rs80357110

chr17-43104883-C-Achr17-43104883-C-Gchr17-43104883-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1 PM2 PM5 PP3_Moderate

The NM_007294.4(BRCA1):c.286G>T(p.Asp96Tyr) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as not provided (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D96E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BRCA1 NM_007294.4 missense
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 4.63

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 Likely_pathogenic. Variant got 8 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 6 benign, 16 uncertain in NM_007294.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr17-43104882-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 220258.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.86

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BRCA1	NM_007294.4	c.286G>T	p.Asp96Tyr	missense_variant	5/23	ENST00000357654.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BRCA1	ENST00000357654.9	c.286G>T	p.Asp96Tyr	missense_variant	5/23	1	NM_007294.4	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

Breast-ovarian cancer, familial, susceptibility to, 1 Other:1

not provided, no classification provided

in vitro

Brotman Baty Institute, University of Washington

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.91
BayesDel_addAF	Pathogenic	0.51	D
BayesDel_noAF	Pathogenic	0.49
Cadd	Pathogenic	27
Dann	Uncertain	1.0
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP	Pathogenic	0.70	D
MetaRNN	Pathogenic	0.86	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.98	D
MutationAssessor	Uncertain	2.5	M;M;M;M;.;M;.;.;.;.;.;.;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D;D;D;N;N
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-2.2	N;N;N;D;N;D;N;D;D;D;N;.;N;N;N;D;D;.
REVEL	Pathogenic	0.80
Sift	Pathogenic	0.0	D;D;D;D;D;D;D;D;D;D;D;.;D;D;D;D;D;.
Sift4G	Uncertain	0.020	D;D;D;D;D;D;.;.;D;.;D;.;D;.;D;.;.;.
Polyphen		0.99, 1.0	.;D;.;.;.;D;.;.;.;.;D;.;.;.;.;.;.;.
Vest4		0.93
MutPred		0.57		Loss of catalytic residue at G98 (P = 0.163);Loss of catalytic residue at G98 (P = 0.163);Loss of catalytic residue at G98 (P = 0.163);Loss of catalytic residue at G98 (P = 0.163);.;Loss of catalytic residue at G98 (P = 0.163);.;Loss of catalytic residue at G98 (P = 0.163);.;.;Loss of catalytic residue at G98 (P = 0.163);Loss of catalytic residue at G98 (P = 0.163);Loss of catalytic residue at G98 (P = 0.163);.;Loss of catalytic residue at G98 (P = 0.163);Loss of catalytic residue at G98 (P = 0.163);.;.;
MVP		0.97
MPC		0.49
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.79
gMVP		0.75

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.12		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: rs80357110; hg19: chr17-41256900;