Genetic Variant IRF8:c.1104+8T>G (chr16-85920232-T-G) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_StrongBP6_Moderate

The NM_002163.4(IRF8):c.1104+8T>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 0.0000285 in 1,331,032 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

IRF8
NM_002163.4 splice_region, intron

Scores

Splicing: ADA: 0.00002150

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -2.61

Publications

0 publications found

Variant links:

Genes affected

IRF8 (HGNC:5358): (interferon regulatory factor 8) Interferon consensus sequence-binding protein (ICSBP) is a transcription factor of the interferon (IFN) regulatory factor (IRF) family. Proteins of this family are composed of a conserved DNA-binding domain in the N-terminal region and a divergent C-terminal region that serves as the regulatory domain. The IRF family proteins bind to the IFN-stimulated response element (ISRE) and regulate expression of genes stimulated by type I IFNs, namely IFN-alpha and IFN-beta. IRF family proteins also control expression of IFN-alpha and IFN-beta-regulated genes that are induced by viral infection. [provided by RefSeq, Jul 2008]

IRF8 Gene-Disease associations (from GenCC):

Mendelian susceptibility to mycobacterial diseases due to partial IRF8 deficiency
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, Illumina
immunodeficiency 32B
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Ambry Genetics

IRF8 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 16-85920232-T-G is Benign according to our data. Variant chr16-85920232-T-G is described in ClinVar as Likely_benign. ClinVar VariationId is 542150.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
IRF8	NM_002163.4 link	c.1104+8T>G	splice_region_variant, intron_variant	Intron 8 of 8	ENST00000268638.10	NP_002154.1	Q02556
IRF8	NM_001363907.1 link	c.1134+8T>G	splice_region_variant, intron_variant	Intron 8 of 8		NP_001350836.1
IRF8	NM_001363908.1 link	c.492+8T>G	splice_region_variant, intron_variant	Intron 6 of 6		NP_001350837.1
IRF8	XM_047434052.1 link	c.1134+8T>G	splice_region_variant, intron_variant	Intron 9 of 9		XP_047290008.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IRF8	ENST00000268638.10 link	c.1104+8T>G		splice_region_variant, intron_variant	Intron 8 of 8	1	NM_002163.4	ENSP00000268638.4		Q02556

Frequencies

GnomAD3 genomes

AF:

0.000170

AC:

AN:

147344

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000578

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000136

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000677

AC:

AN:

192154

AF XY:

0.0000672

show subpopulations

Gnomad AFR exome

AF:

0.00108

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000118

AC:

AN:

1183664

Hom.:

Cov.:

AF XY:

0.0000100

AC XY:

AN XY:

597616

show subpopulations

African (AFR)

AF:

0.000445

AC:

AN:

26984

American (AMR)

AF:

0.0000273

AC:

AN:

36680

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23372

East Asian (EAS)

AF:

0.00

AC:

AN:

37060

South Asian (SAS)

AF:

0.00

AC:

AN:

73056

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50966

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4814

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

880162

Other (OTH)

AF:

0.0000198

AC:

AN:

50570

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

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

AF:

0.000163

AC:

AN:

147368

Hom.:

Cov.:

AF XY:

0.000154

AC XY:

AN XY:

71642

show subpopulations

African (AFR)

AF:

0.000552

AC:

AN:

39876

American (AMR)

AF:

0.000136

AC:

AN:

14716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3440

East Asian (EAS)

AF:

0.00

AC:

AN:

5054

South Asian (SAS)

AF:

0.00

AC:

AN:

4646

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9258

Middle Eastern (MID)

AF:

0.00

AC:

AN:

278

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67176

Other (OTH)

AF:

0.00

AC:

AN:

2020

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.543

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000329

Hom.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Mendelian susceptibility to mycobacterial diseases due to partial IRF8 deficiency;C4751209:Immunodeficiency 32B

Benign:1

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

0.35

(source)

DANN

Benign

0.38

PhyloP100

-2.6

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000022

dbscSNV1_RF

Benign

0.0

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over