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 | 511 | 35 | 464 |
| Samples | 91 | 7 | 82 |
| Peptides | 97 | 10 | 89 |
Function
H3F3B · Histone H3.3
Variant histone H3 which replaces conventional H3 in a wide range of nucleosomes in active genes. Constitutes the predominant form of histone H3 in non-dividing cells and is incorporated into chromatin independently of DNA synthesis. Deposited at sites of nucleosomal displacement throughout transcribed genes, suggesting that it represents an epigenetic imprint of transcriptionally active chromatin. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling
Isoforms & Proteins
6 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 66 amino-acid changes on canonical ENST00000254810 · 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 H3F3B · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in H3F3B – 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 | 2/40 5% | 0/0 0% |
| Cervical Carcinoma | 0/35 0% | 4/422 1% |
| Melanoma | 0/210 0% | 12/1899 1% |
| Other Solid Cancers | 0/94 0% | 9/1515 1% |
| Neuroendocrine Tumour | 0/154 0% | 4/577 1% |
| Germ Cell Tumour | 0/25 0% | 1/169 1% |
| Bladder Carcinoma | 0/58 0% | 5/956 1% |
| Endometrial Carcinoma | 0/42 0% | 3/612 0% |
| Squamous Cell Lung Carcinoma | 1/57 2% | 3/810 0% |
| Burkitts Lymphoma | 1/32 3% | 0/196 0% |
| Gastric Carcinoma | 0/74 0% | 6/1809 0% |
| Biliary Tract Carcinoma | 0/54 0% | 3/950 0% |
| Head and Neck Carcinoma | 0/85 0% | 5/1574 0% |
| Plasma Cell Myeloma | 1/44 2% | 0/305 0% |
| Other Sarcomas | 0/69 0% | 2/699 0% |
| Small Cell Lung Carcinoma | 0/9 0% | 2/752 0% |
| Esophageal Carcinoma | 0/23 0% | 2/769 0% |
| Non-Cancerous | 0/104 0% | 2/830 0% |
| Ovarian Carcinoma | 0/109 0% | 2/998 0% |
| Non-Small Cell Lung Carcinoma | 0/304 0% | 3/1390 0% |
| Colorectal Carcinoma | 0/143 0% | 5/3239 0% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 3/2550 0% |
| Prostate Carcinoma | 1/13 8% | 1/2105 0% |
| Breast Carcinoma | 0/144 0% | 3/3264 0% |
| Thyroid Gland Carcinoma | 0/45 0% | 1/1592 0% |
| Pancreatic Carcinoma | 0/89 0% | 1/1611 0% |
| Kidney Carcinoma | 0/85 0% | 1/1862 0% |
| Glioma | 1/52 2% | 0/2127 0% |
| Hepatocellular Carcinoma | 0/46 0% | 1/2210 0% |
Mutation Distribution
Where H3F3B is mutated · all tissues, split by cell line vs tissue
How many mutations in H3F3B 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 511 mutations in H3F3B
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 |
|---|