rs79312013

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000631.5(NCF4):​c.343-4A>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00308 in 1,613,768 control chromosomes in the GnomAD database, including 20 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0033 ( 4 hom., cov: 32)
Exomes 𝑓: 0.0031 ( 16 hom. )

Consequence

NCF4
NM_000631.5 splice_region, intron

Scores

2
Splicing: ADA: 0.0005640
2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -1.50
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.82).
BP6
Variant 22-36870411-A-G is Benign according to our data. Variant chr22-36870411-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 471812.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-36870411-A-G is described in Lovd as [Likely_benign].
BS1
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00329 (501/152204) while in subpopulation NFE AF= 0.0036 (245/68000). AF 95% confidence interval is 0.00323. There are 4 homozygotes in gnomad4. There are 300 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
NCF4NM_000631.5 linkuse as main transcriptc.343-4A>G splice_region_variant, intron_variant ENST00000248899.11 NP_000622.2 Q15080-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
NCF4ENST00000248899.11 linkuse as main transcriptc.343-4A>G splice_region_variant, intron_variant 1 NM_000631.5 ENSP00000248899.6 Q15080-1

Frequencies

GnomAD3 genomes
AF:
0.00329
AC:
501
AN:
152086
Hom.:
4
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000411
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00131
Gnomad ASJ
AF:
0.00403
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000621
Gnomad FIN
AF:
0.0189
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00360
Gnomad OTH
AF:
0.000957
GnomAD3 exomes
AF:
0.00308
AC:
774
AN:
251056
Hom.:
6
AF XY:
0.00309
AC XY:
419
AN XY:
135728
show subpopulations
Gnomad AFR exome
AF:
0.000246
Gnomad AMR exome
AF:
0.000954
Gnomad ASJ exome
AF:
0.00744
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000327
Gnomad FIN exome
AF:
0.0169
Gnomad NFE exome
AF:
0.00246
Gnomad OTH exome
AF:
0.00196
GnomAD4 exome
AF:
0.00305
AC:
4464
AN:
1461564
Hom.:
16
Cov.:
32
AF XY:
0.00303
AC XY:
2203
AN XY:
727088
show subpopulations
Gnomad4 AFR exome
AF:
0.000508
Gnomad4 AMR exome
AF:
0.00119
Gnomad4 ASJ exome
AF:
0.00731
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000441
Gnomad4 FIN exome
AF:
0.0155
Gnomad4 NFE exome
AF:
0.00287
Gnomad4 OTH exome
AF:
0.00245
GnomAD4 genome
AF:
0.00329
AC:
501
AN:
152204
Hom.:
4
Cov.:
32
AF XY:
0.00403
AC XY:
300
AN XY:
74420
show subpopulations
Gnomad4 AFR
AF:
0.000409
Gnomad4 AMR
AF:
0.00131
Gnomad4 ASJ
AF:
0.00403
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000622
Gnomad4 FIN
AF:
0.0189
Gnomad4 NFE
AF:
0.00360
Gnomad4 OTH
AF:
0.000947
Alfa
AF:
0.00287
Hom.:
3
Bravo
AF:
0.00190
Asia WGS
AF:
0.000577
AC:
2
AN:
3478
EpiCase
AF:
0.00256
EpiControl
AF:
0.00296

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:3
Likely benign, criteria provided, single submitterclinical testingGeneDxMay 05, 2021See Variant Classification Assertion Criteria. -
Likely benign, no assertion criteria providedclinical testingGenome Diagnostics Laboratory, University Medical Center Utrecht-- -
Likely benign, no assertion criteria providedclinical testingClinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center-- -
Granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 3 Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 29, 2024- -
NCF4-related disorder Benign:1
Benign, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesOct 02, 2019This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.82
CADD
Benign
0.055
DANN
Benign
0.59

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.00056
dbscSNV1_RF
Benign
0.10
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.

Other links and lift over

dbSNP: rs79312013; hg19: chr22-37266453; API