ABI2
protein-codingabl interactor 2, the group of SCAR/WAVE complex
Gene summary
Enables identical protein binding activity; signaling adaptor activity; and ubiquitin protein ligase binding activity. Contributes to small GTPase binding activity. Involved in several processes, including Rac protein signal transduction; positive regulation of cellular component organization; and zonula adherens assembly. Acts upstream of or within peptidyl-tyrosine phosphorylation. Located in several cellular components, including actin filament; filopodium tip; and lamellipodium. Part of SCAR complex. Is active in adherens junction. [provided by Alliance of Genome Resources, Jun 2026]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~119.4 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 ABI2 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001375670.1. 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 | 1 | 34 | 35 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 2 | 2 | ||||
| Total | 0 | 1 | 37 | 0 | 0 | 38 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001362599.1 | 12 | MANE Select | |
| Ensembl | ENSP00000261018.9 | 12 | MANE Select | |
| RefSeq | NP_001269854.1 | 11 | Standard | |
| RefSeq | NP_001269855.1 | 10 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Regulation of actin cytoskeleton - Homo sapiens (human)
- Regulation of Actin Cytoskeleton
- Signal Transduction
- VEGFA-VEGFR2 Pathway
- Fcgamma receptor (FCGR) dependent phagocytosis
Biological Process
- cytoskeleton organization
- nervous system development
- actin polymerization or depolymerization
- viral process
- cell migration
Molecular Function
- DNA binding
- protein binding
- cytoskeletal adaptor activity
- SH3 domain binding
- kinase binding
Cellular Component
- nucleus
- cytoplasm
- cytosol
- cytoskeleton
- adherens junction
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000261017
- Coding exons
- 10
- Length
- 119505
- Individuals with no LoFs
- 125743
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 5
- Defined
- 125748
- p
- 0.0000199
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 2.25 | 163 | 266 | 0.612 | 0.0000138 | 3070 |
| Missense (PolyPhen) | 53 | 111.87 | 0.47375 | 1295 | ||
| Synonymous | 1.02 | 78 | 90.4 | 0.863 | 0.00000460 | 950 |
| Loss of Function | 3.46 | 5 | 22.9 | 0.219 | 0.00000130 | 261 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0.000029 | 0.000029 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0.000046 | 0.000046 | rare |
| European (Non-Finnish) | 0.000029 | 0.000026 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Regulator of actin cytoskeleton dynamics underlying cell motility and adhesion. Functions as a component of the WAVE complex, which activates actin nucleating machinery Arp2/3 to drive lamellipodia formation (PubMed:21107423). Acts as regulator and substrate of nonreceptor tyrosine kinases ABL1 and ABL2 involved in processes linked to cell growth and differentiation. Positively regulates ABL1-mediated phosphorylation of ENAH, which is required for proper polymerization of nucleated actin filaments at the leading edge (PubMed:7590236, PubMed:8649853, PubMed:10498863). Contributes to the regulation of actin assembly at the tips of neuron projections. In particular, controls dendritic spine morphogenesis and may promote dendritic spine specification toward large mushroom-type spines known as repositories of memory in the brain (By similarity). In hippocampal neurons, may mediate actin-dependent BDNF-NTRK2 early endocytic trafficking that triggers dendrite outgrowth (By similarity). Participates in ocular lens morphogenesis, likely by regulating lamellipodia-driven adherens junction formation at the epithelial cell-secondary lens fiber interface (By similarity). Also required for nascent adherens junction assembly in epithelial cells (PubMed:15572692). {ECO:0000250|UniProtKB:P62484, ECO:0000269|PubMed:10498863, ECO:0000269|PubMed:15572692, ECO:0000269|PubMed:21107423, ECO:0000269|PubMed:7590236, ECO:0000269|PubMed:8649853}.;
Recessive Scores
- pRec
- 0.192
Intolerance Scores
- LoFtool
- 0.181
- RVIS EVS
- -0.36
- RVIS percentile EVS
- 28.63
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.988
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |