rs80359177
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4BP6
The NM_000059.4(BRCA2):c.9190G>A(p.Asp3064Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000428 in 1,613,906 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000059.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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BRCA2 | ENST00000380152.8 | c.9190G>A | p.Asp3064Asn | missense_variant | Exon 24 of 27 | 5 | NM_000059.4 | ENSP00000369497.3 | ||
BRCA2 | ENST00000530893.7 | c.8821G>A | p.Asp2941Asn | missense_variant | Exon 24 of 27 | 1 | ENSP00000499438.2 | |||
BRCA2 | ENST00000614259.2 | n.*1248G>A | non_coding_transcript_exon_variant | Exon 23 of 26 | 2 | ENSP00000506251.1 | ||||
BRCA2 | ENST00000614259 | n.*1248G>A | 3_prime_UTR_variant | Exon 23 of 25 | 2 | ENSP00000506251.1 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152124Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000159 AC: 4AN: 251296Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135830
GnomAD4 exome AF: 0.0000458 AC: 67AN: 1461782Hom.: 0 Cov.: 32 AF XY: 0.0000385 AC XY: 28AN XY: 727196
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152124Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74300
ClinVar
Submissions by phenotype
not provided Uncertain:2Benign:2
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This variant is associated with the following publications: (PMID: 25348012, 19043619, 25925381, 24817641, 29641532) -
The BRCA2 c.9190G>A; p.Asp3064Asn variant (rs80359177), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 52772). This variant is found on only five chromosomes (5/282678 alleles) in the Genome Aggregation Database. The aspartate at codon 3064 is weakly conserved, and computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0.311). Due to limited information, the clinical significance of the p.Asp3064Asn variant is uncertain at this time. -
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Breast-ovarian cancer, familial, susceptibility to, 2 Uncertain:2Benign:1
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Hereditary cancer-predisposing syndrome Benign:3
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This alteration is classified as likely 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. -
not specified Benign:1
Variant summary: BRCA2 c.9190G>A (p.Asp3064Asn) results in a conservative amino acid change located in the BRCA2, OB3 domain (IPR015188) of the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 1.6e-05 in 251296 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.9190G>A has been reported in the literature in patients undergoing testing without information on cancer phenotype and in the UK10K cohort of control individuals collected as part of non-cancer studies (example, Qian_2018, Pritchard_2018). These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. Furthermore, a computational method that produces a probabilistic likelihood ratio has reported this variant as having a neutral outcome (Karchin_2008). At-least one co-occurrence with another pathogenic variant has been reported at our laboratory (BRCA2 c.6408_6414delAAATGTT, p.N2137fs*29), providing supporting evidence for a benign role. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation reporting a majority consensus towards a benign/likely benign outcome (n=5). Some submitters cite overlapping evidence utilized in the context of this evaluation. Based on the evidence outlined above, the variant was re-classified as likely benign. -
Hereditary breast ovarian cancer syndrome Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at