IFITM3
protein-codinginterferon induced transmembrane protein 3, the group of Interferon induced transmembrane proteins
Gene summary
Interferon-induced transmembrane (IFITM) proteins are a family of interferon induced antiviral proteins. The family contains five members, including IFITM1, IFITM2 and IFITM3 and belong to the CD225 superfamily. The protein encoded by this gene restricts cellular entry by diverse viral pathogens, such as influenza A virus, Ebola virus and Sars-CoV-2. [provided by RefSeq, Nov 2021]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~9.8 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to IFITM3 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_021034.3. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 0 | |||||
| missense | 20 | 1 | 21 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 1 | 1 | ||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 21 | 1 | 0 | 22 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_066362.2 | 2 | MANE Select | |
| Ensembl | ENSP00000382707.4 | 2 | MANE Select | |
| Ensembl | ENSP00000432108.1 | 2 | Standard | |
| Ensembl | ENSP00000432108.1 | 2 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Cytokine Signaling in Immune system
- Immune System
- Interferon alpha/beta signaling
- Interferon Signaling
Biological Process
- immune response
- response to virus
- negative regulation of viral transcription
- response to interferon-gamma
- response to interferon-alpha
Molecular Function
- protein binding
Cellular Component
- lysosomal membrane
- plasma membrane
- integral component of membrane
- late endosome membrane
- protein-containing complex
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000399808
- Coding exons
- 2
- Length
- 7869
- Individuals with no LoFs
- 124777
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 4
- Defined
- 124781
- p
- 0.0000160
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | -0.541 | 88 | 74.8 | 1.18 | 0.00000370 | 858 |
| Missense (PolyPhen) | 13 | 12.541 | 1.0366 | 181 | ||
| Synonymous | -2.49 | 53 | 34.4 | 1.54 | 0.00000192 | 280 |
| Loss of Function | 0.208 | 2 | 2.34 | 0.853 | 1.01e-7 | 24 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.000065 | 0.000065 | rare |
| Latino/Admixed American | 0.000029 | 0.000029 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0.000047 | 0.000046 | rare |
| European (Non-Finnish) | 0.0000089 | 0.0000088 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: IFN-induced antiviral protein which disrupts intracellular cholesterol homeostasis. Inhibits the entry of viruses to the host cell cytoplasm by preventing viral fusion with cholesterol depleted endosomes. May inactivate new enveloped viruses which buds out of the infected cell, by letting them go out with a cholesterol depleted membrane. Active against multiple viruses, including influenza A virus, SARS coronavirus (SARS-CoV), Marburg virus (MARV) and Ebola virus (EBOV), Dengue virus (DNV), West Nile virus (WNV), human immunodeficiency virus type 1 (HIV-1) and vesicular stomatitis virus (VSV). Can inhibit: influenza virus hemagglutinin protein-mediated viral entry, MARV and EBOV GP1,2- mediated viral entry, SARS-CoV S protein-mediated viral entry and VSV G protein-mediated viral entry. Plays a critical role in the structural stability and function of vacuolar ATPase (v-ATPase). Establishes physical contact with the v-ATPase of endosomes which is critical for proper clathrin localization and is also required for the function of the v-ATPase to lower the pH in phagocytic endosomes thus establishing an antiviral state. {ECO:0000269|PubMed:20064371, ECO:0000269|PubMed:20534863, ECO:0000269|PubMed:20943977, ECO:0000269|PubMed:21177806, ECO:0000269|PubMed:21253575, ECO:0000269|PubMed:22046135, ECO:0000269|PubMed:22479637, ECO:0000269|PubMed:23601107}.;
Intolerance Scores
- LoFtool
- 0.185
- RVIS EVS
- 0.13
- RVIS percentile EVS
- 62.74
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.0306
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |