2-214728552-TGA-T

Variant names:

• chr2-214728552-TGA-T
• rs1310441861
• ENST00000617164.5:c.*122_*123delTC

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP6_Moderate

The NM_000465.4(BARD1):​c.*122_*123delTC variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000401 in 760,112 control chromosomes in the GnomAD database, including 1 homozygotes. There is a variant allele frequency bias in the population database for this variant (GnomAdExome4), which may indicate mosaicism or somatic mutations in the reference population data. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.00075 (0 hom., cov: 18)
  • Exomes 𝑓: 0.00040 (1 hom.)
  • Failed GnomAD Quality Control
• Consequence: BARD1 NM_000465.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.114
• Publications: 0 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):

• 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

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP6: Variant 2-214728552-TGA-T is Benign according to our data. Variant chr2-214728552-TGA-T is described in ClinVar as [Benign]. Clinvar id is 801876.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BARD1	NM_000465.4	c.*122_*123delTC		3_prime_UTR_variant	Exon 11 of 11	ENST00000260947.9	NP_000456.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BARD1	ENST00000260947.9	c.*122_*123delTC		3_prime_UTR_variant	Exon 11 of 11	1	NM_000465.4	ENSP00000260947.4

Frequencies

GnomAD3 genomes AF: 0.000751 AC: 113 AN: 150372 Hom.: 0 Cov.: 18

Gnomad AFR AF: 0.000271

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000661

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00436

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000829

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000401 AC: 305 AN: 760112 Hom.: 1 AF XY: 0.000431 AC XY: 167 AN XY: 387156

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00124 AC: 22 AN: 17794

American (AMR) AF: 0.000768 AC: 15 AN: 19538

Ashkenazi Jewish (ASJ) AF: 0.000413 AC: 7 AN: 16964

East Asian (EAS) AF: 0.000310 AC: 10 AN: 32236

South Asian (SAS) AF: 0.00112 AC: 57 AN: 50902

European-Finnish (FIN) AF: 0.000325 AC: 10 AN: 30772

Middle Eastern (MID) AF: 0.00121 AC: 5 AN: 4134

European-Non Finnish (NFE) AF: 0.000306 AC: 169 AN: 551418

Other (OTH) AF: 0.000275 AC: 10 AN: 36354

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.000751 AC: 113 AN: 150486 Hom.: 0 Cov.: 18 AF XY: 0.000626 AC XY: 46 AN XY: 73528

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.000270 AC: 11 AN: 40768

American (AMR) AF: 0.0000660 AC: 1 AN: 15148

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3464

East Asian (EAS) AF: 0.00 AC: 0 AN: 5154

South Asian (SAS) AF: 0.00 AC: 0 AN: 4780

European-Finnish (FIN) AF: 0.00436 AC: 45 AN: 10310

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

European-Non Finnish (NFE) AF: 0.000829 AC: 56 AN: 67574

Other (OTH) AF: 0.00 AC: 0 AN: 2090

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.0345 Hom.: 0

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Familial cancer of breast Benign:1

May 28, 2019

Mendelics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.11
Mutation Taster		=97/3	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: rs1310441861; hg19: chr2-215593276;