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 | 2,398 | 385 | 1,910 |
| Samples | 482 | 107 | 367 |
| Peptides | 436 | 83 | 351 |
Function
SMTN · Smoothelin
This gene encodes a structural protein that is found exclusively in contractile smooth muscle cells. It associates with stress fibers and constitutes part of the cytoskeleton. This gene is localized to chromosome 22q12.3, distal to the TUPLE1 locus and outside the DiGeorge syndrome deletion. Alternative splicing of this gene results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, May 2011].
Isoforms & Proteins
6 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 |
|---|---|---|---|
| ENST00000333137 | P53814-5 | 475 | 338 |
| ENST00000619644 | A0A087X1R1* | 451 | 335 |
| ENST00000358743 | P53814-6 | 442 | 328 |
| ENST00000347557 | P53814 | 435 | 321 |
| ENST00000612341 | A0A087WVP4* | 426 | 318 |
| ENST00000404574 | B5MCI0* | 169 | 126 |
Gene Properties
Recurrent Mutations
All 338 amino-acid changes on canonical ENST00000333137 · 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 SMTN · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in SMTN – 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 |
|---|---|---|
| Chronic Myelogenous Leukemia | 3/25 12% | 0/0 0% |
| Acute Myeloid Leukemia | 5/90 6% | 0/0 0% |
| Endometrial Carcinoma | 8/42 19% | 27/612 4% |
| Oral Cavity Carcinoma | 2/54 4% | 0/0 0% |
| Glioblastoma | 3/98 3% | 0/0 0% |
| T-Lymphoblastic Leukemia | 1/40 2% | 0/0 0% |
| Melanoma | 5/210 2% | 41/1899 2% |
| Squamous Cell Lung Carcinoma | 8/57 14% | 10/810 1% |
| Non-Small Cell Lung Carcinoma | 13/304 4% | 22/1390 2% |
| Colorectal Carcinoma | 7/143 5% | 59/3239 2% |
| Gastric Carcinoma | 1/74 1% | 31/1809 2% |
| Bladder Carcinoma | 2/58 3% | 13/956 1% |
| Rhabdomyosarcoma | 3/33 9% | 0/171 0% |
| Osteosarcoma | 3/45 7% | 0/166 0% |
| Other Solid Cancers | 6/94 6% | 16/1515 1% |
| Burkitts Lymphoma | 3/32 9% | 0/196 0% |
| Neuroendocrine Tumour | 8/154 5% | 1/577 0% |
| Other Sarcomas | 0/69 0% | 8/699 1% |
| Thyroid Gland Carcinoma | 0/45 0% | 15/1592 1% |
| Ewings Sarcoma | 1/63 2% | 2/262 1% |
| Non-Cancerous | 1/104 1% | 7/830 1% |
| Meningioma | 0/3 0% | 2/252 1% |
| Head and Neck Carcinoma | 2/85 2% | 11/1574 1% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 1/133 1% |
| Hodgkins Lymphoma | 0/16 0% | 1/122 1% |
| Biliary Tract Carcinoma | 0/54 0% | 7/950 1% |
| Glioma | 1/52 2% | 13/2127 1% |
| Ovarian Carcinoma | 0/109 0% | 7/998 1% |
| Kidney Carcinoma | 2/85 2% | 10/1862 1% |
| Breast Carcinoma | 5/144 3% | 15/3264 0% |
Mutation Distribution
Where SMTN is mutated · all tissues, split by cell line vs tissue
How many mutations in SMTN 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 2,398 mutations in SMTN
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 |
|---|