A>G(p.Glu223Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000191 in 1,591,834 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict 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. E223D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00025 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 0 hom. )

Consequence

BARD1
NM_000465.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:14B:6

Conservation

PhyloP100: 0.190

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):

BARD1-related cancer predisposition
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
breast cancer
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
hereditary breast carcinoma
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
familial ovarian cancer
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

BARD1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.04667273).

BP6

Variant 2-214781206-T-C is Benign according to our data. Variant chr2-214781206-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 127743.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000249 (38/152324) while in subpopulation NFE AF = 0.000485 (33/68030). AF 95% confidence interval is 0.000354. There are 0 homozygotes in GnomAd4. There are 10 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 38 AD gene.

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	UniProt
BARD1	NM_000465.4	MANE Select	c.668A>G	p.Glu223Gly	missense	Exon 4 of 11	NP_000456.2	Q99728-1
BARD1	NM_001282543.2		c.611A>G	p.Glu204Gly	missense	Exon 3 of 10	NP_001269472.1	Q99728-2
BARD1	NM_001282545.2		c.215+15855A>G		intron	N/A	NP_001269474.1	C9IYG1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BARD1	ENST00000260947.9	TSL:1 MANE Select	c.668A>G	p.Glu223Gly	missense	Exon 4 of 11	ENSP00000260947.4	Q99728-1
BARD1	ENST00000617164.5	TSL:1	c.611A>G	p.Glu204Gly	missense	Exon 3 of 10	ENSP00000480470.1	Q99728-2
BARD1	ENST00000613706.5	TSL:1	c.668A>G	p.Glu223Gly	missense	Exon 4 of 11	ENSP00000484976.2	A0A087X2H0

Frequencies

GnomAD3 genomes

AF:

0.000250

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.000485

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000161

AC:

AN:

229148

AF XY:

0.000169

show subpopulations

Gnomad AFR exome

AF:

0.0000640

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000951

Gnomad NFE exome

AF:

0.000317

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000185

AC:

266

AN:

1439510

Hom.:

Cov.:

AF XY:

0.000171

AC XY:

122

AN XY:

715320

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31746

American (AMR)

AF:

0.00

AC:

AN:

38218

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24930

East Asian (EAS)

AF:

0.00

AC:

AN:

39606

South Asian (SAS)

AF:

0.00

AC:

AN:

80552

European-Finnish (FIN)

AF:

0.000151

AC:

AN:

52968

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5628

European-Non Finnish (NFE)

AF:

0.000227

AC:

251

AN:

1106526

Other (OTH)

AF:

0.000118

AC:

AN:

59336

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

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:

0.000249

AC:

AN:

152324

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.0000962

AC:

AN:

41580

American (AMR)

AF:

0.0000654

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000485

AC:

AN:

68030

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

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:

0.000252

Hom.:

Bravo

AF:

0.000227

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000582

AC:

ExAC

AF:

0.000140

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Familial cancer of breast (7)

Hereditary cancer-predisposing syndrome (3)

not provided (3)

not specified (3)

BARD1-related cancer predisposition (1)

BARD1-related disorder (1)

Breast and/or ovarian cancer (1)

Malignant tumor of breast (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Benign

0.92

DEOGEN2

Benign

0.14

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.10

LIST_S2

Benign

0.51

M_CAP

Benign

0.014

MetaRNN

Benign

0.047

MetaSVM

Benign

-0.91

MutationAssessor

Benign

1.3

PhyloP100

0.19

PrimateAI

Benign

0.27

PROVEAN

Benign

-2.2

REVEL

Benign

0.085

Sift

Benign

0.16

Sift4G

Benign

0.17

Polyphen

0.0

Vest4

0.099

MVP

0.70

MPC

0.088

ClinPred

0.025

GERP RS

0.64

Varity_R

0.064

gMVP

0.20

Mutation Taster

=92/8

polymorphism

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over