rs575678322

Variant summary

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

The NM_022168.4(IFIH1):c.1243C>A(p.Gln415Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000397 in 1,612,072 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

IFIH1
NM_022168.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 9.34

Variant links:

Genes affected

IFIH1 (HGNC:18873): (interferon induced with helicase C domain 1) IFIH1 encodes MDA5 which is an intracellular sensor of viral RNA that triggers the innate immune response. Sensing RNA length and secondary structure, MDA5 binds dsRNA oligonucleotides with a modified DExD/H-box helicase core and a C-terminal domain, thus leading to a proinflammatory response that includes interferons. It has been shown that Coronaviruses (CoVs) as well as various other virus families, are capable of evading the MDA5-dependent interferon response, thus impeding the activation of the innate immune response to infection. MDA5 has also been shown to play an important role in enhancing natural killer cell function in malaria infection. In addition to its protective role in antiviral responses, MDA5 has been implicated in autoimmune and autoinflammatory diseases such as type 1 diabetes, systemic lupus erythematosus, and Aicardi-Goutieres syndrome[provided by RefSeq, Jul 2020]

IFIH1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IFIH1	NM_022168.4 linkuse as main transcript	c.1243C>A	p.Gln415Lys	missense_variant	6/16	ENST00000649979.2
IFIH1	XM_047445407.1 linkuse as main transcript	c.526C>A	p.Gln176Lys	missense_variant	5/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IFIH1	ENST00000649979.2 linkuse as main transcript	c.1243C>A	p.Gln415Lys	missense_variant	6/16		NM_022168.4	P1	Q9BYX4-1

Frequencies

GnomAD3 genomes

AF:

0.0000658

AC:

AN:

151922

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000883

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.0000719

AC:

AN:

250178

Hom.:

AF XY:

0.0000592

AC XY:

AN XY:

135222

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000320

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:

0.0000531

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000370

AC:

AN:

1460032

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

726370

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000381

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000279

Gnomad4 OTH exome

AF:

0.0000830

GnomAD4 genome

AF:

0.0000658

AC:

AN:

152040

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74330

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000883

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.000110

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000741

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Aicardi-Goutieres syndrome 7;C4225427:Singleton-Merten syndrome 1

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago	Aug 20, 2020	IFIH1 NM_022168.3 exon 6 p.Gln415Lys (c.1243C>A): This variant has not been reported in the literature but is present in 0.03% (11/34428) of Latino alleles in the Genome Aggregation Database (https://gnomad.broadinstitute.org/variant/2-163138939-G-T?dataset=gnomad_r2_1). This variant is present in ClinVar (Variation ID:541774). Evolutionary conservation and computational predictive tools suggest that this variant may impact the protein. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -
Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 20, 2024	- -

Aicardi-Goutieres syndrome 7;C4225427:Singleton-Merten syndrome 1;C5676929:Immunodeficiency 95

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

Mar 30, 2021

IFIH1 NM_022168.3 exon 6 p.Gln415Lys (c.1243C>A): This variant has not been reported in the literature but is present in 0.03% (11/34428) of Latino alleles in the Genome Aggregation Database (https://gnomad.broadinstitute.org/variant/2-163138939-G-T?dataset=gnomad_r2_1). This variant is present in ClinVar (Variation ID:541774). Evolutionary conservation and computational predictive tools suggest that this variant may impact the protein. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Oct 03, 2022

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Uncertain

0.042

BayesDel_noAF

Uncertain

0.13

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.46

T;T;.

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

1.0

FATHMM_MKL

Pathogenic

0.99

M_CAP

Benign

0.023

MetaRNN

Uncertain

0.70

D;D;D

MetaSVM

Uncertain

0.059

MutationAssessor

Uncertain

2.5

M;M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.66

Polyphen

1.0

D;D;.

Vest4

0.94

MVP

0.86

MPC

0.22

ClinPred

0.58

GERP RS

5.9

Varity_R

0.88

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

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

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