ClinVar Miner

Submissions for variant NM_007294.3(BRCA1):c.3454G>A (p.Asp1152Asn) (rs80357175)

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Total submissions: 13
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000048203 SCV000076216 uncertain significance Hereditary breast and ovarian cancer syndrome 2018-03-14 criteria provided, single submitter clinical testing This sequence change replaces aspartic acid with asparagine at codon 1152 of the BRCA1 protein (p.Asp1152Asn). The aspartic acid residue is moderately conserved and there is a small physicochemical difference between aspartic acid and asparagine. This variant is present in population databases (rs80357175, ExAC 0.003%). This variant has been reported in individuals affected with breast cancer (PMID: 21232165, 20104584, 26689913). ClinVar contains an entry for this variant (Variation ID: 54890). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: (SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). The asparagine amino acid residue is also found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Ambry Genetics RCV000129496 SCV000184268 uncertain significance Hereditary cancer-predisposing syndrome 2018-02-28 criteria provided, single submitter clinical testing Lines of evidence used in support of classification: Insufficient evidence
GeneDx RCV000589160 SCV000210147 uncertain significance not provided 2017-09-29 criteria provided, single submitter clinical testing This variant is denoted BRCA1 c.3454G>A at the cDNA level, p.Asp1152Asn (D1152N) at the protein level, and results in the change of an Aspartic Acid to an Asparagine (GAC>AAC). Using alternate nomenclature, this variant would be defined as BRCA1 3573G>A. This variant has been identified in individuals with a personal and/or family history of breast and/or ovarian cancer, as well as in a pediatric patient with leukemia (Hansen 2009, Borg 2010, Stegel 2011, Kluska 2015, Zhang 2015, Dos Santos Vidal 2016). An in vitro-based homology-directed repair (HDR) assay showed this variant to exhibit HDR activity comparable to wildtype (Lu 2015). BRCA1 Asp1152Asn was not observed at a significant allele frequency in large population cohorts (Lek 2016). Since Aspartic Acid and Asparagine differ in some properties, this is considered a semi-conservative amino acid substitution. BRCA1 Asp1152Asn occurs at a position that is not conserved and is not located in a known functional domain. In silico analyses predict that this variant is probably damaging to protein structure and function. Based on currently available evidence, it is unclear whether BRCA1 Asp1152Asn is a pathogenic or benign variant. We consider it to be a variant of uncertain significance.
Department of Pathology and Molecular Medicine,Queen's University RCV000212174 SCV000588045 uncertain significance not specified 2017-04-20 criteria provided, single submitter clinical testing
Department of Pathology and Laboratory Medicine,Sinai Health System RCV000212174 SCV000591448 uncertain significance not specified 2016-02-10 criteria provided, single submitter clinical testing
Genetic Services Laboratory, University of Chicago RCV000212174 SCV000593681 uncertain significance not specified 2016-09-29 criteria provided, single submitter clinical testing
Quest Diagnostics Nichols Institute San Juan Capistrano RCV000212174 SCV000600334 uncertain significance not specified 2017-01-21 criteria provided, single submitter clinical testing
Integrated Genetics/Laboratory Corporation of America RCV000589160 SCV000699034 likely benign not provided 2017-07-28 criteria provided, single submitter clinical testing Variant summary: The BRCA1 c.3454G>A (p.Asp1152Asn) variant involves the alteration of a conserved nucleotide. 4/4 in silico tools predict a benign outcome for this variant (SNPsandGO not captured due to low reliability index) (BP4). This variant was found in 2/121394 control chromosomes at a frequency of 0.0000165, which does not exceed the estimated maximal expected allele frequency of a pathogenic BRCA1 variant (0.0010005). This variant has been reported in multiple affected individuals without strong evidence for causality. The HDR assay showed the variant with relative HDR activity of 1.7306 (WT=1; Lu_2015) (ACMG criteria BS3). One individual reported in UMD also carried a likely pathogenic variant in BRCA1 c.4485_4675del/p.Ser1496GlyfsX14, further supporting benign nature of this variant (ACMG criteria BP2). Multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance, and one classified it as benign, all without evidence for independent evaluation. Taken together, and considering the ACMG guidelines, this variant is classified as likely benign until more evidence becomes available.
PreventionGenetics,PreventionGenetics RCV000589160 SCV000806934 uncertain significance not provided 2017-08-18 criteria provided, single submitter clinical testing
Color RCV000129496 SCV000902880 likely benign Hereditary cancer-predisposing syndrome 2015-04-28 criteria provided, single submitter clinical testing
Breast Cancer Information Core (BIC) (BRCA1) RCV000112100 SCV000144768 uncertain significance Breast-ovarian cancer, familial 1 2004-02-20 no assertion criteria provided clinical testing
Sharing Clinical Reports Project (SCRP) RCV000112100 SCV000297600 benign Breast-ovarian cancer, familial 1 2010-01-14 no assertion criteria provided clinical testing
MVZ Praenatalmedizin und Genetik Nuernberg RCV000112100 SCV000777893 uncertain significance Breast-ovarian cancer, familial 1 2018-05-01 no assertion criteria provided clinical testing This rare variant (gnomAD) was found multiple times in databases and literature with uncertain significance. In silico analyses show contradictory results. Therefore we rate this variant as Variant of unknown significance (VUS). Interestingly we found this variant in a patient who harbored also a pathogenic BRCA2-variant (NM_000059.3|c.5238dupT|het)

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