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 | 166 | 29 | 131 |
| Samples | 156 | 25 | 125 |
| Peptides | 107 | 18 | 88 |
Function
CLDN8 · Claudin 8
This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cell sheets, and also play critical roles in maintaining cell polarity and signal transductions. This protein plays important roles in the paracellular cation barrier of the distal renal tubule, and in the paracellular barrier to prevent sodium back-leakage in distal colon. Differential expression of this gene has been observed in colorectal carcinoma and renal cell tumors, and along with claudin-7, is an immunohistochemical marker for the differential diagnosis of chromophobe renal cell carcinoma and renal oncocytoma.[provided by RefSeq, May 2010].
Isoforms & Proteins
1 transcript · 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 |
|---|---|---|---|
| ENST00000399899 | P56748 | 166 | 107 |
Gene Properties
Recurrent Mutations
All 107 amino-acid changes on canonical ENST00000399899 · 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 CLDN8 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in CLDN8 – 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 |
|---|---|---|
| T-Lymphoblastic Leukemia | 2/40 5% | 0/0 0% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 4/133 3% |
| Mesothelioma | 0/62 0% | 4/165 2% |
| Endometrial Carcinoma | 4/42 10% | 6/612 1% |
| Hodgkins Lymphoma | 2/16 12% | 0/122 0% |
| Chondrosarcoma | 1/14 7% | 0/75 0% |
| Osteosarcoma | 0/45 0% | 2/166 1% |
| Non-Small Cell Lung Carcinoma | 2/304 1% | 13/1390 1% |
| Colorectal Carcinoma | 3/143 2% | 25/3239 1% |
| Other Solid Cancers | 1/94 1% | 10/1515 1% |
| Gastric Carcinoma | 1/74 1% | 11/1809 1% |
| Ewings Sarcoma | 2/63 3% | 0/262 0% |
| Melanoma | 1/210 0% | 9/1899 0% |
| Cervical Carcinoma | 0/35 0% | 2/422 0% |
| Neuroendocrine Tumour | 2/154 1% | 1/577 0% |
| Bladder Carcinoma | 0/58 0% | 4/956 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 3/752 0% |
| Ovarian Carcinoma | 1/109 1% | 3/998 0% |
| Squamous Cell Lung Carcinoma | 0/57 0% | 3/810 0% |
| Non-Cancerous | 0/104 0% | 3/830 0% |
| Biliary Tract Carcinoma | 0/54 0% | 3/950 0% |
| Hepatocellular Carcinoma | 0/46 0% | 6/2210 0% |
| Other Sarcomas | 0/69 0% | 2/699 0% |
| Glioma | 0/52 0% | 5/2127 0% |
| Esophageal Carcinoma | 0/23 0% | 1/769 0% |
| B-Lymphoblastic Leukemia | 0/55 0% | 3/2640 0% |
| Kidney Carcinoma | 2/85 2% | 0/1862 0% |
| Prostate Carcinoma | 0/13 0% | 2/2105 0% |
| Other Blood Cancers | 1/61 2% | 1/2725 0% |
| Pancreatic Carcinoma | 0/89 0% | 1/1611 0% |
Mutation Distribution
Where CLDN8 is mutated · all tissues, split by cell line vs tissue
How many mutations in CLDN8 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 19 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 166 mutations in CLDN8
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 |
|---|