Variant chr21-33325119-TCCGCAG-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PM4

The ENST00000270139.8(IFNAR1):c.71_76delCCGCAG(p.Ala24_Ala25del) variant causes a disruptive inframe deletion, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000856 in 1,611,284 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A24A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000087 ( 0 hom. )

Consequence

IFNAR1
ENST00000270139.8 disruptive_inframe_deletion, splice_region

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.72

Variant links:

Genes affected

IFNAR1 (HGNC:5432): (interferon alpha and beta receptor subunit 1) The protein encoded by this gene is a type I membrane protein that forms one of the two chains of a receptor for interferons alpha and beta. Binding and activation of the receptor stimulates Janus protein kinases, which in turn phosphorylate several proteins, including STAT1 and STAT2. The protein belongs to the type II cytokine receptor family and functions as an antiviral factor. [provided by RefSeq, Jul 2020]

IFNAR1 links:

IFNAR1 (HGNC:):

IFNAR1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM4

Nonframeshift variant in NON repetitive region in ENST00000270139.8.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IFNAR1	NM_000629.3 linkuse as main transcript	c.71_76delCCGCAG	p.Ala24_Ala25del	disruptive_inframe_deletion, splice_region_variant	1/11	ENST00000270139.8	NP_000620.2	P17181-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IFNAR1	ENST00000270139.8 linkuse as main transcript	c.71_76delCCGCAG	p.Ala24_Ala25del	disruptive_inframe_deletion, splice_region_variant	1/11	1	NM_000629.3	ENSP00000270139.3		P17181-1

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152056

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000534

AC:

AN:

243414

Hom.:

AF XY:

0.0000226

AC XY:

AN XY:

132716

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000293

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000330

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000101

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000870

AC:

127

AN:

1459228

Hom.:

AF XY:

0.0000744

AC XY:

AN XY:

725900

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000190

Gnomad4 NFE exome

AF:

0.000107

Gnomad4 OTH exome

AF:

0.0000664

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152056

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74262

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000756

EpiCase

AF:

0.000164

EpiControl

AF:

0.000179

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 13, 2023

This variant, c.71_76del, results in the deletion of 2 amino acid(s) of the IFNAR1 protein (p.Ala24_Ala25del), but otherwise preserves the integrity of the reading frame. This variant is present in population databases (rs767512505, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with IFNAR1-related conditions. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over