TBC1D26

protein-coding

TBC1 domain family member 26

Gene summary

Predicted to enable GTPase activator activity. [provided by Alliance of Genome Resources, Jul 2025]

MANE transcript

NM_001388465.1

Inheritance

—

ClinVar variants

U:29B:6

Top phenotype

—

gnomAD constraint

pLI —, LoF o/e 0.64

Max pathogenic AF

—

Genomic locus

chr17:15,732,247-15,746,162

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~13.9 kb
Loading mutation effect viewer...

GenCC 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

2 Conditions Cataloged
not specifiedTotal: 31
not providedTotal: 1

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.

EffectPLPVUSLBBSum
synonymous
2
clinvar
2
clinvar
4
missense
26
clinvar
4
clinvar
30
nonsense
0
start loss
0
frameshift
0
splice donor/acceptor (+/-2bp)
1
clinvar
1
Total00296035
Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 8 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_001388465.1RefSeqNP_001375394.113MANE Select
ENST00000437605.4EnsemblENSP00000410111.313MANE Select
NM_178571.4RefSeqNP_848666.29Standard
ENST00000464963.5EnsemblENSP00000463783.13Standard

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: gnomAD

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-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense0.06231331350.9850.000007601610
Missense (PolyPhen)2428.8070.83314411
Synonymous-0.4725853.61.080.00000308461
Loss of Function1.321015.60.6407.09e-7196

Population LoF Frequency

PopulationCAFp-valueStatus
African00.0absent
Latino/Admixed American0.000120.00012rare
Ashkenazi Jewish00.0absent
East Asian0.0000560.000054rare
Finnish00.0absent
European (Non-Finnish)0.0000800.000079rare
South Asian0.0000980.000098rare
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

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

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyHighMediumHigh
CancerHighMediumHigh
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