19-15185665-C-G

Variant names:

• chr19-15185665-C-G
• rs560752299
• NM_000435.3:c.1966G>C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000435.3(NOTCH3):​c.1966G>C​(p.Val656Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,128 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: NOTCH3 NM_000435.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.00900

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 Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2427701).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOTCH3	NM_000435.3	c.1966G>C	p.Val656Leu	missense_variant	Exon 13 of 33	ENST00000263388.7	NP_000426.2
NOTCH3	XM_005259924.5	c.1966G>C	p.Val656Leu	missense_variant	Exon 13 of 32		XP_005259981.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOTCH3	ENST00000263388.7	c.1966G>C	p.Val656Leu	missense_variant	Exon 13 of 33	1	NM_000435.3	ENSP00000263388.1
NOTCH3	ENST00000601011.1	c.1963G>C	p.Val655Leu	missense_variant	Exon 13 of 23	5		ENSP00000473138.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461128 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 726830

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Apr 21, 2020

Athena Diagnostics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Uncertain	0.091	D
BayesDel_noAF	Benign	-0.11
CADD	Benign	16
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	T;T
Eigen	Benign	-0.24
Eigen_PC	Benign	-0.13
FATHMM_MKL	Benign	0.58	D
LIST_S2	Benign	0.74	T;D
M_CAP	Benign	0.066	D
MetaRNN	Benign	0.24	T;T
MetaSVM	Uncertain	0.27	D
MutationAssessor	Benign	1.0	L;.
PrimateAI	Benign	0.45	T
PROVEAN	Benign	-1.8	N;.
REVEL	Uncertain	0.33
Sift	Benign	0.11	T;.
Sift4G	Benign	0.12	T;T
Polyphen		0.82	P;.
Vest4		0.48
MutPred		0.48		Gain of disorder (P = 0.2283);.;
MVP		0.96
MPC		0.50
ClinPred		0.35	T
GERP RS		5.1
Varity_R		0.13
gMVP		0.44

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs560752299; hg19: chr19-15296476;