Genetic Variant IRF8:c.-220_-219insGGC (chr16-85902796-T-TGGC) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_002163.4(IRF8):c.-1-219_-1-218insGGC variant causes a intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 0)

Exomes 𝑓: 0.0000066 ( 0 hom. )

Consequence

IRF8
NM_002163.4 intron

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.00

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: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
IRF8	NM_002163.4 link	c.-1-219_-1-218insGGC	intron_variant	Intron 1 of 8	ENST00000268638.10	NP_002154.1	Q02556
IRF8	XM_047434052.1 link	c.-65_-64insGGC	5_prime_UTR_variant	Exon 2 of 10		XP_047290008.1
IRF8	NM_001363907.1 link	c.-65_-64insGGC	upstream_gene_variant			NP_001350836.1
IRF8	NM_001363908.1 link	c.-726_-725insGGC	upstream_gene_variant			NP_001350837.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IRF8	ENST00000268638.10 link	c.-1-219_-1-218insGGC		intron_variant	Intron 1 of 8	1	NM_002163.4	ENSP00000268638.4		Q02556

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151474

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000730

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000663

AC:

AN:

452722

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

241056

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000769

AC:

AN:

12998

American (AMR)

AF:

0.00

AC:

AN:

24430

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14308

East Asian (EAS)

AF:

0.00

AC:

AN:

29450

South Asian (SAS)

AF:

0.00

AC:

AN:

48834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

27244

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1936

European-Non Finnish (NFE)

AF:

0.00000747

AC:

AN:

267804

Other (OTH)

AF:

0.00

AC:

AN:

25718

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000065), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.292

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151474

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73998

show subpopulations

African (AFR)

AF:

0.0000730

AC:

AN:

41098

American (AMR)

AF:

0.00

AC:

AN:

15222

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5158

South Asian (SAS)

AF:

0.00

AC:

AN:

4804

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10582

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67838

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.0

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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chr16-85902796-T-TGGC

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over