17-43094464-T-C
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The NM_007294.4(BRCA1):c.1067A>G(p.Gln356Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0551 in 1,614,048 control chromosomes in the GnomAD database, including 2,838 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).
Frequency
Consequence
NM_007294.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -20 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0456 AC: 6942AN: 152212Hom.: 212 Cov.: 32
GnomAD3 exomes AF: 0.0465 AC: 11681AN: 251138Hom.: 398 AF XY: 0.0471 AC XY: 6396AN XY: 135736
GnomAD4 exome AF: 0.0560 AC: 81929AN: 1461718Hom.: 2625 Cov.: 34 AF XY: 0.0554 AC XY: 40297AN XY: 727152
GnomAD4 genome AF: 0.0456 AC: 6943AN: 152330Hom.: 213 Cov.: 32 AF XY: 0.0453 AC XY: 3371AN XY: 74492
ClinVar
Submissions by phenotype
not specified Benign:14Other:1
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The p.Gln356Arg variant is not expected to have clinical significance because it is identified at a high frequency in various different populations of origin. In the 1000 genomes and exome variant server databases it was identified in 658 of 22636 control chromosomes. In addition, this variant was identified in the UMD database 16 x and 3 times in the presence of a co-occuring pathogenic variant increasing the likelihood this variant does not have clinical significance. In summary, based on the above information, this variant is classified as benign. -
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
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p.Gln356Arg in exon 10 of BRCA1: This variant is not expected to have clinical s ignificance because it has been identified in 7.83% (518/6614) of Finnish chromo somes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs1799950). -
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Breast-ovarian cancer, familial, susceptibility to, 1 Uncertain:1Benign:11
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IARC class based on posterior probability from multifactorial likelihood analysis, thresholds for class as per Plon et al. 2008 (PMID: 18951446). Class 1 based on posterior probability = 0.00000000000204. Also class 1 based on frequency >1% in an outbred sampleset. Frequency 0.05409 (European), derived from 1000 genomes (2012-04-30). -
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
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High frequency in a 1kG or ESP population: 6.4 %. -
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Hereditary cancer-predisposing syndrome Benign:5
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This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Hereditary breast ovarian cancer syndrome Benign:5
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not provided Benign:4
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Breast ductal adenocarcinoma Uncertain:1
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Familial cancer of breast;C2676676:Breast-ovarian cancer, familial, susceptibility to, 1;C3280442:Pancreatic cancer, susceptibility to, 4;C4554406:Fanconi anemia, complementation group S Benign:1
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Malignant tumor of breast Benign:1
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Familial cancer of breast Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at