rs1060501747
Variant summary
Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.
The NM_032043.3(BRIP1):c.1216G>T(p.Ala406Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000868 in 1,613,476 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A406V) has been classified as Uncertain significance.
Frequency
Consequence
NM_032043.3 missense
Scores
Clinical Significance
Conservation
Publications
- familial ovarian cancerInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- Fanconi anemiaInheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Illumina
- Fanconi anemia complementation group JInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)
- hereditary breast carcinomaInheritance: AD Classification: STRONG, LIMITED, NO_KNOWN Submitted by: ClinGen, Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
- colorectal adenomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Uncertain_significance. The variant received 0 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 152070Hom.: 0 Cov.: 32 show subpopulations
GnomAD4 exome AF: 0.00000890 AC: 13AN: 1461406Hom.: 0 Cov.: 32 AF XY: 0.00000963 AC XY: 7AN XY: 727010 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000658 AC: 1AN: 152070Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74266 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:3
The p.A406S variant (also known as c.1216G>T), located in coding exon 8 of the BRIP1 gene, results from a G to T substitution at nucleotide position 1216. The alanine at codon 406 is replaced by serine, an amino acid with similar properties. In one study, this alteration was detected in a heterozygous state in 1/13,213 breast cancer cases and 0/5,242 controls from the United Kingdom (Easton DF et al. J. Med. Genet., 2016 05;53:298-309). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
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not specified Uncertain:1
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Familial cancer of breast;C1836860:Fanconi anemia complementation group J Uncertain:1
This sequence change replaces alanine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 406 of the BRIP1 protein (p.Ala406Ser). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with breast cancer (PMID: 26921362). ClinVar contains an entry for this variant (Variation ID: 407821). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt BRIP1 protein function with a negative predictive value of 95%. 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. -
not provided Uncertain:1
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Observed in individuals with breast cancer and absent in controls (Easton et al., 2016; Dorling et al., 2021); This variant is associated with the following publications: (PMID: 33471991, 26921362) -
Familial cancer of breast Uncertain:1
The BRIP1 c.1216G>T (p.Ala406Ser) missense change is absent in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). The in silico tool REVEL predicts a benign effect on protein function, but to our knowledge this prediction has not been confirmed by functional studies. This variant has been reported in an individual with breast cancer (PMID: 26921362). To our knowledge, this variant has not been reported in individuals with Fanconi anemia. In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at