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 | 135 | 29 | 104 |
| Samples | 115 | 26 | 87 |
| Peptides | 91 | 19 | 73 |
Function
MPZ · Myelin protein zero
This gene is specifically expressed in Schwann cells of the peripheral nervous system and encodes a type I transmembrane glycoprotein that is a major structural protein of the peripheral myelin sheath. The encoded protein contains a large hydrophobic extracellular domain and a smaller basic intracellular domain, which are essential for the formation and stabilization of the multilamellar structure of the compact myelin. Mutations in this gene are associated with autosomal dominant form of Charcot-Marie-Tooth disease type 1 (CMT1B) and other polyneuropathies, such as Dejerine-Sottas syndrome (DSS) and congenital hypomyelinating neuropathy (CHN). A recent study showed that two isoforms are produced from the same mRNA by use of alternative in-frame translation termination codons via a stop codon readthrough mechanism. [provided by RefSeq, Oct 2015].
Isoforms & Proteins
3 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 86 amino-acid changes on canonical ENST00000533357 · 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 MPZ · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in MPZ – 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 | 1/40 2% | 0/0 0% |
| Neuroendocrine Tumour | 6/154 4% | 0/577 0% |
| Bladder Carcinoma | 0/58 0% | 8/956 1% |
| Hodgkins Lymphoma | 0/16 0% | 1/122 1% |
| Melanoma | 0/210 0% | 14/1899 1% |
| Colorectal Carcinoma | 6/143 4% | 14/3239 0% |
| Non-Small Cell Lung Carcinoma | 3/304 1% | 6/1390 0% |
| Osteosarcoma | 1/45 2% | 0/166 0% |
| Endometrial Carcinoma | 0/42 0% | 3/612 0% |
| Biliary Tract Carcinoma | 0/54 0% | 4/950 0% |
| Meningioma | 1/3 33% | 0/252 0% |
| Other Solid Cancers | 0/94 0% | 6/1515 0% |
| Gastric Carcinoma | 0/74 0% | 6/1809 0% |
| Other Sarcomas | 2/69 3% | 0/699 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 2/752 0% |
| Esophageal Carcinoma | 0/23 0% | 2/769 0% |
| Head and Neck Carcinoma | 0/85 0% | 4/1574 0% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 6/2550 0% |
| Squamous Cell Lung Carcinoma | 2/57 4% | 0/810 0% |
| Cervical Carcinoma | 0/35 0% | 1/422 0% |
| Medulloblastoma | 0/0 0% | 1/450 0% |
| Ovarian Carcinoma | 0/109 0% | 2/998 0% |
| Thyroid Gland Carcinoma | 1/45 2% | 2/1592 0% |
| Hepatocellular Carcinoma | 0/46 0% | 3/2210 0% |
| Non-Cancerous | 0/104 0% | 1/830 0% |
| Breast Carcinoma | 1/144 1% | 1/3264 0% |
| Kidney Carcinoma | 1/85 1% | 0/1862 0% |
| Prostate Carcinoma | 0/13 0% | 1/2105 0% |
| Glioma | 0/52 0% | 1/2127 0% |
| B-Lymphoblastic Leukemia | 1/55 2% | 0/2640 0% |
Mutation Distribution
Where MPZ is mutated · all tissues, split by cell line vs tissue
How many mutations in MPZ 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 135 mutations in MPZ
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 |
|---|