chr19-15187171-G-A

Variant names:

• chr19-15187171-G-A
• rs764148985
• NM_000435.3:c.1774C>T

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1 PP3_Moderate PP5

The NM_000435.3(NOTCH3):​c.1774C>T​(p.Arg592Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000547 in 1,461,736 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R592S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: NOTCH3 NM_000435.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4 U:1
• Conservation: PhyloP100: 2.15
• Publications: 13 publications found

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: AD, AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet
• lateral meningocele syndrome

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• 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

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 4 uncertain in NM_000435.3
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.869
• PP5: Variant 19-15187171-G-A is Pathogenic according to our data. Variant chr19-15187171-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 808495.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000435.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NOTCH3	NM_000435.3	MANE Select	c.1774C>T	p.Arg592Cys	missense	Exon 11 of 33	NP_000426.2	Q9UM47

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NOTCH3	ENST00000263388.7	TSL:1 MANE Select	c.1774C>T	p.Arg592Cys	missense	Exon 11 of 33	ENSP00000263388.1	Q9UM47
	NOTCH3	ENST00000931534.1		c.1774C>T	p.Arg592Cys	missense	Exon 11 of 34	ENSP00000601593.1
	NOTCH3	ENST00000931532.1		c.1753C>T	p.Arg585Cys	missense	Exon 11 of 32	ENSP00000601591.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000399 AC: 1 AN: 250378 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000884

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000547 AC: 8 AN: 1461736 Hom.: 0 Cov.: 33 AF XY: 0.00000413 AC XY: 3 AN XY: 727178

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53318

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111990

Other (OTH) AF: 0.0000166 AC: 1 AN: 60384

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000165 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
3	1	-	not provided (4)
1	-	-	Cerebral arteriopathy, autosomal dominant, with subcortical infarcts and leukoencephalopathy, type 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.43
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.070
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.78	D
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.97	D
M_CAP	Uncertain	0.13	D
MetaRNN	Pathogenic	0.87	D
MetaSVM	Uncertain	0.62	D
MutationAssessor	Benign	1.3	L
PhyloP100		2.1
PrimateAI	Uncertain	0.57	T
PROVEAN	Pathogenic	-4.5	D
REVEL	Pathogenic	0.69
Sift	Uncertain	0.017	D
Sift4G	Uncertain	0.017	D
Polyphen		0.99	D
Vest4		0.90
MutPred		0.68		Loss of disorder (P = 0.0584)
MVP		1.0
MPC		1.3
ClinPred		0.97	D
GERP RS		4.5
Varity_R		0.46
gMVP		0.80
Mutation Taster		=25/75	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs764148985; hg19: chr19-15297982;