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 | 629 | 81 | 544 |
| Samples | 315 | 56 | 255 |
| Peptides | 244 | 36 | 213 |
Function
CD19 · CD19 molecule
This gene encodes a member of the immunoglobulin gene superfamily. Expression of this cell surface protein is restricted to B cell lymphocytes. This protein is a reliable marker for pre-B cells but its expression diminishes during terminal B cell differentiation in antibody secreting plasma cells. The protein has two N-terminal extracellular Ig-like domains separated by a non-Ig-like domain, a hydrophobic transmembrane domain, and a large C-terminal cytoplasmic domain. This protein forms a complex with several membrane proteins including complement receptor type 2 (CD21) and tetraspanin (CD81) and this complex reduces the threshold for antigen-initiated B cell activation. Activation of this B-cell antigen receptor complex activates the phosphatidylinositol 3-kinase signalling pathway and the subsequent release of intracellular stores of calcium ions. This protein is a target of chimeric antigen receptor (CAR) T-cells used in the treatment of lymphoblastic leukemia. Mutations in this gene are associated with the disease common variable immunodeficiency 3 (CVID3) which results in a failure of B-cell differentiation and impaired secretion of immunoglobulins. CVID3 is characterized by hypogammaglobulinemia, an inability to mount an antibody response to antigen, and recurrent bacterial infections. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2020].
Isoforms & Proteins
2 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 232 amino-acid changes on canonical ENST00000538922 · 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 CD19 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in CD19 – 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% |
| T-Cell Non-Hodgkins Lymphoma | 1/26 4% | 0/0 0% |
| Acute Myeloid Leukemia | 3/90 3% | 0/0 0% |
| Endometrial Carcinoma | 3/42 7% | 15/612 2% |
| Unknown | 0/10 0% | 1/29 3% |
| Melanoma | 5/210 2% | 46/1899 2% |
| Other Solid Cancers | 0/94 0% | 20/1515 1% |
| Glioblastoma | 1/98 1% | 0/0 0% |
| Bladder Carcinoma | 0/58 0% | 10/956 1% |
| Osteosarcoma | 1/45 2% | 1/166 1% |
| Colorectal Carcinoma | 7/143 5% | 24/3239 1% |
| Gastric Carcinoma | 2/74 3% | 15/1809 1% |
| Cervical Carcinoma | 0/35 0% | 4/422 1% |
| Esophageal Squamous Cell Carcinoma | 3/51 6% | 18/2550 1% |
| Squamous Cell Lung Carcinoma | 3/57 5% | 4/810 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 6/752 1% |
| Non-Small Cell Lung Carcinoma | 5/304 2% | 8/1390 1% |
| Hodgkins Lymphoma | 0/16 0% | 1/122 1% |
| Neuroendocrine Tumour | 3/154 2% | 2/577 0% |
| Plasma Cell Myeloma | 1/44 2% | 1/305 0% |
| Glioma | 3/52 6% | 9/2127 0% |
| Hepatocellular Carcinoma | 1/46 2% | 11/2210 0% |
| Germ Cell Tumour | 0/25 0% | 1/169 1% |
| Rhabdomyosarcoma | 1/33 3% | 0/171 0% |
| Medulloblastoma | 0/0 0% | 2/450 0% |
| Burkitts Lymphoma | 0/32 0% | 1/196 1% |
| Neuroblastoma | 1/87 1% | 5/1331 0% |
| Head and Neck Carcinoma | 0/85 0% | 7/1574 0% |
| Breast Carcinoma | 4/144 3% | 10/3264 0% |
Mutation Distribution
Where CD19 is mutated · all tissues, split by cell line vs tissue
How many mutations in CD19 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 629 mutations in CD19
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 |
|---|