9-136513427-C-G

Position:

• chr9-136513427-C-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP2 BS2

The NM_017617.5(NOTCH1):​c.2318G>C​(p.Ser773Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000548 in 1,460,660 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: NOTCH1 NM_017617.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.67

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 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -3 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.
• BS2: High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NOTCH1	NM_017617.5	c.2318G>C	p.Ser773Thr	missense_variant	14/34	ENST00000651671.1	NP_060087.3
NOTCH1	XM_011518717.3	c.1595G>C	p.Ser532Thr	missense_variant	11/31		XP_011517019.2
LOC124902310	XR_007061865.1	n.507+3448C>G		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NOTCH1	ENST00000651671.1	c.2318G>C	p.Ser773Thr	missense_variant	14/34		NM_017617.5	ENSP00000498587.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000807 AC: 2 AN: 247978 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135086

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 SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000178

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000548 AC: 8 AN: 1460660 Hom.: 0 Cov.: 33 AF XY: 0.00000688 AC XY: 5 AN XY: 726618

Gnomad4 AFR exome AF: 0.00

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: 0.00000719

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000282 Hom.: 0

ExAC AF: 0.0000165 AC: 2

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Adams-Oliver syndrome 5 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 19, 2017

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with NOTCH1-related disease. This variant is present in population databases (rs758073507, ExAC 0.003%). This sequence change replaces serine with threonine at codon 773 of the NOTCH1 protein (p.Ser773Thr). The serine residue is highly conserved and there is a small physicochemical difference between serine and threonine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.058	T
BayesDel_noAF	Benign	-0.14
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.64	D
Eigen	Benign	0.18
Eigen_PC	Benign	0.18
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.72	T
M_CAP	Uncertain	0.24	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Uncertain	0.54	D
MutationAssessor	Benign	1.2	L
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-1.7	N
REVEL	Uncertain	0.60
Sift	Uncertain	0.014	D
Sift4G	Uncertain	0.051	T
Polyphen		0.74	P
Vest4		0.48
MutPred		0.66		Loss of sheet (P = 0.0457);
MVP		0.80
MPC		0.80
ClinPred		0.73	D
GERP RS		3.9
Varity_R		0.38

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

Other links and lift over

dbSNP: rs758073507; hg19: chr9-139407879;