C2orf81

Chromosome 2 open reading frame 81 A6NN90 CB081_HUMAN
Protein Coding Chr 2 2p13.1 Swiss-Prot reviewed Entrez 388963
Mutations
653
CL 143 · Tissue 503
Samples
276
CL 98 · Tissue 174
Peptides
176
unique mutant peptides
Transcripts
4
isoforms mutated

Stats by Source

Total, split by cell line (COSMIC CL / DepMap / PubMed) vs tissue (COSMIC primary tissue)

How the counts split by source
Stats by Source

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.

TotalCell lineTissue
Mutations653143503
Samples27698174
Peptides17645138

Function

C2orf81 · Chromosome 2 open reading frame 81

Predicted to be involved in regulation of transcription, DNA-templated. Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

Isoforms & Proteins

4 transcripts · UniProt mapping is sequence-verified (AA-safe)

About the isoform mapping
Isoforms & Proteins

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.

TranscriptUniProtMutationsPeptides
ENST00000290390 G3XAA6* 202 139
ENST00000612891 A6NN90 200 137
ENST00000640868 A0A1W2PQG2* 169 119
ENST00000684111 A0A804HJ35* 82 35

Gene Properties

Type
Protein Coding
Chromosome
2
Cytoband
2p13.1
Entrez ID
Aliases
hCG40743

Recurrent Mutations

All 137 amino-acid changes on canonical ENST00000612891 · needle height = samples · drag the mini-map to zoom

What this lollipop shows
Recurrent Mutations

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 C2orf81 · cell line vs tissue

How this frequency is counted
Cancer-type mutation frequency

For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in C2orf81 – 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 typeCell linesTissue samples
T-Lymphoblastic Leukemia
8/40 20%
0/0 0%
T-Cell Non-Hodgkins Lymphoma
2/26 8%
0/0 0%
Acute Myeloid Leukemia
5/90 6%
0/0 0%
Glioblastoma
4/98 4%
0/0 0%
Chronic Myelogenous Leukemia
1/25 4%
0/0 0%
Endometrial Carcinoma
7/42 17%
11/612 2%
Neuroendocrine Tumour
11/154 7%
4/577 1%
Oral Cavity Carcinoma
1/54 2%
0/0 0%
Hodgkins Lymphoma
1/16 6%
1/122 1%
Colorectal Carcinoma
12/143 8%
30/3239 1%
Thyroid Gland Carcinoma
0/45 0%
19/1592 1%
Germ Cell Tumour
2/25 8%
0/169 0%
Cervical Carcinoma
0/35 0%
4/422 1%
Burkitts Lymphoma
2/32 6%
0/196 0%
Plasma Cell Myeloma
2/44 5%
1/305 0%
Gastric Carcinoma
2/74 3%
14/1809 1%
Other Solid Cancers
3/94 3%
10/1515 1%
Gastrointestinal Stromal Tumour
0/0 0%
1/133 1%
Non-Small Cell Lung Carcinoma
7/304 2%
4/1390 0%
Non-Cancerous
4/104 4%
2/830 0%
Melanoma
4/210 2%
9/1899 0%
Hepatocellular Carcinoma
0/46 0%
13/2210 1%
Rhabdomyosarcoma
0/33 0%
1/171 1%
Esophageal Squamous Cell Carcinoma
1/51 2%
11/2550 0%
Prostate Carcinoma
0/13 0%
8/2105 0%
Head and Neck Carcinoma
1/85 1%
5/1574 0%
Kidney Carcinoma
1/85 1%
6/1862 0%
Bladder Carcinoma
3/58 5%
0/956 0%
Glioma
1/52 2%
5/2127 0%
Ovarian Carcinoma
3/109 3%
0/998 0%

Mutation Distribution

Where C2orf81 is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in C2orf81 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

GTEx Portal ↗
About the expression data
GTEx Expression

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 653 mutations in C2orf81

About the mutation list
Mutations

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.

IDSampleTranscriptAA Change CDSTypeSourceMutant PeptideWild-type Peptide