17-61793707-A-T

Position:

• chr17-61793707-A-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_032043.3(BRIP1):​c.1363T>A​(p.Tyr455Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000617 in 1,458,596 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: BRIP1 NM_032043.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 1.68

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 Likely_benign. Variant got -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.13874489).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRIP1	NM_032043.3	c.1363T>A	p.Tyr455Asn	missense_variant	10/20	ENST00000259008.7	NP_114432.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRIP1	ENST00000259008.7	c.1363T>A	p.Tyr455Asn	missense_variant	10/20	1	NM_032043.3	ENSP00000259008.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000806 AC: 2 AN: 248084 Hom.: 0 AF XY: 0.0000149 AC XY: 2 AN XY: 134154

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: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000178

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000617 AC: 9 AN: 1458596 Hom.: 0 Cov.: 30 AF XY: 0.00000827 AC XY: 6 AN XY: 725568

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000720

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Dec 14, 2023	The p.Y455N variant (also known as c.1363T>A), located in coding exon 9 of the BRIP1 gene, results from a T to A substitution at nucleotide position 1363. The tyrosine at codon 455 is replaced by asparagine, an amino acid with dissimilar properties. This alteration was identified in 1/1358 non-cancer control individuals and in 0/57 cases, in a study looking at cancer predisposition mutations in patients with cutaneous melanoma and a history of at least two additional non-cutaneous melanoma primary cancers. This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Feb 21, 2019	- -

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

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 08, 2023

This sequence change replaces tyrosine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 455 of the BRIP1 protein (p.Tyr455Asn). This variant is present in population databases (rs587780826, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with BRIP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 136142). 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. -

Familial cancer of breast Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Dec 16, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.044
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.49
CADD	Benign	17
DANN	Benign	0.79
DEOGEN2	Benign	0.073	T;.
Eigen	Benign	-0.68
Eigen_PC	Benign	-0.48
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Benign	0.60	T;T
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.14	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N;N
PrimateAI	Benign	0.36	T
PROVEAN	Benign	1.5	N;.
REVEL	Benign	0.065
Sift	Benign	0.72	T;.
Sift4G	Benign	0.32	T;T
Polyphen		0.0	B;.
Vest4		0.23
MutPred		0.44		Gain of disorder (P = 0.0537);Gain of disorder (P = 0.0537);
MVP		0.66
MPC		0.27
ClinPred		0.050	T
GERP RS		1.5
Varity_R		0.035
gMVP		0.35

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

Other links and lift over

dbSNP: rs587780826; hg19: chr17-59871068;