ITGA5
protein-codingintegrin subunit alpha 5, the group of Integrin alpha subunits|CD molecules
Gene summary
The product of this gene belongs to the integrin alpha chain family. Integrins are heterodimeric integral membrane proteins composed of an alpha subunit and a beta subunit that function in cell surface adhesion and signaling. The encoded preproprotein is proteolytically processed to generate light and heavy chains that comprise the alpha 5 subunit. This subunit associates with the beta 1 subunit to form a fibronectin receptor. This integrin may promote tumor invasion, and higher expression of this gene may be correlated with shorter survival time in lung cancer patients. Note that the integrin alpha 5 and integrin alpha V subunits are encoded by distinct genes. [provided by RefSeq, Oct 2015]
- FNRA
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~24.0 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 ITGA5 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_002205.5. 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 | 5 | 5 | 10 | |||
| missense | 139 | 4 | 4 | 147 | ||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 11 | 11 | ||||
| Total | 0 | 0 | 155 | 4 | 9 | 168 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_002196.4 | 30 | MANE Select | |
| Ensembl | ENSP00000293379.4 | 30 | MANE Select | |
| Ensembl | ENSP00000405865.2 | 3 | Standard | |
| Ensembl | ENSP00000450267.1 | 4 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| itga5 | Danio rerio | Structure: interrenal angiogenic sprout Quality: absent abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- PI3K-Akt signaling pathway - Homo sapiens (human)
- ECM-receptor interaction - Homo sapiens (human)
- Focal adhesion - Homo sapiens (human)
- Pertussis - Homo sapiens (human)
- Dilated cardiomyopathy (DCM) - Homo sapiens (human)
Biological Process
- angiogenesis
- cell-substrate junction assembly
- cell adhesion
- heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules
- leukocyte cell-cell adhesion
Molecular Function
- virus receptor activity
- epidermal growth factor receptor binding
- platelet-derived growth factor receptor binding
- integrin binding
- protein binding
Cellular Component
- ruffle
- endoplasmic reticulum
- Golgi apparatus
- plasma membrane
- cell-cell junction
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000293379
- Coding exons
- 30
- Length
- 24200
- Individuals with no LoFs
- 125723
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 25
- Defined
- 125748
- p
- 0.0000994
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 1.65 | 481 | 594 | 0.809 | 0.0000329 | 6711 |
| Missense (PolyPhen) | 172 | 255.82 | 0.67235 | 2975 | ||
| Synonymous | 1.08 | 221 | 242 | 0.912 | 0.0000134 | 2167 |
| Loss of Function | 5.88 | 15 | 66.9 | 0.224 | 0.00000356 | 692 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.00025 | 0.00025 | rare |
| Latino/Admixed American | 0.000058 | 0.000029 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00022 | 0.00022 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000071 | 0.000070 | rare |
| South Asian | 0.00026 | 0.00026 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Integrin alpha-5/beta-1 (ITGA5:ITGB1) is a receptor for fibronectin and fibrinogen. It recognizes the sequence R-G-D in its ligands. ITGA5:ITGB1 binds to PLA2G2A via a site (site 2) which is distinct from the classical ligand-binding site (site 1) and this induces integrin conformational changes and enhanced ligand binding to site 1 (PubMed:18635536, PubMed:25398877). ITGA5:ITGB1 acts as a receptor for fibrillin-1 (FBN1) and mediates R-G-D-dependent cell adhesion to FBN1 (PubMed:12807887, PubMed:17158881). ITGA5:ITGB1 is a receptor for IL1B and binding is essential for IL1B signaling (PubMed:29030430). {ECO:0000269|PubMed:12807887, ECO:0000269|PubMed:17158881, ECO:0000269|PubMed:18635536, ECO:0000269|PubMed:25398877, ECO:0000269|PubMed:29030430}.; FUNCTION: (Microbial infection) Integrin ITGA2:ITGB1 acts as a receptor for Human parvovirus B19. {ECO:0000269|PubMed:24478423}.;
Recessive Scores
- pRec
- 0.540
Intolerance Scores
- RVIS EVS
- -0.86
- RVIS percentile EVS
- 10.92
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- S
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.963
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |