Variant chr4-40102307-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018177.6(N4BP2):c.462C>G(p.Asn154Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,860 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N154I) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

N4BP2
NM_018177.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.112

Variant links:

Genes affected

N4BP2 (HGNC:29851): (NEDD4 binding protein 2) This gene encodes a protein containing a polynucleotide kinase domain (PNK) near the N-terminal region, and a Small MutS Related (Smr) domain near the C-terminal region. The encoded protein can bind to both B-cell leukemia/lymphoma 3 (BCL-3) and neural precursor cell expressed, developmentally downregulated 4, (Nedd4) proteins. This protein binds and hydrolyzes ATP, may function as a 5'-polynucleotide kinase, and has the capacity to be a ubiquitylation substrate. This protein may play a role in transcription-coupled DNA repair or genetic recombination. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2016]

N4BP2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.093622565).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
N4BP2	NM_018177.6 linkuse as main transcript	c.462C>G	p.Asn154Lys	missense_variant	4/18	ENST00000261435.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
N4BP2	ENST00000261435.11 linkuse as main transcript	c.462C>G	p.Asn154Lys	missense_variant	4/18	5	NM_018177.6	P1	Q86UW6-1
N4BP2	ENST00000511480.5 linkuse as main transcript	c.*253C>G		3_prime_UTR_variant, NMD_transcript_variant	5/19	1
N4BP2	ENST00000515550.1 linkuse as main transcript	c.222C>G	p.Asn74Lys	missense_variant	3/3	3
N4BP2	ENST00000706658.1 linkuse as main transcript	c.*253C>G		3_prime_UTR_variant, NMD_transcript_variant	7/21

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250476

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135452

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:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460860

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726738

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 20, 2023

The c.462C>G (p.N154K) alteration is located in exon 4 (coding exon 2) of the N4BP2 gene. This alteration results from a C to G substitution at nucleotide position 462, causing the asparagine (N) at amino acid position 154 to be replaced by a lysine (K). 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

0.25

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0052

T;.

Eigen

Benign

-0.32

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.29

LIST_S2

Benign

0.74

T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.094

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.1

M;.

MutationTaster

Benign

1.0

PrimateAI

Benign

0.42

PROVEAN

Benign

0.18

N;D

REVEL

Benign

0.022

Sift

Uncertain

0.014

D;D

Sift4G

Benign

0.13

T;D

Polyphen

0.14

B;.

Vest4

0.30

MutPred

0.15

Gain of ubiquitination at N154 (P = 0.0014);.;

MVP

0.55

MPC

0.21

ClinPred

0.11

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.085

gMVP

0.29

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