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 | 333 | 31 | 290 |
| Samples | 206 | 27 | 172 |
| Peptides | 149 | 19 | 126 |
Function
HEXB · Hexosaminidase subunit beta
Hexosaminidase B is the beta subunit of the lysosomal enzyme beta-hexosaminidase that, together with the cofactor GM2 activator protein, catalyzes the degradation of the ganglioside GM2, and other molecules containing terminal N-acetyl hexosamines. Beta-hexosaminidase is composed of two subunits, alpha and beta, which are encoded by separate genes. Both beta-hexosaminidase alpha and beta subunits are members of family 20 of glycosyl hydrolases. Mutations in the alpha or beta subunit genes lead to an accumulation of GM2 ganglioside in neurons and neurodegenerative disorders termed the GM2 gangliosidoses. Beta subunit gene mutations lead to Sandhoff disease (GM2-gangliosidosis type II). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2014].
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 142 amino-acid changes on canonical ENST00000261416 · 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 HEXB · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in HEXB – 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 | 3/40 8% | 0/0 0% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 6/133 5% |
| Oral Cavity Carcinoma | 2/54 4% | 0/0 0% |
| Endometrial Carcinoma | 0/42 0% | 14/612 2% |
| Rhabdomyosarcoma | 1/33 3% | 3/171 2% |
| Hodgkins Lymphoma | 0/16 0% | 2/122 2% |
| Bladder Carcinoma | 1/58 2% | 13/956 1% |
| Acute Myeloid Leukemia | 1/90 1% | 0/0 0% |
| Colorectal Carcinoma | 3/143 2% | 27/3239 1% |
| Melanoma | 1/210 0% | 17/1899 1% |
| Gastric Carcinoma | 0/74 0% | 13/1809 1% |
| Cervical Carcinoma | 0/35 0% | 3/422 1% |
| Ewings Sarcoma | 0/63 0% | 2/262 1% |
| Plasma Cell Myeloma | 1/44 2% | 1/305 0% |
| Non-Cancerous | 2/104 2% | 3/830 0% |
| Non-Small Cell Lung Carcinoma | 5/304 2% | 4/1390 0% |
| Mesothelioma | 1/62 2% | 0/165 0% |
| Burkitts Lymphoma | 0/32 0% | 1/196 1% |
| Thyroid Gland Carcinoma | 0/45 0% | 7/1592 0% |
| Other Sarcomas | 0/69 0% | 3/699 0% |
| Esophageal Carcinoma | 0/23 0% | 3/769 0% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 10/2550 0% |
| Other Solid Cancers | 0/94 0% | 6/1515 0% |
| Squamous Cell Lung Carcinoma | 2/57 4% | 1/810 0% |
| Ovarian Carcinoma | 0/109 0% | 3/998 0% |
| Breast Carcinoma | 0/144 0% | 9/3264 0% |
| Glioma | 0/52 0% | 5/2127 0% |
| Medulloblastoma | 0/0 0% | 1/450 0% |
| B-Cell Non-Hodgkins Lymphoma | 0/88 0% | 5/2534 0% |
| Head and Neck Carcinoma | 0/85 0% | 3/1574 0% |
Mutation Distribution
Where HEXB is mutated · all tissues, split by cell line vs tissue
How many mutations in HEXB 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 333 mutations in HEXB
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 |
|---|