Stats by Source
Total, split by cell line (COSMIC CL / DepMap / PubMed) vs tissue (COSMIC primary tissue)
Total = all mutations for this gene across every source.
Cell line = COSMIC Cell Lines Project + DepMap + PubMed.
Tissue = COSMIC primary-tissue (patient tumour) samples.
Total can exceed cell line + tissue: COSMIC tissue-derived models sit only in global, and a peptide can be shared across both.
| Total | Cell line | Tissue | |
|---|---|---|---|
| Mutations | 130 | 23 | 101 |
| Samples | 124 | 22 | 98 |
| Peptides | 91 | 16 | 71 |
Function
USP18 · Ubiquitin specific peptidase 18
The protein encoded by this gene belongs to the ubiquitin-specific proteases (UBP) family of enzymes that cleave ubiquitin from ubiquitinated protein substrates. It is highly expressed in liver and thymus, and is localized to the nucleus. This protein efficiently cleaves only ISG15 (a ubiquitin-like protein) fusions, and deletion of this gene in mice results in a massive increase of ISG15 conjugates in tissues, indicating that this protein is a major ISG15-specific protease. Mice lacking this gene are also hypersensitive to interferon, suggesting a function of this protein in downregulating interferon responses, independent of its isopeptidase activity towards ISG15. [provided by RefSeq, Sep 2011].
Isoforms & Proteins
2 transcripts · UniProt mapping is sequence-verified (AA-safe)
Each Ensembl transcript (ENST) this gene is mutated on, with its matched UniProt accession.
The mapping is sequence-verified: the UniProt sequence is identical to the transcript translation, so amino-acid positions line up exactly. A * marks an unreviewed (TrEMBL) entry.
Counts are mutations and unique mutant peptides on each transcript.
| Transcript | UniProt | Mutations | Peptides |
|---|---|---|---|
| ENST00000215794 | Q9UMW8 | 128 | 89 |
| ENST00000699060 | A0A8V8TMN0* | 2 | 2 |
Gene Properties
Recurrent Mutations
All 89 amino-acid changes on canonical ENST00000215794 · needle height = samples · drag the mini-map to zoom
A lollipop / needle plot – the standard way to show recurrent mutations along a protein (as used by cBioPortal and MutationMapper).
X-axis = amino-acid position in the protein.
Needle height & head size = how often that exact amino-acid change was observed (its recurrence). Tall/large heads are mutational hotspots.
The most recurrent changes are labelled; hover any needle for the change, position and counts.
Mutation frequency across cancer types
% of samples with a missense/complex mutation in USP18 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in USP18 – counted as distinct samples (a sample counts once no matter how many mutations it has).
Split into cell line and tissue; each cell shows mutated / total and the percentage. Cohorts with <20 samples are omitted. Ordered by combined frequency.
| Cancer type | Cell lines | Tissue samples |
|---|---|---|
| Oral Cavity Carcinoma | 1/54 2% | 0/0 0% |
| Endometrial Carcinoma | 1/42 2% | 6/612 1% |
| Glioblastoma | 1/98 1% | 0/0 0% |
| Ovarian Carcinoma | 1/109 1% | 9/998 1% |
| Non-Small Cell Lung Carcinoma | 9/304 3% | 4/1390 0% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 1/133 1% |
| Cervical Carcinoma | 0/35 0% | 3/422 1% |
| Colorectal Carcinoma | 3/143 2% | 17/3239 1% |
| Other Solid Cancers | 0/94 0% | 8/1515 1% |
| Bladder Carcinoma | 0/58 0% | 5/956 1% |
| Melanoma | 0/210 0% | 10/1899 1% |
| Squamous Cell Lung Carcinoma | 1/57 2% | 3/810 0% |
| Burkitts Lymphoma | 1/32 3% | 0/196 0% |
| Thyroid Gland Carcinoma | 0/45 0% | 5/1592 0% |
| Biliary Tract Carcinoma | 0/54 0% | 3/950 0% |
| Gastric Carcinoma | 0/74 0% | 5/1809 0% |
| Other Sarcomas | 1/69 1% | 1/699 0% |
| Kidney Carcinoma | 0/85 0% | 4/1862 0% |
| Non-Cancerous | 0/104 0% | 2/830 0% |
| Prostate Carcinoma | 0/13 0% | 4/2105 0% |
| Head and Neck Carcinoma | 1/85 1% | 2/1574 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 1/752 0% |
| Glioma | 0/52 0% | 2/2127 0% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 2/2550 0% |
| Other Blood Cancers | 0/61 0% | 2/2725 0% |
| Pancreatic Carcinoma | 0/89 0% | 1/1611 0% |
| Breast Carcinoma | 1/144 1% | 1/3264 0% |
| B-Cell Non-Hodgkins Lymphoma | 0/88 0% | 1/2534 0% |
| B-Lymphoblastic Leukemia | 1/55 2% | 0/2640 0% |
Mutation Distribution
Where USP18 is mutated · all tissues, split by cell line vs tissue
How many mutations in USP18 were found in each tissue, across the whole database.
Each bar is a tissue (cell-line and tissue names are merged to the standard tissue), split into cell line and tissue (patient tumour) contributions.
This shows the cancer-context where this gene is recurrently altered.
GTEx Expression
Median TPM across 54 healthy tissues
Median gene expression (TPM) in normal, non-cancer human tissues from the GTEx project.
Useful for judging tumour specificity – a strong neoantigen target ideally comes from a gene with low expression in healthy tissues.
Scroll or drag the mini-axis below the chart to browse all tissues.
Mutations
All 130 mutations in USP18
Every mutation record for this gene, across all samples and sources.
The Sample column links to the cell line (cell-line samples) or the tissue type (tissue samples).
Use the Type / Source filters, the search box, and column sorting to explore; each CAN-IMMUNE ID opens the full mutation & peptide view.
| ID | Sample | Transcript | AA Change | CDS | Type | Source | Mutant Peptide | Wild-type Peptide |
|---|