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 | 3,883 | 443 | 3,415 |
| Samples | 599 | 106 | 486 |
| Peptides | 474 | 76 | 416 |
Function
GABRA2 · Gamma-aminobutyric acid type A receptor subunit alpha2
GABA is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of these channels can be modulated by agents such as benzodiazepines that bind to the GABA-A receptor. At least 16 distinct subunits of GABA-A receptors have been identified. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2013].
Isoforms & Proteins
8 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 403 amino-acid changes on canonical ENST00000381620 · 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 GABRA2 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in GABRA2 – 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 |
|---|---|---|
| Squamous Cell Lung Carcinoma | 9/57 16% | 40/810 5% |
| Oral Cavity Carcinoma | 3/54 6% | 0/0 0% |
| Melanoma | 14/210 7% | 97/1899 5% |
| T-Lymphoblastic Leukemia | 2/40 5% | 0/0 0% |
| T-Cell Non-Hodgkins Lymphoma | 1/26 4% | 0/0 0% |
| Endometrial Carcinoma | 3/42 7% | 22/612 4% |
| Non-Small Cell Lung Carcinoma | 17/304 6% | 46/1390 3% |
| Other Solid Cancers | 5/94 5% | 42/1515 3% |
| Small Cell Lung Carcinoma | 0/9 0% | 20/752 3% |
| Colorectal Carcinoma | 16/143 11% | 54/3239 2% |
| Glioblastoma | 2/98 2% | 0/0 0% |
| Neuroendocrine Tumour | 9/154 6% | 3/577 1% |
| Bladder Carcinoma | 3/58 5% | 12/956 1% |
| Gastric Carcinoma | 2/74 3% | 24/1809 1% |
| Other Sarcomas | 2/69 3% | 6/699 1% |
| Germ Cell Tumour | 0/25 0% | 2/169 1% |
| Head and Neck Carcinoma | 2/85 2% | 15/1574 1% |
| Esophageal Carcinoma | 0/23 0% | 8/769 1% |
| Mesothelioma | 1/62 2% | 1/165 1% |
| Burkitts Lymphoma | 2/32 6% | 0/196 0% |
| Meningioma | 0/3 0% | 2/252 1% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 19/2550 1% |
| Hepatocellular Carcinoma | 2/46 4% | 14/2210 1% |
| Cervical Carcinoma | 0/35 0% | 3/422 1% |
| Thyroid Gland Carcinoma | 0/45 0% | 8/1592 0% |
| Breast Carcinoma | 5/144 3% | 9/3264 0% |
| Glioma | 1/52 2% | 8/2127 0% |
| Biliary Tract Carcinoma | 0/54 0% | 4/950 0% |
| B-Cell Non-Hodgkins Lymphoma | 2/88 2% | 8/2534 0% |
| Ovarian Carcinoma | 1/109 1% | 3/998 0% |
Mutation Distribution
Where GABRA2 is mutated · all tissues, split by cell line vs tissue
How many mutations in GABRA2 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 3,883 mutations in GABRA2
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 |
|---|