X-154564361-GC-GCC

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1_Strong PP5_Very_Strong

The NM_001099857.5(IKBKG):c.1167dup(p.Glu390ArgfsTer5) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency: Genomes: not found (cov: 0)
• Consequence: IKBKG NM_001099857.5 frameshift
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:6 O:1
• Conservation: PhyloP100: -0.0810

Genes affected

IKBKG (HGNC:5961): (inhibitor of nuclear factor kappa B kinase regulatory subunit gamma) This gene encodes the regulatory subunit of the inhibitor of kappaB kinase (IKK) complex, which activates NF-kappaB resulting in activation of genes involved in inflammation, immunity, cell survival, and other pathways. Mutations in this gene result in incontinentia pigmenti, hypohidrotic ectodermal dysplasia, and several other types of immunodeficiencies. A pseudogene highly similar to this locus is located in an adjacent region of the X chromosome. [provided by RefSeq, Mar 2016]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 13 pathogenic variants in the truncated region.
• PP5: Variant X-154564361-G-GC is Pathogenic according to our data. Variant chrX-154564361-G-GC is described in ClinVar as [Pathogenic]. Clinvar id is 372387.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IKBKG	NM_001099857.5	c.1167dup	p.Glu390ArgfsTer5	frameshift_variant	10/10	ENST00000594239.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IKBKG	ENST00000594239.6	c.1167dup	p.Glu390ArgfsTer5	frameshift_variant	10/10	1	NM_001099857.5	P3

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 0

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:6 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Incontinentia pigmenti syndrome Pathogenic:2 Other:1

Pathogenic, no assertion criteria provided	literature only	OMIM	Sep 01, 2001	- -
not provided, no classification provided	literature only	GeneReviews	-	- -
Pathogenic, criteria provided, single submitter	research	Department of Medical Genetics, College of Basic Medicine, Army Medical University	-	- -

Immunodeficiency 33 Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

Undiagnosed Diseases Network, NIH

May 10, 2023

- -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Dec 14, 2022

Published functional studies demonstrate a damaging effect on protein function (Ohnishi et al., 2017; Kawai et al., 2012); Frameshift variant in the C-terminus predicted to result in protein truncation, as the last 30 amino acids are lost and replaced with 4 incorrect amino acids; truncated region removes a portion of the zinc finger domain (HGMD); Not observed in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 22517901, 18350553, 11484156, 18347290, 30982207, 31713830, 32035679, 34061330, 11047757, 27577878, 18222329, 11179023, 28702714) -

Ectodermal dysplasia and immunodeficiency 1 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 01, 2001

- -

Incontinentia pigmenti syndrome;C1846008:Ectodermal dysplasia and immunodeficiency 1;C1970879:Immunodeficiency 33 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 27, 2021

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs782178147; hg19: chrX-153792576;