rs786203384

Positions:

• chr17-61744580-TT-TGGA

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.2108delinsTCC​(p.Lys703IlefsTer3) variant causes a frameshift change involving the alteration of a conserved nucleotide. 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
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:7
• Conservation: PhyloP100: 7.53

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]

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 17-61744581-T-GGA is Pathogenic according to our data. Variant chr17-61744581-T-GGA is described in ClinVar as [Pathogenic]. Clinvar id is 186992.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.2108delinsTCC	p.Lys703IlefsTer3	frameshift_variant	15/20	ENST00000259008.7	NP_114432.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRIP1	ENST00000259008.7	c.2108delinsTCC	p.Lys703IlefsTer3	frameshift_variant	15/20	1	NM_032043.3	ENSP00000259008	P2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Familial cancer of breast Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Jan 22, 2024	- -
Pathogenic, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Jun 06, 2023	This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation. -

Hereditary cancer-predisposing syndrome Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Apr 16, 2022	This variant replaces 1 nucleotide with 3 new nucleotides in exon 15 of the BRIP1 gene, creating a frameshift and premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. This variant has been reported in individuals affected with ovarian cancer, breast cancer, and pancreatic cancer (PMID: 22006311, 24240112, 26720728, 29961768). 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. -
Pathogenic, criteria provided, single submitter	clinical testing	Ambry Genetics	Feb 15, 2022	The c.2108delAinsTCC pathogenic mutation, located in coding exon 14 of the BRIP1 gene, results from the deletion of one nucleotide and insertion of 3 nucleotides causing a translational frameshift with a predicted alternate stop codon (p.K703Ifs*3). This mutation has previously been reported in multiple individuals and families affected with ovarian and/or breast cancer (Walsh T et al. Proc. Natl. Acad. Sci. U.S.A. 2011 Nov;108:18032-7; Helgadottir HT et al. Sci Rep, 2021 07;11:14737; Arvai KJ et al. Hered Cancer Clin Pract, 2019 Jul;17:19; Carter NJ et al. Gynecol Oncol, 2018 12;151:481-488; Norquist BM et al. JAMA Oncol, 2016 Apr;2:482-90; Kanchi KL et al. Nat Commun, 2014;5:3156), in a patient diagnosed with both breast and pancreatic cancers (Yurgelun MB et al. Genet Med, 2019 01;21:213-223), and in a patient with medulloblastoma (Waszak SM et al. Lancet Oncol. 2018 Jun;19:785-798). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). In addition to the clinical data presented in the literature, 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. -

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

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 28, 2024

This sequence change creates a premature translational stop signal (p.Lys703Ilefs*3) in the BRIP1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in BRIP1 are known to be pathogenic (PMID: 16116423, 17033622, 21964575). This variant is present in population databases (rs760863397, gnomAD 0.005%). This premature translational stop signal has been observed in individual(s) with breast cancer, ovarian cancer, and/or pancreatic cancer (PMID: 22006311, 25452441, 26720728, 29961768). ClinVar contains an entry for this variant (Variation ID: 186992). For these reasons, this variant has been classified as Pathogenic. -

Fanconi anemia complementation group J Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Revvity Omics, Revvity

Sep 11, 2020

- -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Nov 03, 2023

Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 17033622, 26689913, 22006311, 25452441, 26720728, 26681312, 26315354, 19763819, 23242139, 26921362, 29753700, 29961768, 30322717, 32782288, 16116423, 24448499, 21964575, 31341520, 34282249) -

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: rs786203384; hg19: chr17-59821942;