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 | 1,223 | 207 | 1,010 |
| Samples | 602 | 123 | 475 |
| Peptides | 436 | 86 | 369 |
Function
PKP2 · Plakophilin 2
This gene encodes a member of the arm-repeat (armadillo) and plakophilin gene families. Plakophilin proteins contain numerous armadillo repeats, localize to cell desmosomes and nuclei, and participate in linking cadherins to intermediate filaments in the cytoskeleton. This gene may regulate the signaling activity of beta-catenin and is required to maintain transcription of genes that control intracellular calcium cycling including ryanodine receptor 2, ankyrin-B, triadin, and calcium channel, voltage-dependent, L type, alpha 1C. Mutations in this gene are associated with different inherited cardiac conditions including Arrythmogenic Cardiomyopathy, Brugada Syndrome, and Idiopathic Ventricular Fibrillation. A processed pseudogene with high similarity to this gene has been mapped to chromosome 12p13. [provided by RefSeq, May 2022].
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 396 amino-acid changes on canonical ENST00000340811 · 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 PKP2 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in PKP2 – 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 |
|---|---|---|
| Gastrointestinal Stromal Tumour | 0/0 0% | 11/133 8% |
| Chronic Myelogenous Leukemia | 2/25 8% | 0/0 0% |
| T-Lymphoblastic Leukemia | 3/40 8% | 0/0 0% |
| Melanoma | 16/210 8% | 114/1899 6% |
| Non-Small Cell Lung Carcinoma | 28/304 9% | 45/1390 3% |
| Glioblastoma | 4/98 4% | 0/0 0% |
| Acute Monocytic Leukemia | 0/1 0% | 1/25 4% |
| Oral Cavity Carcinoma | 2/54 4% | 0/0 0% |
| Endometrial Carcinoma | 1/42 2% | 15/612 2% |
| Squamous Cell Lung Carcinoma | 4/57 7% | 13/810 2% |
| Colorectal Carcinoma | 12/143 8% | 51/3239 2% |
| Small Cell Lung Carcinoma | 2/9 22% | 10/752 1% |
| Germ Cell Tumour | 2/25 8% | 1/169 1% |
| Other Solid Cancers | 7/94 7% | 18/1515 1% |
| Neuroendocrine Tumour | 5/154 3% | 6/577 1% |
| Hodgkins Lymphoma | 0/16 0% | 2/122 2% |
| Gastric Carcinoma | 4/74 5% | 21/1809 1% |
| Cervical Carcinoma | 0/35 0% | 6/422 1% |
| Bladder Carcinoma | 1/58 2% | 11/956 1% |
| Chondrosarcoma | 1/14 7% | 0/75 0% |
| Acute Myeloid Leukemia | 1/90 1% | 0/0 0% |
| Biliary Tract Carcinoma | 0/54 0% | 11/950 1% |
| Rhabdomyosarcoma | 1/33 3% | 1/171 1% |
| Ewings Sarcoma | 0/63 0% | 3/262 1% |
| Other Sarcomas | 3/69 4% | 4/699 1% |
| Glioma | 0/52 0% | 19/2127 1% |
| Adrenocortical Carcinoma | 0/3 0% | 1/112 1% |
| Thyroid Gland Carcinoma | 2/45 4% | 9/1592 1% |
| B-Cell Non-Hodgkins Lymphoma | 2/88 2% | 15/2534 1% |
| Non-Cancerous | 1/104 1% | 5/830 1% |
Mutation Distribution
Where PKP2 is mutated · all tissues, split by cell line vs tissue
How many mutations in PKP2 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 1,223 mutations in PKP2
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 |
|---|