Genetic Variant NOTCH3:c.-314G>A (chr19-15201219-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000435.3(NOTCH3):c.-314G>A variant causes a upstream gene change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 151,504 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 30)

Consequence

NOTCH3
NM_000435.3 upstream_gene

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.186

Publications

3 publications found

Variant links:

Genes affected

NOTCH3 (HGNC:7883): (notch receptor 3) This gene encodes the third discovered human homologue of the Drosophilia melanogaster type I membrane protein notch. In Drosophilia, notch interaction with its cell-bound ligands (delta, serrate) establishes an intercellular signalling pathway that plays a key role in neural development. Homologues of the notch-ligands have also been identified in human, but precise interactions between these ligands and the human notch homologues remains to be determined. Mutations in NOTCH3 have been identified as the underlying cause of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). [provided by RefSeq, Jul 2008]

NOTCH3 Gene-Disease associations (from GenCC):

cerebral arteriopathy, autosomal dominant, with subcortical infarcts and leukoencephalopathy, type 1
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Laboratory for Molecular Medicine, Orphanet, Labcorp Genetics (formerly Invitae)
lateral meningocele syndrome
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
infantile myofibromatosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
myofibromatosis, infantile, 2
Inheritance: AD Classification: LIMITED Submitted by: G2P
pulmonary arterial hypertension
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

NOTCH3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.79).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOTCH3	NM_000435.3 link	c.-314G>A		upstream_gene_variant		ENST00000263388.7	NP_000426.2	Q9UM47
NOTCH3	XM_005259924.5 link	c.-314G>A		upstream_gene_variant			XP_005259981.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOTCH3	ENST00000263388.7 link	c.-314G>A		upstream_gene_variant		1	NM_000435.3	ENSP00000263388.1		Q9UM47

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151504

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000727

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151504

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73926

show subpopulations

African (AFR)

AF:

0.0000727

AC:

AN:

41284

American (AMR)

AF:

0.00

AC:

AN:

15186

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3458

East Asian (EAS)

AF:

0.00

AC:

AN:

5110

South Asian (SAS)

AF:

0.00

AC:

AN:

4804

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10568

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67792

Other (OTH)

AF:

0.00

AC:

AN:

2074

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

763

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.79

CADD

Benign

8.3

(source)

DANN

Benign

0.76

PhyloP100

0.19

PromoterAI

0.027

Neutral

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over