IFNA2
protein-codinginterferon alpha 2, the group of Interferons
Gene summary
This gene is a member of the alpha interferon gene cluster on chromosome 9. The encoded cytokine is a member of the type I interferon family that is produced in response to viral infection as a key part of the innate immune response with potent antiviral, antiproliferative and immunomodulatory properties. This cytokine, like other type I interferons, binds a plasma membrane receptor made of IFNAR1 and IFNAR2 that is ubiquitously expressed, and thus is able to act on virtually all body cells. The encoded protein is effective in reducing the symptoms and duration of the common cold and in treating many types of cancer, including some hematological malignancies and solid tumors. A deficiency of type I interferon in the blood is thought to be a hallmark of severe COVID-19 and may provide a rationale for a combined therapeutic approach. [provided by RefSeq, Aug 2020]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~1.1 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 IFNA2 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_000605.4. 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 | 1 | 1 | ||||
| missense | 28 | 3 | 4 | 35 | ||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 28 | 3 | 5 | 36 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_000596.2 | 1 | MANE Select | |
| Ensembl | ENSP00000369554.2 | 1 | MANE Select |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- PI3K-Akt signaling pathway - Homo sapiens (human)
- Kaposi,s sarcoma-associated herpesvirus infection - Homo sapiens (human)
- Jak-STAT signaling pathway - Homo sapiens (human)
- Influenza A - Homo sapiens (human)
- Autoimmune thyroid disease - Homo sapiens (human)
Biological Process
- adaptive immune response
- T cell activation involved in immune response
- natural killer cell activation involved in immune response
- apoptotic process
- inflammatory response
Molecular Function
- cytokine activity
- type I interferon receptor binding
- protein binding
Cellular Component
- extracellular region
- extracellular space
- collagen-containing extracellular matrix
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000380206
- Coding exons
- 1
- Length
- 1143
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | -0.995 | 117 | 90.4 | 1.29 | 0.00000383 | 1232 |
| Missense (PolyPhen) | 26 | 22.223 | 1.1699 | 355 | ||
| Synonymous | -0.811 | 42 | 35.8 | 1.17 | 0.00000155 | 356 |
| Loss of Function |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0 | 0.0 | absent |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Produced by macrophages, IFN-alpha have antiviral activities.;
Recessive Scores
- pRec
- 0.0660
Intolerance Scores
- LoFtool
- 0.620
- RVIS EVS
- 0.46
- RVIS percentile EVS
- 78.46
Essentials
- Essential (CRISPR)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.778
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |