rs755796609

chr17-61801375-G-Achr17-61801375-G-Cchr17-61801375-G-T

Variant summary

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

The NM_032043.3(BRIP1):c.1018C>T(p.Leu340Phe) variant causes a missense change. The variant allele was found at a frequency of 0.00000805 in 1,613,952 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L340P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

BRIP1
NM_032043.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:2

Conservation

PhyloP100: 6.07

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BRIP1	NM_032043.3 linkuse as main transcript	c.1018C>T	p.Leu340Phe	missense_variant	8/20	ENST00000259008.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BRIP1	ENST00000259008.7 linkuse as main transcript	c.1018C>T	p.Leu340Phe	missense_variant	8/20	1	NM_032043.3	P2	Q9BX63-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152134

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:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251306

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135820

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461702

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727162

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000227

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74452

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000386

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.0000165

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:7Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Feb 13, 2023	Variant summary: BRIP1 c.1018C>T (p.Leu340Phe) results in a non-conservative amino acid change located in the Helicase-like, DEXD box c2 type domain (IPR006554) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 1.2e-05 in 251306 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.1018C>T has been reported in the literature in individuals affected with Breast Cancer (Kim_2016) including with classification as VUS (Kwong_2020). The variant has additionally been reported as a VUS in individuals with other cancers including esophageal squamous cell carcinoma (Deng_2019), epithelial ovarian cancer (Yao_2022), pancreatic ductal adenocarcinoma (Cremin_2020). These report(s) do not provide unequivocal conclusions about association of the variant with Breast Cancer. At least one publication reports experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in >50%-90% of normal activity in in vitro assays, but retains the ability to restore wild type-level protein activity in cell-based assays (Odermatt_2020). Six ClinVar submitters have submitted clinical-significance assessments for this variant to ClinVar after 2014. Multiple laboratories reported the variant with conflicting assessments including uncertain significance (n=4), likely benign (n=1), and benign (n=1). Based on the evidence outlined above, the variant was classified as uncertain significance. -
Benign, no assertion criteria provided	curation	Leiden Open Variation Database	Aug 13, 2019	Curator: Arleen D. Auerbach. Submitter to LOVD: Yukihide Momozawa. -

Hereditary cancer-predisposing syndrome

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Sep 01, 2022	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Apr 11, 2023	This missense variant replaces leucine with phenylalanine at codon 340 of the BRIP1 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with breast cancer (PMID: 26790966) and in an individual affected with esophageal squamous cell carcinoma (PMID: 30833958). In a large breast cancer case-control study, this variant has been observed in 4/60462 cases and 7/53454 controls; OR=0.505 (95%CI 0.148 to 1.726); p-value=0.367 (PMID: 33471991 - Leiden Open Variation Database DB-ID BRIP1_000156). In a pancreatic cancer case-control study, this variant has been observed in 0/1005 cases and 14/23705 controls (PMID: 32980694). In a prostate cancer case-control study, this variant has been observed in 4/7636 cases and 9/12366 controls; OR=0.7196131 (0.16 to 2.58), P-value=0.7771929 (PMID: 31214711). This variant has also been identified in 3/251306 chromosomes 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. -

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jan 27, 2024

This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 340 of the BRIP1 protein (p.Leu340Phe). This variant is present in population databases (rs755796609, gnomAD 0.02%). This missense change has been observed in individual(s) with biliary tract cancer, breast cancer, esophageal cancer, pancreatic cancer, and/or prostate cancer (PMID: 26790966, 30833958, 31214711, 32068069, 32255556). ClinVar contains an entry for this variant (Variation ID: 407835). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt BRIP1 protein function with a negative predictive value of 80%. 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. -

BRIP1-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 27, 2023

The BRIP1 c.1018C>T variant is predicted to result in the amino acid substitution p.Leu340Phe. This variant has been reported as a variant of uncertain significance in individuals with multiple different cancer types; however, no follow-up studies have confirmed its pathogenicity (Deng et al. 2019. PubMed ID: 30833958; Kim et al. 2016. PubMed ID: 26790966; Yin et al. 2022. PubMed ID: 35171259; Okawa et al. 2022. PubMed ID: 36243179). This variant is reported in 0.016% of alleles in individuals of East Asian descent in gnomAD (http://gnomad.broadinstitute.org/variant/17-59878736-G-A). It has conflicting classifications of uncertain and likely benign in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/407835/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Fanconi anemia complementation group J

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Nov 14, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Oct 20, 2022

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Published functional in vitro studies demonstrate ability to rescue BRIP1 knockout cellular phenotypes similar to wild type with a moderate defect (Odermatt et al., 2020); Also known as FANCJ; This variant is associated with the following publications: (PMID: 26790966, 27150160, 24336570, 26709662, 28873162, 30833958, 31214711, 32542039) -

Familial cancer of breast

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Aug 26, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.084

BayesDel_noAF

Benign

-0.090

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.72

D;.

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.80

T;T

M_CAP

Uncertain

0.16

MetaRNN

Uncertain

0.49

T;T

MetaSVM

Uncertain

0.21

MutationAssessor

Uncertain

2.5

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-2.9

D;.

REVEL

Pathogenic

0.66

Sift

Benign

0.046

D;.

Sift4G

Uncertain

0.052

T;T

Polyphen

0.98

D;.

Vest4

0.43

MutPred

0.74

Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);

MVP

0.97

MPC

0.30

ClinPred

0.59

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.54

gMVP

0.71

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