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 | 537 | 81 | 446 |
| Samples | 199 | 36 | 160 |
| Peptides | 166 | 39 | 130 |
Function
MARCH8 · E3 ubiquitin-protein ligase MARCHF8
E3 ubiquitin-protein ligase that plays several important roles in innate immunity and adaptive immunity (PubMed:34285233, PubMed:35019698, PubMed:35503863). Mediates ubiquitination of CD86 and MHC class II proteins, such as HLA-DR alpha and beta, and promotes their subsequent endocytosis and sorting to lysosomes via multivesicular bodies (PubMed:19117940, PubMed:19566897). Possesses a very broad antiviral activity by specifically inactivating different viral fusion proteins (PubMed:32934085). Targets and ubiquitinates cytoplasmic lysine residues of viral envelope glycoproteins with single transmembrane domains leading to their lysosomal degradation (PubMed:35019698). Therefore, shows broad-spectrum inhibition against many viruses including retroviruses, rhabdoviruses, arenaviruses, sarbecoviruses or influenzaviruses (PubMed:34285233, PubMed:35019698). Strongly blocks human immunodeficiency virus type 1 envelope glycoprotein incorporation into virions by down-regulating its cell surface expression. Also blocks ebola virus glycoprotein/GP incorporation via surface down-regulation (PubMed:32934085). Mediates 'Lys-63'-linked polyubiquitination of influenza M2 to target it to lysosome for degradation (PubMed:34285233). Mediates the regulation of constitutive ubiquitination and trafficking of the viral restriction factor BST2 within the endocytic pathway (PubMed:28320822). Plays a role in maintenance of immune tolerance to self by promoting the turnover and proteasomal degradation of PD-L1/CD274 via ubiquitination (PubMed:34183449). Catalyzes the 'Lys-63'-linked polyubiquitylation of cGAS thereby inhibiting its DNA binding ability and impairing its antiviral innate immunity (PubMed:35503863). Negatively regulates IL7-mediated T-cell homeostasis by mediating 'Lys-27'-linked polyubiquitination of IL7R, leading to its lysosomal degradation (PubMed:39311660)
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 158 amino-acid changes on canonical ENST00000453424 · 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 MARCH8 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in MARCH8 – 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% |
| Acute Myeloid Leukemia | 2/90 2% | 0/0 0% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 2/133 2% |
| Rhabdomyosarcoma | 0/33 0% | 3/171 2% |
| Hodgkins Lymphoma | 0/16 0% | 2/122 2% |
| Non-Small Cell Lung Carcinoma | 10/304 3% | 11/1390 1% |
| Endometrial Carcinoma | 0/42 0% | 8/612 1% |
| Non-Cancerous | 0/104 0% | 10/830 1% |
| Glioblastoma | 1/98 1% | 0/0 0% |
| Colorectal Carcinoma | 6/143 4% | 22/3239 1% |
| Bladder Carcinoma | 0/58 0% | 7/956 1% |
| Other Solid Cancers | 2/94 2% | 9/1515 1% |
| Small Cell Lung Carcinoma | 0/9 0% | 5/752 1% |
| Melanoma | 0/210 0% | 13/1899 1% |
| Gastric Carcinoma | 1/74 1% | 9/1809 0% |
| Other Sarcomas | 2/69 3% | 2/699 0% |
| Biliary Tract Carcinoma | 0/54 0% | 5/950 1% |
| Mesothelioma | 0/62 0% | 1/165 1% |
| Neuroendocrine Tumour | 3/154 2% | 0/577 0% |
| Esophageal Carcinoma | 0/23 0% | 3/769 0% |
| Esophageal Squamous Cell Carcinoma | 2/51 4% | 8/2550 0% |
| Thyroid Gland Carcinoma | 1/45 2% | 5/1592 0% |
| Head and Neck Carcinoma | 0/85 0% | 6/1574 0% |
| Squamous Cell Lung Carcinoma | 0/57 0% | 3/810 0% |
| Plasma Cell Myeloma | 1/44 2% | 0/305 0% |
| Breast Carcinoma | 0/144 0% | 8/3264 0% |
| Cervical Carcinoma | 0/35 0% | 1/422 0% |
| Hepatocellular Carcinoma | 0/46 0% | 5/2210 0% |
| B-Cell Non-Hodgkins Lymphoma | 2/88 2% | 3/2534 0% |
| Other Blood Cancers | 0/61 0% | 5/2725 0% |
Mutation Distribution
Where MARCH8 is mutated · all tissues, split by cell line vs tissue
How many mutations in MARCH8 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 537 mutations in MARCH8
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 |
|---|