NM_000465.4:c.1212C>G
Variant summary
Our verdict is Pathogenic. The variant received 12 ACMG points: 16P and 4B. PVS1PP5_Very_StrongBS2
The NM_000465.4(BARD1):c.1212C>G(p.Tyr404*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,613,998 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. Y404Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_000465.4 stop_gained
Scores
Clinical Significance
Conservation
Publications
- breast cancerInheritance: AD Classification: DEFINITIVE Submitted by: G2P
- hereditary breast carcinomaInheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen
- familial ovarian cancerInheritance: AD Classification: LIMITED Submitted by: ClinGen
- hereditary nonpolyposis colon cancerInheritance: AD Classification: LIMITED Submitted by: ClinGen
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ACMG classification
Our verdict: Pathogenic. The variant received 12 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes  0.0000197  AC: 3AN: 152210Hom.:  0  Cov.: 33 show subpopulations 
GnomAD2 exomes  AF:  0.00000398  AC: 1AN: 250984 AF XY:  0.00000737   show subpopulations 
GnomAD4 exome  AF:  0.0000116  AC: 17AN: 1461788Hom.:  0  Cov.: 31 AF XY:  0.0000151  AC XY: 11AN XY: 727178 show subpopulations 
Age Distribution
GnomAD4 genome  0.0000197  AC: 3AN: 152210Hom.:  0  Cov.: 33 AF XY:  0.0000269  AC XY: 2AN XY: 74354 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
Familial cancer of breast    Pathogenic:7 
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This sequence change creates a premature translational stop signal (p.Tyr404*) in the BARD1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in BARD1 are known to be pathogenic (PMID: 20077502, 21344236). This variant is present in population databases (rs587782681, gnomAD 0.004%). This premature translational stop signal has been observed in individual(s) with a family history of ovarian cancer (PMID: 26315354). ClinVar contains an entry for this variant (Variation ID: 142734). RNA analysis performed to evaluate the impact of this premature translational stop signal on mRNA splicing indicates it does not significantly alter splicing (internal data). For these reasons, this variant has been classified as Pathogenic. -
This variant is considered pathogenic. This variant creates a termination codon and is predicted to result in premature protein truncation. -
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The BARD1 c.1212C>G (p.Tyr404Ter) change is a nonsense variant that is predicted to cause premature protein truncation or absence of protein due to nonsense-mediated decay. This variant has been reported in an individual with breast cancer (PMID: 36315097). This variant has a maximum founder subpopulation frequency of 0.004% and a maximum non-founder subpopulation frequency of 0.002% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org). In summary, this variant meets criteria to be classified as pathogenic. -
Hereditary cancer-predisposing syndrome    Pathogenic:3 
This variant changes 1 nucleotide in exon 4 of the BARD1 gene, creating a premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. This variant has been reported in individuals affected with ovarian cancer (PMID: 30322717, 31341520) and breast cancer (PMID: 36315097). This variant has been identified in 3/282382 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Loss of BARD1 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. -
PVS1+PM2 -
The p.Y404* pathogenic mutation (also known as c.1212C>G), located in coding exon 4 of the BARD1 gene, results from a C to G substitution at nucleotide position 1212. This changes the amino acid from a tyrosine to a stop codon within coding exon 4. This pathogenic mutation has been reported in multiple individuals diagnosed with ovarian cancer (Ramus SJ et al. J. Natl. Cancer Inst. 2015 Nov;107; Carter NJ et al. Gynecol Oncol, 2018 12;151:481-488). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. -
not provided    Pathogenic:2 
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Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Observed in individuals with breast or ovarian cancer (PMID: 26315354, 31341520, 36315097, 28888541); Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 26315354, 31341520, 32832836, 30322717, 29790872, 31589614, 29700634, 28888541, 33804961, 36315097, 21344236, 20077502, 34887416) -
BARD1-related cancer predisposition    Pathogenic:1 
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BARD1-related disorder    Pathogenic:1 
The BARD1 c.1212C>G variant is predicted to result in premature protein termination (p.Tyr404*). This variant has been reported in at least five individuals (including one sibling pair) with a personal and/or family history of breast and ovarian cancer (Ramus et al. 2015. PubMed ID: 26315354; Lilyquist et al. 2017. PubMed ID: 28888541; Kaur et al. 2018. PubMed ID: 29700634; Carter et al. 2018. PubMed ID: 30322717). This variant has also been reported in an individual with prostate cancer (Matejcic et al. 2020. PubMed ID: 32832836). This variant is reported in 0.0040% of alleles in individuals of European (Finnish) descent in gnomAD. It is interpreted as pathogenic in ClinVar (https://preview.ncbi.nlm.nih.gov/clinvar/variation/142734/). Nonsense variants in BARD1 are expected to be pathogenic. This variant is interpreted as pathogenic. -
Hereditary breast ovarian cancer syndrome    Pathogenic:1 
Variant summary: BARD1 c.1212C>G (p.Tyr404X) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant allele was found at a frequency of 4e-06 in 250984 control chromosomes (gnomAD). c.1212C>G has been reported in the literature in individuals with personal and/or family history of breast or ovarian cancer (e.g. Carter_2018, Kaur_2018, Ramus_2015). These data indicate that the variant is likely associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Seven ClinVar submitters (evaluation after 2014) cite the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -
Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at