chr19-15174252-G-A

Variant names:

• chr19-15174252-G-A
• rs141320511
• NM_000435.3:c.4552C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000435.3(NOTCH3):​c.4552C>T​(p.Leu1518Leu) variant causes a synonymous change. The variant allele was found at a frequency of 0.000000698 in 1,433,542 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: not found (cov: 32)
  • Exomes 𝑓: 7.0e-7 (0 hom.)
• Consequence: NOTCH3 NM_000435.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.81
• Publications: 25 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: 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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.42).

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NOTCH3	NM_000435.3	MANE Select	c.4552C>T	p.Leu1518Leu	synonymous	Exon 25 of 33	NP_000426.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NOTCH3	ENST00000263388.7	TSL:1 MANE Select	c.4552C>T	p.Leu1518Leu	synonymous	Exon 25 of 33	ENSP00000263388.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000513 AC: 1 AN: 195106 AF XY: 0.00000930

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: 0.0000706

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.98e-7 AC: 1 AN: 1433542 Hom.: 0 Cov.: 37 AF XY: 0.00000140 AC XY: 1 AN XY: 711922

African (AFR) AF: 0.00 AC: 0 AN: 32838

American (AMR) AF: 0.00 AC: 0 AN: 40530

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25700

East Asian (EAS) AF: 0.00 AC: 0 AN: 38082

South Asian (SAS) AF: 0.00 AC: 0 AN: 84014

European-Finnish (FIN) AF: 0.0000215 AC: 1 AN: 46586

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5292

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1101160

Other (OTH) AF: 0.00 AC: 0 AN: 59340

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.42
CADD	Benign	12
DANN	Benign	0.85
PhyloP100		4.8

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs141320511; hg19: chr19-15285063;