chr9-136523737-C-T

Position:

chr9-136523737-C-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The NM_017617.5(NOTCH1):c.383G>A(p.Arg128His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000404 in 1,609,062 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 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. R128C) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

NOTCH1
NM_017617.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 1.38

Variant links:

Genes affected

NOTCH1 (HGNC:7881): (notch receptor 1) This gene encodes a member of the NOTCH family of proteins. Members of this Type I transmembrane protein family share structural characteristics including an extracellular domain consisting of multiple epidermal growth factor-like (EGF) repeats, and an intracellular domain consisting of multiple different domain types. Notch signaling is an evolutionarily conserved intercellular signaling pathway that regulates interactions between physically adjacent cells through binding of Notch family receptors to their cognate ligands. The encoded preproprotein is proteolytically processed in the trans-Golgi network to generate two polypeptide chains that heterodimerize to form the mature cell-surface receptor. This receptor plays a role in the development of numerous cell and tissue types. Mutations in this gene are associated with aortic valve disease, Adams-Oliver syndrome, T-cell acute lymphoblastic leukemia, chronic lymphocytic leukemia, and head and neck squamous cell carcinoma. [provided by RefSeq, Jan 2016]

NOTCH1 links:

LOC124902310 (HGNC:):

LOC124902310 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), NOTCH1. . Trascript score misZ 3.6761 (greater than threshold 3.09). GenCC has associacion of gene with familial bicuspid aortic valve, familial thoracic aortic aneurysm and aortic dissection, Adams-Oliver syndrome, connective tissue disorder, Adams-Oliver syndrome 5, aortic valve disease 1.

BP4

Computational evidence support a benign effect (MetaRNN=0.22551471).

BS2

High AC in GnomAd4 at 27 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
NOTCH1	NM_017617.5 linkuse as main transcript	c.383G>A	p.Arg128His	missense_variant	3/34	ENST00000651671.1
LOC124902310	XR_007061865.1 linkuse as main transcript	n.623+304C>T		intron_variant, non_coding_transcript_variant
NOTCH1	XM_011518717.3 linkuse as main transcript	c.20-4172G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NOTCH1	ENST00000651671.1 linkuse as main transcript	c.383G>A	p.Arg128His	missense_variant	3/34		NM_017617.5	P1

Frequencies

GnomAD3 genomes

AF:

0.000164

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000579

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000753

AC:

AN:

239062

Hom.:

AF XY:

0.0000764

AC XY:

AN XY:

130846

show subpopulations

Gnomad AFR exome

AF:

0.000696

Gnomad AMR exome

AF:

0.0000591

Gnomad ASJ exome

AF:

0.000103

Gnomad EAS exome

AF:

0.0000569

Gnomad SAS exome

AF:

0.0000335

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000279

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000261

AC:

AN:

1456728

Hom.:

Cov.:

AF XY:

0.0000221

AC XY:

AN XY:

724466

show subpopulations

Gnomad4 AFR exome

AF:

0.000718

Gnomad4 AMR exome

AF:

0.0000676

Gnomad4 ASJ exome

AF:

0.0000385

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000720

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000177

AC:

AN:

152334

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.000625

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000162

ExAC

AF:

0.0000752

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Adams-Oliver syndrome 5

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Mar 15, 2022	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 18, 2024	- -

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 28, 2024

The p.R128H variant (also known as c.383G>A), located in coding exon 3 of the NOTCH1 gene, results from a G to A substitution at nucleotide position 383. The arginine at codon 128 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Aug 16, 2018

A variant of uncertain significance has been identified in the NOTCH1 gene. The R128H variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. This variant was not observed in approximately 6,300 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. However, the R128H variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. This substitution occurs at a position that is not conserved across species and where histidine is the wild type in several species. Finally, in silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. -

Aortic valve disease 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Mar 15, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.63

Eigen

Benign

-0.53

Eigen_PC

Benign

-0.37

FATHMM_MKL

Benign

0.68

LIST_S2

Uncertain

0.90

M_CAP

Uncertain

0.099

MetaRNN

Benign

0.23

MetaSVM

Benign

-0.77

MutationAssessor

Benign

0.53

MutationTaster

Benign

1.0

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.5

REVEL

Benign

0.21

Sift

Benign

0.13

Sift4G

Benign

0.12

Polyphen

0.041

Vest4

0.22

MVP

0.74

MPC

0.49

ClinPred

0.017

GERP RS

2.3

Varity_R

0.073

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over