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 | 4,676 | 553 | 4,050 |
| Samples | 1,140 | 202 | 917 |
| Peptides | 942 | 132 | 823 |
Function
AFF2 · ALF transcription elongation factor 2
This gene encodes a putative transcriptional activator that is a member of the AF4\FMR2 gene family. This gene is associated with the folate-sensitive fragile X E locus on chromosome X. A repeat polymorphism in the fragile X E locus results in silencing of this gene causing Fragile X E syndrome. Fragile X E syndrome is a form of nonsyndromic X-linked cognitive disability. In addition, this gene contains 6-25 GCC repeats that are expanded to >200 repeats in the disease state. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Jul 2016].
Isoforms & Proteins
5 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 876 amino-acid changes on canonical ENST00000370460 · 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 AFF2 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in AFF2 – 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 | 5/40 12% | 0/0 0% |
| Chordoma | 0/7 0% | 2/13 15% |
| Non-Small Cell Lung Carcinoma | 46/304 15% | 98/1390 7% |
| Endometrial Carcinoma | 11/42 26% | 43/612 7% |
| Acute Myeloid Leukemia | 7/90 8% | 0/0 0% |
| T-Cell Non-Hodgkins Lymphoma | 2/26 8% | 0/0 0% |
| Melanoma | 19/210 9% | 108/1899 6% |
| Hodgkins Lymphoma | 8/16 50% | 0/122 0% |
| Gastric Carcinoma | 3/74 4% | 83/1809 5% |
| Small Cell Lung Carcinoma | 0/9 0% | 34/752 5% |
| Colorectal Carcinoma | 26/143 18% | 125/3239 4% |
| Cervical Carcinoma | 4/35 11% | 14/422 3% |
| Squamous Cell Lung Carcinoma | 0/57 0% | 29/810 4% |
| Glioblastoma | 3/98 3% | 0/0 0% |
| Adrenocortical Carcinoma | 2/3 67% | 1/112 1% |
| Other Solid Cancers | 7/94 7% | 34/1515 2% |
| Esophageal Carcinoma | 0/23 0% | 18/769 2% |
| Chondrosarcoma | 2/14 14% | 0/75 0% |
| Mesothelioma | 3/62 5% | 2/165 1% |
| Bladder Carcinoma | 0/58 0% | 21/956 2% |
| Biliary Tract Carcinoma | 0/54 0% | 20/950 2% |
| Oral Cavity Carcinoma | 1/54 2% | 0/0 0% |
| Glioma | 0/52 0% | 37/2127 2% |
| Other Sarcomas | 1/69 1% | 12/699 2% |
| Hepatocellular Carcinoma | 1/46 2% | 37/2210 2% |
| Pancreatic Carcinoma | 4/89 4% | 24/1611 1% |
| Neuroendocrine Tumour | 8/154 5% | 4/577 1% |
| Head and Neck Carcinoma | 7/85 8% | 20/1574 1% |
| Non-Cancerous | 1/104 1% | 14/830 2% |
| Osteosarcoma | 0/45 0% | 3/166 2% |
Mutation Distribution
Where AFF2 is mutated · all tissues, split by cell line vs tissue
How many mutations in AFF2 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 4,676 mutations in AFF2
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 |
|---|