rs200050729
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP6
The NM_032043.3(BRIP1):c.380-17T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000287 in 1,602,000 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
Consequence
NM_032043.3 intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000356 AC: 54AN: 151862Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.000406 AC: 98AN: 241600Hom.: 0 AF XY: 0.000359 AC XY: 47AN XY: 130780
GnomAD4 exome AF: 0.000279 AC: 405AN: 1450020Hom.: 0 Cov.: 30 AF XY: 0.000270 AC XY: 195AN XY: 721316
GnomAD4 genome AF: 0.000355 AC: 54AN: 151980Hom.: 0 Cov.: 32 AF XY: 0.000363 AC XY: 27AN XY: 74338
ClinVar
Submissions by phenotype
not provided Benign:5
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Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
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PVS1_Supporting (RNA) BRIP1 c.380-17T>A is an intronic variant located close to a canonical splice site. This variant is found in 103/258690 alleles at a frequency of 0.039% in the gnomAD v2.1.1 database, non-cancer dataset. The SpliceAI algorithm predicts that the variant impairs the splicing acceptor site of exon 5 (delta score = 0.24). An internal RNA assay with primers annealing exons 3 and 6 in cultured lymphocytes from a carrier patient in the presence of NMD-inhibition was performed. It showed that this variant abolishes the natural donor splice site of exon 5, causing the skipping of this exon (r.380_507del), which is predicted to lead to a truncated protein triggering NMD (p.Ser128*). This transcript was also detected in controls, although at a lower proportion compared to the patient sample. Quantification of transcript proportions using a tag-SNP could not be performed (PVS1_Supporting (RNA), unpublished data). It has been reported in the ClinVar database (1x Uncertain Significance; 9x Likely benign; 1x Benign) and in the LOVD database (4 likely benign) with conflicting interpretations of pathogenicity. Based on currently available information, the variant c.380-17T>A should be considered an uncertain significance variant. -
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not specified Benign:2
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
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Breast and/or ovarian cancer Benign:1
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Familial cancer of breast;C1836860:Fanconi anemia complementation group J Benign:1
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Familial cancer of breast Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at