C20orf203

Chromosome 20 open reading frame 203 Q8NBC4 CT203_HUMAN
Protein Coding Chr 20 20q11.21 Swiss-Prot reviewed Entrez 284805
Mutations
68
CL 18 · Tissue 50
Samples
43
CL 18 · Tissue 25
Peptides
35
unique mutant peptides
Transcripts
2
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
Mutations681850
Samples431825
Peptides351718

Function

C20orf203 · Chromosome 20 open reading frame 203

The protein encoded by this gene is thought to be a human-specific protein. Currently available evidence suggests that orthologous regions in other organisms contain sequence differences that would not support production of a protein product. Genome-wide association studies have suggested the possibility that a SNP in the 3' UTR, rs17123507, could be associated with nicotine addiction. Expression of this gene may be elevated in some individuals with Alzheimer's disease. [provided by RefSeq, Mar 2017].

Isoforms & Proteins

2 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
ENST00000608990 Q8NBC4 43 35
ENST00000360785 Q8NBC4 25 18

Gene Properties

Type
Protein Coding
Chromosome
20
Cytoband
20q11.21
Entrez ID

Recurrent Mutations

All 35 amino-acid changes on canonical ENST00000608990 · 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 C20orf203 · 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 C20orf203 – 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
2/40 5%
0/0 0%
Germ Cell Tumour
1/25 4%
0/169 0%
Other Solid Cancers
0/94 0%
6/1515 0%
Non-Small Cell Lung Carcinoma
4/304 1%
2/1390 0%
Melanoma
1/210 0%
6/1899 0%
Endometrial Carcinoma
2/42 5%
0/612 0%
Colorectal Carcinoma
5/143 4%
3/3239 0%
Cervical Carcinoma
0/35 0%
1/422 0%
Small Cell Lung Carcinoma
0/9 0%
1/752 0%
Squamous Cell Lung Carcinoma
1/57 2%
0/810 0%
Pancreatic Carcinoma
0/89 0%
1/1611 0%
Head and Neck Carcinoma
1/85 1%
0/1574 0%
Thyroid Gland Carcinoma
1/45 2%
0/1592 0%
Gastric Carcinoma
0/74 0%
1/1809 0%
Prostate Carcinoma
0/13 0%
1/2105 0%
B-Cell Non-Hodgkins Lymphoma
0/88 0%
1/2534 0%
Other Blood Cancers
0/61 0%
1/2725 0%
Hepatocellular Carcinoma
0/46 0%
1/2210 0%

Mutation Distribution

Where C20orf203 is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in C20orf203 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 68 mutations in C20orf203

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