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 | 1,485 | 209 | 1,231 |
| Samples | 287 | 65 | 213 |
| Peptides | 228 | 47 | 178 |
Function
PAK4 · P21 (RAC1) activated kinase 4
PAK proteins, a family of serine/threonine p21-activating kinases, include PAK1, PAK2, PAK3 and PAK4. PAK proteins are critical effectors that link Rho GTPases to cytoskeleton reorganization and nuclear signaling. They serve as targets for the small GTP binding proteins Cdc42 and Rac and have been implicated in a wide range of biological activities. PAK4 interacts specifically with the GTP-bound form of Cdc42Hs and weakly activates the JNK family of MAP kinases. PAK4 is a mediator of filopodia formation and may play a role in the reorganization of the actin cytoskeleton. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008].
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.
Gene Properties
Recurrent Mutations
All 217 amino-acid changes on canonical ENST00000360442 · 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 PAK4 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in PAK4 – 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 | 2/25 8% | 0/0 0% |
| T-Lymphoblastic Leukemia | 1/40 2% | 0/0 0% |
| Acute Myeloid Leukemia | 2/90 2% | 0/0 0% |
| Endometrial Carcinoma | 6/42 14% | 7/612 1% |
| Melanoma | 4/210 2% | 26/1899 1% |
| Non-Small Cell Lung Carcinoma | 10/304 3% | 11/1390 1% |
| Other Solid Cancers | 1/94 1% | 18/1515 1% |
| Gastric Carcinoma | 1/74 1% | 21/1809 1% |
| Colorectal Carcinoma | 10/143 7% | 29/3239 1% |
| Glioblastoma | 1/98 1% | 0/0 0% |
| Rhabdomyosarcoma | 1/33 3% | 1/171 1% |
| Mesothelioma | 2/62 3% | 0/165 0% |
| Neuroendocrine Tumour | 4/154 3% | 2/577 0% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 1/133 1% |
| Esophageal Squamous Cell Carcinoma | 1/51 2% | 18/2550 1% |
| Thyroid Gland Carcinoma | 2/45 4% | 10/1592 1% |
| Biliary Tract Carcinoma | 1/54 2% | 6/950 1% |
| Cervical Carcinoma | 0/35 0% | 3/422 1% |
| Plasma Cell Myeloma | 0/44 0% | 2/305 1% |
| Germ Cell Tumour | 0/25 0% | 1/169 1% |
| Glioma | 1/52 2% | 9/2127 0% |
| Kidney Carcinoma | 0/85 0% | 8/1862 0% |
| Pancreatic Carcinoma | 1/89 1% | 6/1611 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 3/752 0% |
| Bladder Carcinoma | 1/58 2% | 3/956 0% |
| Esophageal Carcinoma | 0/23 0% | 3/769 0% |
| Ovarian Carcinoma | 3/109 3% | 1/998 0% |
| Non-Cancerous | 1/104 1% | 2/830 0% |
| B-Cell Non-Hodgkins Lymphoma | 3/88 3% | 5/2534 0% |
| Prostate Carcinoma | 0/13 0% | 6/2105 0% |
Mutation Distribution
Where PAK4 is mutated · all tissues, split by cell line vs tissue
How many mutations in PAK4 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 1,485 mutations in PAK4
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 |
|---|