6-3016950-A-G

Position:

chr6-3016950-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_000904.6(NQO2):c.484A>G(p.Asn162Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000508 in 1,613,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

NQO2
NM_000904.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.07

Variant links:

Genes affected

NQO2 (HGNC:7856): (N-ribosyldihydronicotinamide:quinone dehydrogenase 2) This gene encodes a member of the thioredoxin family of enzymes. It is a cytosolic and ubiquitously expressed flavoprotein that catalyzes the two-electron reduction of quinone substrates and uses dihydronicotinamide riboside as a reducing coenzyme. Mutations in this gene have been associated with neurodegenerative diseases and several cancers. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2014]

NQO2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1

In a mutagenesis_site Loss of activity toward CB1954, no effect toward menadione. (size 0) in uniprot entity NQO2_HUMAN

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1734227).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
NQO2	NM_000904.6 linkuse as main transcript	c.484A>G	p.Asn162Asp	missense_variant	6/7	ENST00000380455.11	NP_000895.2
NQO2	NM_001290221.2 linkuse as main transcript	c.484A>G	p.Asn162Asp	missense_variant	9/10		NP_001277150.1
NQO2	NM_001318940.2 linkuse as main transcript	c.484A>G	p.Asn162Asp	missense_variant	6/7		NP_001305869.1
NQO2	NM_001290222.2 linkuse as main transcript	c.370A>G	p.Asn124Asp	missense_variant	5/6		NP_001277151.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NQO2	ENST00000380455.11 linkuse as main transcript	c.484A>G	p.Asn162Asp	missense_variant	6/7	1	NM_000904.6	ENSP00000369822	P1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152176

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:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000477

AC:

AN:

251334

Hom.:

AF XY:

0.0000515

AC XY:

AN XY:

135856

show subpopulations

Gnomad AFR exome

AF:

0.0000615

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:

0.0000879

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000499

AC:

AN:

1461788

Hom.:

Cov.:

AF XY:

0.0000468

AC XY:

AN XY:

727188

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.0000629

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74342

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:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000106

Hom.:

Bravo

AF:

0.0000453

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 05, 2023

The c.484A>G (p.N162D) alteration is located in exon 6 (coding exon 5) of the NQO2 gene. This alteration results from a A to G substitution at nucleotide position 484, causing the asparagine (N) at amino acid position 162 to be replaced by an aspartic acid (D). 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

Uncertain

0.36

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.65

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.22

T;.;T;.;T

Eigen

Benign

-0.57

Eigen_PC

Benign

-0.59

FATHMM_MKL

Benign

0.35

LIST_S2

Benign

0.61

.;.;.;T;T

M_CAP

Benign

0.0060

MetaRNN

Benign

0.17

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

2.0

M;.;M;.;M

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

-2.2

N;D;N;D;N

REVEL

Benign

0.098

Sift

Benign

0.21

T;T;T;T;T

Sift4G

Benign

0.18

T;T;T;T;T

Polyphen

0.0

B;.;B;.;B

Vest4

0.15

MutPred

0.59

Loss of catalytic residue at N162 (P = 0.0099);.;Loss of catalytic residue at N162 (P = 0.0099);.;Loss of catalytic residue at N162 (P = 0.0099);

MVP

0.35

MPC

0.10

ClinPred

0.11

GERP RS

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.41

gMVP

0.76

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