17-43091924-G-T

Variant names:

• chr17-43091924-G-T
• rs62625308
• NM_007294.4:c.3607C>A
• BRCA1 p.Arg1203Arg

GermlineCancer (beta)

Variant summary

Our verdict is Likely benign.

-3 Likely Benign

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received -3 classification points (ACMG Germline Pathogenicity v2019). PM2BP4_StrongBP7

The NM_007294.4(BRCA1):c.3607C>A (p.Arg1203Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. In-silico predictor (BayesDel (noAF)) classifies this variant as likely benign. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BRCA1 NM_007294.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.16
• Publications: 1 publications found

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]

BRCA1 Gene-Disease associations (from GenCC):

• BRCA1-related cancer predisposition

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• breast-ovarian cancer, familial, susceptibility to, 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Fanconi anemia, complementation group S

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), ClinGen
• pancreatic cancer, susceptibility to, 4

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• hereditary breast ovarian cancer syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Fanconi anemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Classification according to ACMG Germline Pathogenicity v2019

Specifications for BRCA1 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript:

Our verdict: Likely_benign. The variant received -3 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	PM2Absent/extremely low in population databases		Absent from gnomAD (AD/XL gene) — PM2; Absent from gnomAD at well-covered site (MOI: AD+AR) (base 0.0001, raised to 0.000118 by highest known P/LP ClinVar AF 0.000118) — PM2 moderate.
	BP4Computational evidence suggests no impact		Computational evidence supports benign — no pathogenic computational or splicing signal (BP4); Splicing verdict: benign (Strong).; Germline computational verdict: benign (Strong).
	BP7Synonymous variant, no splicing impact		Synonymous variant at non-conserved position with no predicted splicing impact (BP7); Synonymous at non-conserved position, no splicing concern — benign (BP7).

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_007294.4. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	BRCA1 NM_007294.4	MANE Select	c.3607C>A p.Arg1203Arg	synonymous	Exon 10 of 23	Prot: NP_009225.1 UniProt:
	BRCA1 NM_001407581.1		c.3607C>A p.Arg1203Arg	synonymous	Exon 10 of 24	Prot: NP_001394510.1 UniProt:
	BRCA1 NM_001407582.1		c.3607C>A p.Arg1203Arg	synonymous	Exon 10 of 24	Prot: NP_001394511.1 UniProt:

BRCA1 NM_007294.4

MANE Select

HGVSc / HGVSpc.3607C>Ap.Arg1203Arg

Exon rankExon 10 of 23

synonymous

Prot: NP_009225.1UniProt: P38398-1

BRCA1 NM_001407581.1

HGVSc / HGVSpc.3607C>Ap.Arg1203Arg

Exon rankExon 10 of 24

synonymous

Prot: NP_001394510.1UniProt: A0A2R8Y7V5

BRCA1 NM_001407582.1

HGVSc / HGVSpc.3607C>Ap.Arg1203Arg

Exon rankExon 10 of 24

synonymous

Prot: NP_001394511.1UniProt: A0A2R8Y7V5

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	BRCA1 ENST00000357654.9	TSL:1MANE Select	c.3607C>A p.Arg1203Arg	synonymous	Exon 10 of 23	Prot: ENSP00000350283.3 UniProt:
	BRCA1 ENST00000471181.7	TSL:1	c.3607C>A p.Arg1203Arg	synonymous	Exon 10 of 24	Prot: ENSP00000418960.2 UniProt:
	BRCA1 ENST00000470026.6	TSL:1	c.3607C>A p.Arg1203Arg	synonymous	Exon 10 of 23	Prot: ENSP00000419274.2 UniProt:

BRCA1 ENST00000357654.9

TSL:1MANE Select

HGVSc / HGVSpc.3607C>Ap.Arg1203Arg

Exon rankExon 10 of 23

synonymous

Prot: ENSP00000350283.3UniProt: P38398-1

BRCA1 ENST00000471181.7

TSL:1

HGVSc / HGVSpc.3607C>Ap.Arg1203Arg

Exon rankExon 10 of 24

synonymous

Prot: ENSP00000418960.2UniProt: P38398-7

BRCA1 ENST00000470026.6

TSL:1

HGVSc / HGVSpc.3607C>Ap.Arg1203Arg

Exon rankExon 10 of 23

synonymous

Prot: ENSP00000419274.2UniProt: P38398-1

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 4 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:32
GnomAD4 exome	AF:	AC:	Hom:	AN:	Cov:33
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:32
ALFA (dbGaP/dbSNP Allele Frequency Aggregator)	AF: 0.00	AC:0	Hom:0	AN:313062	Cov:

Showing 4 sources

ClinVar

Not reported in ClinVar

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
AlphaGenome AVI	Benign	8.4
BayesDel_noAF	Benign	-0.79
CADD	Benign	0.71
DANN	Benign	0.46
GPN-Star LLR	N/A	-2.4
GPN-Star score	N/A	2.4
PhyloP100	Benign	1.2
PromoterAI	N/A	-0.0038	Neutral
RBP_binding_hub_radar	N/A	0.0
RBP_regulation_power_radar	N/A	1.7

Showing 10 of 10 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
Pangolin (max)	Benign	0.0
SpliceAI score (max)	Benign	0.0	Details are displayed if max score is > 0.2

Showing 2 of 2 scores

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

No MaveDB functional evidence found for this variant.

Other links and lift over

dbSNP: rs62625308;

hg19: chr17-41243941;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar