rs146810942

Positions:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM1BP4_ModerateBP6BS2

The NM_000435.3(NOTCH3):c.203C>T(p.Pro68Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000201 in 1,580,732 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. P68P) has been classified as Benign.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00021 ( 2 hom. )

Consequence

NOTCH3
NM_000435.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: -0.699

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM1

In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 3 benign, 5 uncertain in NM_000435.3

BP4

Computational evidence support a benign effect (MetaRNN=0.16497251).

BP6

Variant 19-15192514-G-A is Benign according to our data. Variant chr19-15192514-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 328420.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=1}.

BS2

High AC in GnomAd4 at 21 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NOTCH3	NM_000435.3 linkuse as main transcript	c.203C>T	p.Pro68Leu	missense_variant	3/33	ENST00000263388.7
NOTCH3	XM_005259924.5 linkuse as main transcript	c.203C>T	p.Pro68Leu	missense_variant	3/32

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NOTCH3	ENST00000263388.7 linkuse as main transcript	c.203C>T	p.Pro68Leu	missense_variant	3/33	1	NM_000435.3	P1
NOTCH3	ENST00000601011.1 linkuse as main transcript	c.200C>T	p.Pro67Leu	missense_variant	3/23	5

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000111

AC:

AN:

188688

Hom.:

AF XY:

0.000117

AC XY:

AN XY:

102242

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000285

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000782

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000139

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000207

AC:

296

AN:

1428542

Hom.:

Cov.:

AF XY:

0.000205

AC XY:

145

AN XY:

707848

show subpopulations

Gnomad4 AFR exome

AF:

0.000122

Gnomad4 AMR exome

AF:

0.000203

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000170

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000222

Gnomad4 OTH exome

AF:

0.000287

GnomAD4 genome

AF:

0.000138

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000166

Hom.:

Bravo

AF:

0.000113

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000817

AC:

ExAC

AF:

0.0000919

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

NOTCH3-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 18, 2023

The NOTCH3 c.203C>T variant is predicted to result in the amino acid substitution p.Pro68Leu. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.028% of alleles in individuals of Latino descent in gnomAD (http://gnomad.broadinstitute.org/variant/19-15303325-G-A), which may be too common to be an undocumented disease causing variant. Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Athena Diagnostics

Feb 15, 2017

- -

Cerebral arteriopathy, autosomal dominant, with subcortical infarcts and leukoencephalopathy, type 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Feb 01, 2024

NOTCH3: BP1, BP5 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.061

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Benign

0.85

DEOGEN2

Uncertain

0.73

D;D

Eigen

Benign

-0.86

Eigen_PC

Benign

-0.84

FATHMM_MKL

Benign

0.071

LIST_S2

Benign

0.46

T;T

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.16

T;T

MetaSVM

Benign

-0.43

MutationAssessor

Benign

0.35

N;.

MutationTaster

Benign

1.0

PrimateAI

Benign

0.41

PROVEAN

Uncertain

-2.6

D;.

REVEL

Benign

0.23

Sift

Benign

0.18

T;.

Sift4G

Benign

0.089

T;T

Polyphen

0.0030

B;.

Vest4

0.16

MVP

0.90

MPC

0.43

ClinPred

0.021

GERP RS

-1.5

Varity_R

0.049

gMVP

0.61

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over