22-36861194-G-A

Position:

chr22-36861194-G-A

Variant summary

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

The NM_000631.5(NCF4):c.23G>A(p.Arg8Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000413 in 1,551,478 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

NCF4
NM_000631.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.95

Variant links:

Genes affected

NCF4 (HGNC:7662): (neutrophil cytosolic factor 4) The protein encoded by this gene is a cytosolic regulatory component of the superoxide-producing phagocyte NADPH-oxidase, a multicomponent enzyme system important for host defense. This protein is preferentially expressed in cells of myeloid lineage. It interacts primarily with neutrophil cytosolic factor 2 (NCF2/p67-phox) to form a complex with neutrophil cytosolic factor 1 (NCF1/p47-phox), which further interacts with the small G protein RAC1 and translocates to the membrane upon cell stimulation. This complex then activates flavocytochrome b, the membrane-integrated catalytic core of the enzyme system. The PX domain of this protein can bind phospholipid products of the PI(3) kinase, which suggests its role in PI(3) kinase-mediated signaling events. The phosphorylation of this protein was found to negatively regulate the enzyme activity. Alternatively spliced transcript variants encoding distinct isoforms have been observed. [provided by RefSeq, Jul 2008]

NCF4 links:

NCF4-AS1 (HGNC:40393): (NCF4 antisense RNA 1)

NCF4-AS1 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=0.29182732).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
NCF4	NM_000631.5 linkuse as main transcript	c.23G>A	p.Arg8Gln	missense_variant	1/10	ENST00000248899.11	NP_000622.2
NCF4-AS1	NR_147197.1 linkuse as main transcript	n.351+8899C>T		intron_variant, non_coding_transcript_variant
NCF4	NM_013416.4 linkuse as main transcript	c.23G>A	p.Arg8Gln	missense_variant	1/9		NP_038202.2
NCF4	XM_047441385.1 linkuse as main transcript			upstream_gene_variant			XP_047297341.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NCF4	ENST00000248899.11 linkuse as main transcript	c.23G>A	p.Arg8Gln	missense_variant	1/10	1	NM_000631.5	ENSP00000248899	P1	Q15080-1
NCF4-AS1	ENST00000619915.1 linkuse as main transcript	n.349+8899C>T		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000521

AC:

AN:

153414

Hom.:

AF XY:

0.0000738

AC XY:

AN XY:

81332

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000219

Gnomad FIN exome

AF:

0.0000652

Gnomad NFE exome

AF:

0.0000171

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000400

AC:

AN:

1399142

Hom.:

Cov.:

AF XY:

0.0000420

AC XY:

AN XY:

690092

show subpopulations

Gnomad4 AFR exome

AF:

0.0000633

Gnomad4 AMR exome

AF:

0.0000280

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000126

Gnomad4 FIN exome

AF:

0.0000406

Gnomad4 NFE exome

AF:

0.0000352

Gnomad4 OTH exome

AF:

0.0000517

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152336

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74492

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000182

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 3

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 15, 2023

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬† is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 1499091). This variant has not been reported in the literature in individuals affected with NCF4-related conditions. This variant is present in population databases (rs762576326, gnomAD 0.02%). This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 8 of the NCF4 protein (p.Arg8Gln). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.54

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.36

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.25

T;.

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.022

MetaRNN

Benign

0.29

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

2.0

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-1.1

N;N

REVEL

Benign

0.12

Sift

Uncertain

0.0070

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.38

MutPred

0.27

Gain of helix (P = 0.0425);Gain of helix (P = 0.0425);

MVP

0.80

MPC

0.32

ClinPred

0.34

GERP RS

3.8

Varity_R

0.52

gMVP

0.73

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