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 | 341 | 99 | 237 |
| Samples | 287 | 73 | 209 |
| Peptides | 133 | 23 | 113 |
Function
HLA-DQA2 · Major histocompatibility complex, class II, DQ alpha 2
This gene belongs to the HLA class II alpha chain family. The encoded protein forms a heterodimer with a class II beta chain. It is located in intracellular vesicles and plays a central role in the peptide loading of MHC class II molecules by helping to release the CLIP molecule from the peptide binding site. Class II molecules are expressed in antigen presenting cells (B lymphocytes, dendritic cells, macrophages) and are used to present antigenic peptides on the cell surface to be recognized by CD4 T-cells. [provided by RefSeq, Jun 2010].
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 |
|---|---|---|---|
| ENST00000374940 | P01906 | 341 | 133 |
Gene Properties
Recurrent Mutations
All 133 amino-acid changes on canonical ENST00000374940 · 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 HLA-DQA2 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in HLA-DQA2 – 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% |
| Glioblastoma | 3/98 3% | 0/0 0% |
| Acute Myeloid Leukemia | 2/90 2% | 0/0 0% |
| Non-Small Cell Lung Carcinoma | 29/304 10% | 8/1390 1% |
| Endometrial Carcinoma | 2/42 5% | 8/612 1% |
| Melanoma | 4/210 2% | 28/1899 1% |
| Ovarian Carcinoma | 3/109 3% | 11/998 1% |
| Squamous Cell Lung Carcinoma | 5/57 9% | 5/810 1% |
| Bladder Carcinoma | 1/58 2% | 10/956 1% |
| Germ Cell Tumour | 0/25 0% | 2/169 1% |
| Rhabdomyosarcoma | 1/33 3% | 1/171 1% |
| Other Solid Cancers | 1/94 1% | 14/1515 1% |
| Thyroid Gland Carcinoma | 1/45 2% | 14/1592 1% |
| Colorectal Carcinoma | 4/143 3% | 26/3239 1% |
| Cervical Carcinoma | 2/35 6% | 2/422 0% |
| Esophageal Carcinoma | 0/23 0% | 6/769 1% |
| Plasma Cell Myeloma | 0/44 0% | 2/305 1% |
| Esophageal Squamous Cell Carcinoma | 1/51 2% | 12/2550 0% |
| Other Blood Cancers | 0/61 0% | 13/2725 0% |
| B-Cell Non-Hodgkins Lymphoma | 1/88 1% | 10/2534 0% |
| Other Sarcomas | 0/69 0% | 3/699 0% |
| Gastric Carcinoma | 4/74 5% | 2/1809 0% |
| Hepatocellular Carcinoma | 2/46 4% | 4/2210 0% |
| Neuroendocrine Tumour | 1/154 1% | 1/577 0% |
| Kidney Carcinoma | 1/85 1% | 4/1862 0% |
| Breast Carcinoma | 1/144 1% | 8/3264 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 2/752 0% |
| Head and Neck Carcinoma | 0/85 0% | 4/1574 0% |
| Medulloblastoma | 0/0 0% | 1/450 0% |
| Neuroblastoma | 0/87 0% | 3/1331 0% |
Mutation Distribution
Where HLA-DQA2 is mutated · all tissues, split by cell line vs tissue
How many mutations in HLA-DQA2 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 53 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 341 mutations in HLA-DQA2
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 |
|---|