17-61784279-T-A

Position:

chr17-61784279-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM1BP4_Moderate

The ENST00000259008.7(BRIP1):c.1619A>T(p.Gln540Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000174 in 1,612,486 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). Synonymous variant affecting the same amino acid position (i.e. Q540Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

BRIP1
ENST00000259008.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:10B:1

Conservation

PhyloP100: 6.67

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.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 14 uncertain in ENST00000259008.7

BP4

Computational evidence support a benign effect (MetaRNN=0.16024593).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRIP1	NM_032043.3 linkuse as main transcript	c.1619A>T	p.Gln540Leu	missense_variant	11/20	ENST00000259008.7	NP_114432.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRIP1	ENST00000259008.7 linkuse as main transcript	c.1619A>T	p.Gln540Leu	missense_variant	11/20	1	NM_032043.3	ENSP00000259008	P2	Q9BX63-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

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:

0.0000358

AC:

AN:

251070

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135688

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000794

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1460260

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726470

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000689

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00115

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000110

Hom.:

Bravo

AF:

0.0000227

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:10Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Familial cancer of breast

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Baylor Genetics	Mar 12, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	MGZ Medical Genetics Center	Oct 26, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Mar 01, 2023	This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -

Hereditary cancer-predisposing syndrome

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Nov 14, 2022	The p.Q540L variant (also known as c.1619A>T), located in coding exon 10 of the BRIP1 gene, results from an A to T substitution at nucleotide position 1619. The glutamine at codon 540 is replaced by leucine, an amino acid with dissimilar properties. This alteration has been reported in 1/21 BRCA1/2-negative individuals with a personal and family history of breast cancer; however, it was not found in seven of the proband's relatives, including three relatives with breast cancer (Rutter JL et al. Hum. Mutat. 2003 Aug;22:121-8). This alteration has also been reported in a cohort of 48143 individuals diagnosed with invasive breast cancer before the age of 55 years and was not observed in 43608 control subjects (Easton DF et al. J. Med. Genet. 2016 May;53:298-309). In another study, this alteration was observed in 0/706 cases with ovarian cancer, 0/6,341 cases with breast cancer and in 1/36,687 controls (Weber-Lassalle N et al. Breast Cancer Res. 2018 Jan;20:7). In one study, this alteration was detected in 1/2160 early-onset breast cancer cases and 1/1,199 ovarian cancer cases; the patient with ovarian cancer also had a pathogenic alteration in BRCA1 or BRCA2 (Moyer CL et al. Cancer Res. 2020 Feb;80:857-867). This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Likely benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Jul 12, 2016	- -
Uncertain significance, criteria provided, single submitter	curation	Sema4, Sema4	May 15, 2021	- -

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

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 16, 2024	This sequence change replaces glutamine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 540 of the BRIP1 protein (p.Gln540Leu). This variant is present in population databases (rs4988349, gnomAD 0.07%). This missense change has been observed in individual(s) with breast cancer (PMID: 12872252, 31822495). ClinVar contains an entry for this variant (Variation ID: 142473). 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 31, 2018	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Nov 24, 2017

Variant summary: The BRIP1 c.1619A>T (p.Gln540Leu) variant involves the alteration of a conserved nucleotide and 2/4 in silico tools predict a benign outcome for this variant (SNPsandGO not captured due to low reliability index). However, these predictions have yet to be functionally assessed. This variant was found in 7/349872 control chromosomes (gnomAD), predominantly observed in the Ashkenazi Jewish subpopulation at a frequency of 0.000712 (7/9838). This frequency is about 11 times the estimated maximal expected allele frequency of a pathogenic BRIP1 variant (0.0000625), suggesting this is likely a benign polymorphism found primarily in those of Ashkenazi Jewish origin. A publication, Rutter_2003, indicates the variant was found in a Breast Cancer family, which three affected family members did not carry the variant of interest showing lack of cosegregation. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance. Taken together, this variant is classified as a "Variant of Uncertain Significance - Possibly Benign." -

Ovarian neoplasm;C1836860:Fanconi anemia complementation group J

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Oct 04, 2017

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Nov 19, 2023

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 26659599, 31822495, 12872252, 26921362, 19584272, 27527004, 29368626, 36845387) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Uncertain

0.045

BayesDel_noAF

Benign

-0.17

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.40

T;.

Eigen

Uncertain

0.31

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.77

T;T

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.16

T;T

MetaSVM

Benign

-0.44

MutationAssessor

Uncertain

2.4

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.41

PROVEAN

Uncertain

-4.0

D;.

REVEL

Uncertain

0.36

Sift

Benign

0.085

T;.

Sift4G

Benign

0.11

T;T

Polyphen

0.65

P;.

Vest4

0.27

MVP

0.88

MPC

0.19

ClinPred

0.46

GERP RS

5.4

Varity_R

0.25

gMVP

0.43

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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