Genetic Variant NM_000625.4:c.3330C>T (chr17-27758905-G-A) – ACMG Classification: Benign (-21 pts)

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000625.4(NOS2):c.3330C>T(p.Val1110Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00221 in 1,606,666 control chromosomes in the GnomAD database, including 59 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.012 ( 30 hom., cov: 33)

Exomes 𝑓: 0.0012 ( 29 hom. )

Consequence

NOS2
NM_000625.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -1.34

Variant links:

Genes affected

NOS2 (HGNC:7873): (nitric oxide synthase 2) Nitric oxide is a reactive free radical which acts as a biologic mediator in several processes, including neurotransmission and antimicrobial and antitumoral activities. This gene encodes a nitric oxide synthase which is expressed in liver and is inducible by a combination of lipopolysaccharide and certain cytokines. Three related pseudogenes are located within the Smith-Magenis syndrome region on chromosome 17. [provided by RefSeq, Jul 2008]

NOS2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.95).

BP6

Variant 17-27758905-G-A is Benign according to our data. Variant chr17-27758905-G-A is described in ClinVar as [Benign]. Clinvar id is 710107.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-1.34 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0119 (1814/152322) while in subpopulation AFR AF= 0.041 (1703/41582). AF 95% confidence interval is 0.0393. There are 30 homozygotes in gnomad4. There are 852 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 30 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOS2	NM_000625.4 link	c.3330C>T	p.Val1110Val	synonymous_variant	Exon 26 of 27	ENST00000313735.11	NP_000616.3	P35228-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOS2	ENST00000313735.11 link	c.3330C>T	p.Val1110Val	synonymous_variant	Exon 26 of 27	1	NM_000625.4	ENSP00000327251.6		P35228-1

Frequencies

GnomAD3 genomes

AF:

0.0119

AC:

1808

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0409

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00543

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000828

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00526

GnomAD3 exomes

AF:

0.00285

AC:

693

AN:

242800

Hom.:

AF XY:

0.00208

AC XY:

273

AN XY:

131506

show subpopulations

Gnomad AFR exome

AF:

0.0383

Gnomad AMR exome

AF:

0.00197

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000338

Gnomad FIN exome

AF:

0.0000471

Gnomad NFE exome

AF:

0.000119

Gnomad OTH exome

AF:

0.00103

GnomAD4 exome

AF:

0.00119

AC:

1735

AN:

1454344

Hom.:

Cov.:

AF XY:

0.00105

AC XY:

760

AN XY:

723294

show subpopulations

Gnomad4 AFR exome

AF:

0.0402

Gnomad4 AMR exome

AF:

0.00193

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000117

Gnomad4 FIN exome

AF:

0.0000379

Gnomad4 NFE exome

AF:

0.000105

Gnomad4 OTH exome

AF:

0.00288

GnomAD4 genome

AF:

0.0119

AC:

1814

AN:

152322

Hom.:

Cov.:

AF XY:

0.0114

AC XY:

852

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.0410

Gnomad4 AMR

AF:

0.00542

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000622

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00521

Alfa

AF:

0.00567

Hom.:

Bravo

AF:

0.0130

Asia WGS

AF:

0.00346

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Dec 31, 2019

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

NOS2-related disorder

Benign:1

Sep 17, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.95

CADD

Benign

0.21

DANN

Benign

0.90

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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