rs76744638

Variant names:

• chr2-214728819-G-A
• rs76744638
• NM_000465.4:c.2191C>T

Your query was ambiguous. Multiple possible variants found:

• chr2-214728819-G-A
• chr2-214728819-G-C

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_Moderate BS1_Supporting BS2

The NM_000465.4(BARD1):​c.2191C>T​(p.Arg731Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000316 in 1,614,216 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 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. R731H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000085 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000026 (0 hom.)
• Consequence: BARD1 NM_000465.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:8 B:2
• Conservation: PhyloP100: 1.92
• Publications: 17 publications found

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

ACMG classification

Our verdict: Benign. The variant received -7 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.10717189).
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000853 (13/152330) while in subpopulation EAS AF = 0.00116 (6/5182). AF 95% confidence interval is 0.000503. There are 0 homozygotes in GnomAd4. There are 9 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 13 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BARD1	NM_000465.4	MANE Select	c.2191C>T	p.Arg731Cys	missense	Exon 11 of 11	NP_000456.2	Q99728-1
	BARD1	NM_001282543.2		c.2134C>T	p.Arg712Cys	missense	Exon 10 of 10	NP_001269472.1	Q99728-2
	BARD1	NM_001282545.2		c.838C>T	p.Arg280Cys	missense	Exon 7 of 7	NP_001269474.1	C9IYG1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BARD1	ENST00000260947.9	TSL:1 MANE Select	c.2191C>T	p.Arg731Cys	missense	Exon 11 of 11	ENSP00000260947.4	Q99728-1
	BARD1	ENST00000617164.5	TSL:1	c.2134C>T	p.Arg712Cys	missense	Exon 10 of 10	ENSP00000480470.1	Q99728-2
	BARD1	ENST00000613706.5	TSL:1	c.1783C>T	p.Arg595Cys	missense	Exon 11 of 11	ENSP00000484976.2	A0A087X2H0

Frequencies

GnomAD3 genomes AF: 0.0000854 AC: 13 AN: 152212 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00116

Gnomad SAS AF: 0.000828

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.0000438 AC: 11 AN: 251324 AF XY: 0.0000368

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000272

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000260 AC: 38 AN: 1461886 Hom.: 0 Cov.: 32 AF XY: 0.0000330 AC XY: 24 AN XY: 727242

African (AFR) AF: 0.0000299 AC: 1 AN: 33476

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.000202 AC: 8 AN: 39700

South Asian (SAS) AF: 0.000220 AC: 19 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1112012

Other (OTH) AF: 0.0000993 AC: 6 AN: 60396

GnomAD4 genome AF: 0.0000853 AC: 13 AN: 152330 Hom.: 0 Cov.: 32 AF XY: 0.000121 AC XY: 9 AN XY: 74488

African (AFR) AF: 0.00 AC: 0 AN: 41574

American (AMR) AF: 0.00 AC: 0 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00116 AC: 6 AN: 5182

South Asian (SAS) AF: 0.000829 AC: 4 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68036

Other (OTH) AF: 0.000473 AC: 1 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	4	-	Familial cancer of breast (4)
-	2	1	Hereditary cancer-predisposing syndrome (3)
-	1	1	not provided (2)
-	1	-	BARD1-related cancer predisposition (1)
1	-	-	Ovarian cancer (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.13
CADD	Pathogenic	30
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.29	T
Eigen	Uncertain	0.62
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.038	D
MetaRNN	Benign	0.11	T
MetaSVM	Uncertain	-0.043	T
MutationAssessor	Benign	1.9	L
PhyloP100		1.9
PrimateAI	Benign	0.36	T
PROVEAN	Uncertain	-3.3	D
REVEL	Benign	0.17
Sift	Benign	0.038	D
Sift4G	Uncertain	0.020	D
Polyphen		1.0	D
Vest4		0.18
MutPred		0.38		Loss of disorder (P = 0.0501)
MVP		0.88
MPC		0.11
ClinPred		0.41	T
GERP RS		5.8
Varity_R		0.30
gMVP		0.56
Mutation Taster		=61/39	polymorphism

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

Other links and lift over

dbSNP: rs76744638; hg19: chr2-215593543; COSMIC: COSV53611891; COSMIC: COSV53611891;