FOXP2: Forkhead Box P2 Gene
Key regulator of speech and language development
Gene Information Card
| Symbol | FOXP2 |
|---|---|
| Full Name | Forkhead Box P2 |
| Gene Type | Protein coding |
| Chromosomal Location | 7q31.1 |
| NCBI Gene ID | 93986 ncbi.nlm.nih.gov/gene/93986 |
| Ensembl ID | ENSG00000128573 |
| UniProt ID | O15409 |
| OMIM ID | 605317 |
| HGNC ID | 13875 |
| Aliases | SPCH1, CAGH44, TNRC10 |
Description
FOXP2 encodes a member of the forkhead box (FOX) family of transcription factors, characterized by a distinct forkhead DNA-binding domain. This protein is highly conserved among vertebrates and plays a critical role in the development of speech and language. Mutations in FOXP2 cause childhood apraxia of speech (CAS), also known as developmental verbal dyspraxia (DVD), and are associated with other neurodevelopmental disorders. The gene is expressed in multiple tissues, including brain, lung, and heart, with highest expression in the fetal and adult brain.
Disease Associations
| Disease category | Pathophysiological mechanism | Genomic evidence |
|---|---|---|
| Speech-language disorder-1 (SPCH1) | Loss-of-function mutations in FOXP2 disrupt transcription factor activity, impairing neural circuitry for speech motor control and language processing. | OMIM #602081; Lai et al., Nature 2001 |
| Childhood apraxia of speech (CAS) | Heterozygous missense or nonsense mutations lead to haploinsufficiency, affecting orofacial motor coordination and language acquisition. | ClinVar; MacDermot et al., Am J Hum Genet 2005 |
| Autism spectrum disorder (ASD) | Rare FOXP2 variants may contribute to ASD risk through altered synaptic plasticity and neuronal migration. | OMIM; Buxbaum et al., Mol Psychiatry 2003 |
Expression Profile
Tissue Expression
| Tissue | nTPM | level |
|---|---|---|
| Brain (cerebellum) | 12.5 | Medium |
| Brain (cortex) | 10.3 | Medium |
| Lung | 8.7 | Low |
| Heart | 6.2 | Low |
| Testis | 4.1 | Low |
Cell Line Expression
| Cell Line | nTPM | Notes |
|---|---|---|
| SH-SY5Y (neuroblastoma) | 15.2 | High expression; used in neuronal differentiation studies |
| HEK293 (embryonic kidney) | 3.8 | Low endogenous expression |
| U-87 MG (glioblastoma) | 9.1 | Moderate expression |
Data source：Human Protein Atlas（proteinatlas.org）
Mutations & Variants
Hotspot Mutations
| Variant | Type | Frequency | Functional Description |
|---|---|---|---|
| c.1192C>T (p.Arg398Trp) | Missense | Rare | Loss of DNA-binding ability; associated with SPCH1 |
| c.1249G>A (p.Gly417Ser) | Missense | Rare | Reduced transcriptional activity; linked to CAS |
| c.1600C>T (p.Arg534His) | Missense | Rare | Impaired nuclear localization; reported in ASD |
| c.1264C>T (p.Arg422* ) | Nonsense | Very rare | Premature stop; haploinsufficiency; severe speech disorder |
Mutation functional classification
Loss of Function (LOF)
Most FOXP2 mutations are loss-of-function, leading to haploinsufficiency and impaired transcriptional regulation of target genes involved in neural development.
Gain of Function (GOF)
No gain-of-function mutations have been reported for FOXP2.
Dominant Negative (DN)
Some missense mutations (e.g., p.Arg398Trp) may exert dominant-negative effects by interfering with wild-type FOXP2 dimerization and DNA binding.
View complete mutation data：
Gene Ontology (GO)
Pathways
• FOXP2-mediated regulation of synaptic plasticity (Reactome: R-HSA-9607240)
• Transcriptional regulation by FOXP2 (WikiPathways: WP3932)
Protein Summary
FOXP2 is a 715-amino acid transcription factor containing a forkhead DNA-binding domain, a zinc finger, and a leucine zipper. It forms homodimers and heterodimers with other FOXP family members (e.g., FOXP1, FOXP4). The protein regulates genes involved in neurite outgrowth, synaptic function, and axon guidance. FOXP2 is highly expressed in the basal ganglia, cerebellum, and cortex, regions critical for motor learning and language. Structural studies show that the forkhead domain binds to DNA sequences containing the core motif 5'-TAAACA-3'. Post-translational modifications include phosphorylation and acetylation, which modulate its activity and stability.
Related Services
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| FOXP2 Knockout HEK293 Cell Line | EDJ-KQ11268 | Human | 93986 | Details Get a Quote |
| FOXP2 Knockout HeLa Cell Line | EDJ-KQ39372 | Human | 93986 | Details Get a Quote |
| FOXP2 Knockout A-549 Cell Line | EDJ-KQ66369 | Human | 93986 | Details Get a Quote |
| FOXP2 Knockout HCT 116 Cell Line | EDJ-KQ74793 | Human | 93986 | Details Get a Quote |
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