TBC1D26
protein-codingTBC1 domain family member 26
Gene summary
Predicted to enable GTPase activator activity. [provided by Alliance of Genome Resources, Jul 2025]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~13.9 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 TBC1D26 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001388465.1. 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 | 2 | 2 | 4 | |||
| missense | 26 | 4 | 30 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 1 | 1 | ||||
| Total | 0 | 0 | 29 | 6 | 0 | 35 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001375394.1 | 13 | MANE Select | |
| Ensembl | ENSP00000410111.3 | 13 | MANE Select | |
| RefSeq | NP_848666.2 | 9 | Standard | |
| Ensembl | ENSP00000463783.1 | 3 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Biological Process
- intracellular protein transport
- activation of GTPase activity
Molecular Function
- GTPase activator activity
- Rab GTPase binding
Cellular Component
- cell
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000437605
- Coding exons
- 9
- Length
- 13916
- Individuals with no LoFs
- 125319
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 17
- Defined
- 125336
- p
- 0.0000678
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.0623 | 133 | 135 | 0.985 | 0.00000760 | 1610 |
| Missense (PolyPhen) | 24 | 28.807 | 0.83314 | 411 | ||
| Synonymous | -0.472 | 58 | 53.6 | 1.08 | 0.00000308 | 461 |
| Loss of Function | 1.32 | 10 | 15.6 | 0.640 | 7.09e-7 | 196 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0.00012 | 0.00012 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.000056 | 0.000054 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000080 | 0.000079 | rare |
| South Asian | 0.000098 | 0.000098 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: May act as a GTPase-activating protein for Rab family protein(s). {ECO:0000305}.;
Intolerance Scores
- LoFtool
- 0.630
- RVIS EVS
- 1.28
- RVIS percentile EVS
- 93.77
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.0170
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | High | Medium | High |
| Cancer | High | Medium | High |