TMEM170B
protein-codingtransmembrane protein 170B
Gene summary
Involved in negative regulation of canonical Wnt signaling pathway. Located in plasma membrane. [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 ~45.8 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 TMEM170B variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001100829.3. 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 | 11 | 11 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 12 | 0 | 0 | 12 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001094299.1 | 3 | MANE Select | |
| Ensembl | ENSP00000368737.1 | 3 | MANE Select | |
| Ensembl | ENSP00000573416.1 | 2 | Standard | |
| Ensembl | ENSP00000573416.1 | 2 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Biological Process
- Wnt signaling pathway
- negative regulation of canonical Wnt signaling pathway
Molecular Function
- protein binding
Cellular Component
- plasma membrane
- integral component of membrane
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000379426
- Coding exons
- 3
- Length
- 45820
- Individuals with no LoFs
- 0
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 0
- Defined
- 0
- p
- 0.00
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 1.24 | 37 | 65.2 | 0.567 | 0.00000317 | 833 |
| Missense (PolyPhen) | 7 | 23.121 | 0.30275 | 263 | ||
| Synonymous | 0.868 | 21 | 26.7 | 0.786 | 0.00000149 | 275 |
| Loss of Function | 2.10 | 0 | 5.11 | 0.00 | 2.19e-7 | 58 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0 | 0.0 | absent |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Negatively regulates the canonical Wnt signaling in breast cancer cells. Exerts an inhibitory effect on breast cancer growth by inhibiting CTNNB1 stabilization and nucleus translocation, which reduces the activity of Wnt targets (PubMed:29367600). {ECO:0000269|PubMed:29367600}.;
Intolerance Scores
- RVIS EVS
- -0.08
- RVIS percentile EVS
- 47.79
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.0801
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Low | Medium |
| Primary Immunodeficiency | Medium | Low | Medium |
| Cancer | Medium | Medium | Medium |