Variant 6-3015626-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000904.6(NQO2):c.400G>A(p.Asp134Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000149 in 1,614,042 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

NQO2
NM_000904.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.08

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 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28085208).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
NQO2	NM_000904.6 linkuse as main transcript	c.400G>A	p.Asp134Asn	missense_variant	5/7	ENST00000380455.11	NP_000895.2
NQO2	NM_001290221.2 linkuse as main transcript	c.400G>A	p.Asp134Asn	missense_variant	8/10		NP_001277150.1
NQO2	NM_001318940.2 linkuse as main transcript	c.400G>A	p.Asp134Asn	missense_variant	5/7		NP_001305869.1
NQO2	NM_001290222.2 linkuse as main transcript	c.304-1258G>A		intron_variant			NP_001277151.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NQO2	ENST00000380455.11 linkuse as main transcript	c.400G>A	p.Asp134Asn	missense_variant	5/7	1	NM_000904.6	ENSP00000369822	P1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152208

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000398

AC:

AN:

251348

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135874

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:

0.000294

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000157

AC:

AN:

1461834

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

727236

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:

0.000209

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74358

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:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000330

AC:

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

Jun 28, 2023

The c.400G>A (p.D134N) alteration is located in exon 5 (coding exon 4) of the NQO2 gene. This alteration results from a G to A substitution at nucleotide position 400, causing the aspartic acid (D) at amino acid position 134 to be replaced by an asparagine (N). 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

0.16

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.20

.;.;T;T;T

Eigen

Benign

-0.11

Eigen_PC

Benign

-0.16

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.78

.;T;.;.;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.28

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.3

.;.;M;M;M

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-3.3

D;D;D;D;D

REVEL

Benign

0.18

Sift

Benign

0.13

T;T;T;T;T

Sift4G

Benign

0.094

T;T;T;T;T

Polyphen

0.72

.;.;P;P;P

Vest4

0.30

MutPred

0.53

Loss of glycosylation at S135 (P = 0.1792);Loss of glycosylation at S135 (P = 0.1792);Loss of glycosylation at S135 (P = 0.1792);Loss of glycosylation at S135 (P = 0.1792);Loss of glycosylation at S135 (P = 0.1792);

MVP

0.40

MPC

0.44

ClinPred

0.67

GERP RS

4.8

Varity_R

0.40

gMVP

0.71

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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