Variant 17-61683605-AT-ATT details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PVS1_Moderate

The NM_032043.3(BRIP1):c.3440_3441insA(p.Asn1147LysfsTer2) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000502 in 1,611,944 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. N1147N) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

BRIP1
NM_032043.3 frameshift

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:3

Conservation

PhyloP100: -0.808

Variant links:

Genes affected

BRIP1 (HGNC:20473): (BRCA1 interacting helicase 1) The protein encoded by this gene is a member of the RecQ DEAH helicase family and interacts with the BRCT repeats of breast cancer, type 1 (BRCA1). The bound complex is important in the normal double-strand break repair function of breast cancer, type 1 (BRCA1). This gene may be a target of germline cancer-inducing mutations. [provided by RefSeq, Jul 2008]

BRIP1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0827 CDS is truncated, and there are 3 pathogenic variants in the truncated region.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BRIP1	NM_032043.3 linkuse as main transcript	c.3440_3441insA	p.Asn1147LysfsTer2	frameshift_variant	20/20	ENST00000259008.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BRIP1	ENST00000259008.7 linkuse as main transcript	c.3440_3441insA	p.Asn1147LysfsTer2	frameshift_variant	20/20	1	NM_032043.3	P2	Q9BX63-1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152066

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000472

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000801

AC:

AN:

249660

Hom.:

AF XY:

0.0000666

AC XY:

AN XY:

135134

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.000683

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000500

AC:

AN:

1459760

Hom.:

Cov.:

AF XY:

0.0000592

AC XY:

AN XY:

726276

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000174

Gnomad4 FIN exome

AF:

0.000984

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74412

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.000472

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.0000660

Hom.:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Pathogenic:1Uncertain:1

Likely pathogenic, criteria provided, single submitter	clinical testing	Ambry Genetics	Sep 28, 2023	The c.3440dupA variant, located in coding exon 19 of the BRIP1 gene, results from a duplication of A at nucleotide position 3440, causing a translational frameshift with a predicted alternate stop codon. This alteration occurs at the 3' terminus of BRIP1 gene, is not expected to trigger nonsense-mediated mRNA decay, and only impacts the last 102 amino acids of the protein. However, premature stop codons are typically deleterious in nature and the impacted region is critical for protein function (Ambry internal data). This alteration was detected in an 8-year-old patient with acute lymphoblastic leukemia (ALL) (Douglas SPM et al. Sci Rep, 2022 Jun;12:10670). Structural and functional analysis suggest that at least two residues contained in the impacted region (Ser1237 and Lys1249) have functional importance (Olsen JV et al. Sci Signal, 2010 Jan;3:ra3; Xie J et al. PLoS Genet., 2012 Jul;8:e1002786). Based on the majority of available evidence to date, this variant is likely to be pathogenic. -
Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Dec 06, 2018	- -

Familial cancer of breast;C1836860:Fanconi anemia complementation group J

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 13, 2023

This sequence change creates a premature translational stop signal (p.Asn1147Lysfs*2) in the BRIP1 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 103 amino acid(s) of the BRIP1 protein. This variant is present in population databases (rs753683450, gnomAD 0.08%). This premature translational stop signal has been observed in individual(s) with clinical features of BRIP1-related conditions (Invitae). ClinVar contains an entry for this variant (Variation ID: 483163). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Sep 26, 2019

Frameshift variant predicted to result in protein truncation as the last 103 amino acids are lost and replaced with one incorrect amino acid, although loss-of-function variants have not been reported downstream of this position in the protein; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 29922827, 20159562, 21127055, 20068231, 22792074) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over