7-150993940-T-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_000603.5(NOS3):c.137T>G(p.Leu46Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000007 in 1,570,346 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000070 ( 0 hom. )

Consequence

NOS3
NM_000603.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.77

Variant links:

Genes affected

NOS3 (HGNC:7876): (nitric oxide synthase 3) Nitric oxide is a reactive free radical which acts as a biologic mediator in several processes, including neurotransmission and antimicrobial and antitumoral activities. Nitric oxide is synthesized from L-arginine by nitric oxide synthases. Variations in this gene are associated with susceptibility to coronary spasm. Alternative splicing and the use of alternative promoters results in multiple transcript variants. [provided by RefSeq, Oct 2016]

NOS3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06763622).

BS2

High AC in GnomAdExome4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOS3	NM_000603.5 link	c.137T>G	p.Leu46Arg	missense_variant	Exon 2 of 27	ENST00000297494.8	NP_000594.2	P29474-1
NOS3	NM_001160111.1 link	c.137T>G	p.Leu46Arg	missense_variant	Exon 1 of 14		NP_001153583.1	P29474-2
NOS3	NM_001160110.1 link	c.137T>G	p.Leu46Arg	missense_variant	Exon 1 of 14		NP_001153582.1	P29474-3
NOS3	NM_001160109.2 link	c.137T>G	p.Leu46Arg	missense_variant	Exon 1 of 14		NP_001153581.1	P29474A0S0A6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
NOS3	ENST00000297494.8 link	c.137T>G	p.Leu46Arg	missense_variant	Exon 2 of 27	1	NM_000603.5	ENSP00000297494.3	P29474-1
NOS3	ENST00000484524.5 link	c.137T>G	p.Leu46Arg	missense_variant	Exon 1 of 14	1		ENSP00000420215.1	P29474-2
NOS3	ENST00000467517.1 link	c.137T>G	p.Leu46Arg	missense_variant	Exon 1 of 14	1		ENSP00000420551.1	P29474-3
NOS3	ENST00000461406.5 link	c.-148-1263T>G		intron_variant	Intron 1 of 23	2		ENSP00000417143.1	E7ESA7

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151828

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00000570

AC:

AN:

175372

Hom.:

AF XY:

0.00

AC XY:

AN XY:

95496

show subpopulations

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:

0.0000138

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000705

AC:

AN:

1418518

Hom.:

Cov.:

AF XY:

0.00000570

AC XY:

AN XY:

702284

show subpopulations

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:

0.00000916

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151828

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74174

show subpopulations

Gnomad4 AFR

AF:

0.00

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

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 29, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.137T>G (p.L46R) alteration is located in exon 2 (coding exon 1) of the NOS3 gene. This alteration results from a T to G substitution at nucleotide position 137, causing the leucine (L) at amino acid position 46 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.058

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Benign

0.37

DEOGEN2

Benign

0.10

T;.;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.59

T;T;T

M_CAP

Benign

0.0076

MetaRNN

Benign

0.068

T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

0.0

N;N;N

PrimateAI

Uncertain

0.51

PROVEAN

Benign

0.030

N;N;N

REVEL

Benign

0.063

Sift

Benign

0.61

T;T;T

Sift4G

Benign

0.12

T;T;T

Polyphen

0.021

B;.;.

Vest4

0.14

MutPred

0.22

Gain of methylation at L46 (P = 0.0282);Gain of methylation at L46 (P = 0.0282);Gain of methylation at L46 (P = 0.0282);

MVP

0.37

MPC

0.092

ClinPred

0.022

GERP RS

3.5

Varity_R

0.050

gMVP

0.14

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