chr22-36867434-G-A

Position:

chr22-36867434-G-A

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The ENST00000248899.11(NCF4):c.314G>A(p.Arg105Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000018 in 1,614,046 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R105W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

NCF4
ENST00000248899.11 missense

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3O:1

Conservation

PhyloP100: 7.97

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 Pathogenic. Variant got 14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.969

PP5

Variant 22-36867434-G-A is Pathogenic according to our data. Variant chr22-36867434-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 30194.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-36867434-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NCF4	NM_000631.5 linkuse as main transcript	c.314G>A	p.Arg105Gln	missense_variant	4/10	ENST00000248899.11	NP_000622.2
NCF4-AS1	NR_147197.1 linkuse as main transcript	n.351+2659C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NCF4	ENST00000248899.11 linkuse as main transcript	c.314G>A	p.Arg105Gln	missense_variant	4/10	1	NM_000631.5	ENSP00000248899	P1	Q15080-1
NCF4-AS1	ENST00000619915.1 linkuse as main transcript	n.349+2659C>T		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000278

AC:

AN:

251406

Hom.:

AF XY:

0.0000441

AC XY:

AN XY:

135902

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:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1461876

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727244

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:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000144

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74330

show subpopulations

Gnomad4 AFR

AF:

0.0000965

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000277

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

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

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 25, 2022	For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects NCF4 function (PMID: 19692703, 29969437). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 30194). This missense change has been observed in individual(s) with chronic granulomatous disease and/or symptoms of chronic granulomatous disease (PMID: 19692703, 29969437). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. This variant is present in population databases (rs387906808, gnomAD 0.008%). This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 105 of the NCF4 protein (p.Arg105Gln). -
Pathogenic, no assertion criteria provided	literature only	OMIM	Oct 08, 2009	- -

Chronic granulomatous disease

Pathogenic:1Other:1

not provided, no classification provided	literature only	GeneReviews	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Jun 21, 2023	Variant summary: NCF4 c.314G>A (p.Arg105Gln) results in a conservative amino acid change located in the Phox homology domain (IPR001683) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2.8e-05 in 251406 control chromosomes. c.314G>A has been reported in the literature in both compound heterozygous and homozygous individuals affected with Chronic Granulomatous Disease (e.g., Matute_2009, vandeGeer_2018), and the variant was shown to segregate with disease in related individuals. These data indicate that the variant is very likely to be associated with disease. At least two publications report experimental evidence evaluating an impact on protein function, finding that the variant results in greatly reduced intracellular NADPH oxidase activity in vitro (e.g., Matute_2009, vandeGeer_2018), although the effect of the variant on NADPH oxidase activity in homozygous patient cells was variable depending on the stimulus (e.g., vandeGeer_2018). The following publications have been ascertained in the context of this evaluation (PMID: 19692703, 29969437). One submitter has reported clinical-significance assessments for this variant to ClinVar after 2014 and classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.75

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Pathogenic

0.23

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.075

T;D;.

Eigen

Pathogenic

0.78

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.97

D;D;D

MetaSVM

Pathogenic

0.97

MutationAssessor

Pathogenic

3.5

.;M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.1

N;D;D

REVEL

Pathogenic

0.68

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

.;D;.

Vest4

0.93, 0.82

MutPred

0.89

.;Gain of loop (P = 0.069);Gain of loop (P = 0.069);

MVP

0.94

MPC

0.76

ClinPred

0.97

GERP RS

4.6

Varity_R

0.89

gMVP

0.90

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