22-36877714-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000631.5(NCF4):c.911C>T(p.Ala304Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000109 in 1,461,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

NCF4
NM_000631.5 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: -2.23

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 3
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
chronic granulomatous disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

NCF4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.043212384).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
NCF4	NM_000631.5 link	c.911C>T	p.Ala304Val	missense_variant	Exon 10 of 10	ENST00000248899.11	NP_000622.2
NCF4	XM_047441384.1 link	c.1085C>T	p.Ala362Val	missense_variant	Exon 11 of 11		XP_047297340.1
NCF4	XM_047441385.1 link	c.1055C>T	p.Ala352Val	missense_variant	Exon 11 of 11		XP_047297341.1
NCF4	NM_013416.4 link	c.*109C>T		3_prime_UTR_variant	Exon 9 of 9		NP_038202.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NCF4	ENST00000248899.11 link	c.911C>T	p.Ala304Val	missense_variant	Exon 10 of 10	1	NM_000631.5	ENSP00000248899.6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000278

AC:

AN:

251404

AF XY:

0.0000368

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000109

AC:

AN:

1461878

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.0000224

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000104

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1112002

Other (OTH)

AF:

0.0000166

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

NCF4-related disorder

Uncertain:1

Jul 16, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The NCF4 c.911C>T variant is predicted to result in the amino acid substitution p.Ala304Val. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.016% of alleles in individuals of South Asian descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.087

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.76

CADD

Benign

0.028

(source)

DANN

Benign

0.82

DEOGEN2

Benign

0.10

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.012

LIST_S2

Benign

0.49

M_CAP

Benign

0.0041

MetaRNN

Benign

0.043

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.34

PhyloP100

-2.2

PrimateAI

Benign

0.23

PROVEAN

Benign

-0.51

REVEL

Benign

0.030

Sift

Benign

0.29

Sift4G

Benign

0.30

Polyphen

0.010

Vest4

0.024

MutPred

0.67

Loss of sheet (P = 0.0315);

MVP

0.37

ClinPred

0.020

GERP RS

-4.9

Varity_R

0.032

Mutation Taster

=94/6

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over