rs200816814
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2PP3BP6
The NM_017617.5(NOTCH1):c.2218G>T(p.Asp740Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,698 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a benign 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. D740N) has been classified as Uncertain significance.
Frequency
Consequence
NM_017617.5 missense
Scores
Clinical Significance
Conservation
Publications
- Adams-Oliver syndromeInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Illumina, Orphanet
- Adams-Oliver syndrome 5Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
- aortic valve disease 1Inheritance: AD Classification: STRONG Submitted by: G2P, PanelApp Australia
- connective tissue disorderInheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
- leukodystrophyInheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- familial bicuspid aortic valveInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- familial thoracic aortic aneurysm and aortic dissectionInheritance: AD Classification: LIMITED Submitted by: ClinGen
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ACMG classification
Our verdict: Uncertain_significance. The variant received 2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt | 
|---|---|---|---|---|---|---|---|---|
| NOTCH1 | NM_017617.5 | c.2218G>T | p.Asp740Tyr | missense_variant | Exon 14 of 34 | ENST00000651671.1 | NP_060087.3 | |
| NOTCH1 | XM_011518717.3 | c.1495G>T | p.Asp499Tyr | missense_variant | Exon 11 of 31 | XP_011517019.2 | ||
| LOC124902310 | XR_007061865.1 | n.507+3548C>A | intron_variant | Intron 1 of 2 | 
Ensembl
Frequencies
GnomAD3 genomes  
GnomAD2 exomes  AF:  0.00000404  AC: 1AN: 247828 AF XY:  0.00000741   show subpopulations 
GnomAD4 exome  AF:  0.00000137  AC: 2AN: 1460698Hom.:  0  Cov.: 34 AF XY:  0.00000138  AC XY: 1AN XY: 726638 show subpopulations 
Age Distribution
GnomAD4 genome  
ClinVar
Submissions by phenotype
Familial thoracic aortic aneurysm and aortic dissection    Uncertain:1 
The p.D740Y variant (also known as c.2218G>T), located in coding exon 14 of the NOTCH1 gene, results from a G to T substitution at nucleotide position 2218. The aspartic acid at codon 740 is replaced by tyrosine, an amino acid with highly dissimilar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
not provided    Uncertain:1 
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis indicates that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Adams-Oliver syndrome 5    Benign:1 
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Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at