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 | 959 | 102 | 842 |
| Samples | 386 | 63 | 317 |
| Peptides | 299 | 47 | 259 |
Function
GAD1 · Glutamate decarboxylase 1
This gene encodes one of several forms of glutamic acid decarboxylase, identified as a major autoantigen in insulin-dependent diabetes. The enzyme encoded is responsible for catalyzing the production of gamma-aminobutyric acid from L-glutamic acid. A pathogenic role for this enzyme has been identified in the human pancreas since it has been identified as an autoantigen and an autoreactive T cell target in insulin-dependent diabetes. This gene may also play a role in the stiff man syndrome. Deficiency in this enzyme has been shown to lead to pyridoxine dependency with seizures. Alternative splicing of this gene results in two products, the predominant 67-kD form and a less-frequent 25-kD form. [provided by RefSeq, Jul 2008].
Isoforms & Proteins
4 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 267 amino-acid changes on canonical ENST00000358196 · 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 GAD1 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in GAD1 – 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 |
|---|---|---|
| Chordoma | 0/7 0% | 1/13 8% |
| T-Lymphoblastic Leukemia | 2/40 5% | 0/0 0% |
| Melanoma | 8/210 4% | 56/1899 3% |
| Endometrial Carcinoma | 4/42 10% | 9/612 1% |
| Colorectal Carcinoma | 8/143 6% | 48/3239 1% |
| Non-Small Cell Lung Carcinoma | 14/304 5% | 13/1390 1% |
| Cervical Carcinoma | 1/35 3% | 6/422 1% |
| Squamous Cell Lung Carcinoma | 2/57 4% | 11/810 1% |
| Bladder Carcinoma | 2/58 3% | 13/956 1% |
| Other Solid Cancers | 0/94 0% | 19/1515 1% |
| Gastric Carcinoma | 0/74 0% | 22/1809 1% |
| Chondrosarcoma | 1/14 7% | 0/75 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 8/752 1% |
| Thyroid Gland Carcinoma | 1/45 2% | 13/1592 1% |
| Plasma Cell Myeloma | 2/44 5% | 1/305 0% |
| Neuroendocrine Tumour | 2/154 1% | 4/577 1% |
| Gastrointestinal Stromal Tumour | 0/0 0% | 1/133 1% |
| Ovarian Carcinoma | 4/109 4% | 4/998 0% |
| Hepatocellular Carcinoma | 1/46 2% | 15/2210 1% |
| Esophageal Carcinoma | 0/23 0% | 5/769 1% |
| Ewings Sarcoma | 2/63 3% | 0/262 0% |
| Non-Cancerous | 0/104 0% | 5/830 1% |
| Germ Cell Tumour | 0/25 0% | 1/169 1% |
| Biliary Tract Carcinoma | 0/54 0% | 5/950 1% |
| Glioma | 0/52 0% | 11/2127 1% |
| Osteosarcoma | 1/45 2% | 0/166 0% |
| Mesothelioma | 1/62 2% | 0/165 0% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 10/2550 0% |
| Head and Neck Carcinoma | 0/85 0% | 6/1574 0% |
| Pancreatic Carcinoma | 0/89 0% | 6/1611 0% |
Mutation Distribution
Where GAD1 is mutated · all tissues, split by cell line vs tissue
How many mutations in GAD1 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 959 mutations in GAD1
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 |
|---|