rs587777449
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PM5PP5_Moderate
The NM_022168.4(IFIH1):c.1178A>T(p.Asp393Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D393A) has been classified as Pathogenic.
Frequency
Genomes: not found (cov: 32)
Consequence
IFIH1
NM_022168.4 missense
NM_022168.4 missense
Scores
4
5
5
Clinical Significance
Conservation
PhyloP100: 3.60
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]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PM5
?
Other missense variant is known to change same aminoacid residue: Variant chr2-162282494-T-G is described in ClinVar as [Pathogenic]. Clinvar id is 812525.Status of the report is no_assertion_criteria_provided, 0 stars.
PP5
?
Variant 2-162282494-T-A is Pathogenic according to our data. Variant chr2-162282494-T-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 137626.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
IFIH1 | NM_022168.4 | c.1178A>T | p.Asp393Val | missense_variant | 6/16 | ENST00000649979.2 | |
IFIH1 | XM_047445407.1 | c.461A>T | p.Asp154Val | missense_variant | 5/15 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
IFIH1 | ENST00000649979.2 | c.1178A>T | p.Asp393Val | missense_variant | 6/16 | NM_022168.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Aicardi-Goutieres syndrome 7 Pathogenic:2
Pathogenic, no assertion criteria provided | literature only | OMIM | May 01, 2014 | - - |
Likely pathogenic, criteria provided, single submitter | research | HudsonAlpha Institute for Biotechnology, HudsonAlpha Institute for Biotechnology | Dec 13, 2018 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
Cadd
Uncertain
Dann
Uncertain
DEOGEN2
Benign
T;T;.
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
M_CAP
Pathogenic
D
MetaRNN
Uncertain
D;D;D
MetaSVM
Benign
T
MutationAssessor
Uncertain
M;M;.
MutationTaster
Benign
D;D
PrimateAI
Benign
T
Polyphen
D;D;.
Vest4
0.94
MutPred
Gain of MoRF binding (P = 0.0592);Gain of MoRF binding (P = 0.0592);Gain of MoRF binding (P = 0.0592);
MVP
0.71
MPC
0.22
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at