rs1555729455

Positions:

• chr19-15192005-A-G
• chr19-15192005-A-T

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1 PM2 PM5 PP3_Strong PP5

The NM_000435.3(NOTCH3):​c.634T>C​(p.Cys212Arg) variant causes a missense change involving the alteration of a conserved nucleotide. 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 Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C212G) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: NOTCH3 NM_000435.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.39

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]

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 2 uncertain in NM_000435.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr19-15192005-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 2915520.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.997
• PP5: Variant 19-15192005-A-G is Pathogenic according to our data. Variant chr19-15192005-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 812745.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NOTCH3	NM_000435.3	c.634T>C	p.Cys212Arg	missense_variant	4/33	ENST00000263388.7
NOTCH3	XM_005259924.5	c.634T>C	p.Cys212Arg	missense_variant	4/32

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NOTCH3	ENST00000263388.7	c.634T>C	p.Cys212Arg	missense_variant	4/33	1	NM_000435.3	P1
NOTCH3	ENST00000601011.1	c.631T>C	p.Cys211Arg	missense_variant	4/23	5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Atypical behavior;C0011581:Depression;C0149931:Migraine;C0154723:Migraine with aura;C0338656:Cognitive impairment;C0948008:Ischemic stroke;C0948163:Abnormal cerebral white matter morphology Pathogenic:1

Pathogenic, no assertion criteria provided

research

NIHR Bioresource Rare Diseases, University of Cambridge

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.58
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.97	D;D
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D;D
M_CAP	Pathogenic	0.81	D
MetaRNN	Pathogenic	1.0	D;D
MetaSVM	Pathogenic	0.97	D
MutationAssessor	Pathogenic	5.0	H;.
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-10	D;.
REVEL	Pathogenic	0.98
Sift	Pathogenic	0.0	D;.
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;.
Vest4		0.99
MutPred		0.99		Gain of phosphorylation at S215 (P = 0.0561);.;
MVP		1.0
MPC		1.5
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.97
gMVP		0.99

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

Other links and lift over

dbSNP: rs1555729455; hg19: chr19-15302816;