rs878855140

Positions:

• chr17-61780936-G-GGTTGTTGAAATATCAATTTGATATA

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_032043.3(BRIP1):​c.1697_1698insTATATCAAATTGATATTTCAACAAC​(p.Lys567fs) variant causes a frameshift, stop gained change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BRIP1 NM_032043.3 frameshift, stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:5
• Conservation: PhyloP100: 5.08

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 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 17-61780936-G-GGTTGTTGAAATATCAATTTGATATA is Pathogenic according to our data. Variant chr17-61780936-G-GGTTGTTGAAATATCAATTTGATATA is described in ClinVar as [Pathogenic]. Clinvar id is 241628.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRIP1	NM_032043.3	c.1697_1698insTATATCAAATTGATATTTCAACAAC	p.Lys567fs	frameshift_variant, stop_gained	12/20	ENST00000259008.7	NP_114432.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRIP1	ENST00000259008.7	c.1697_1698insTATATCAAATTGATATTTCAACAAC	p.Lys567fs	frameshift_variant, stop_gained	12/20	1	NM_032043.3	ENSP00000259008.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary cancer-predisposing syndrome Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Ambry Genetics	May 10, 2022	The c.1697_1698ins25 variant, located in coding exon 11 of the BRIP1 gene, results from an insertion of 25 nucleotides at position 1697, causing a translational frameshift with a predicted alternate stop codon (p.K567Ifs*4). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. -
Pathogenic, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Jan 15, 2020	This variant is located in the BRIP1 protein. Splice site prediction tools suggest that this variant may not impact RNA splicing. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Loss of BRIP1 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. -

Familial cancer of breast;C1836860:Fanconi anemia complementation group J Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 11, 2016

This sequence change inserts 25 nucleotides in exon 12 of the BRIP1 mRNA (c.1697_1698insTATATCAAATTGATATTTCAACAAC), causing a frameshift at codon 567. This creates a premature translational stop signal (p.Lys567Ilefs*4) and is expected to result in an absent or disrupted protein product. While this particular variant has not been reported in the literature, truncating variants in BRIP1 are known to be pathogenic (PMID: 16116423, 17033622, 21964575). For these reasons, this variant has been classified as Pathogenic. -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Nov 17, 2017

This insertion of 25 nucleotides in BRIP1 is denoted c.1697_1698ins25 at the cDNA level and p.Lys567IlefsX4 (K567IfsX4) at the protein level. The surrounding sequence is CAGA[ins25]CAAA. The insertion causes a frameshift, which changes a Lysine to an Isoleucine at codon 567 and creates a premature stop codon at position 4 of the new reading frame. Although this variant has not, to our knowledge, been reported in the literature, it is predicted to cause loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay. Based on the currently available evidence, we consider this insertion to be pathogenic. -

Familial cancer of breast Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Myriad Genetics, Inc.

Jun 05, 2023

This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation. -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs878855140; hg19: chr17-59858297;