17-43097280-G-T

Position:

• chr17-43097280-G-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_007294.4(BRCA1):​c.557C>A​(p.Ser186Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.00049 in 1,613,484 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).

• Frequency:
  • Genomes: 𝑓 0.0027 (1 hom., cov: 33)
  • Exomes 𝑓: 0.00026 (4 hom.)
• Consequence: BRCA1 NM_007294.4 missense
• Clinical Significance: Benign reviewed by expert panel U:3 B:31 O:1
• Conservation: PhyloP100: 4.07

Genes affected

BRCA1 (HGNC:1100): (BRCA1 DNA repair associated) This gene encodes a 190 kD nuclear phosphoprotein that plays a role in maintaining genomic stability, and it also acts as a tumor suppressor. The BRCA1 gene contains 22 exons spanning about 110 kb of DNA. The encoded protein combines with other tumor suppressors, DNA damage sensors, and signal transducers to form a large multi-subunit protein complex known as the BRCA1-associated genome surveillance complex (BASC). This gene product associates with RNA polymerase II, and through the C-terminal domain, also interacts with histone deacetylase complexes. This protein thus plays a role in transcription, DNA repair of double-stranded breaks, and recombination. Mutations in this gene are responsible for approximately 40% of inherited breast cancers and more than 80% of inherited breast and ovarian cancers. Alternative splicing plays a role in modulating the subcellular localization and physiological function of this gene. Many alternatively spliced transcript variants, some of which are disease-associated mutations, have been described for this gene, but the full-length natures of only some of these variants has been described. A related pseudogene, which is also located on chromosome 17, has been identified. [provided by RefSeq, May 2020]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.010391861).
• BP6: Variant 17-43097280-G-T is Benign according to our data. Variant chr17-43097280-G-T is described in ClinVar as [Benign]. Clinvar id is 55635.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr17-43097280-G-T is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00272 (414/152266) while in subpopulation AFR AF= 0.00934 (388/41552). AF 95% confidence interval is 0.00857. There are 1 homozygotes in gnomad4. There are 183 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 4 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRCA1	NM_007294.4	c.557C>A	p.Ser186Tyr	missense_variant	8/23	ENST00000357654.9	NP_009225.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRCA1	ENST00000357654.9	c.557C>A	p.Ser186Tyr	missense_variant	8/23	1	NM_007294.4	ENSP00000350283	P4

Frequencies

GnomAD3 genomes AF: 0.00271 AC: 412 AN: 152148 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.00932

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00191

GnomAD3 exomes AF: 0.000693 AC: 174 AN: 251160 Hom.: 3 AF XY: 0.000471 AC XY: 64 AN XY: 135824

Gnomad AFR exome AF: 0.00956

Gnomad AMR exome AF: 0.000318

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: 0.0000352

Gnomad OTH exome AF: 0.000654

GnomAD4 exome AF: 0.000257 AC: 376 AN: 1461218 Hom.: 4 Cov.: 30 AF XY: 0.000250 AC XY: 182 AN XY: 726932

Gnomad4 AFR exome AF: 0.00888

Gnomad4 AMR exome AF: 0.000537

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000900

Gnomad4 OTH exome AF: 0.000679

GnomAD4 genome AF: 0.00272 AC: 414 AN: 152266 Hom.: 1 Cov.: 33 AF XY: 0.00246 AC XY: 183 AN XY: 74440

