FHIT

Fragile histidine triad diadenosine triphosphatase P49789 FHIT_HUMAN
Protein Coding Chr 3 3p14.2 Swiss-Prot reviewed Entrez 2272
Mutations
334
CL 63 · Tissue 268
Samples
118
CL 29 · Tissue 88
Peptides
80
unique mutant peptides
Transcripts
3
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
Mutations33463268
Samples1182988
Peptides801869

Function

FHIT · Fragile histidine triad diadenosine triphosphatase

The protein encoded by this gene is a P1-P3-bis(5'-adenosyl) triphosphate hydrolase involved in purine metabolism. This gene encompasses the common fragile site FRA3B on chromosome 3, where carcinogen-induced damage can lead to translocations and aberrant transcripts. In fact, aberrant transcripts from this gene have been found in about half of all esophageal, stomach, and colon carcinomas. The encoded protein is also a tumor suppressor, as loss of its activity results in replication stress and DNA damage. [provided by RefSeq, Aug 2017].

Isoforms & Proteins

3 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
ENST00000492590 P49789 120 80
ENST00000468189 P49789 107 78
ENST00000476844 P49789 107 78

Gene Properties

Type
Protein Coding
Chromosome
3
Cytoband
3p14.2
Entrez ID
Aliases
AP3AaseFRA3B

Recurrent Mutations

All 80 amino-acid changes on canonical ENST00000492590 · 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 FHIT · 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 FHIT – 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
Unknown
0/10 0%
1/29 3%
Chondrosarcoma
0/14 0%
1/75 1%
Acute Myeloid Leukemia
1/90 1%
0/0 0%
Melanoma
0/210 0%
20/1899 1%
Endometrial Carcinoma
1/42 2%
5/612 1%
Hodgkins Lymphoma
0/16 0%
1/122 1%
Squamous Cell Lung Carcinoma
1/57 2%
5/810 1%
Neuroendocrine Tumour
5/154 3%
0/577 0%
Colorectal Carcinoma
6/143 4%
15/3239 0%
Bladder Carcinoma
1/58 2%
4/956 0%
Osteosarcoma
1/45 2%
0/166 0%
Non-Small Cell Lung Carcinoma
3/304 1%
5/1390 0%
Mesothelioma
0/62 0%
1/165 1%
Gastric Carcinoma
1/74 1%
6/1809 0%
Plasma Cell Myeloma
0/44 0%
1/305 0%
Ovarian Carcinoma
2/109 2%
1/998 0%
Medulloblastoma
0/0 0%
1/450 0%
Other Solid Cancers
1/94 1%
2/1515 0%
Glioma
0/52 0%
4/2127 0%
Breast Carcinoma
2/144 1%
4/3264 0%
Esophageal Carcinoma
0/23 0%
1/769 0%
Other Sarcomas
0/69 0%
1/699 0%
Small Cell Lung Carcinoma
1/9 11%
0/752 0%
Pancreatic Carcinoma
0/89 0%
2/1611 0%
Head and Neck Carcinoma
0/85 0%
2/1574 0%
B-Lymphoblastic Leukemia
3/55 5%
0/2640 0%
Non-Cancerous
0/104 0%
1/830 0%
Prostate Carcinoma
0/13 0%
2/2105 0%
Neuroblastoma
0/87 0%
1/1331 0%
Thyroid Gland Carcinoma
0/45 0%
1/1592 0%

Mutation Distribution

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

Mutation counts by tissue
Mutation Distribution

How many mutations in FHIT 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 334 mutations in FHIT

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