C19orf18
protein-codingchromosome 19 open reading frame 18
Gene summary
Located in extracellular exosome. [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 ~16.1 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 C19orf18 variants in ClinVar
No annotated ClinVar phenotypes.
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_152474.5. 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 | 0 | |||||
| missense | 1 | 1 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 1 | 0 | 0 | 1 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_689687.1 | 6 | MANE Select | |
| Ensembl | ENSP00000321519.2 | 6 | MANE Select |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Biological Process
- biological_process
Molecular Function
- molecular_function
Cellular Component
- integral component of membrane
- extracellular exosome
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000314391
- Coding exons
- 6
- Length
- 16098
- Individuals with no LoFs
- 125717
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 28
- Defined
- 125745
- p
- 0.000111
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.100 | 115 | 118 | 0.974 | 0.00000629 | 1401 |
| Missense (PolyPhen) | 20 | 21.685 | 0.92232 | 244 | ||
| Synonymous | 0.214 | 45 | 46.9 | 0.960 | 0.00000294 | 390 |
| Loss of Function | 0.138 | 10 | 10.5 | 0.954 | 5.06e-7 | 131 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.000062 | 0.000062 | rare |
| Latino/Admixed American | 0.00015 | 0.00014 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.000067 | 0.000054 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.00013 | 0.00013 | rare |
| South Asian | 0.00013 | 0.00013 | rare |
| Other | 0.00033 | 0.00033 | rare |
dbNSFP Gene Annotations
Source:
Intolerance Scores
- LoFtool
- 0.819
- RVIS EVS
- 0.35
- RVIS percentile EVS
- 74.18
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |