rs1060502405
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PM4_Supporting
The NM_000059.4(BRCA2):c.1389_1391delAGT(p.Val464del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_000059.4 disruptive_inframe_deletion
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Uncertain_significance. Variant got 3 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
BRCA2 | ENST00000380152.8 | c.1389_1391delAGT | p.Val464del | disruptive_inframe_deletion | Exon 10 of 27 | 5 | NM_000059.4 | ENSP00000369497.3 | ||
BRCA2 | ENST00000530893.7 | c.1020_1022delAGT | p.Val341del | disruptive_inframe_deletion | Exon 10 of 27 | 1 | ENSP00000499438.2 | |||
BRCA2 | ENST00000614259.2 | n.1389_1391delAGT | non_coding_transcript_exon_variant | Exon 9 of 26 | 2 | ENSP00000506251.1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2
This variant causes an in-frame deletion of 1 amino acid, valine 465, in the BRCA2 protein. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with benign breast disease (PMID: 14973102). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
The c.1389_1391delAGT variant (also known as p.V465del) is located in coding exon 9 of the BRCA2 gene. This variant results from an in-frame AGT deletion at nucleotide positions 1389 to 1391. This results in the in-frame deletion of a valine at codon 465. This alteration has been reported in 1/342 Chinese probands with benign breast disease and 0/319 controls (Suter NM et al. Cancer Epidemiol. Biomarkers Prev., 2004 Feb;13:181-9). This amino acid position is not well conserved in available vertebrate species. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Hereditary breast ovarian cancer syndrome Uncertain:1
In summary, this variant is a rare in-frame deletion with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. This sequence change deletes 3 nucleotides from exon 10 of the BRCA2 mRNA (c.1389_1391delAGT). This leads to the deletion of 1 amino acid residue in the BRCA2 protein (p.Val465del) but otherwise preserves the integrity of the reading frame. This variant is not present in population databases (ExAC no frequency). This variant has been reported in the literature in an individual with benign breast disease (PMID: 14973102). ClinVar contains an entry for this variant (Variation ID: 409457). Experimental studies and prediction algorithms are not available for this variant, and the functional significance of the deleted amino acid is currently unknown. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at