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 | 1,358 | 180 | 1,136 |
| Samples | 664 | 117 | 525 |
| Peptides | 441 | 74 | 377 |
Function
KCNB1 · Potassium voltage-gated channel subfamily B member 1
Voltage-gated potassium (Kv) channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. Four sequence-related potassium channel genes - shaker, shaw, shab, and shal - have been identified in Drosophila, and each has been shown to have human homolog(s). This gene encodes a member of the potassium channel, voltage-gated, shab-related subfamily. This member is a delayed rectifier potassium channel and its activity is modulated by some other family members. [provided by RefSeq, Jul 2008].
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.
Gene Properties
Recurrent Mutations
All 441 amino-acid changes on canonical ENST00000371741 · 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 KCNB1 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in KCNB1 – 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 | 4/40 10% | 0/0 0% |
| Melanoma | 10/210 5% | 104/1899 5% |
| Chordoma | 1/7 14% | 0/13 0% |
| Endometrial Carcinoma | 7/42 17% | 23/612 4% |
| Chronic Myelogenous Leukemia | 1/25 4% | 0/0 0% |
| Non-Small Cell Lung Carcinoma | 17/304 6% | 46/1390 3% |
| Acute Myeloid Leukemia | 3/90 3% | 0/0 0% |
| Colorectal Carcinoma | 19/143 13% | 84/3239 3% |
| Gastric Carcinoma | 2/74 3% | 54/1809 3% |
| Neuroendocrine Tumour | 11/154 7% | 5/577 1% |
| Biliary Tract Carcinoma | 1/54 2% | 20/950 2% |
| Oral Cavity Carcinoma | 1/54 2% | 0/0 0% |
| Other Solid Cancers | 2/94 2% | 27/1515 2% |
| Non-Cancerous | 1/104 1% | 15/830 2% |
| Squamous Cell Lung Carcinoma | 1/57 2% | 12/810 1% |
| Hodgkins Lymphoma | 0/16 0% | 2/122 2% |
| Small Cell Lung Carcinoma | 0/9 0% | 9/752 1% |
| Cervical Carcinoma | 2/35 6% | 3/422 1% |
| Esophageal Carcinoma | 0/23 0% | 8/769 1% |
| Hepatocellular Carcinoma | 2/46 4% | 20/2210 1% |
| Thyroid Gland Carcinoma | 10/45 22% | 5/1592 0% |
| Bladder Carcinoma | 0/58 0% | 9/956 1% |
| Pancreatic Carcinoma | 5/89 6% | 9/1611 1% |
| Ovarian Carcinoma | 1/109 1% | 8/998 1% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 1/133 1% |
| Ewings Sarcoma | 2/63 3% | 0/262 0% |
| Glioma | 0/52 0% | 13/2127 1% |
| Esophageal Squamous Cell Carcinoma | 1/51 2% | 14/2550 1% |
| Prostate Carcinoma | 1/13 8% | 10/2105 0% |
| Germ Cell Tumour | 1/25 4% | 0/169 0% |
Mutation Distribution
Where KCNB1 is mutated · all tissues, split by cell line vs tissue
How many mutations in KCNB1 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 1,358 mutations in KCNB1
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 |
|---|