rs1555280354
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4
The NM_000059.4(BRCA2):c.142G>A(p.Glu48Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,714 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )
Consequence
BRCA2
NM_000059.4 missense
NM_000059.4 missense
Scores
1
7
8
Clinical Significance
Conservation
PhyloP100: 6.37
Genes affected
BRCA2 (HGNC:1101): (BRCA2 DNA repair associated) Inherited mutations in BRCA1 and this gene, BRCA2, confer increased lifetime risk of developing breast or ovarian cancer. Both BRCA1 and BRCA2 are involved in maintenance of genome stability, specifically the homologous recombination pathway for double-strand DNA repair. The largest exon in both genes is exon 11, which harbors the most important and frequent mutations in breast cancer patients. The BRCA2 gene was found on chromosome 13q12.3 in human. The BRCA2 protein contains several copies of a 70 aa motif called the BRC motif, and these motifs mediate binding to the RAD51 recombinase which functions in DNA repair. BRCA2 is considered a tumor suppressor gene, as tumors with BRCA2 mutations generally exhibit loss of heterozygosity (LOH) of the wild-type allele. [provided by RefSeq, May 2020]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.39312494).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
BRCA2 | NM_000059.4 | c.142G>A | p.Glu48Lys | missense_variant | 3/27 | ENST00000380152.8 | NP_000050.3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
BRCA2 | ENST00000380152.8 | c.142G>A | p.Glu48Lys | missense_variant | 3/27 | 5 | NM_000059.4 | ENSP00000369497.3 | ||
BRCA2 | ENST00000530893 | c.-228G>A | 5_prime_UTR_variant | 3/27 | 1 | ENSP00000499438.2 | ||||
BRCA2 | ENST00000614259.2 | n.142G>A | non_coding_transcript_exon_variant | 2/26 | 2 | ENSP00000506251.1 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 genomes
Cov.:
33
GnomAD4 exome AF: 6.84e-7 AC: 1AN: 1461714Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 727172
GnomAD4 exome
AF:
AC:
1
AN:
1461714
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Cov.:
32
AF XY:
AC XY:
0
AN XY:
727172
Gnomad4 AFR exome
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GnomAD4 genome Cov.: 33
GnomAD4 genome
Cov.:
33
ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:3Benign:1
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 12, 2023 | 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Jan 05, 2019 | - - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | May 28, 2019 | Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 27825131) - |
Familial cancer of breast Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Jan 12, 2024 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Pathogenic
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
M_CAP
Uncertain
D
MetaRNN
Benign
T;T
MetaSVM
Benign
T
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N
REVEL
Benign
Sift
Uncertain
D;D
Sift4G
Uncertain
D;D
Vest4
MutPred
Gain of ubiquitination at E48 (P = 0.001);Gain of ubiquitination at E48 (P = 0.001);
MVP
MPC
0.055
ClinPred
D
GERP RS
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at