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 | 168 | 41 | 126 |
| Samples | 164 | 41 | 122 |
| Peptides | 121 | 23 | 101 |
Function
ST6GALNAC4 · ST6 N-acetylgalactosaminide alpha-2,6-sialyltransferase 4
The protein encoded by this gene is a type II membrane protein that catalyzes the transfer of sialic acid from CMP-sialic acid to galactose-containing substrates. The encoded protein prefers glycoproteins rather than glycolipids as substrates and shows restricted substrate specificity, utilizing only the trisaccharide sequence Neu5Ac-alpha-2,3-Gal-beta-1,3-GalNAc. In addition, it is involved in the synthesis of ganglioside GD1A from GM1B. The encoded protein is normally found in the Golgi apparatus but can be proteolytically processed to a soluble form. This protein is a member of glycosyltransferase family 29. Transcript variants encoding different isoforms have been found for this gene. Readthrough transcripts exist for this gene and the downstream ST6GALNAC6 gene. [provided by RefSeq, Jan 2022].
Isoforms & Proteins
1 transcript · 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.
| Transcript | UniProt | Mutations | Peptides |
|---|---|---|---|
| ENST00000335791 | Q9H4F1 | 168 | 121 |
Gene Properties
Recurrent Mutations
All 121 amino-acid changes on canonical ENST00000335791 · 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 ST6GALNAC4 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in ST6GALNAC4 – 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 |
|---|---|---|
| Glioblastoma | 4/98 4% | 0/0 0% |
| Chronic Myelogenous Leukemia | 1/25 4% | 0/0 0% |
| T-Lymphoblastic Leukemia | 1/40 2% | 0/0 0% |
| Acute Myeloid Leukemia | 1/90 1% | 0/0 0% |
| Melanoma | 5/210 2% | 18/1899 1% |
| Germ Cell Tumour | 0/25 0% | 2/169 1% |
| Osteosarcoma | 2/45 4% | 0/166 0% |
| Endometrial Carcinoma | 0/42 0% | 6/612 1% |
| Colorectal Carcinoma | 6/143 4% | 19/3239 1% |
| Cervical Carcinoma | 1/35 3% | 2/422 0% |
| Non-Small Cell Lung Carcinoma | 6/304 2% | 4/1390 0% |
| Squamous Cell Lung Carcinoma | 0/57 0% | 5/810 1% |
| Gastric Carcinoma | 0/74 0% | 11/1809 1% |
| Small Cell Lung Carcinoma | 0/9 0% | 4/752 1% |
| Neuroendocrine Tumour | 2/154 1% | 1/577 0% |
| Thyroid Gland Carcinoma | 0/45 0% | 5/1592 0% |
| Esophageal Squamous Cell Carcinoma | 2/51 4% | 6/2550 0% |
| Ewings Sarcoma | 0/63 0% | 1/262 0% |
| Bladder Carcinoma | 0/58 0% | 3/956 0% |
| Prostate Carcinoma | 2/13 15% | 4/2105 0% |
| Glioma | 0/52 0% | 6/2127 0% |
| Hepatocellular Carcinoma | 1/46 2% | 5/2210 0% |
| Pancreatic Carcinoma | 1/89 1% | 3/1611 0% |
| Breast Carcinoma | 4/144 3% | 4/3264 0% |
| Medulloblastoma | 0/0 0% | 1/450 0% |
| Other Solid Cancers | 0/94 0% | 3/1515 0% |
| Head and Neck Carcinoma | 0/85 0% | 3/1574 0% |
| Non-Cancerous | 0/104 0% | 1/830 0% |
| Biliary Tract Carcinoma | 0/54 0% | 1/950 0% |
| Ovarian Carcinoma | 1/109 1% | 0/998 0% |
Mutation Distribution
Where ST6GALNAC4 is mutated · all tissues, split by cell line vs tissue
How many mutations in ST6GALNAC4 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 168 mutations in ST6GALNAC4
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 |
|---|