NM_000465.4:c.159T>C

Variant names:

• chr2-214797117-A-G
• rs201708813
• NM_000465.4:c.159T>C

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Strong BP6 BP7 BS2

The NM_000465.4(BARD1):​c.159T>C​(p.Cys53Cys) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000024 in 1,459,804 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000024 (0 hom.)
• Consequence: BARD1 NM_000465.4 splice_region, synonymous
• Scores: Splicing: ADA: 0.00006075
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:8
• Conservation: PhyloP100: 0.521
• Publications: 14 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 -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 2-214797117-A-G is Benign according to our data. Variant chr2-214797117-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 186245.
• BP7: Synonymous conserved (PhyloP=0.521 with no splicing effect.
• BS2: High AC in GnomAdExome4 at 35 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.159T>C	p.Cys53Cys	splice_region synonymous	Exon 2 of 11	NP_000456.2	Q99728-1
	BARD1	NM_001282545.2		c.159T>C	p.Cys53Cys	splice_region synonymous	Exon 2 of 7	NP_001269474.1	C9IYG1
	BARD1	NM_001282549.2		c.159T>C	p.Cys53Cys	splice_region synonymous	Exon 2 of 5	NP_001269478.1	A0A087WZ19

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BARD1	ENST00000260947.9	TSL:1 MANE Select	c.159T>C	p.Cys53Cys	splice_region synonymous	Exon 2 of 11	ENSP00000260947.4	Q99728-1
	BARD1	ENST00000613706.5	TSL:1	c.159T>C	p.Cys53Cys	splice_region synonymous	Exon 2 of 11	ENSP00000484976.2	A0A087X2H0
	BARD1	ENST00000619009.5	TSL:1	c.159T>C	p.Cys53Cys	splice_region synonymous	Exon 2 of 5	ENSP00000482293.1	A0A087WZ19

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 251128 AF XY: 0.0000221

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: 0.0000441

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000240 AC: 35 AN: 1459804 Hom.: 0 Cov.: 29 AF XY: 0.0000248 AC XY: 18 AN XY: 726386

African (AFR) AF: 0.00 AC: 0 AN: 33402

American (AMR) AF: 0.0000224 AC: 1 AN: 44706

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26108

East Asian (EAS) AF: 0.00 AC: 0 AN: 39594

South Asian (SAS) AF: 0.00 AC: 0 AN: 86226

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5756

European-Non Finnish (NFE) AF: 0.0000288 AC: 32 AN: 1110312

Other (OTH) AF: 0.0000332 AC: 2 AN: 60290

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000126 Hom.: 0

Bravo AF: 0.0000151

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	3	not provided (3)
-	-	2	Familial cancer of breast (2)
-	-	2	Hereditary cancer-predisposing syndrome (2)
-	-	1	BARD1-related disorder (1)
-	1	-	Breast and/or ovarian cancer (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	3.8
DANN	Benign	0.61
PhyloP100		0.52
Mutation Taster		=76/24	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000061
dbscSNV1_RF	Benign	0.072
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: rs201708813; hg19: chr2-215661841;