TMEM255A

Transmembrane protein 255A Q5JRV8 T255A_HUMAN
Protein Coding Chr X Xq24 Swiss-Prot reviewed Entrez 55026
Mutations
498
CL 69 · Tissue 425
Samples
166
CL 32 · Tissue 132
Peptides
147
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
Mutations49869425
Samples16632132
Peptides14724125

Function

TMEM255A · Transmembrane protein 255A

Predicted to act upstream of or within response to bacterium. Predicted to be integral component of membrane. [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
ENST00000309720 Q5JRV8 162 124
ENST00000371369 Q5JRV8-3 160 116
ENST00000440464 Q5JRV8-4 90 79
ENST00000371352 Q5JRV8-2 86 61

Gene Properties

Type
Protein Coding
Chromosome
X
Cytoband
Xq24
Entrez ID
Aliases
FAM70A

Recurrent Mutations

All 124 amino-acid changes on canonical ENST00000309720 · 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 TMEM255A · 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 TMEM255A – 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
Chronic Myelogenous Leukemia
1/25 4%
0/0 0%
Unknown
0/10 0%
1/29 3%
T-Lymphoblastic Leukemia
1/40 2%
0/0 0%
Endometrial Carcinoma
1/42 2%
13/612 2%
Cervical Carcinoma
3/35 9%
4/422 1%
Melanoma
3/210 1%
24/1899 1%
Squamous Cell Lung Carcinoma
3/57 5%
5/810 1%
Adrenocortical Carcinoma
0/3 0%
1/112 1%
Neuroendocrine Tumour
4/154 3%
1/577 0%
Other Sarcomas
2/69 3%
3/699 0%
Colorectal Carcinoma
2/143 1%
18/3239 1%
Gastric Carcinoma
2/74 3%
8/1809 0%
Small Cell Lung Carcinoma
0/9 0%
4/752 1%
Bladder Carcinoma
2/58 3%
3/956 0%
Osteosarcoma
1/45 2%
0/166 0%
Ovarian Carcinoma
3/109 3%
2/998 0%
Non-Small Cell Lung Carcinoma
0/304 0%
7/1390 0%
Other Solid Cancers
0/94 0%
5/1515 0%
Head and Neck Carcinoma
1/85 1%
3/1574 0%
Breast Carcinoma
1/144 1%
7/3264 0%
Glioma
0/52 0%
5/2127 0%
Hepatocellular Carcinoma
0/46 0%
5/2210 0%
Biliary Tract Carcinoma
0/54 0%
2/950 0%
Kidney Carcinoma
0/85 0%
3/1862 0%
Prostate Carcinoma
1/13 8%
2/2105 0%
Esophageal Carcinoma
0/23 0%
1/769 0%
Esophageal Squamous Cell Carcinoma
0/51 0%
3/2550 0%
Thyroid Gland Carcinoma
0/45 0%
2/1592 0%
Non-Cancerous
1/104 1%
0/830 0%
Pancreatic Carcinoma
0/89 0%
1/1611 0%

Mutation Distribution

Where TMEM255A is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in TMEM255A 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 498 mutations in TMEM255A

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