Gnomad4 AFR AF: 0.00934

Gnomad4 AMR AF: 0.00131

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.00189

Alfa AF: 0.000511 Hom.: 3

Bravo AF: 0.00310

ESP6500AA AF: 0.00681 AC: 30

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.000939 AC: 114

Asia WGS AF: 0.000577 AC: 2 AN: 3478

EpiCase AF: 0.0000546

EpiControl AF: 0.000178

ClinVar

Significance: Benign

Submissions summary: Uncertain:3 Benign:31 Other:1

Revision: reviewed by expert panel

Submissions by phenotype

Breast-ovarian cancer, familial, susceptibility to, 1 Uncertain:1 Benign:9

Benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Benign, reviewed by expert panel	curation	Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA)	Aug 10, 2015	IARC class based on posterior probability from multifactorial likelihood analysis, thresholds for class as per Plon et al. 2008 (PMID: 18951446). Class 1 based on posterior probability = 0.00000000000782. Also class 1 based on frequency >1% in an outbred sampleset. Frequency 0.01423 (African), derived from 1000 genomes (2012-04-30). -
Benign, criteria provided, single submitter	literature only	Counsyl	Feb 13, 2015	- -
Benign, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Feb 05, 2024	- -
Likely benign, no assertion criteria provided	clinical testing	Pathway Genomics	Jul 24, 2014	- -
Benign, no assertion criteria provided	clinical testing	Sharing Clinical Reports Project (SCRP)	Jul 03, 2006	- -
Benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Uncertain significance, no assertion criteria provided	clinical testing	Breast Cancer Information Core (BIC) (BRCA1)	May 29, 2002	- -
Benign, no assertion criteria provided	clinical testing	BRCAlab, Lund University	Mar 02, 2020	- -
Benign, criteria provided, single submitter	clinical testing	KCCC/NGS Laboratory, Kuwait Cancer Control Center	Jul 07, 2023	- -

not specified Benign:7 Other:1

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jul 02, 2014	- -
not provided, no classification provided	reference population	ITMI	Sep 19, 2013	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Aug 24, 2021	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Benign, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital	Feb 06, 2024	- -

not provided Uncertain:1 Benign:4

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jul 01, 2024	BRCA1: PM5, BS2 -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 07, 2018	This variant is associated with the following publications: (PMID: 17924331, 16014699, 24055113, 25637381, 21990134, 22505045, 21673748, 26332594, 24728327, 19298662, 15726418, 11030417, 23867111, 17333343, 29356034, 33087888) -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 29, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Aug 24, 2015	- -
Likely benign, no assertion criteria provided	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Oct 07, 2015	- -

Hereditary breast ovarian cancer syndrome Uncertain:1 Benign:4

Likely benign, criteria provided, single submitter	research	CSER _CC_NCGL, University of Washington	Jun 01, 2014	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia	Sep 24, 2015	- -
Benign, criteria provided, single submitter	clinical testing	National Health Laboratory Service, Universitas Academic Hospital and University of the Free State	Apr 19, 2022	- -
Benign, criteria provided, single submitter	research	Genetics Program, Instituto Nacional de Cancer	Nov 01, 2021	- -

Hereditary cancer-predisposing syndrome Benign:4

Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Nov 24, 2014	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Nov 18, 2014	This alteration is classified as 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. -
Likely benign, criteria provided, single submitter	clinical testing	Vantari Genetics	Feb 04, 2016	- -
Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	Mar 22, 2021	- -

Breast and/or ovarian cancer Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Jan 03, 2023

- -

Malignant tumor of breast Benign:1

Benign, no assertion criteria provided

clinical testing

Department of Pathology and Laboratory Medicine, Sinai Health System

-

- -

Familial cancer of breast Benign:1

Benign, criteria provided, single submitter

clinical testing

Baylor Genetics

Feb 23, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.36
BayesDel_addAF	Uncertain	0.049	T
BayesDel_noAF	Pathogenic	0.30
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Benign	0.22	.;T;.;.;.;.;T;.;.;T;.;T;T
Eigen	Pathogenic	0.70
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Uncertain	0.97	D;D;D;D;D;D;D;D;D;D;D;D;D
MetaRNN	Benign	0.010	T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Pathogenic	0.90	D
MutationAssessor	Uncertain	2.5	M;M;M;M;.;M;.;.;.;.;.;.;.
MutationTaster	Benign	0.73	D;D;D;D;D;D;D;D;D;D;D;N;N;N
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-1.7	N;N;N;D;N;D;D;N;N;N;N;N;D
REVEL	Pathogenic	0.78
Sift	Uncertain	0.010	D;D;D;D;D;D;D;D;D;D;D;D;D
Sift4G	Benign	0.099	T;D;D;D;D;D;.;D;D;D;.;D;.
Polyphen		1.0, 1.0	.;D;.;.;.;D;.;.;D;.;.;.;.
Vest4		0.46
MVP		0.97
MPC		0.49
ClinPred		0.034	T
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.48
gMVP		0.58

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs55688530; hg19: chr17-41249297; COSMIC: COSV104621551; COSMIC: COSV104621551;