21-33241936-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001289125.3(IFNAR2):c.14A>G(p.Gln5Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,560 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

IFNAR2
NM_001289125.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.310

Variant links:

Genes affected

IFNAR2 (HGNC:5433): (interferon alpha and beta receptor subunit 2) 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. Mutations in this gene are associated with Immunodeficiency 45. [provided by RefSeq, Jul 2020]

IFNAR2 links:

IFNAR2-IL10RB (HGNC:):

IFNAR2-IL10RB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.036999345).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IFNAR2	NM_001289125.3 linkuse as main transcript	c.14A>G	p.Gln5Arg	missense_variant	2/9	ENST00000342136.9
IFNAR2-IL10RB	NM_001414505.1 linkuse as main transcript	c.14A>G	p.Gln5Arg	missense_variant	2/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IFNAR2	ENST00000342136.9 linkuse as main transcript	c.14A>G	p.Gln5Arg	missense_variant	2/9	1	NM_001289125.3	P2	P48551-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000200

AC:

AN:

250602

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135472

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000146

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.00000411

AC:

AN:

1460560

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726684

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000330

AC:

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

Invitae

Jul 26, 2022

This variant is present in population databases (rs762005656, gnomAD 0.02%). This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 5 of the IFNAR2 protein (p.Gln5Arg). This variant has not been reported in the literature in individuals affected with IFNAR2-related conditions. 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. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The arginine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.68

Cadd

Benign

7.1

Dann

Benign

0.84

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.011

M_CAP

Benign

0.0017

MetaRNN

Benign

0.037

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;L;L;L;.

MutationTaster

Benign

1.0

N;N;N;N;N;N

PrimateAI

Benign

0.25

PROVEAN

Benign

-1.0

N;N;N;N;N

REVEL

Benign

0.020

Sift

Benign

0.44

T;T;T;T;T

Sift4G

Benign

0.59

T;T;T;T;T

Polyphen

0.017

B;B;B;B;.

Vest4

0.13

MutPred

0.32

Gain of MoRF binding (P = 0.0068);Gain of MoRF binding (P = 0.0068);Gain of MoRF binding (P = 0.0068);Gain of MoRF binding (P = 0.0068);.;

MVP

0.26

MPC

0.044

ClinPred

0.065

GERP RS

-4.2

Varity_R

0.085

gMVP

0.41

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

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.

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