Genetic Variant NADK:p.Ala253Thr (chr1-1757129-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001198994.2(NADK):c.757G>A(p.Ala253Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000179 in 1,540,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00019 ( 0 hom. )

Consequence

NADK
NM_001198994.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.56

Variant links:

Genes affected

NADK (HGNC:29831): (NAD kinase) NADK catalyzes the transfer of a phosphate group from ATP to NAD to generate NADP, which in its reduced form acts as an electron donor for biosynthetic reactions (Lerner et al., 2001 [PubMed 11594753]).[supplied by OMIM, Mar 2008]

NADK links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.056464046).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NADK	NM_023018.5 link	c.393+52G>A		intron_variant	Intron 4 of 11	ENST00000341426.9	NP_075394.3	O95544-1A0A024R058

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NADK	ENST00000341426.9 link	c.393+52G>A		intron_variant	Intron 4 of 11	2	NM_023018.5	ENSP00000341679.5		O95544-1

Frequencies

GnomAD3 genomes

AF:

0.0000922

AC:

AN:

151906

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000484

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000711

AC:

AN:

154624

Hom.:

AF XY:

0.0000599

AC XY:

AN XY:

83482

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000397

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:

0.000169

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000188

AC:

261

AN:

1388684

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

120

AN XY:

684982

show subpopulations

Gnomad4 AFR exome

AF:

0.0000317

Gnomad4 AMR exome

AF:

0.000111

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000126

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000228

Gnomad4 OTH exome

AF:

0.000191

GnomAD4 genome

AF:

0.0000922

AC:

AN:

151906

Hom.:

Cov.:

AF XY:

0.0000809

AC XY:

AN XY:

74162

show subpopulations

Gnomad4 AFR

AF:

0.0000484

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000652

Hom.:

Bravo

AF:

0.000162

ExAC

AF:

0.000159

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.757G>A (p.A253T) alteration is located in exon 6 (coding exon 5) of the NADK gene. This alteration results from a G to A substitution at nucleotide position 757, causing the alanine (A) at amino acid position 253 to be replaced by a threonine (T). 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

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.71

CADD

Benign

0.46

DANN

Benign

0.68

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.0020

LIST_S2

Benign

0.26

M_CAP

Benign

0.0030

MetaRNN

Benign

0.056

MetaSVM

Benign

-1.1

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.070

REVEL

Benign

0.019

Sift

Benign

0.22

Sift4G

Benign

0.74

Vest4

0.23

MVP

0.048

ClinPred

0.017

GERP RS

-1.5

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.0

gMVP

0.16

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